Design and Synthesis of Nitrogen-Doped Porous Carbon Materials for CO 2 Capture and Investigation of CO 2 Sorption Kinetics
|
|
- Rolf Wilkinson
- 5 years ago
- Views:
Transcription
1 Design and Synthesis of Nitrogen-Doped Porous Carbon Materials for CO 2 Capture and Investigation of CO 2 Sorption Kinetics Investigators Jennifer Wilcox, Assistant Professor, Energy Resources Engineering; T. Daniel P. Stack, Associate Professor, Chemistry; Zhenan Bao, Associate Professor, Chemical Engineering; Jiajun He, Graduate Researcher, Energy Resources Engineering; Reza Haghpanah, Post- Doctoral Researcher, Energy Resources Engineering; John To, Graduate Researcher, Chemical Engineering; J. Brannon Gary, Post-Doctoral Researcher, Chemistry; Chris Lyons, Graduate Researcher, Chemistry, Stanford University. Abstract Solid-state post-combustion CO 2 sorbents have certain advantages over traditional aqueous amine systems, including reduced regeneration energy since vaporization of liquid water is avoided, tunable pore morphology, and greater chemical variability. This report includes two parts, i.e., the design and synthesis of nitrogen-doped porous carbons as CO 2 sorbents and the development of a robust technique for the measurement of CO 2 sorption kinetics. Mesoporous carbons are promising for CO 2 capture due to their chemical inertness, low cost, high surface area, and tunable pore structures. The porous structure and high surface area allow addition of chemical functionality by grafting or impregnation. Nitrogen functionalization plays an important role in surface chemistry to achieve high CO 2 adsorption capacity. We report here an ordered mesoporous nitrogen-doped carbon made using the co-assembly of modified-pyrrole and triblock copolymer through a softtemplating method, which is facile, economical, and fast compared to the hard-template approach. In the synthesis, the pyrrole precursor acts as both the carbon and nitrogen source. Carbonization of the resultant polymeric assembly generates a graphitic carbon structure and porous network through the removal of the block copolymer template. A high surface area mesoporous carbon was achieved that is comparable to silica counterparts. The resulting material shows promising CO 2 capture performance, reaching equilibrium adsorption of 1.0 mmol CO 2 g -1 of material at 25 C and a pco 2 of 0.1 bar. Furthermore, the hierarchical macro-meso-microporous structure of this N-doped carbon allows for fast diffusion of CO 2 gas into the adsorption sites and controlled condensation within the microporous structure. Another potential benefit is that the thermal conductivity of the mesoporous carbon is higher than its silica counterpart, resulting in faster regeneration with enhanced stability using a temperature swing adsorption process. In addition, we also report a class of hierarchically microporous graphitic carbons with 3D interconnected pore architecture. Our strategy is based on an intrinsic 3D hierarchical nanostructured polymer hydrogel without any sacrificing templates. This sorbent showed promising CO 2 capacity compared to commercially available activated carbon and possesses potential for application in dynamic column adsorption processes. Furthermore, the precursor that is used in the manufacturing process is cost effective.
2 Mesoporous silicas have been used as CO 2 sorbent supports because of their well defined pore structures, high surface areas, and established synthetic and covalent modification procedures. By covalent integration of amines into the silica pore network, we aim to probe the relationship between structural properties of the active sorbents, adsorption and desorption conditions, and dynamics of CO 2 adsorption/desorption cycling using thermogravimetric analysis (TGA). A robust technique for measuring the kinetics of CO 2 adsorption and desorption under a variety of conditions has been developed and calibrated using a commercially available sorbent. Application to novel materials is currently underway. Introduction The spontaneous reaction of primary amines with CO 2 to rapidly form carbamateammonium ion pairs in solution makes aqueous amine scrubbing the preferred CO 2 capture strategy at scale (Scheme 1). Wide-spread implementation of this technology at large point sources, such as coal-fired power plants, is precluded by the high energy demands of sorbent regeneration, chiefly due to vaporization of the water solvent. Translating amine-based sorbents to solid supports is a popular strategy for mitigating this cost, and extensive research has been geared toward synthesizing materials to maximize CO 2 uptake capacity. The importance of CO 2 adsorption and desorption kinetics has been considered far less. Scheme 1. Carbamate-ammonium ion pair formation Background Nitrogen-Doped Porous Carbon Materials Ordered N-doped mesoporous carbons have attracted considerable attention in the application of CO 2 capture owing to their high surface area, tunable pore structure, narrow pore size distribution, and mechanical, thermal, and electric properties. N-doped mesoporous carbons are often prepared by a nanocasting method using a sacrificial template, typically porous silica. Nitrogen functionality can be incorporated by impregnation with nitrogen-containing organic molecules, followed by carbonization and removal of the silica template, or through post-synthesis treatment of mesoporous carbon using acetonitrile or ammonia chemical vapor deposition. These multi-step processes are costly and time consuming. Other methods include the co-assembly of a nitrogencontaining monomer, melamine resin, urea-phenol-formaldehyde resin, or dicyandiamide with a structural directing agent; however, the resulting porous polymers usually exhibit poor thermal stability. The decomposition process is further promoted by the high oxygen content within the triblock polymer. Development of a reliable and facile strategy to synthesize N-doped mesoporous carbon without the use of a hard template is highly desirable. Carbonization of polypyrrole has proven to yield highly graphitic and thermally conductive materials, which is desirable for heat transfer during adsorption and/or thermal regeneration. In this work, we report the successful synthesis of nitrogendoped porous carbon using a modified-pyrrole monomer as both the carbon and nitrogen
3 source, which showed high CO 2 capacity, high CO 2 /N 2 selectivity, and facile regeneration. CO 2 Sorption Kinetics Comparison of amine-functionalized sorbent performance is difficult, as there is no adherence to a standard set of CO 2 adsorption or desorption conditions in the literature, and those reported often do not faithfully mimic flue gas conditions (i.e., pco bar; ph 2 O bar; po bar; pn bar; o C). An equilibrium CO 2 capacity of 3.3 mmol g -1 under humid conditions (pco bar; ph 2 O 0.02 bar; 25 o C) was reported by Sayari et al. using a pore-expanded MCM-41 silica synthesized with grafted primary amines at 4.3 mmol g -1 loading.[1] While this equilibrium CO 2 capacity is impressive for a relatively low pco 2, adsorption and desorption rates were not provided. The formation of bicarbonate is invoked during CO 2 capture; however, this is not a viable reaction at scale as the uncatalyzed reaction is far too slow for adsorption/desorption cycles on the time scale of minutes.[2] The modified SBA-15 mesoporous silica by Jones et al. with covalently attached highly branched amines, created by in situ aziridine polymerization (nitrogen loading of 9.8 mmol g -1 ),[2] exhibits the highest reported equilibrium capacity of 5.6 mmol g -1 after a 3-hr exposure (pco bar; ph 2 O 0.02 bar; 25 o C), which decreases to 2.8 mmol g -1 with a 0.1 hr exposure. Desorption kinetics were not measured; however, in a previous report a similar material required a 3-hr desorption cycle at 130 C under N 2 flow.[3] Both thermal- and pressure-swing desorption processes are possible sorbent regeneration strategies. Thermal-swing desorption is generally performed under active flow of an inert purge gas such as N 2 or Ar, resulting in counterproductive dilution of the captured CO 2, which may be avoided using a pressure-swing approach. Steam-assisted desorption is also possible, but with subsequent costs of condensation or pressurization to remove liquid water. Using thermogravimetric analysis (TGA), we have developed a method for measuring the CO 2 adsorption and desorption capacities and rates of amine-functionalized silica materials under a variety of conditions. Correlating sorbent kinetic performance to the electronic and geometric structure of amines under realistic conditions will provide insights for further sorbent refinement to achieve cycle times on the time scale of minutes. Results Nitrogen-Doped Porous Carbon We have synthesized a variety of carbon-based materials using polymer templates with pyrrole precursors possessing moderately high surface areas (800 m 2 g -1 ) and interesting hierarchical porous structures (Figure 2). Structural characterization using XRD, SAXS, SEM, and TEM was performed. Elemental analysis and XPS showed considerable nitrogen functionality incorporated into the carbon materials. CO 2 sorption capacities of 1.0 mmol g -1 and 3.1 mmol g -1 were measured at 25 o C and a pco 2 of 0.1 and 1.0 bar, respectively (Figure 3).
4 Figure 2: Left) Scanning electron microscopy (SEM) and Right) transmission electron microscopy (TEM) images showing the sponge like macroscopic structure of SNC-1 and the ordered mesopores feature. Figure 3: CO2 isotherms of the SNC-1 material at 273, 298 and 323 K and N2 isotherm at 298 K. CO2 Sorption Kinetics TGA is ideally suited for monitoring adsorption/desorption kinetics, as mass change is monitored with high accuracy in time. To calibrate our TGA methods, we have investigated a commercially-available mesoporous silica sorbent, functionalized with a monolayer coverage of ethylenediamine units (ED, loading of 1.6 mmol g-1, Scheme 2). Scheme 2. Sili-ED CO2 adsorption. Bare silica specs: surface area = 480 m2 g-1, pore diameter = 6 nm, pore volume = 0.7 ml g-1.
5 Figure 4 shows the CO 2 adsorption of Sili-ED at 40 o C and a pco 2 of 0.15 bar (N 2 balance). A final equilibrium CO 2 capacity, q, of 0.83 mmol g -1 is obtained, with ca. 90 % of the final capacity achieved after 8 minutes. A CO 2 :amine ratio of 1:1 is expected for intramolecular carbamate-ammonium ion pair formation with ED (i.e. CO 2 capacity of 1.6 mmol g -1 ). The relatively low CO 2 uptake could be the result of a densely packed monolayer and inaccessible ED on the surface (Scheme 2). Figure 4. TGA profile for Sili-ED CO 2 adsorption (40 o C, pco bar, pn bar, 20 ml min -1 ) Figure 5 Left shows the CO 2 adsorption/desorption profile for Sili-ED over 4 cycles. Adsorption at 40 o C with pco bar is limited to 12 minutes, and ca. 95 % of the equilibrium CO 2 capacity is obtained. Full regeneration is achieved by heating from o C at 5 o C min -1 under N 2 flow and holding isothermal for 12 minutes. Figure 5 Right shows the time derivative of the TGA trace and provides a clearer assessment of rates of CO 2 adsorption/desorption. Adsorption features are sharp and reflect fast CO 2 uptake, as expected for primary amines. Desorption features are significantly broader and desorption is complete only after 20 minutes, highlighting a limiting characteristic of the material. Furthermore, desorption under N 2 is not practical at scale as the resultant gas stream has a low CO 2 concentration.
6 Figure 5. Left) TGA profile for Sili-ED CO 2 adsorption/desorption cycles. Adsorption: 40 o C, pco bar, pn bar, 20 ml min -1. Desorption: 40 o 80 o C, 5 o C min -1, pco bar, pn bar, 20 ml min -1. Right) Time derivative of CO 2 adsorption/desorption trace. Progress Promising nitrogen-doped mesoporous carbons with unique hierarchical macro-, meso-, and microporous architectures were synthesized using a soft template approach and characterized using various analytical methods. Nitrogen functionalities within the carbon matrix enhance the CO 2 sorption capacity and selectivity relative to other activated carbons. In addition, a robust and reproducible method for monitoring CO 2 adsorption/desorption kinetics has been developed using TGA. The commercially available sorbent Sili-ED displays rapid CO 2 uptake kinetics and a good CO 2 capacity after 12 minutes. Kinetics for complete CO 2 desorption are significantly slower at ca. 20 minutes. The method can be applied to a variety of solid sorbents to simultaneously measure CO 2 capacity and sorption kinetics. Future Plans Efforts to increase the nitrogen content and control nitrogen speciation in the mesoporous carbon materials to enhance CO 2 capacity and selectivity are currently underway. Additional nitrogen functional groups can also be incorporated into the framework through the addition of nitrogen-containing additives or post-synthesis impregnation or grafting. In addition, physical or chemical impregnation of carbonic anhydrase into the mesoporous carbon substrate is under investigation. This material may provide a means to catalytically convert CO 2 into bicarbonate in a robust and efficient manner. Furthermore, the CO 2 capture performance of several commercial solid sorbents as well as synthetic materials under realistic coal-fired post-combustion flue gas conditions is under investigation. The impacts of related trace acidic species (SO x and NO x ) on the CO 2 capture performance will be studied.
7 Investigation of novel silica and carbon materials using TGA is ongoing. Development of efficient desorption methods using vacuum and/or steam is also planned. Patents 1. Wilcox, J., D.T. Stack, Z. Bao, J. He, J. Tao, G. Brannon, Biomimetic Sorbents for CO 2 Capture, Provisional Patent S12-500, Bao, Z., J. Wilcox, J. To, J. He, Nitrogen-Doped Micro and Mesoporous Carbon Sorbents for CO 2 Capture, Provisional Patent S13-374, References 1. Serna-Guerrero, R., E. Da'na, and A. Sayari, New Insights into the Interactions of CO 2 with Amine-Functionalized Silica. Industrial & Engineering Chemistry Research, (23): p Drese, J.H., et al., Synthesis-Structure-Property Relationships for Hyperbranched Aminosilica CO 2 Adsorbents. Advanced Functional Materials, (23): p Hicks, J.C., et al., Designing adsorbents for CO 2 capture from flue gashyperbranched aminosilicas capable,of capturing CO 2 reversibly. Journal of the American Chemical Society, (10): p Contacts Jennifer Wilcox: wilcoxj@stanford.edu T. Daniel P. Stack: stack@stanford.edu Zhenan Bao: zbao@stanford.edu Jiajun He: jiajunhe@stanford.edu Reza Haghpanah: rezahagh@stanford.edu John To: johnto@stanford.edu J. Brannon Gary: jbgary@stanford.edu Chris Lyons: ctlyons@stanford.edu
Biomimetic Sorbents for Selective CO2 Capture Investigators Abstract Introduction
Biomimetic Sorbents for Selective CO2 Capture Investigators Jennifer Wilcox, Assistant Professor, Energy Resources Engineering; T. Daniel P. Stack, Associate Professor, Chemistry; Zhenan Bao, Associate
More informationPorous Carbon with Ultrahigh Surface Area for CO 2 Capture at Elevated Pressure and Developing Methods for Measuring CO 2 Adsorption Dynamics
Porous Carbon with Ultrahigh Surface Area for CO 2 Capture at Elevated Pressure and Developing Methods for Measuring CO 2 Adsorption Dynamics Investigators Jennifer Wilcox, Assistant Professor, Energy
More informationDesign and testing of sorbents for CO2 separation of post-combustion and natural gas sweetening applications
Engineering Conferences International ECI Digital Archives CO2 Summit II: Technologies and Opportunities Proceedings Spring 4-13-2016 Design and testing of sorbents for CO2 separation of post-combustion
More informationAdsorption Processes. Ali Ahmadpour Chemical Eng. Dept. Ferdowsi University of Mashhad
Adsorption Processes Ali Ahmadpour Chemical Eng. Dept. Ferdowsi University of Mashhad Contents Introduction Principles of adsorption Types of adsorption Definitions Brief history Adsorption isotherms Mechanism
More informationm WILEY- ADSORBENTS: FUNDAMENTALS AND APPLICATIONS Ralph T. Yang Dwight F. Benton Professor of Chemical Engineering University of Michigan
ADSORBENTS: FUNDAMENTALS AND APPLICATIONS Ralph T. Yang Dwight F. Benton Professor of Chemical Engineering University of Michigan m WILEY- INTERSCIENCE A JOHN WILEY & SONS, INC., PUBLICATION Preface xi
More informationALTERNATIVE ROUTES IN THE SYNTHESIS OF AMINO FUNCTIONAL SORBENTS USING COMPRESSED CO 2
ALTERNATIVE ROUTES IN THE SYNTHESIS OF AMINO FUNCTIONAL SORBENTS USING COMPRESSED CO 2 Pedro López-Aranguren*,1,2, Lourdes F. Vega 1,3, Concepción Domingo Pascual 2 1 MATGAS Research Center (Carburos Metálicos/Air
More informationEXECUTIVE SUMMARY. especially in last 50 years. Industries, especially power industry, are the large anthropogenic
EXECUTIVE SUMMARY Introduction The concentration of CO 2 in atmosphere has increased considerably in last 100 years, especially in last 50 years. Industries, especially power industry, are the large anthropogenic
More informationReport on Preparation of Nanotemplates for mab Crystallization
Deliverable number D2.1 Due date 30/09/2017 Deliverable title Report on Preparation of Nanotemplates for mab Crystallization Issue date 21/09/2017 WP number WP2 Author(s) J. Heng, W. Chen, H. Yang Lead
More informationAmine-impregnated silica monolith with a hierarchical pore structure: enhancement of CO 2 capture capacity
1 Electronic Supplementary Information (ESI) Amine-impregnated silica monolith with a hierarchical pore structure: enhancement of CO 2 capture capacity for Chao Chen, Seung-Tae Yang, Wha-Seung Ahn* and
More informationAdsorption of Methylene Blue on Mesoporous SBA 15 in Ethanol water Solution with Different Proportions
2015 2 nd International Conference on Material Engineering and Application (ICMEA 2015) ISBN: 978-1-60595-323-6 Adsorption of Methylene Blue on Mesoporous SBA 15 in Ethanol water Solution with Different
More informationDynamic cyclic performance of phenol-formaldehyde resinderived carbons for pre-combustion CO 2 capture: An experimental study
Available online at www.sciencedirect.com Energy Procedia 37 (213 ) 127 133 GHGT-11 Dynamic cyclic performance of phenol-formaldehyde resinderived carbons for pre-combustion CO 2 capture: An experimental
More informationAdsorption (Ch 12) - mass transfer to an interface
Adsorption (Ch 12) - mass transfer to an interface (Absorption - mass transfer to another phase) Gas or liquid adsorption (molecular) onto solid surface Porous solids provide high surface area per weight
More informationThis is a repository copy of Optimised PEI impregnation of activated carbons - Enhancement of CO2 capture under post-combustion conditions.
This is a repository copy of Optimised PEI impregnation of activated carbons - Enhancement of CO2 capture under post-combustion conditions. White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/89498/
More informationJulien Schmitt, postdoc in the Physical Chemistry department. Internship 2010: Study of the SAXS scattering pattern of mesoporous materials
Before starting Julien Schmitt, postdoc in the Physical Chemistry department Internship 2010: Study of the SAXS scattering pattern of mesoporous materials PhD 2011-2014: Self-assembly mechanism of mesoporous
More informationSynthesis and Characterization of high-performance ceramic materials for hightemperature
Synthesis and Characterization of high-performance ceramic materials for hightemperature CO 2 capture and hydrogen production. Location: Institute for Energy Technology (IFE), Kjeller, Norway Department
More informationTechnologies and Approaches of CO 2 Capture
Southwest Regional Partnership Project Technologies and Approaches of CO 2 Capture Liangxiong Li, Brian McPherson, Robert Lee Petroleum Recovery Research Center New Mexico Institute of Mining and Technology,
More informationFigure 1. Pore size distribution
Product Information '2:(;Ã237,325(Ã/ÃDQGÃ9 Polymeric Adsorbents Dow has developed a new polymeric adsorbent type for the concentration of organics from air and water. Key features of these adsorbents are:
More informationMicrostructured Porous Silica Obtained via Colloidal Crystal Templates
Paper No. 203e Microstructured Porous Silica Obtained via Colloidal Crystal Templates O. D. Velev, T. A. Jede, R. F. Lobo and A. M. Lenhoff Department of Chemical Engineering, University of Delaware, Newark
More informationAdvancing Adsorption and Membrane-Separation Processes for the Gigaton Carbon Capture Challenge
I CH05CH22-Wilcox ARI 24 March 2014 17:58 R E V I E W S E Review in Advance first posted online on April 3, 2014. (Changes may still occur before final publication online and in print.) N C A D V A N Annu.
More informationSYNTHESIS AND CHARACTERIZATION OF NITROGEN-CONTAINING MICROPOROUS CARBON WITH A THREE-DIMENSIONAL NANO-ARRAY STRUCTURE
SYNTHESIS AND CHARACTERIZATION OF NITROGEN-CONTAINING MICROPOROUS CARBON WITH A THREE-DIMENSIONAL NANO-ARRAY STRUCTURE Peng-Xiang Hou 1, Takashi Kyotani 1, Koich Matsuoka 1, Akira Tomita 1, Norihiko Setoyama
More informationSEPARATION BY BARRIER
SEPARATION BY BARRIER SEPARATION BY BARRIER Phase 1 Feed Barrier Phase 2 Separation by barrier uses a barrier which restricts and/or enhances the movement of certain chemical species with respect to other
More informationSynthesis of a Zeolite Column with a Monolithic Microhoneycomb Structure Using the Ice Template Method
Synthesis of a Zeolite Column with a Monolithic Microhoneycomb Structure Using the Ice Template Method Shin R. Mukai, Shinya Murata, Kazufusa Onodera and Izumi Yamada *1 Graduate School of Engineering,
More informationA General Synthesis of Discrete Mesoporous Carbon Microspheres through a Confined Self- Assembly Process in Inverse Opals
A General Synthesis of Discrete Mesoporous Carbon Microspheres through a Confined Self- Assembly Process in Inverse Opals Zhenkun Sun,, Yong Liu, Bin Li, Jing Wei, Minghong Wang, Qin Yue, Yonghui Deng,
More informationTemplate-Free Synthesis of Highly Porous Boron. Nitride: Insights into Pore Network Design and Impact
Template-Free Synthesis of Highly Porous Boron Nitride: Insights into Pore Network Design and Impact on Gas Sorption Sofia Marchesini a, Catriona M. McGilvery b, Josh Bailey c and Camille Petit a, * a
More informationResponse surface methodology as an efficient tool for optimizing carbon. M.V. Gil, M. Martínez, S. García, F. Rubiera, J.J. Pis, C.
Response surface methodology as an efficient tool for optimizing carbon adsorbents for CO 2 capture M.V. Gil, M. Martínez, S. García, F. Rubiera, J.J. Pis, C. Pevida * Instituto Nacional del Carbón, INCAR-CSIC,
More informationPreliminary evaluation and bench-scale testing of natural and synthetic CaO-based sorbents for post combustion CO 2 capture via carbonate looping
th High Temperature Solid Looping Cycles Network Meeting Politecnico di Milano, Milan, Italy st - nd September 5 Preliminary evaluation and bench-scale testing of natural and synthetic CaO-based sorbents
More informationCO 2 ADSORPTION BY SURFACE MODIFIED CARBON SORBENTS
CO 2 ADSORPTION BY SURFACE MODIFIED CARBON SORBENTS Mercedes Maroto-Valer*, Zhong Tang and Yinzhi Zhang The Energy Institute and The Department of Energy and Geo-Environmental Engineering, The Pennsylvania
More informationRole of iron in preparation and oxygen reduction reaction activity of nitrogen-doped carbon
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2014 Electronic Supplementary Information Role of iron in preparation and oxygen reduction reaction
More informationSUPPLEMENTARY INFORMATION
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2014 SUPPLEMENTARY INFORMATION From Melamine-Resorcinol-Formaldehyde to Nitrogen-Doped
More informationPorous systems for high performance CO 2 capture: The MATESA selective CO 2 capture materials
Porous systems for high performance CO 2 capture: The MATESA selective CO 2 capture materials Alessio Masala Ph.D. student Prof. Silvia Bordiga Supervisor MATESA Dissemination Day, Jun. 16 th, 2016, OSLO,
More informationA New Redox Strategy for Low-Temperature Formation of Strong Basicity on Mesoporous Silica
Electronic Supplementary Material (ESI) for Chemical Communications. This journal is The Royal Society of Chemistry 2015 Electronic Supplementary Information A New Redox Strategy for Low-Temperature Formation
More informationOptimal molecular design of poly (ionic liquids) for CO2 capture from the atmosphere
Engineering Conferences International ECI Digital Archives CO2 Summit II: Technologies and Opportunities Proceedings Spring 4-13-2016 Optimal molecular design of poly (ionic liquids) for CO2 capture from
More informationLecture 7. Sorption-Separation Equipment
Lecture 7. Sorption-Separation Equipment Adsorption - Stirred-tank, slurry operation - Cyclic fixed-bed batch operation - Thermal (temperature)-swing adsorption - Fluidizing bed for adsorption and moving
More informationPREPARATION OF MCM-48 MESOPOROUS MOLECULAR SIEVE INFLUENCE OF PREPARATION CONDITIONS ON THE STRUCTURAL PROPERTIES
Digest Journal of Nanomaterials and Biostructures Vol. 11, No. 1, January - March 2016, p. 271-276 PREPARATION OF MCM-48 MESOPOROUS MOLECULAR SIEVE INFLUENCE OF PREPARATION CONDITIONS ON THE STRUCTURAL
More informationSTUDY ON THE IMPROVEMENT OF THE REDUCTION CAPACITY OF ACTIVATED CARBON FIBER
STUDY ON THE IMPROVEMENT OF THE REDUCTION CAPACITY OF ACTIVATED CARBON FIBER Chen Shuixia, Zeng Hanmin Materials Science Institute, Zhongshan University, Guangzhou 51275, China Key Laboratory for Polymeric
More informationSupporting Information
Supporting Information 1. Microcapsules characterization 1.1. Thermogravimetric analysis (TGA) Thermal degradation in air and nitrogen of the synthesized microcapsules is shown in figure S1. 100 Weight
More informationA NEW SOLVENT FOR CO2 CAPTURE R.
A NEW SOLVENT FOR CO 2 CAPTURE R. Viscardi, G. Vanga and V. Barbarossa vincenzo.barbarossa@enea.it C.R. Casaccia ENEA; via Anguillarese, 301; 00123 S. M. Galeria-Roma Abstract This experimental study describes
More informationAdsorption Isotherm Measurements of Gas Shales for Subsurface Temperature and Pressure Conditions
Adsorption Isotherm Measurements of Gas Shales for Subsurface Temperature and Pressure Conditions Beibei Wang, Reza Haghapanah, Jennifer Wilcox Department of Energy Resources Engineering, Stanford University
More informationIN SITU 13 C NMR TO DEVELOP MATERIALS FOR THE CAPTURE AND SEQUESTRATION OF CO 2
IN SITU 13 C NMR TO DEVELOP MATERIALS FOR THE CAPTURE AND SEQUESTRATION OF CO 2 Sophia Hayes, Mark Conradi, Phil Skemer Washington University in St. Louis Carbon Sequestration Sequestration conditions:
More informationMetal-Organic Frameworks and Porous Polymer Networks for Carbon Capture
Carbon Capture Workshop, Tuesday, April 3 rd, Texas A&M, Qatar Metal-Organic Frameworks and Porous Polymer Networks for Carbon Capture J. P. Sculley, J.-R. Li, J. Park, W. Lu, and H.-C. Zhou Texas A&M
More informationSupporting information
Supporting information Thermo-responsive coatings on hollow particles with mesoporous shells serve as stimuliresponsive gates to species encapsulation and release. Yang Su 1, Olakunle Francis Ojo 1, Igor
More informationDESIGNED SYNTHESIS OF NANOPOROUS ORGANIC POLYMERS FOR SELECTIVE GAS UPTAKE AND CATALYTIC APPLICATIONS
Virginia Commonwealth University VCU Scholars Compass Theses and Dissertations Graduate School 2015 DESIGNED SYNTHESIS OF NANOPOROUS ORGANIC POLYMERS FOR SELECTIVE GAS UPTAKE AND CATALYTIC APPLICATIONS
More informationDouble Mesoporous Silica Shelled Spherical/Ellipsoidal Nanostructures: Synthesis and Hydrophilic/Hydrophobic Anticancer Drug Delivery
Supporting information for Supplementary Material (ESI) for Journal of Materials Chemistry Double Mesoporous Silica Shelled Spherical/Ellipsoidal Nanostructures: Synthesis and Hydrophilic/Hydrophobic Anticancer
More informationKinetic, Thermodynamic and Regeneration Studies for CO 2 Adsorption onto Activated Carbon
International Journal of Advanced Mechanical Engineering. ISSN 50-334 Volume 4, Number 1 (014), pp. 7-3 Research India Publications http://www.ripublication.com/ijame.htm Kinetic, Thermodynamic and Regeneration
More informationDesign and Fabrication of Hierarchically Porous Carbon with a Template-free Method
Supplementary information Design and Fabrication of Hierarchically Porous Carbon with a Template-free Method Yutong Gong, Zhongzhe Wei, Jing Wang, Pengfei Zhang, Haoran Li and Yong Wang * Carbon Nano Materials
More informationState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing , China
Electronic Supplementary Material A Co-N/C hollow-sphere electrocatalyst derived from a metanilic CoAl layered double hydroxide for the oxygen reduction reaction, and its active sites in various ph media
More informationSupporting Information
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2017 Supporting Information Cyclic Molecule Aerogels: A Robust Cyclodextrin
More informationComplex Compounds Background of Complex Compound Technology
Complex Compounds For more than 20 years, Rocky Research has been a pioneer in the field of sorption refrigeration utilizing complex compounds. Our technology earned special recognition from NASA in 1999.
More informationAutomated multi-vapor gravimetric sorption analyzer for advanced research applications
Automated multi-vapor gravimetric sorption analyzer for advanced research applications Automated multi-vapor gravimetric sorption analyzer for advanced research applications Key benefits of the DVS Advantage
More informationElectronic Supplementary Information
Electronic Supplementary Material (ESI) for Energy & Environmental Science. This journal is The Royal Society of Chemistry 2016 Electronic Supplementary Information Self-supported formation of hierarchical
More informationLuke Chimuka. School of Chemistry, University of Witwatersrand
Preparation, characterization and application of NaHCO 3 leached bulk U(VI) imprinted polymers endowed with γ-mps coated magnetite in contaminated water Luke Chimuka School of Chemistry, University of
More informationPREPARATION OF ACTIVATED CARBON FROM PULP AND PAPER MILL WASTES TO BE TESTED FOR THE ADSORPTION OF VOCS
PREPARATION OF ACTIVATED CARBON FROM PULP AND PAPER MILL WASTES TO BE TESTED FOR THE ADSORPTION OF VOCS A. GREGÓRIO *, A. GARCIA-GARCIA #, D. BOAVIDA *, I. GULYURTLU * AND I. CABRITA * * Department of
More informationSupplementary figure 1 Molecular electrostatic potential surface of CF 3 X. Reprinted with permission from Supplementary Reference #4.
Supplementary figure 1 Molecular electrostatic potential surface of CF 3 X. Reprinted with permission from Supplementary Reference #4. Copyright 2007 Springer. S1 Supplementary figure 2 Stability tests
More informationFabrication of SiO 2, Al 2 O 3, and TiO 2 Microcapsules with Hollow Core and Mesoporous Shell Structure
Fabrication of SiO 2, Al 2 O 3, and TiO 2 Microcapsules with Hollow Core and Mesoporous Shell Structure Xiao-Feng Guo, Yong-Suk Kim, and Geon-Joong Kim Department of Chemical Engineering, Inha UniVersity,
More informationPressure Swing Adsorption: A Gas Separation & Purification Process
Pressure Swing Adsorption: A Gas Separation & Purification Process Pressure swing adsorption is an adsorption-based process that has been used for various gas separation and purification purposes. Separation
More informationExperimental Section Chemicals. Tetraethyl orthosilicate (TEOS), ammonia aqueous solution (NH 4 OH, 28 wt.%), and dopamine hydrochloride (DA) were
Electronic Supplementary Material (ESI) for Chemical Communications. This journal is The Royal Society of Chemistry 2015 Experimental Section Chemicals. Tetraethyl orthosilicate (TEOS), ammonia aqueous
More informationSupporting Information (Journal of Materials Chemistry A) for. via a scalable limited space chemical vapor deposition technique
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2018 Supporting Information (Journal of Materials Chemistry A) for Development
More informationCharacterization of zeolites by advanced SEM/STEM techniques
SCIENTIFIC INSTRUMENT NEWS 2016 Vol. 7 SEPTEMBER Technical magazine of Electron Microscope and Analytical Instruments. Article Characterization of zeolites by advanced SEM/STEM techniques Toshiyuki Yokoi
More informationHydrogen adsorption by graphite intercalation compounds
62 Chapter 4 Hydrogen adsorption by graphite intercalation compounds 4.1 Introduction Understanding the thermodynamics of H 2 adsorption in chemically modified carbons remains an important area of fundamental
More informationS BET vs. S DFT. Supporting Information
Supporting Information Naturally Nitrogen and Calcium-doped Nanoporous Carbon Derived from Pine Cone with Superior CO 2 Capture Capacities Bingjun Zhu, Congxiao Shang and Zhengxiao Guo S BET vs. S DFT
More informationInfluence of Nonionic Surfactant Concentration on Physical Characteristics of Resorcinol-Formaldehyde Carbon Cryogel Microspheres
Influence of Nonionic Surfactant Concentration on Physical Characteristics of Resorcinol-Formaldehyde Carbon Cryogel Microspheres Seong-Ick Kim, Takuji Yamamoto, Akira Endo, Takao Ohmori, and Masaru Nakaiwa
More informationFacile synthesis of polymer and carbon spheres decorated with highly dispersed metal nanoparticles
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 1 Facile synthesis of polymer and carbon spheres decorated with highly dispersed metal nanoparticles
More informationSynthesis of ordered microporous carbons via template technique
Synthesis of ordered microporous carbons via template technique Zhou Ying, Yao Qimei, Qiu Jieshan *, Guo Hongchen, Sun Zongwei Carbon Research Laboratory, Center for Nano Materials and Science, School
More informationSupporting Information
Supporting Information Controllable Adsorption of CO2 on Smart Adsorbents: An Interplay between Amines and Photoresponsive Molecules Lei Cheng, Yao Jiang, Shi-Chao Qi, Wei Liu, Shu-Feng Shan, Peng Tan,
More informationHierarchical Nanocomposite by Integrating Reduced Graphene Oxide and Amorphous Carbon with Ultrafine MgO Nanocrystallites for Enhanced CO 2 Capture
Supporting Information Hierarchical Nanocomposite by Integrating Reduced Graphene Oxide and Amorphous Carbon with Ultrafine MgO Nanocrystallites for Enhanced CO 2 Capture Ping Li, and Hua Chun Zeng* Department
More informationSacrifical Template-Free Strategy
Supporting Information Core/Shell to Yolk/Shell Nanostructures by a Novel Sacrifical Template-Free Strategy Jie Han, Rong Chen and Rong Guo* School of Chemistry and Chemical Engineering, Yangzhou University,
More informationElectronic Supplementary Material
Electronic Supplementary Material Synthesis and characterization of mesoporous Si MCM-41 materials and their application as solid acid catalysts in some esterification reactions by Tarun F Parangi (pp
More informationElectronic Supplementary Information. Noninvasive Functionalization of Polymers of Intrinsic Microporosity for Enhanced CO 2 Capture
Electronic Supplementary Information Noninvasive Functionalization of Polymers of Intrinsic Microporosity for Enhanced CO 2 Capture Hasmukh A. Patel and Cafer T. Yavuz* Oxide and Organic Nanomaterials
More informationSupplementary Figure 1 XPS, Raman and TGA characterizations on GO and freeze-dried HGF and GF. (a) XPS survey spectra and (b) C1s spectra.
Supplementary Figure 1 XPS, Raman and TGA characterizations on GO and freeze-dried HGF and GF. (a) XPS survey spectra and (b) C1s spectra. (c) Raman spectra. (d) TGA curves. All results confirm efficient
More informationCarbon dioxide removal processes by alkanolamines in aqueous organic solvents Hamborg, Espen Steinseth
University of Groningen Carbon dioxide removal processes by alkanolamines in aqueous organic solvents Hamborg, Espen Steinseth IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's
More informationUPGRADING OF PETROLEUM RESIDUE BY NITROGEN DOPING FOR CO 2 ADSORPTION
UPGRADING OF PETROLEUM RESIDUE BY NITROGEN DOPING FOR CO 2 ADSORPTION Nattha Chalermwat a,b, Thanyalak Chaisuwan a,b, Uthaiporn Suriyapraphadilok*,a,b a The Petroleum and Petrochemical College, Chulalongkorn
More informationDEVELOPMENT OF MICROPOROSITY IN CARBONS FOR CARBON DIOXIDE ADSORPTION. A dissertation submitted. to Kent State University in partial
DEVELOPMENT OF MICROPOROSITY IN CARBONS FOR CARBON DIOXIDE ADSORPTION A dissertation submitted to Kent State University in partial fulfillment of the requirements for the degree of Doctor of Philosophy
More informationSynthesis and adsorption property of hypercross-linked sorbent
Journal of Scientific & Industrial Research 52 J SCI IND RES VOL 68 JANUARY 29 Vol. 68, January 29, pp. 52-56 Synthesis and adsorption property of hypercross-linked sorbent Li Dongguang*, Zhang Yanli and
More informationSupporting Information for. Intrinsically Hierarchical Nanoporous Polymers via Polymerization-Induced Microphase. Separation
S1 Supporting Information for Intrinsically Hierarchical Nanoporous Polymers via Polymerization-Induced Microphase Separation Michael B. Larsen, J. David Van Horn, Fei Wu, and Marc A. Hillmyer * Department
More informationSupporting Information High Activity and Selectivity of Ag/SiO 2 Catalyst for Hydrogenation of Dimethyloxalate
Supporting Information High Activity and Selectivity of Ag/SiO 2 Catalyst for Hydrogenation of Dimethyloxalate An-Yuan Yin, Xiao-Yang Guo, Wei-Lin Dai*, Kang-Nian Fan Shanghai Key Laboratory of Molecular
More informationHigh-Pressure Volumetric Analyzer
High-Pressure Volumetric Analyzer High-Pressure Volumetric Analysis HPVA II Benefits Dual free-space measurement for accurate isotherm data Free space can be measured or entered Correction for non-ideality
More informationPolymers 2017; doi: 1. Structural Characterisation of the Prepared Iniferters, BDC and SBDC
S1/S15 Supplementary Materials: Optimisation of surfaceinitiated photoiniferter-mediated polymerisation under confinement, and the formation of block copolymers in mesoporous films Jessica C. Tom 1, Robert
More informationAbstract... Zusammenfassung... List of abbreviations... I. List of figures... II. List of tables... III. Chapter 1: Introduction
Zeinab R. F. Mohamed Synthesis and Characterization of Fire-Retardant Layers onto Polyolefin Substrates 2014 / 178 Seiten / 29,80 / ISBN 978-3-89574-873-8 Verlag Dr. Köster, Berlin / www.verlag-koester.de
More informationSupplementary Information for
Supplementary Information for Facile transformation of low cost thiourea into nitrogen-rich graphitic carbon nitride nanocatalyst with high visible light photocatalytic performance Fan Dong *a, Yanjuan
More informationCO 2 Capture by Mesoporous SBA-15 Grafted with 3- Aminopropyl Triethoxysilane in Supercritical Propane
Available online at www.sciencedirect.com Energy Procedia 37 (2013 ) 175 179 GHGT-11 CO 2 Capture by Mesoporous SBA-15 Grafted with 3- Aminopropyl Triethoxysilane in Supercritical Propane Worasaung Klinthong
More informationADSORPTION AND DESORPTION OF CO ON SOLID SORBENTS
ADSORPTION AND DESORPTION OF CO ON SOLID SORBENTS Ranjani Siriwardane (rsiiw@netl.doe.gov; 34-85-4513) Ming Shen (mshen@netl.doe.gov; 34-85-411) Edward Fisher (efishe@netl.doe.gov; 34-85-411) James Poston
More informationElectronic Supplementary Information
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2017 Electronic Supplementary Information Cation exchange MOF-derived nitrogen-doped
More informationGREEN ENGINEERING PRINCIPLE
GREEN ENGINEERING INNOVATIVE ION EXCHANGE TECHNOLOGY FOR TREATMENT OF AQUEOUS EFFLUENT STREAMS & DEVELOPING GREENER PROCESSES THROUGH RECOVERY & REUSE OF VALUABLE PRODUCTS. C. NANDI NOCIL LTD. GREEN ENGINEERING
More informationADVANCES IN OLEFIN PURIFICATION VIA CATALYSIS AND SORBENT MATERIALS
THE CATALYST GROUP RESOURCES ADVANCES IN OLEFIN PURIFICATION VIA CATALYSIS AND SORBENT MATERIALS A technical investigation commissioned by the members of the Catalytic Advances Program (CAP) Client Private
More informationSingle-Site Active Iron-Based Bifunctional Oxygen Catalyst for a Compressible and Rechargeable Zinc-Air Battery
Single-Site Active Iron-Based Bifunctional Oxygen Catalyst for a Compressible and Rechargeable Zinc-Air Battery Longtao Ma 1, Shengmei Chen 1, Zengxia Pei 1 *, Yan Huang 2, Guojin Liang 1, Funian Mo 1,
More informationReal-Time Detection: From Gisclard et al.: A Simple Device for Air Analysis. AIHA Quarterly, 14(1):23-25 (1953)
Real-Time Detection: 1953 From Gisclard et al.: A Simple Device for Air Analysis. AIHA Quarterly, 14(1):23-25 (1953) Sampling Gases and Vapors Gas: A state of matter characterized by very low density and
More informationSupporting Information for
Supporting Information for Microporous Organic Network Hollow Spheres: Useful Templates for Nanoparticulate Co 3 O 4 Hollow Oxidation Catalysts Narae Kang, Ji Hoon Park, Mingshi Jin, Nojin Park, Sang Moon
More informationdissolved into methanol (20 ml) to form a solution. 2-methylimidazole (263 mg) was dissolved in
Experimental section Synthesis of small-sized ZIF-8 particles (with average diameter of 50 nm): Zn(NO 3 ) 2 (258 mg) was dissolved into methanol (20 ml) to form a solution. 2-methylimidazole (263 mg) was
More informationAdsorption of Carbon Dioxide onto Tetraethylenepentamine Impregnated PMMA Sorbents with Different Pore Structure
Korean Chem. Eng. Res., 53(3), 382-390 (2015) http://dx.doi.org/10.9713/kcer.2015.53.3.382 PISSN 0304-128X, EISSN 2233-9558 Adsorption of Carbon Dioxide onto Tetraethylenepentamine Impregnated PMMA Sorbents
More informationII.1.4 Nanoengineering of Hybrid Carbon Nanotube-Metal Nanocluster Composite Materials for Hydrogen Storage
II.1.4 Nanoengineering of Hybrid Carbon Nanotube-Metal Nanocluster Composite Materials for Hydrogen Storage Investigators Kyeongjae (KJ) Cho, Assistant Professor of Mechanical Engineering; Bruce Clemens,
More informationFacile synthesis of porous nitrogen-doped holey graphene as an efficient metal-free catalyst for the oxygen reduction reaction
Electronic Supplementary Material Facile synthesis of porous nitrogen-doped holey graphene as an efficient metal-free catalyst for the oxygen reduction reaction Li Qin 1,2,5, Ruimin Ding 1,2, Huixiang
More informationSupporting Information
Supporting Information Surfactant-Free Assembly of Mesoporous Carbon Hollow Spheres with Large Tunable Pore Sizes Hongwei Zhang, Owen Noonan, Xiaodan Huang, Yannan Yang, Chun Xu, Liang Zhou, and Chengzhong
More informationKinetic enhancement of adsorbent for CO2 capture from atmosphere by porous material
Engineering Conferences International ECI Digital Archives CO2 Summit II: Technologies and Opportunities Proceedings Spring 4-13-2016 Kinetic enhancement of adsorbent for CO2 capture from atmosphere by
More informationMagnesiothermic synthesis of sulfur-doped graphene as an efficient. metal-free electrocatalyst for oxygen reduction
Supporting Information: Magnesiothermic synthesis of sulfur-doped as an efficient metal-free electrocatalyst for oxygen reduction Jiacheng Wang, 1,2,3, * Ruguang Ma, 1,2,3 Zhenzhen Zhou, 1,2,3 Guanghui
More informationSTRUCTURE AND ELECTRIC DOUBLE LAYER CAPACITANCE OF NITROGEN-ENRICHED MESOPOROUS CARBON
STRUCTURE AND ELECTRIC DOUBLE LAYER CAPACITANCE OF NITROGEN-ENRICHED MESOPOROUS CARBON Masaya Kodama 1, Denisa Hulicova 1, Junya Yamashita 1, Yasushi Soneda 1, Hiroaki Hatori 1, Katsumi Kamegawa 2, and
More informationCreating New Barriers with Graphene
Creating New Barriers with Graphene Authors: Richard Akam, Lynn Chikosha & Tim von Werne Introduction Graphene was first isolated in 2004 by Andre Geim and Konstantin Novoselov at Manchester University.
More informationSupplementary information
Supplementary information Supplementary Information for Exceptional Ammonia Uptake by a Covalent Organic Framework Christian J. Doonan, David J. Tranchemontagne,T. Grant Glover, Joseph R. Hunt, Omar M.
More informationSpecific Surface Area and Porosity Measurements of Aluminosilicate Adsorbents
ORIENTAL JOURNAL OF CHEMISTRY An International Open Free Access, Peer Reviewed Research Journal www.orientjchem.org ISSN: 0970-020 X CODEN: OJCHEG 2016, Vol. 32, No. (5): Pg. 2401-2406 Specific Surface
More informationNovel Ceramic Membrane for High Temperature Carbon Dioxide Separation
Novel Ceramic Membrane for High Temperature Carbon Dioxide Separation Technical Progress Report (Semi-Annual) 09/01/01 02/28/02 Jun-ichi Ida Zhaohui Yang Jerry Y. S. Lin March 2002 DE-FG26-00NT40824 University
More informationCO 2 capture by Adsorption Processes: From Materials to Process Development to Practical Implementation
CO 2 capture by Adsorption Processes: From Materials to Process Development to Practical Implementation Paul A. Webley Dept. of Chemical Engineering Talloires, July 2010 Outline Adsorption for Post-Combustion
More information