MOLECULAR SIEVES UOP MOLECULAR SIEVES*

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1 UOP MOLECULAR SIEVES* UOP Molecular Sieves* are synthetically produced, crystalline metal aluminosilicates that have been activated for adsorption by removing their water of hydration. Unlike other adsorbents, Molecular Sieves have a precise uniform size and molecular dimension. According to the size of these pores, molecules may be readily adsorbed, slowly adsorbed or completely excluded. This sieve-like selectivity, based on molecular size, plus a selectable preference for polar or polarizable molecules, gives Molecular Sieves an extremely high level of adsorption efficiency, and permits close tailoring of the adsorbent to the specific use. Pore sizes vary by the type of Molecular Sieve; for example, Type 4A has a uniform pore size of 4 angstroms while Type 13X has a uniform pore size of 10 angstroms. Molecular Sieves are available in a variety of forms which include powder, pellets, mesh and beads: Powders are white finely divided freeflowing particles with an average diameter of 4 5 microns. Pellets are cylindrically formed products whose diameters are controlled (1 16" or 1 8" as specified). Mesh are granular shaped products, and Beads are spherically shaped products. The sizes of both of these products are specified jointly by the screen sizes that the material will pass through and be retained by. For example, a 14 x 30 mesh product will pass through a 14 mesh screen, and be retained by a 30 mesh screen. Listed below are the screen openings for some common screen sizes. Screen Size Opening (mm) Available Molecular Sieve Packages UOP Molecular Sieves are available in a variety of package sizes from 1 2 lb. up to 50 lbs. * Advanced Specialty Gas Equipment repackages and markets Molecular Sieves manufactured by UOP ADVANCED Specialty Gas Equipment

2 TYPE 3A K 2 O K 12 [(AlO 2 ) 12 (SiO 2 ) 12 ] X H 2 O Molecular Sieve Type 3A, the potassium form of the Type A Crystal structure, is an alkali metal alumino-silicate. Available in powder and pellets for commercial dehydration of unsaturated hydrocarbon streams such as cracked gas, propylene, butadiene and acetylene. Type 3A is also used for drying polar liquids such as methanol and ethanol. MOLECULAR SIEVES Established K 2 O TLV-TWA None Currently Established MgO TLV-TWA of 10 mg/m3 FUME Nominal Pore Diameter: 3Å <3Å effective diameter, including H 2 O, NH 3 and methanol >3Å effective diameter, e.g., ethane Cation: Potassium Powder: 23% wt All Other Forms: 20% wt MS lb. Powder MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 16" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 8" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. ADVANCED Specialty Gas Equipment 133

3 TYPE 4A Na 12 [(AlO 2 ) 12 (SiO 2 ) 12 ] X H 2 O Molecular Sieve Type 4A, the sodium form of the Type A crystal structure, is an alkali metal alumino-silicate. Available in powder, pellets, mesh and beads for static dehydration in a closed gas or liquid system. Used in packaging of drugs, electronic components, and perishable chemicals; and as a water scavenger in paint and plastic systems. Type 4A is also used commercially in drying saturated hydrocarbon streams. Established MgO TLV-TWA of 10 mg/m3 Fume Nominal Pore Diameter: 4Å <4Å effective diameter, including ethanol, H 2 S, CO 2, SO 2, C 2 H 4, C 2 H 6, C 3 H 6 >4Å effective diameter, e.g., propane Cation: Sodium Powder: 26% wt 4x8 Beads: 20% wt All Other Forms: 22% wt MS lb. Powder MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 16" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 8" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 14 x 30 MS lb. Case of 6 Mesh MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 8 x 12 MS lb. Case of 6 Beads MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 4 x 8 MS lb. Case of 6 Beads MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 8 x 12 MS lb. Case of 6 Beads MS lb. with MS lb. Case of 4 Indicator** MS lb. ** Molecular Sieves with indicator contain beads that have been chemically impregnated to display a blue color when fully activated by removing the water of hydration. When a gas stream is dried using this product, the color blue will turn to pink as water is adsorbed denoting saturation of the sieve. 134 ADVANCED Specialty Gas Equipment

4 TYPE 5A CaO Ca 4,5 Na 3 [(AlO 2 ) 12 (SiO 2 ) 12 ] X H 2 O Molecular Sieve Type 5A, the calcium form of the Type A crystal structure, is an alkali metal alumino-silicate. Available in powder and pellets for separating normal paraffins from branched-chain and cyclic hydrocarbons through a selective adsorption process. MOLECULAR SIEVES Established CaO TLV-TWA of 2 mg/m3 Nominal Pore Diameter: 5Å <5Å effective diameter, including C 3 H 8, n-c 4 H 10 to C 22 H 46, n-c 4 H 9 OH and larger family members, R-12 and R-22. >5Å effective diameter, e.g., iso compounds and all four carbon rings Cation: Calcium Powder: 26% wt All Other Forms: 21.5% wt MS lb. Powder MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 16" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 8" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. ADVANCED Specialty Gas Equipment 135

5 TYPE AW-300 K 2 O CaO Na Z [(AlO 2 ) X (SiO 2 ) Y ] 24H 2 O Available in pellets for dehydration of trace acid-containing streams and ion exchange. Established K 2 O TLV-TWA None Currently Established CaO TLV-TWA of 2 mg/m3 Nominal Pore Diameter: 4Å >4Å effective diameter Heat of Adsorption (Avg.): 1450 Btu/lb. H 2 O MS lb. 1 16" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 8" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. 136 ADVANCED Specialty Gas Equipment

6 TYPE AW-500 CaO K 2 O Fe 2 O Ca Z [(AlO 2 ) X (SiO 2 ) Y ] 13H 2 O Available in pellets for dehydration of trace acid-containing streams and ion exchange. MOLECULAR SIEVES Established MgO TLV-TWA of 10 mg/m3 Fume CaO TLV-TWA of 2 mg/m3 K 2 O TLV-TWA None Currently Established Fe 2 O 3 TLV-TWA of 5 mg/m3 Fume Nominal Pore Diameter: 5Å > 5Å effective diameter Heat of Adsorption (Avg.): 1450 Btu/lb. H 2 O MS lb. 1 16" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 8" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. ADVANCED Specialty Gas Equipment 137

7 TYPE 13X Na 86 [(AlO 2 ) 86 (SiO 2 ) 106 ] X H 2 O Molecular Sieve Type 13X, the sodium form of the Type X crystal structure, is an alkali metal alumino-silicate. Available in powder, pellets and beads. Used commercially for general gas drying; air plant feed purification (simultaneous removal of H 2 O and CO 2 ); and liquid hydrocarbon and natural gas sweetening (H 2 S and mercaptan removal). Established MgO TLV-TWA of 10 mg/m3 Fume Nominal Pore Diameter: 10Å <10Å effective diameter. > 10Å effective diameter, e.g., Perfluorotributylamine Cation: Sodium Powder: 30% wt All Other Forms: 26% wt MS lb. Powder MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 16" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 1 8" Pellets MS lb. Case of 6 MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 4 x 8 MS lb. Case of 6 Beads MS lb. MS lb. Case of 4 MS lb. MS lb. MS lb. 8 x 12 MS lb. Case of 6 Beads MS lb. MS lb. Case of 4 MS lb. MS lb. 138 ADVANCED Specialty Gas Equipment