flflflflflflflflflii AD-Ass7 364 TEXAS UNIV AT AUSTIN DEPT OF CHEMISTRY F/6 7/4 " POTOCATALYTIC PRODUCTION OF HYDROGEN FROM WATER AND TEXAS LIBN-ETC(U) JUM 80 S SATO, J M WHITE NOOOl,-75-C-0922 END K-0DI
11111" LIM, 132 11.8 1 1 CHR 136 11111111A * 11111.25 III~*' MICROCOPY RESOLUTION TEST CHAR'
~OFFICE OF NAVAL RESEARCH Contract No. N00014-75-C-0922 ~Task No. NRl 056-578 00 Technical Report No. 16 0Photocatalytic Production of Hydrogen from Water and Texas Lignite using a Platinized Titania Catalyst ry by Shtnri Sato and John M. White Prepared for Publication " in I&.C Product Research and Development Department of Chemistry ~~~~University of Texas at Austin L/- DTIC Austin, Texas 78712 v ELECTE TecncJuly 15, 1980 6 CP a Reproduction in whole or in part is permitted for any purpose of the United States Government Approved for Public Release; Distribution Unlimited Repodctin n wol oi part is-m permi Otd for ~ ~ ~ ~ ~ ~ any ~ pupsafte&ntdsaesgvrmn ~ Ja 8 Aprovd fo Pulic elese;distibuion nliite Asi Txs 7871 S, EL ECTEo
r DISCLAIMER NOTICE THIS DOCUMENT IS BEST QUALITY PRACTICABLE. THE COPY FURNISHED TO DTIC CONTAINED A SIGNIFICANT NUMBER OF PAGES WHICH DO NOT REPRODUCE LEGIBLY. /
SECURITY CLASSIFICATION OF THIS PAGE (1laen Date Enuered) REPORT DOCUMENTATION PAGE READ INSTRUCTIONS 1..1EPORT RODRI. OOVT ACCESSION Np. PIN CATALOG NUMBER Photocatalytic Production of Hydrogen from water and Texas Lignite sing a- Plattnized Titania Catalyste Technical AUTQ". ONTRAC* GRANT NUNSE C Shinri/Sto a John MI hte 1N 14-75-C- 922. PERPORMING ORGANIZATION NAME A1NO ADDRESS t 0RORAM ELEMENT PiOJECT TASK ACEA & WORK UNIT NUMsERS J.M. White, Department of Chemistry i University of Texas at Austin Project NR 056-578 Austin, Texas 78712 I.CONTROLLING OFFICE NAME AND ADDRESS Department of the Navy Ju 8 Office of Naval Research Arlington, Virginia 22217 16 14. MON ORINO AGENCY NAME A ADORESSOIfI fieftnt hem CoemItming O alf) IS. SECURITY CLASS. (of this repert).. I a. D I[ A S IC A T IO N IDO W NG R A D IN G * DI[ULl I I. OIS1RISlUTIOM STATE[MENT 'al th1a aaret)o Approved for Public Reiea'se: Distribution Unlimited 17. DISTRIBUTION STATEMENT (el he absevoc entoaed. oo", It lefmnt bora t) m i IS. SUPPLEMENTARY NOTES &[, I1. KEV WORDS (Canthmw. on,v.a. It,.. ae. - Preprint, accepted, American Chemical Society.,d Identify IV Mock ambet) F WN. ASS? ACT (ca,,,- evere a p ME N* Ap N*ea ueme) rtsing a physical mixture of powdered Texas lignite and platinized titania in the presence of water vapor and ultraviolet -light, we show that a catalytic reaction occurs at 23 0 C to form hydrogen and carbon dioxide. These results are' contrasted with a recent electrochemical conversion process. 'de DO FOR 1473 mnouo.,,ov.,,omoj.p Ot ICUMTV C IO i TOIS PAN :.........L..........,.....1......... ib I....... I I.... :" ; I III...]
n '42 - - c a. a a ILqa.4b n -- a.44 IL1. 0o 4. a"pa a. : no a, 4 0 @a ion~ a U - Avi and/or N eq 0 50 nn 0 tw' ~ N Nr -4qf. 0 0 a. e 4ab q -0 ae 4 eq eq 04 00 0., e 0.6 c 6 V &0U.. w~ a 9 0N A wn a - eq IL ~a tq P. m5 0 or.. 10 *ra' P. V Pes~~o w 0'4 0.4 40N * I- a 6a a N p.4 a a. " U P. 0 a.4 or 4 0 w BOON N 4 I!6* 0- r 40. C :q eq 6q *. 0 eq0 4 00 0 f 14U eq9 a 0
'46 *4 8 0 ~ a.w.. 0 MP a. a. - ~ 6 S aw.0 0-6 n ~~~~I P. UP a 9 a x a a a.... ~ ~ z ~ a ~ a ~ a 0. 0 IU 9 a a. a. a 09 9 9* 11 ona a 09 U a.. a. 9 4 a o * a a a a a 0 V0. a. 9 a 4 a l a 9. a. 0 a a a s.. 10 *4 a ' so. P. a. be. a a. u..9 a.. 0.a a q a u a a p a a C. c a a a. II 0 0 96 ILa 0 0 9 6-0 0' 09 P%?A' a aa 0 a a 0 0 a.- I L0 V.9a a 04 : w a."a a a a -a a9 0 13L 4. S. V a a a a.9 9 16 a a a 9 a a a. u8 9 4 a I 00.9 a. a. a o a. a. * a 9 a.to 006.4 9 a V U 0 4a a. n 09 0q a - 9 a. a U 9 V a. a V a a E9
*~~~~~~~~~ 9 ' 9 0. 4 9 u a4- w9.9 : a 0 ~ 0 9 ' *~~~~ 49.9* 9 0 9-. 9. 9 * 0 0 0 a 09 9 @ 9 C E U~~~~ 9 ~~~~~ 9 *4 49. 9 4. '9 I9 9 I 0 ' 0 9 C. I 0a. 3 '9 4 0 0. ' 0 9 9 49 9 r a 4. 4 9 '. '. ' 9 4 9 ' 9 @ I*. 4 9 0 U 0 9. 1906 '9 0 9 9 ' *~~ 0 '.6 C 0 9 02 0 0 @ M9-9 U' 00. 4 U 4 9 U @9 U*09 ' * 9 a 0 0 V a 0V 4 '9w V a 6 0 4 9 v * a 4 9 V9* 9 0 9 9 ' Ne UP 0 9 ' 9 @ 9 04. 4 4. ' 9'. '. a 69 a AW &'9 4. ' 9 n9 9 ~ 0 4 b.. 09 @9W ' 9 4 9 4 :9. 9 ' 9 4. 4 49 0 49 4 U 0 0 ' a 4 '9 49 " 0 0. 49 U V U a9 4 46 & 90 v 0 0 0 0 9. ' 0 c 4 49 n9 V '9 '4 6' C a 0 pt '9a a 0 9 4 9 4 9 4 '9~ 0 '9 ~~ 4. 0 0 ~ 0 4 9 9 4 4 cc9* 9 4 '9 0 4 9 A 09 4 0 49 V 0 0. 9 ' 0. ' 9 9 9 9 6 0 4 I 9 04 n9 4 * ' 9 4 a9 U 4 9 9 0 49 ' 9 0 0 03. 4 9 4.9 0 ff o '9 V9 ' 0 ~ ~ '9 4 ~ 9 ~ '9= 4 C '9 ~ 4 a 4 9449 9. 0j 49C 4 9 @ 9 @ ' 9 4 (. * 4 9 4 9. 0' '9 @ 40.9 9 4 'U.9 ' @9 49 0 0 0 V..9 9. C o. '4 ~ 0. ~ ' 9 0.. '-4 0 ' 9 0 ' 4 09 U 0 '9 0. '9 '9 P. A. a9 a.9 a9 U 0N. 9 I ' 9.4 U n 4 o 9. 9 4 ' 4' ' 9 C N 0 ' I9 9 9 0 4 ' 0 0 U 0 49 V9 '9.. '9 a9 a9 9 0 U. 9 ' a 9 0. ~ Uo 9 ' 9 4' 0 t-4 9 ' ' 9 ' 9 0 4 ~ ~ ~ ~ ~ ~ I.9 ft ~ 0 0 a.9 4 9 0 ' ' 9 00 9. ft9 09 P% 0 '% 0' ff a9 '4 4 q 1 C '4 U V ' o I9 V~~0 9 U 4 94 9 U 0 ' 9 0 0. in C 0 V '9 '4 9 P. '94 0 a 0 5 9 4 19 09U 4 9 V U '. 0 9 @ a U0 9 '9 c 9 U 0 a I 49... 4 :9 9 4 4 4m 9 4 0 9 C ' 9 0 AV. '9 C" 4 9 0.- V 0 49 U' 4 0 a9 49 9 * 4 0 '9 0be9 I V 0o ~ U A 9. op 49 V9 '93r a 9 0 * 9 ' 9 U 4 Uw 9 0 U @ 9 ~ 0 4 I U 9 '. 9 4 94 49~o 9 00 1 U ' 9 ' ' 9' 9 0 a9 0O n 9 3 V ' 9 49 3 @ 9 0 @ 9 '9 @ 4. 9 U ' N 9 4 9 q 4 U 0 @ 9 0 4 4 ' V 4 9 * V U * V 4 '4r 0 '9 a 4 0 9 0 4 9 4 9 C 0 4. 0 0 4 ' @9 ' ' 49 '9 9.49 '9. 49 9 0 @ 9 U 4 49 0 ff w Ua' ' 0 @9 '9 ' 9 4 4 L0 9 4 99 ~ ' ~ ~ 0.F49 o 9 0. 49 4. 9 ' 0 0 49. -4 9 ' '9 P 4 9 V @ 9 P 9 0 4 4 ' 9 '. ' * '9 S 4 ' 0 49 49 9 4 '9 9 ' 49 0. V 49 V
0 N *4 p a 0 6 or 0 o a a a OW.0U0 11.0 - gon 0 oa la ft IL~' pt 9I 4 a. 0 a~ 0 M, ft p-sr o n a a 0 0 a 0 m 401 0" I 0 0 a 0 0 * * 3 b 0~ I' ft a p a U a 0 n I n~~~ 14'~~ v; 0 4rW 1. 0 a' 0 0 IL 0 K 0r1* 0 00 10 0b 0 W, au4.s 0. 0W A 0 S U ae 6~ qv a a" N,~~ 56 4 0 04 f r. a a a.44!d 0 l a~ w 0 a J 4 gr3 o e 0 0 a0 0 0 " w 0 4
.. w4 FA n9 4 ba U n 4 - (A - 4' 6,U 4 : M a N 9 0 1 1 2 4 4 1 B I 12 a 2 9~~~ ~~ ~~ 0.~ a a. a a. a. a -a- a 46 ILS a 12~~~ S ' 4 4 2 - S ~. a S4 4. 4 a9 44 0.4 U 44 4 SU 0.4 1 B' B 4 5. a 4.4 a- ~.4 a..4 a * 4 a '~ a a w V a. a. -. 4 a a ara- - a 4 a a wno v. I.. a 0 a. a 4 a a a. U a 06 r pt 4 n 3 P.if a a - u a a.4 a a - * S o 0 44 if 4 N U ~ * U a a 4 B. : * a a * ~ ~ ~ 4 ~ a ~ ~ f a. f 4 a f * i.& U 4 * a a0 o 2 5 or 4 : S v -* a. 0 0?' ifa 3 w a ' a a n a a a n a. a. 14 n a n 2 U 4 4 4. a. 4v a4. = IL a a ft a % ~ a 0 44 9: n.4 U.4 aoaa r a C a a -.a a a " a 04.4 a a a a. a 12 a. a. a a * a -o f 4 a. 0" a. if 1 4 @ 12 U a a if 4 1 a8a.4 so a IL 42 if 1w. a - 0' a f a. 4 IV " a a4 44 94 4 3 3 -. 5.4.4 r4 i 0 0-a a 4 1 ~ a. a a - a n a a 4 I'la l a~~~. 4 2 5 1 ~ f V- 1 a * 44 a n 4 b l a r a a r aa. ~ w ~ U B 4 a. * or a- a a m a a PO. -or a. 0 a a a P. a. a a-. ar. a 4 a 4. - -a C,. a. * 4. a. a. 14 A. a If a a a. w a a. a 2 a4 41 I 12 a f.0 f a S a a a a. L" aa- ~ i a a U a 0f 0 - a a a. a I.L U a. a 4 4r a 4 4 4 a a 2. a a. PR if.4 a 1 5 a2 1. if 4 a. a. 0 a a ~ a i f a IL - 4 a a oft a -w au a a.4 a a. a 4 a 46 4 4 41 0 ft s94 f.4 a.0.4 apf a a. 12!6 0. a1 a U a.4 ot a- a- a. i.. 4 0 i. a a 4 a 4.. 49 i t- 2 a 0 w4 a. a a a " bt C a or a ifo *. a. a *a.4 or a 4 2 a. 'I if U U i a *. a 10. 4 044 a% a0 a a 44 a a a. a 0 4 a4 0 m1 a a. ~ a ~~~9 a 1 a a.. 4 a 12 i 41 4 S 44~ 1 N 4 n1 -.40!6 a... f4 a 4 a. 2 2 i. 4 4 a a R ao. a.o a a...4 a INif a 2 a. 2 a 4 04962 4 f f 4 5 4 a-~ ~~~ ~~
r2 a 0 16. f 4 t 0 ' a., so f 0 a. v 0. 0 0 - ornft V U 0 S nouft f am to a C, 0 0, ft f sr. a- ft f4 ft 4t - a f2 4 ft f 0 W at O0t* c It 14 *9 0 - 'A It * t 9f vt or nt ft f f so 0t ftil f t 0 0 t f ft' ft ft r 0 6 a t A t 't f f9l 0t ftfa ' t f at ft ft P. a4 nt f at 0 a 0 t 1 ft ft ft ir t & ft 0 a t oft V t f t t f t v ft 0 t ft ou U U f '4' t f 0 It U b f 0 IL a a * t f t f *6 ft & l 5 0 f 1 bt ft w a 'O 0 ft f 0 14f a t S f ft~ ~ ft: 0 a. f - ft U0 2 ft t '
W w. U. v. :. o m. :..., or U- :c A4 X.14 r" 01 20 w. 7R C C 7 N IA "6 -; C o t-' -~~ a,. 4- ~ '0 V D 2 0 if -. ~~~~~P U a if * 01U0 a, 0a :r * 0. U a 4 *.. 0 5 0 f a a 40 fb r. I - 2. * 4-* a 4-~ ~ *i or0 4 4 1.4 U ( 46 '4 0 0 'P4 in Im a0.0 (2 4f 0 n. - i go 0 U9 a 0~ *~~~ - - a,- ~- ( IA. 0 a-. to a 200 0 20 2 2 0 :r I- I,
0 r ~ 0 0 0 5 02 PRSSURE (10"Torr