Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1994-07-01
1996-01-30
Cross, E. Rollins
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502202, 502207, 502300, 502328, 502329, 502330, 502332, 502333, 502340, 502341, 502342, 502343, 502344, 502347, 502348, B01J 2300, B01J 2358
Patent
active
054880246
ABSTRACT:
A catalyst composition comprising palladium, silver and a support material (preferably alumina) is contacted at a relatively low temperature (of up to about 60.degree. C.) with a liquid composition comprising an effective reducing agent (preferably an alkali metal borohydride, hydrazine, formaldehyde, formic acid, ascorbic acid, dextrose, aluminum powder). Preferably, at least one alkali metal compound (more preferably KOH, RbOH, CsOH, KF) is also present in the liquid composition. An improved process for selectively hydrogenating acetylene (to ethylene) employs this wet-reduced catalyst composition.
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Yeung H. Park and Geoffrey L. Price, "Promotional Effects of Potassium on Pd/Al.sub.2 O.sub.3 Selective Hydrogenation Catalysts", Ind. Eng. Chem. Res. 1992, vol. 31, pp. 469-474.
Brown Scott H.
Cheung Tin-Tack P.
Johnson Marvin M.
Kimble James B.
Zisman Stan A.
Brandes K. K.
Cross E. Rollins
Irzinski E. D.
Phillips Petroleum Company
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