Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1988-08-05
1990-07-10
Dixon, Jr., William R.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502325, 502332, B01J 2100
Patent
active
049406876
ABSTRACT:
Dienes and/or acetylene impurities in an olefin feed; in particular a propylene feed, may be selectively hydrogenated in a single stage by use of a catalyst of palladium supported on alumina which is substantially crystalline alpha alumina, wherein the average pore radius is 200-2000 .ANG., with at least 80% of the pores having a pore radius within the range of 100 to 3000 .ANG.. The surface acidity of the catalyst is generally from 0.002 to 0.05 millimole of pyridine absorbed per gram of catalyst. The active palladium surface area is from 20 to 200 m.sup.2 /g. The palladium is in the form of crystallines having an average size of at least 25 .ANG..
REFERENCES:
patent: 4230897 (1980-10-01), Cosyns
Chien Jo-Lung
Liu Xin X.
Riegel Herbert
Zhao Bing Y.
Beijing Research Institute of Chemical Industry
Dixon Jr. William R.
Gilfillan III John G.
Hunter James M.
Lillie Raymond J.
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