Catalyst and process for hydrogenation of unsaturated hydrocarbons
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United States of America Patent
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Jul 10, 1990
Issued Date -
N/A
app pub date -
Aug 5, 1988
filing date -
Apr 13, 1983
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Expired
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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..
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