Dehydrogenation using sulfur tolerant zeolite catalyst
AssigneeChevron U.S.A. Inc.
InventorsStephen J. Miller, Paul G. Johnson
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Abstract
A process is provided for catalyst dehydrogenation of light paraffinic hydrocarbons using a catalyst comprising a noble metal and an intermediate pore size zeolite having a specified alkali content. The catalyst is sulfur tolerant, so that the dehydrogenation process can be carried out in the presence of sulfur or with periodic exposure to sulfur.
Claims40
A process for dehydrogenating a light paraffinic hydrocarbon feed which comprises contacting the feed under catalytic dehydrogenation conditions with a catalyst comprising:
- (a) a noble metal;
- (b) an intermediate pore size zeolite having a silica to alumina mole ratio of about 30 or greater;
- and
- (c) an alkali content wherein the alkali to aluminum ratio in the zeolite is between about 1 and about 5 on a molar basis.
A process for dehydrogenating a hydrocarbon feed which comprises contacting the feed under catalytic dehydrogenation conditions with a catalyst comprising:
- (a) a noble metal;
- (b) an intermediate pore size zeolite having a silica to alumina mole ratio of about 200 or greater;
- and
- (c) an alkali content wherein the alkali to aluminum ratio in the zeolite is between about 1 and about 5 on a molar basis.
Dependencies are inferred from the claim text.