Dehydrogenation of isobutane over a zeolitic catalyst
AssigneeChevron Research Company
InventorStephen J. Miller
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Abstract
Isobutene is produced by contacting isobutane with a sulfided, type L zeolitic catalyst containing platinum, tin, barium, and an inorganic binder. The isobutane is contacted with the catalyst in the presence of a sulfur-containing gas at a temperature of from 850.degree. F. to 1250.degree. F., a pressure of less than 20 psig, a liquid hourly space velocity of below 40, and an H.sub.2 /HC of less than 10. Preferably, the catalyst comprises: (1) a sulfided, type L zeolite containing from 8% to 10% by weight barium, from 0.6% to 1.0% by weight platinum, and tin at an atom ratio with the platinum of about 1:1; and (2) an inorganic binder of either silica, alumina, or aluminosilicates.
Claims10
A method of producing isobutene from isobutane comprising contacting said isobutane with a dehydrogenation catalyst in the presence of a sulfur-containing gas at a temperature of from 850.degree. F. to 1250.degree. F., a pressure of less than 20 psig, a liquid hourly space velocity of below 40, and an H.sub.2 /HC of less than 10;
- wherein said dehydrogenation catalyst comprises:
- (a) a sulfided, L zeolite containing from 8% to 10% by weight barium, from 0.6% to 1.0% by weight platinum, and tin at an atom ratio with said platinum of about 1:1;
- and
- (b) an inorganic binder selected from the group consisting of silica, alumina, and aluminosilicates.
A dehydrogenation process comprising contacting a paraffinic feed with a dehydrogenation catalyst at conditions which favor dehydrogenation to produce an olefin product stream;
- wherein said dehydrogenation catalyst comprises a sulfided, L zeolite containing an alkaline earth metal, tin and a Group VIII metal selected from the group consisting of platinum or iridium.
Dependencies are inferred from the claim text.