Platinum-barium-type L zeolite
AssigneeChevron Research Company
InventorsWaldeen C. Buss, Thomas R. Hughes
Life of this patent
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Abstract
A new catalyst is disclosed which is useful for dehydrocyclizing alkanes. This catalyst contains a type L zeolite, a Group VIII metal, and an alkaline earth metal. Preferably, this catalyst contains a type L zeolite, from 0.1% to 5% by weight platinum and from 1% to 20% by weight barium.
Claims42
A method of reforming hydrocarbons comprising contacting said hydrocarbons with a catalyst comprising:
- (a) a type L zeolite;
- (b) at least one Group VIII metal;
- and
- (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium.
A method of dehydrocyclizing acyclic hydrocarbons comprising contacting said hydrocarbons with a catalyst comprising:
- (a) a type L zeolite;
- (b) at least one Group VIII metal;
- and
- (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium.
A method of reforming alkylcyclopentanes to produce aromatics comprising contacting said alkylcyclopentanes with a catalyst comprising:
- (a) a type L zeolite;
- (b) at least one Group VIII metal;
- and
- (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium.
A method of dehydrocyclizing acyclic hydrocarbons comprising contacting said hydrocarbons with a catalyst at a temperature of from 450.degree. C. to 550.degree. C.;
- a pressure of 50 to 200 psig;
- an LHSV of from 0.3 to 5;
- and an H.sub.2 /HC ratio of from 2:1 to 6:1;
- wherein said catalyst comprises:
- (a) a type L zeolite containing from 0.1% to 1.5% by weight platinum and from 1% to 20% by weight barium;
- wherein at least 80% of the crystals of said type L zeolite are larger than 1000 Angstroms;
- and
- (b) an inorganic binder selected from the group consisting of silica, alumina, and aluminosilicates.
A method of dehydrocyclizing acyclic hydrocarbons comprising contacting said hydrocarbons with a catalyst at a temperature of from 450.degree. C. to 550.degree. C.;
- an LHSV of from 0.3 to 5;
- a pressure of from 50 psig to 200 psig;
- and an H.sub.2 /HC ratio of from 2:1 to 6:1;
- wherein said catalyst consists essentially of a type L zeolite and an organic oxide binder wherein said type L zeolite contains an alkali metal, from 0.1% to 5% by weight platinum and 0.1% to 35% by weight barium.
A method of reforming hydrocarbons comprising contacting said hydrocarbons with a catalyst consisting essentially of:
- (a) a type L zeolite;
- (b) at least one Group VIII metal;
- and
- (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium.
Dependencies are inferred from the claim text.