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US 4,544,645 AGranted
Promoter for the oxidation of SO.sub.2 in an FCC process
AssigneeChevron Research Company
InventorsAlan W. Klaassen, Richard D. Bezman
Life of this patent
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Abstract
In a process for cracking a sulfur-containing hydrocarbon an improved oxidation promoter for converting SO.sub.2 to SO.sub.3 comprising an intimate association of palladium and at least one other metal selected from the group comprising platinum, osmium, iridium, rhenium, and rhodium.
Claims8
A composition of matter useful for cracking a sulphur-containing hydrocarbon in the absence of added hydrogen which comprises:
- (a) a particulate cracking catalyst for cracking hydrocarbons in the absence of hydrogen;
- (b) a first particulate solid other than said particulate cracking catalyst comprising a sulphur sorbent capable of sorbing sulphur trioxide;
- and
- (c) a second particulate solid other than said particulate cracking catalyst comprising an inorganic oxide support associated with a metal mixture containing palladium or a compound of palladium and at least one other metal or a compound thereof selected from the group consisting of platinum, osmium, iridium, and rhenium, with the proviso that when the other metal is platinum, that palladium comprises at least 50% of the associated metals by weight.
1 more element
A composition of matter useful for cracking a sulfur-containing hydrocarbon in the absence of added hydrogen which comprises:
- (a) a particulate cracking catalyst consisting essentially of a silica-containing cracking catalyst impregnated with an aluminum compound capable of sorbing sulfur oxides;
- and
- (b) a second particulate solid other than said particulate cracking catalyst comprising an inorganic oxide support associated with palladium or a compound of palladium and at least one other metal or a compound thereof selected from the group consisting of platinum, osmium, iridium, rhenium, and rhodium.
Dependencies are inferred from the claim text.