Patent US2843838A successfully refreshed from Google Patents.
US4544645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Promoter for the oxidation of SO2 in an FCC process
Assignee: Chevron USA Inc
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Filing: 1983-09-19
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Granted: 1985-10-01
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Expires: 2003-09-19
Abstract
Abstract In a process for cracking a sulfur-containing hydrocarbon an improved oxidation promoter for converting SO 2 to SO 3 comprising an intimate association of palladium and at least one other metal selected from the group comprising platinum, osmium, iridium, rhenium, and rhodium.
Inventors
- 👤 Alan W. Klaassen
- 👤 Richard D. Bezman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:20
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8603; B01D53/8609; B01J23/40; B01J23/44; B01J23/46; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/72; B01J29/74; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
123 words
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.
Claim 2
Dependent Claim
123 words
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.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein the first particulate solid contains from about 0.1 to 100% reactive alumina by weight.
Claim 4
Dependent Claim
68 words
The composition of claim 1 wherein the second particulate solid contains palladium or a compound of palladium and one other metal or a compound of one other metal and the total metal content of said second particulate solid is in the range of from about 0.01 to about 2% by weight and constitutes from about 0.1 to about 100 parts per million by weight of the cracking catalyst.
Claim 5
Dependent Claim
11 words
The composition of claim 3 wherein the other metal is platinum.
Claim 6
Dependent Claim
11 words
The composition of claim 3 wherein the other metal is iridium.
Claim 7
Dependent Claim
11 words
The composition of claim 3 wherein the other metal is rhodium.
Claim 8
Dependent Claim
36 words
The composition of claims 4, 5, or 6 wherein the metals are present in a ratio to one another within the range of from about 10 to 1 and about 1 to 10 by weight percent.
Claim 9
Dependent Claim
87 words
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.
Claim 10
Dependent Claim
87 words
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.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |