US3637484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum group metal on silica-alumina hydrogenation catalyst and process
Assignee: Union Oil Company of California
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Filing: 1970-06-18
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Granted: 1972-01-25
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Expires: 1990-06-18
Abstract
Abstract Unsaturated hydrocarbons, particularly aromatic hydrocarbons, are hydrogenated to corresponding saturated hydrocarbons, using a novel, highly active catalyst comprising platinum and/or palladium deposited selectively by cation exchange upon a silicaalumina cogel or copolymer, which in turn is dispersed in a large pore alumina gel matrix.
Inventors
- 👤 Rowland C Hansford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:33
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/52; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/44; C07; C07C; C07C5/00; C07C5/02; C07C5/10; B01J21/00; B01J21/06; B01J21/08; C07C2521/00; C07C2521/12; C07C2523/00; C07C2523/38; C07C2523/40
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
a minor proportion of a platinum group metal selectively dispersed by cation exchange on said silica-alumina cogel or copolymer from an aqueous solution of a platinum group metal compound wherein the platinum group metal appears in the cation.
Claim 2
Dependent Claim
38 words
a minor proportion of a platinum group metal selectively dispersed by cation exchange on said silica-alumina cogel or copolymer from an aqueous solution of a platinum group metal compound wherein the platinum group metal appears in the cation.
Claim 3
Dependent Claim
30 words
The catalyst composition as defined in claim 1 wherein said platinum group metal compound is selected from the group consisting of platinous tetramminohydroxide, platinic hexamminohydroxide, palladous tetrAmminohydroxide, and palladic hexamminohydroxide.
Claim 4
Dependent Claim
22 words
The catalyst composition as defined in claim 1 wherein the alumina-silica carrier has a bulk density between about 0.2 and 0.6 g./ml.
Claim 5
Dependent Claim
22 words
The catalyst composition as defined in claim 1 wherein said silica-alumina cogel or copolymer comprises about 20-40 weight-percent of the composite carrier.
Claim 6
Dependent Claim
46 words
A process for the hydrogenation of an aromatic hydrocarbon feedstock which comprises contacting said feedstock at a temperature between about 400* and 700* F. and at an elevated pressure in the presence of added hydrogen with an alumina-silica supported platinum group metal catalyst, said catalyst comprising:
Claim 7
Dependent Claim
29 words
The process as defined in claim 5 wherein said platinum group metal compound is selected from the group consisting of platinous tetramminohydroxide, platinic hexamminohydroxide, palladous tetramminohydroxide, and palladic hexamminohydroxide.
Claim 8
Dependent Claim
21 words
The process as defined in claim 5 wherein the alumina-silica carrier has a bulk density between about 0.2 and 0.6 g./ml.
Claim 9
Dependent Claim
22 words
The process as defined in claim 5 wherein said silica-alumina cogel or copolymer comprises about 20-40 weight percent of the composite carrier.
Claim 10
Dependent Claim
18 words
The process as defined in claim 5 wherein the hydrogenation temperature is between about 500* and 650* F.
Claim 11
Dependent Claim
18 words
The process as defined in claim 5 wherein the hydrogenation pressure is between about 150 and 2,000 p.s.i.g.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |