Patent US4795853A successfully refreshed from Google Patents.
US4795853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isoparaffin synthesis over cadmium catalysts
Assignee: BP Corp North America Inc
•
Filing: 1987-08-03
•
Granted: 1989-01-03
•
Expires: 2007-08-03
Abstract
Abstract A process for reacting synthesis gas in the presence of a cadmium-containing catalyst to selectively produce isoparaffin hydrocarbons is disclosed.
Inventors
- 👤 Jeffrey T. Miller
- 👤 Thomas D. Nevitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/08; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/12; C07C2521/16; C07C2523/00; C07C2523/06; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/08; C07C2529/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A process for producing isoparaffins from synthesis gas which comprises contacting the synthesis gas with a catalyst comprising a cadmium component and an acidic support component wherein the iso/normal paraffin ratio of butane in the product is greater than about five, and the iso/normal paraffin ratio of pentane in the product is greater than about eight when the catalyst is tested at reaction pressures above 20 atm, temperatures from 315° to 400° C., synthesis gas rates between 1400 and 2800 cc/h/g catalyst, and hydrogen to carbon monoxide ratios from 2/1 to 1/1.
Claim 2
Dependent Claim
92 words
A process for producing isoparaffins from synthesis gas which comprises contacting the synthesis gas with a catalyst comprising a cadmium component and an acidic support component wherein the iso/normal paraffin ratio of butane in the product is greater than about five, and the iso/normal paraffin ratio of pentane in the product is greater than about eight when the catalyst is tested at reaction pressures above 20 atm, temperatures from 315° to 400° C., synthesis gas rates between 1400 and 2800 cc/h/g catalyst, and hydrogen to carbon monoxide ratios from 2/1 to 1/1.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the catalyst comprises about 5 weight percent cadmium oxide.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein the acidic support material is rare-earth-exchanged Y zeolite and alumina.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein the acidic support material is rare-earth-exchanged X zeolite and alumina.
Claim 6
Dependent Claim
16 words
The process of claim 1 wherein the acidic support material is ultrastable Y zeolite and alumina.
Claim 7
Dependent Claim
14 words
The process of claim 1 wherein the acidic support material is aluminum-expanded bentonite clay.
Claim 8
Dependent Claim
16 words
The process of claim 1 wherein the acidic support material is cadmium-exchanged Y zeolite and alumina.
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein the acidic support material is H mordenite and alumina.
Claim 10
Dependent Claim
13 words
The process of claim 1 wherein the acidic support material is amorphous silica-alumina.
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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |