US4207208A
Expired / Lapsed
US
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Method for regeneration and activity improvement of syngas conversion catalyst
Assignee: Mobil Oil AS
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Filing: 1978-12-18
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Granted: 1980-06-10
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Expires: 1998-12-18
Abstract
Abstract A method is disclosed for the treatment of single particle iron-containing syngas (synthes.s gas) conversion catalysts comprising iron, a crystalline acidic aluminosilicate zeolite having a silica to alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1-12 and a matrix. The catalyst does not contain promoters and the treatment is applicable to either the regeneration of said spent single particle iron-containing catalyst or for the initial activation of fresh catalyst. The treatment involves air oxidation, hydrogen reduction, followed by a second air oxidation and contact of the iron-containing single particle catalyst with syngas prior to its use for the catalytic conversion of said syngas. The single particle iron-containing catalysts are prepared from a water insoluble organic iron compound.
Inventors
- 👤 Stanley J. Lucki
- 👤 James A. Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/90; B01J29/04; B01J29/06; B01J29/40; B01J29/42; B01J29/46; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; C07C1/045; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/12; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/064; C07C2529/072; C07C2529/40; C07C2529/42; C07C2529/46; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S502/00; Y10S502/514
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
198 words
A method for treating either a fresh or spent single particle iron-containing syngas conversion catalyst composition prepared by forming a mixture of a water insoluble iron derivative of an organic compound, a matrix and an acidic crystalline aluminosilicate zeolite having a silica-to-alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1 to 12 which comprises: (a) oxidizing said catalyst in a stream of flowing air at a pressure in the range of 0-200 psig for about 0.1 to 16 hours at a temperature within the range of about 500°-1,000° F., (b) treating the product from step (a) in a stream of flowing hydrogen at a pressure in the range of 0-200 psig for about 0.1 to 16 hours at a temperature within the range of about 500°-1,000° F., (c) treating the product from step (b) in air at a pressure in the range of 0-200 psig for about 0.1-16 hours at a temperature within the range of about 500°-1,000° F., and (d) treating the product from step (c) with synthesis gas at atmospheric pressure at temperatures of about 550°-650° F. for about 0.5 to 24 hours.
Claim 2
Independent Claim
198 words
A method for treating either a fresh or spent single particle iron-containing syngas conversion catalyst composition prepared by forming a mixture of a water insoluble iron derivative of an organic compound, a matrix and an acidic crystalline aluminosilicate zeolite having a silica-to-alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1 to 12 which comprises: (a) oxidizing said catalyst in a stream of flowing air at a pressure in the range of 0-200 psig for about 0.1 to 16 hours at a temperature within the range of about 500°-1,000° F., (b) treating the product from step (a) in a stream of flowing hydrogen at a pressure in the range of 0-200 psig for about 0.1 to 16 hours at a temperature within the range of about 500°-1,000° F., (c) treating the product from step (b) in air at a pressure in the range of 0-200 psig for about 0.1-16 hours at a temperature within the range of about 500°-1,000° F., and (d) treating the product from step (c) with synthesis gas at atmospheric pressure at temperatures of about 550°-650° F. for about 0.5 to 24 hours.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the catalyst has been spray-dried to produce fluid size particles.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said water insoluble compound is ferrous oxalate.
Claim 5
Dependent Claim
13 words
The process of claim 2 wherein said water insoluble compound is ferrous oxalate.
Claim 6
Dependent Claim
15 words
The process of claim 4 wherein said water insoluble iron oxalate is formed in situ.
Claim 7
Dependent Claim
12 words
The process of claim 1 wherein said matrix is a siliceous matrix.
Claim 8
Dependent Claim
10 words
The process of claim 1 wherein said matrix comprises alumina.
Claim 9
Dependent Claim
10 words
The process of claim 1 wherein said matrix comprises silica-alumina.
Claim 10
Dependent Claim
14 words
The process of claim 6 wherein colloidal dispersions of silica and alumina are used.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein the zeolite is ZSM-5.
Claim 12
Dependent Claim
10 words
The process of claim 2 wherein the zeolite is ZSM-5.
Claim 13
Dependent Claim
10 words
The process of claim 3 wherein the zeolite is ZSM-5.
Claim 14
Dependent Claim
10 words
The process of claim 4 wherein the zeolite is ZSM-5.
Claim 15
Dependent Claim
10 words
The process of claim 5 wherein the zeolite is ZSM-5.
Claim 16
Dependent Claim
23 words
The process of claim 13 wherein the catalyst has become partially inactivated as a result of syngas conversion and its activity is restored.
Claim 17
Dependent Claim
10 words
The process of claim 15 wherein step (a) is omitted.
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) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |