US4681867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supported fischer-tropsch catalyst and method of making the catalyst
Assignee: Air Products and Chemicals Inc
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Filing: 1986-05-13
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Granted: 1987-07-21
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Expires: 2006-05-13
Abstract
Abstract A Fischer-Tropsch catalyst and a method of making the catalyst for a Fischer-Tropsch process utilizing the catalyst by which synthesis gas, particularly carbon-monoxide rich synthesis gas, is selectively converted to higher hydrocarbons of relatively narrow carbon number range is disclosed. In general, the selective and notably stable catalyst, consist of an inert carrier first treated with a Group IV B metal compound (such as zirconium or titanium), preferably an alkoxide compound, and subsequently treated with an organic compound of a Fischer-Tropsch metal catalyst, such as cobalt, iron or ruthenium carbonyl. Reactions with air and water and calcination are specifically avoided in the catalyst preparation procedure.
Inventors
- 👤 Paul N. Dyer
- 👤 Ronald Pierantozzi
- 👤 Howard P. Withers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:27
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/462; B01J23/70; B01J23/74; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/06; C07C1/063; C07C2521/00; C07C2521/02; C07C2521/04; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/16; C07C2531/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
106 words
Method for making a catalyst comprising the following steps: (a) treating a silica catalyst base material with a nonaqueous solution of a decomposable salt or organic compound of a group IVB metal and removing remaining said nonaqueous solution; (b) impregnating the product of Step (a) with a nonaqueous solution of a decomposable salt or organic compound of a Fischer-Tropsch metal catalyst from the group consisting of cobalt, iron or ruthenium, and removing remaining said nonaqueous solution; and (c) exposing the product of Step (b) to a reducing atmosphere; all while maintaining said material and said products under conditions sufficient to avoid hydrolysis, oxidation, and calcination thereof.
Claim 2
Dependent Claim
106 words
Method for making a catalyst comprising the following steps: (a) treating a silica catalyst base material with a nonaqueous solution of a decomposable salt or organic compound of a group IVB metal and removing remaining said nonaqueous solution; (b) impregnating the product of Step (a) with a nonaqueous solution of a decomposable salt or organic compound of a Fischer-Tropsch metal catalyst from the group consisting of cobalt, iron or ruthenium, and removing remaining said nonaqueous solution; and (c) exposing the product of Step (b) to a reducing atmosphere; all while maintaining said material and said products under conditions sufficient to avoid hydrolysis, oxidation, and calcination thereof.
Claim 3
Dependent Claim
35 words
The method of claim 1, wherein said Group IVB metal compound is zirconium, titanium or hafnium alkoxide, and said Fischer-Tropsch metal catalyst compound is a carbonyl of the group consisting of iron, cobalt or ruthenium.
Claim 4
Dependent Claim
14 words
The method of claim 2, wherein said Group IVB metal compound is zirconium alkoxide.
Claim 5
Dependent Claim
12 words
The method of claim 2, wherein said Fischer-Tropsch metal catalyst is iron.
Claim 6
Dependent Claim
12 words
The method of claim 2, wherein said Fischer-Tropsch metal catalyst is cobalt.
Claim 7
Dependent Claim
12 words
The method of claim 2, wherein said Fischer-Tropsch metal catalyst is ruthenium.
Claim 8
Dependent Claim
9 words
A catalyst produced by the method of claim 1.
Claim 9
Dependent Claim
9 words
A catalyst produced by the method of claim 2.
Claim 10
Dependent Claim
9 words
A catalyst produced by the method of claim 3.
Claim 11
Dependent Claim
9 words
A catalyst produced by the method of claim 4.
Claim 12
Dependent Claim
9 words
A catalyst produced by the method of claim 5.
Claim 13
Dependent Claim
9 words
A catalyst produced by the method of claim 6.
References Cited (Backward Citations)
US4499209A
Cited
US4542122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |