US4303634A
Expired / Lapsed
US
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Method of catalyst preparation
Assignee: Honeywell UOP LLC
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Filing: 1980-09-19
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Granted: 1981-12-01
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Expires: 2000-09-19
Abstract
Abstract A novel method of preparing an unsupported molybdenum sulfide catalyst utilized in the processing of hydrocarbon feedstocks containing asphaltenes and organometallic compounds.
Inventors
- 👤 John G. Gatsis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:19
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/02; B01J27/04; B01J27/047; B01J27/051; B01J37/00; B01J37/20; C; C01; C01G; C01G39/00; C01G39/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
A method of preparing an unsupported molybdenum sulfide catalyst which comprise reacting molybdenum oxide with ammonium sulfide at a temperature and pressure selected to produce an ammonium salt of molybdenum sulfide and thereafter thermally decomposing said ammonium salt of molybdenum sulfide in a non-oxidative atmosphere to form said unsupported molybdenum sulfide catalyst.
Claim 2
Independent Claim
52 words
A method of preparing an unsupported molybdenum sulfide catalyst which comprise reacting molybdenum oxide with ammonium sulfide at a temperature and pressure selected to produce an ammonium salt of molybdenum sulfide and thereafter thermally decomposing said ammonium salt of molybdenum sulfide in a non-oxidative atmosphere to form said unsupported molybdenum sulfide catalyst.
Claim 3
Dependent Claim
13 words
The method of preparation of claim 1 wherein said non-oxidative atmosphere comprises hydrogen.
Claim 4
Dependent Claim
13 words
The method of preparation of claim 1 wherein said non-oxidative atmosphere comprises nitrogen.
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) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |