US4062811A
Expired / Lapsed
US
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Method for preparing desulfurization catalyst
Assignee: BP PLC
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Filing: 1976-05-26
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Granted: 1977-12-13
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Expires: 1996-05-26
Abstract
Abstract Desulfurization catalyst comprising an iron group metal and a Group VIB metal is modified by refluxing with an aqueous solution of an alkali or alkaline earth metal, or a transition metal. The pore size distribution of the catalyst is improved.
Inventors
- 👤 John David Hargrove
- 👤 Geoffrey Charles Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:15
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A method for preparing a catalyst, suitable for the hydrodesulphurisation of hydrocarbons, comprising from 1-10% weight of an iron group metal and from 5-25% weight of a Group VIB metal on a refractory support, the method comprising the step of refluxing the catalyst with an aqueous solution of a salt selected from the group consisting of alkali metals salts, alkaline earth metal salts, rare earth metal salts and transition metal salts, and drying and calcining the treated catalyst.
Claim 2
Independent Claim
78 words
A method for preparing a catalyst, suitable for the hydrodesulphurisation of hydrocarbons, comprising from 1-10% weight of an iron group metal and from 5-25% weight of a Group VIB metal on a refractory support, the method comprising the step of refluxing the catalyst with an aqueous solution of a salt selected from the group consisting of alkali metals salts, alkaline earth metal salts, rare earth metal salts and transition metal salts, and drying and calcining the treated catalyst.
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) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |