Patent US3673114A successfully refreshed from Google Patents.
US3673114A
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Disproportionation catalysts
Assignee: BP PLC
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Filing: 1970-01-28
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Granted: 1972-06-27
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Expires: 1990-01-28
Abstract
Abstract A catalyst for the disproportionation of olefins is prepared by (i) adsorbing aluminum ions into silica (ii) adsorbing sodium ions and (iii) adsorbing ions of one or more of the metals rhenium, tungsten and molybdenum. The catalyst is activated by heating to 350* to 650* C. for up to 16 hours.
Inventors
- 👤 Keith George Allum
- 👤 Peter John Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:43
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/32; B01J23/36; C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; C07C2521/00; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/28; C07C2523/30; C07C2523/32; C07C2523/36; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A process as claimed in claim 1 for the preparation of a catalyst precursor composition in which process and in lieu of the step of contacting the silica (prior to contacting with the solution contain-ing molybdenum, tungsten or rhenium ions) with an aqueous solution containing aluminum ions at a temperature of from 10* to 90* C. under conditions such that the aluminum ions are adsorbed onto the surface of the silica by ion exchange, the step of contacting the silica with an aluminum compound capable of hydrolysis by water, and then contacting the silica with water to effect hydrolysis.
Claim 2
Dependent Claim
102 words
A process as claimed in claim 2 for the preparation of a catalyst precursor composition containing from 0.01 to 5 percent by wt of sodium per 100 parts by wt of silica which process comprises contacting the silica, after adsorbing the aluminum ions but before adsorbing the tungsten, molybdenum, or rhenium ions, with (i) an aqueous solution containing sodium ions at a temperature of 10* to 90* C under conditions such that the sodium ions are adsorbed onto the surface of the silica by ion exchange and (ii) washing the silica with water to remove substantially all the chemically uncombined sodium ions.
References Cited (Backward Citations)
US3573228A
Cited
US3471586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |