Patent US4338221A successfully refreshed from Google Patents.
US4338221A
Expired / Lapsed
US
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Catalyst for the reduction of unsaturated organic acids
Assignee: Honeywell UOP LLC
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Filing: 1981-02-11
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Granted: 1982-07-06
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Expires: 2001-02-11
Abstract
Abstract Unsaturated carboxylic acids may be subjected to a reduction process in which the resulting product retains the unsaturation of the starting acids by effecting the reaction in the presence of a catalyst comprising cadmium and rhenium composited on a solid support such as alumina. If so desired, the catalyst composite may also contain a noble metal of Group VIII of the Periodic Table.
Inventors
- 👤 Gail M. Qualeatti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:09
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/17; C07C29/177; B; B01; B01J; B01J23/00; B01J23/16; B01J23/32; B01J23/36; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; B01J23/6567; C07C29/132; C07C29/136; C07C29/147; C07C29/149; C07C67/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A catalyst composite for the reduction of an unsaturated acid to an unsaturated alcohol or ester which comprises from about 1% to about 10% by weight of cadmium in the oxide form, and from about 0.5% to about 5% by weight of rhenium in an oxide form, both being composited upon a high surface area solid support.
Claim 2
Dependent Claim
57 words
A catalyst composite for the reduction of an unsaturated acid to an unsaturated alcohol or ester which comprises from about 1% to about 10% by weight of cadmium in the oxide form, and from about 0.5% to about 5% by weight of rhenium in an oxide form, both being composited upon a high surface area solid support.
Claim 3
Dependent Claim
16 words
The catalyst composite set forth in claim 1 in which said solid support is an alumina.
Claim 4
Dependent Claim
14 words
The catalyst composite set forth in claim 2 in which said alumina is gamma-alumina.
Claim 5
Dependent Claim
15 words
The catalyst composite set forth in claim 1 in which said solid support is silica.
Claim 6
Dependent Claim
15 words
The catalyst composite set forth in claim 1 in which said solid support is silica-alumina.
Claim 7
Dependent Claim
32 words
The catalyst composite of claim 1 further characterized in that said composite contains from about 0.01% to about 2.5% by weight of a Noble Metal of Group VIII of the Periodic Table.
Claim 8
Dependent Claim
15 words
The catalyst composite set forth in claim 6 in which said noble metal is platinum.
Claim 9
Dependent Claim
15 words
The catalyst composite set forth in claim 6 in which said noble metal is palladium.
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) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |