US4082698A
Expired / Lapsed
US
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Catalyst compositions especially useful for preparation of unsaturated acids
Assignee: Standard Oil Co
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Filing: 1976-07-26
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Granted: 1978-04-04
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Expires: 1996-07-26
Abstract
Abstract The present invention relates to a catalyst composition consisting of oxide complexes of vanadium, molybdenum and copper plus an additional metal oxide selected from the group consisting of antimony and germanium or mixtures thereof. These catalysts are especially useful for producing acrylic acid from acrolein and for producing methacrylic acid from methacrolein.
Inventors
- 👤 Wilfrid G. Shaw
- 👤 David B. Terrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:01
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B; B01; B01J; B01J23/00; B01J23/002; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8877; B01J23/16; B01J23/18; B01J23/20; B01J23/22; B01J23/24; B01J23/28; B01J2523/00; B01J37/00; B01J37/02; B01J37/0236
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A catalyst composition having the empirical formula: Mo.sub.a V.sub.b Cu.sub.c X.sub.d O.sub.e wherein X is a metal selected from the group consisting of antimony or the combination of antimony and germanium, and wherein a is a number from 6 to about 18; b, c, and d each are about 0.1 to about 6; and e is the number of oxygens required to satisfy the valence requirements of the other metals present.
Claim 2
Dependent Claim
71 words
A catalyst composition having the empirical formula: Mo.sub.a V.sub.b Cu.sub.c X.sub.d O.sub.e wherein X is a metal selected from the group consisting of antimony or the combination of antimony and germanium, and wherein a is a number from 6 to about 18; b, c, and d each are about 0.1 to about 6; and e is the number of oxygens required to satisfy the valence requirements of the other metals present.
Claim 3
Dependent Claim
9 words
The catalyst in claim 1 wherein X is antimony.
Claim 4
Dependent Claim
11 words
The catalyst in claim 1 wherein X is antimony and germanium.
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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |