Patent US4413155A successfully refreshed from Google Patents.
US4413155A
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Ammoxidation of olefins with novel antimonate catalysts
Assignee: Standard Oil Co
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Filing: 1981-03-30
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Granted: 1983-11-01
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Expires: 2001-03-30
Abstract
Abstract Oxide complex catalysts comprising Fe-Sb-Bi-O x promoted with a wide variety of different elements have been found to be especially useful in the ammoxidation of olefins to nitriles such as acrylonitrile and methacrylonitrile. Not only are the desired nitriles obtained with high yields when these catalysts are used, but also the production of unwanted liquid byproducts such as acrolein, acrylic acid and acetonitrile is significantly reduced.
Inventors
- 👤 Dev D. Suresh
- 👤 Robert K. Grasselli
- 👤 David A. Orndoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:17
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; B01J27/14; B01J27/186; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; B01J2523/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
In an oxydehydrogenation process wherein an olefin having four or more contiguous carbon atoms and oxygen are contacted at elevated temperature in the vapor phase with a catalyst, the improvement wherein said catalyst is free of uranium and tellurium and defined by the following general formula: Fe.sub.1-50 Bi.sub.0.1-20 Sb.sub.1.12-100 A.sub.a B.sub.b C.sub.c O.sub.x wherein A is at least Cu and optionally Ce, V, Cr and/or Mn; B is earth alkali, Co, Ni, Zn, Cd, rare earth metal other than Ce, Ga, In, Tl and/or Th; C is Mo, W, Nb, Ta, Sn, Ge, Ti, Zr, P, B and/or As; and wherein a is 0.01 to 20; b is 0 to 20; c is 0.01 to 20; x is a number determined by the oxygen requirements of the other elements present; and wherein the amount of Sb in said catalysts on an atomic basis is greater than the sum of the amounts of all other elements in said catalyst excluding oxygen.
Claim 2
Dependent Claim
160 words
In an oxydehydrogenation process wherein an olefin having four or more contiguous carbon atoms and oxygen are contacted at elevated temperature in the vapor phase with a catalyst, the improvement wherein said catalyst is free of uranium and tellurium and defined by the following general formula: Fe.sub.1-50 Bi.sub.0.1-20 Sb.sub.1.12-100 A.sub.a B.sub.b C.sub.c O.sub.x wherein A is at least Cu and optionally Ce, V, Cr and/or Mn; B is earth alkali, Co, Ni, Zn, Cd, rare earth metal other than Ce, Ga, In, Tl and/or Th; C is Mo, W, Nb, Ta, Sn, Ge, Ti, Zr, P, B and/or As; and wherein a is 0.01 to 20; b is 0 to 20; c is 0.01 to 20; x is a number determined by the oxygen requirements of the other elements present; and wherein the amount of Sb in said catalysts on an atomic basis is greater than the sum of the amounts of all other elements in said catalyst excluding oxygen.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein C is at least one of Mo, W, Nb and Ta.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said catalyst contains both Mo and W.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said catalyst contains Mo.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein b is greater than 0.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |