US4111985A
Expired / Lapsed
US
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Process for producing unsaturated aldehydes and unsaturated carboxylic acids
Assignee: Mitsubishi Chemical Corp
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Filing: 1976-11-12
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Granted: 1978-09-05
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Expires: 1996-11-12
Abstract
Abstract An olefin having 4 carbon atoms or t-butyl alcohol is catalytically oxidized in the gas phase with molecular oxygen at 200 to 450° C to give the corresponding unsaturated aldehyde, unsaturated carboxylic acid and/or conjugated diene in the presence of a catalyst having the formula: Mo.sub.a Sb.sub.b Bi.sub.c Fe.sub.d Ni.sub.e Co.sub.f Sn.sub.g X.sub.h Y i O j wherein a to j represent the atomic ratio of each component and a is 12, b is 0.2 to 20, c is 0.2 to 12, d is 0.2 to 12, e is 0.2 to 12, f is 0 to 20, g is 0 to 20, h is 0.01 to 4, i is 0.01 to 4 and j is a value determined by the valencies of the elements in the catalyst, and wherein X is at least one metal selected from the group consisting of potassium, rubidium, cesium and thallium, and Y is at least one metal selected from the group consisting of selenium, tellurium, gallium, vanadium, ruthenium, zinc, niobium, magnesium, chromium, manganese, cadmium and tantalum.
Inventors
- 👤 Kazuya Okada
- 👤 Hideo Matsuzawa
- 👤 Hiromichi Ishii
- 👤 Masao Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:24
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8873; B01J23/8872; B01J23/8874; B01J23/8875; B01J23/8876; B01J23/89; B01J23/8933; B01J23/8993; B01J27/00; B01J27/02; B01J27/057; B01J27/0573; B01J27/0576; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; C07C45/37; C07C51/00; C07C51/16; C07C51/21; C07C51/23; C07C51/235; C07C51/25; C07C51/252; B01J2523/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
In a process for catalytically oxidizing at least one compound selected from the group consisting of unsaturated hydrocarbons with four carbon atoms in the gas phase with molecular oxygen at a temperature of 200° to 450° C to the corresponding aldehyde and acid, the improvement comprising: oxidizing said compound over a calcined catalyst consisting essentially of Mo.sub.a Sb.sub.b Bi.sub.c Fe.sub.d Ni.sub.e Co.sub.f Sn.sub.g X.sub.h Y.sub.i O.sub.j wherein X is at least one metal selected from the group consisting of potassium, rubidium, cesium and thallium, and Y is at least one metal selected from the group consisting of selenium, tellurium, gallium, vanadium and ruthenium; wherein the subscripts a to j are the atomic ratios of each component and a is 12, b = 0.2 to 20, c = 0.2 to 12, d = 0.2 to 12, e = 0.2 to 12, f = 0 to 20, g = 0 to 20, h = 0.01 to 4, i = 0.01 to 4 and j is a value determined by the valencies of the elements in the catalyst.
Claim 2
Dependent Claim
175 words
In a process for catalytically oxidizing at least one compound selected from the group consisting of unsaturated hydrocarbons with four carbon atoms in the gas phase with molecular oxygen at a temperature of 200° to 450° C to the corresponding aldehyde and acid, the improvement comprising: oxidizing said compound over a calcined catalyst consisting essentially of Mo.sub.a Sb.sub.b Bi.sub.c Fe.sub.d Ni.sub.e Co.sub.f Sn.sub.g X.sub.h Y.sub.i O.sub.j wherein X is at least one metal selected from the group consisting of potassium, rubidium, cesium and thallium, and Y is at least one metal selected from the group consisting of selenium, tellurium, gallium, vanadium and ruthenium; wherein the subscripts a to j are the atomic ratios of each component and a is 12, b = 0.2 to 20, c = 0.2 to 12, d = 0.2 to 12, e = 0.2 to 12, f = 0 to 20, g = 0 to 20, h = 0.01 to 4, i = 0.01 to 4 and j is a value determined by the valencies of the elements in the catalyst.
Claim 3
Dependent Claim
26 words
The process according to claim 1, wherein the metal X is at least one alkali metal selected from the group consisting of potassium, rubidium and cesium.
Claim 4
Dependent Claim
25 words
The process according to claim 1, wherein isobutylene is catalytically oxidized in the gas phase to produce predominantly methacrolein and lesser amounts of methacrylic acid.
Claim 5
Dependent Claim
173 words
In a process for catalytically oxidizing at least one compound selected from the group consisting of unsaturated hydrocarbons with four carbon atoms in the gas phase with molecular oxygen at a temperature of 200° to 450° C to the corresponding aldehyde and acid, the improvement comprising: oxidizing said compound over a calcined catalyst consisting essentially of Mo.sub.a Sb.sub.b Bi.sub.c Fe.sub.d Ni.sub.e Co.sub.f Sn.sub.g X.sub.h Y.sub.i O.sub.j wherein X is at least one metal selected from the group consisting of potassium, rubidium, cesium and thallium, and Y is at least one metal selected from the group consisting of selenium, zinc, niobium, vanadium and ruthenium; wherein the subscripts a to j are the atomic ratios of each component and a is 12, b = 0.2 to 20, c = 0.2 to 12; d = 0.2 to 12, e = 0.2 to 12, f = 0.2 to 12, g = 0, h = 0.01 to 4, i = 0.01 to 4 and j is a value determined by the valencies of the elements in the catalyst.
Claim 6
Dependent Claim
173 words
In a process for catalytically oxidizing at least one compound selected from the group consisting of unsaturated hydrocarbons with four carbon atoms in the gas phase with molecular oxygen at a temperature of 200° to 450° C to the corresponding aldehyde and acid, the improvement comprising: oxidizing said compound over a calcined catalyst consisting essentially of Mo.sub.a Sb.sub.b Bi.sub.c Fe.sub.d Ni.sub.e Co.sub.f Sn.sub.g X.sub.h Y.sub.i O.sub.j wherein X is at least one metal selected from the group consisting of potassium, rubidium, cesium and thallium, and Y is at least one metal selected from the group consisting of selenium, zinc, niobium, vanadium and ruthenium; wherein the subscripts a to j are the atomic ratios of each component and a is 12, b = 0.2 to 20, c = 0.2 to 12; d = 0.2 to 12, e = 0.2 to 12, f = 0.2 to 12, g = 0, h = 0.01 to 4, i = 0.01 to 4 and j is a value determined by the valencies of the elements in the catalyst.
Claim 7
Dependent Claim
25 words
The process of claim 4, wherein the metal X is at least one alkali metal selected from the group consisting of potassium, rubidium and cesium.
Claim 8
Dependent Claim
24 words
The process of claim 4, wherein isobutylene is catalytically oxidized in the gas phase to produce predominantly methacrolein and lesser amounts of methacrylic acid.
References Cited (Backward Citations)
US3642930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |