US3959384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation catalyst and process for oxidation of olefins to unsaturated aldehydes
Assignee: Nippon Kayaku Co Ltd
•
Filing: 1974-09-04
•
Granted: 1976-05-25
•
Expires: 1994-09-04
Abstract
Abstract The preparation of an oxidation catalyst is described, represented by the following general formula: Ni.sub.a Co.sub.b Fe.sub.c Bi.sub.d L.sub.e M.sub.h Mo.sub.f O.sub.g ; in which L is phosphorous, arsenic or boron and M is potassium, rubidium or cesium; and wherein a and b have a value of from 0 to 15, a + b being 2 to 15, c is 0.5 to 7, d is 0.1 to 4, e is 0 to 4, f is 12, g is 35 to 85 and h is 0.01 to 0.5. The oxidation catalyst is useful in a process to produce acrolein by oxidizing propylene in vapor phase.
Inventors
- 👤 Shigeo Takenaka
- 👤 Yasuji Kido
- 👤 Tatsutoshi Shimabara
- 👤 Masanobu Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8876; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; B01J27/192
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
202 words
A process for increasing the single pass yield of unsaturated aldehydes in the oxidation of olefins to unsaturated aldehydes comprising reacting, in gaseous phase at a temperature of from 250° to 500°C at a pressure of from 0.5 to 10 atmospheres absolute, an olefin selected from the group consisting of propylene and isobutylene with a gas selected from the group consisting of air, oxygen and mixtures thereof in the presence of an oxidation catalyst of the general formula: Ni a Co b Fe c Bi.sub. d B e M h Mo f O g ; in which Ni, Co, Fe, Bi, B, Mo and O are respectively elements of nickel, cobalt, iron, bismuth, boron, molybdenum and oxygen; M is at least one element selected from the group consisting of potassium, rubidium and cesium; a, b, c, d, e, f, g, and h are respectively numbers of atoms of Ni, Co, Fe, Bi, B, Mo, O and M; and wherein a and b are 0 to 15, a plus b is 2 to 15, c is 0.5 to 7, d is 0.1 to 4, e is 0.5 to 4, f is 12, g is 35 to 85, and h is 0.01 to 0.5.
Claim 2
Dependent Claim
202 words
A process for increasing the single pass yield of unsaturated aldehydes in the oxidation of olefins to unsaturated aldehydes comprising reacting, in gaseous phase at a temperature of from 250° to 500°C at a pressure of from 0.5 to 10 atmospheres absolute, an olefin selected from the group consisting of propylene and isobutylene with a gas selected from the group consisting of air, oxygen and mixtures thereof in the presence of an oxidation catalyst of the general formula: Ni a Co b Fe c Bi.sub. d B e M h Mo f O g ; in which Ni, Co, Fe, Bi, B, Mo and O are respectively elements of nickel, cobalt, iron, bismuth, boron, molybdenum and oxygen; M is at least one element selected from the group consisting of potassium, rubidium and cesium; a, b, c, d, e, f, g, and h are respectively numbers of atoms of Ni, Co, Fe, Bi, B, Mo, O and M; and wherein a and b are 0 to 15, a plus b is 2 to 15, c is 0.5 to 7, d is 0.1 to 4, e is 0.5 to 4, f is 12, g is 35 to 85, and h is 0.01 to 0.5.
Claim 3
Dependent Claim
43 words
The process of claim 1, wherein a is 3 to 11, b is 0, c is 1 to 3, d is 1 to 3, e is 0.5 to 1, f is 12. g is 45 to 70, and h is 0.1 to 0.3.
Claim 4
Dependent Claim
43 words
The process of claim 1, wherein a is 0, b is 2 to 7, c is 1 to 3, d is 1 to 3, e is 0.5 to 1, f is 12, g is 45 to 70 and h is 0.1 to 0.3.
Claim 5
Dependent Claim
59 words
The process of claim 1, wherein a is less than 11, b is less than 7, but neither a nor b is 0, a plus b is 2 to 11, c is 1 to 3, d is 1 to 3, e is 0.5 to 1, f is 12, g is 45 to 70, and h is 0.1 to 0.3.
Claim 6
Dependent Claim
14 words
The process of claim 1, wherein the catalyst is incorporated on a silica carrier.
Claim 7
Dependent Claim
16 words
The process of claim 1, wherein the reaction is carried out in the presence of steam.
Claim 8
Dependent Claim
19 words
The process of claim 1, wherein the reaction is carried out at a temperature of from 300° to 450°C.
Claim 9
Dependent Claim
10 words
The process of claim 1, wherein the olefin is propylene.
Claim 10
Dependent Claim
16 words
The process of claim 1, wherein the molar ratio of oxygen, steam and olefin is 0.5-4:1-20:1.
Claim 11
Dependent Claim
216 words
A process for increasing the single pass yield of unsaturated aldehydes in the oxidation of olefins to unsaturated aldehydes comprising reacting, in gaseous phase at a temperature of from 250° to 500°C at a pressure of from 0.5 to 10 atmospheres absolute, an olefin selected from the group consisting of propylene and isobutylene with a gas selected from the group consisting of air, oxygen and mixtures thereof in the presence of an oxidation catalyst of the general formula: Ni a Co b Fe c Bi d L e M h Mo f O g ; in which Ni, Co, Fe, Bi, Mo and O are respectively elements of nickel, cobalt, iron, bismuth, molybdenum and oxygen; L is at least one element selected from the group consisting of phosphorous, arsenic and boron; M is at least one element selected from the group consisting of potassium, rubidium and cesium; a, b, c, d, e, f, g, and h are respectively numbers of atoms of Ni, Co, Fe, Bi, L, Mo, O and M; and wherein a and b are 0 to 15, a plus b is 2 to 15, c is 0.5 to 7, d is 0.1 to 4, e is 0 to 4, f is 12, g is 35 to 85, and h is 0.01 to 0.5.
Claim 12
Dependent Claim
216 words
A process for increasing the single pass yield of unsaturated aldehydes in the oxidation of olefins to unsaturated aldehydes comprising reacting, in gaseous phase at a temperature of from 250° to 500°C at a pressure of from 0.5 to 10 atmospheres absolute, an olefin selected from the group consisting of propylene and isobutylene with a gas selected from the group consisting of air, oxygen and mixtures thereof in the presence of an oxidation catalyst of the general formula: Ni a Co b Fe c Bi d L e M h Mo f O g ; in which Ni, Co, Fe, Bi, Mo and O are respectively elements of nickel, cobalt, iron, bismuth, molybdenum and oxygen; L is at least one element selected from the group consisting of phosphorous, arsenic and boron; M is at least one element selected from the group consisting of potassium, rubidium and cesium; a, b, c, d, e, f, g, and h are respectively numbers of atoms of Ni, Co, Fe, Bi, L, Mo, O and M; and wherein a and b are 0 to 15, a plus b is 2 to 15, c is 0.5 to 7, d is 0.1 to 4, e is 0 to 4, f is 12, g is 35 to 85, and h is 0.01 to 0.5.
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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |