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US3968166A
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Catalytic process for the preparation of acrolein
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1975-05-30
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Granted: 1976-07-06
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Expires: 1995-05-30
Abstract
Abstract A process for the preparation of acrolein by the vapor phase catalytic oxidation of propylene which comprises contacting propylene and oxygen with a catalyst composition comprising a catalyst system of the formula: Mo.sub.a Bi.sub.b Fe.sub.c Ni.sub.d Tl.sub.e P.sub.f X.sub.g Y.sub.h O i Wherein X is one or more of Mg, Mn and Co, Y is one or more of Cu, Ca, Sr, Zn, Cd, Sn and Pb and a, b, c, d, e, f, g, h and i represent respectively the number of atoms and, when a is 12, b is 0.1 to 5, c is 0.1 to 12, d is 0.1 to 12, e is 1 or less but not 0, f is 0 to 5, g is 0 to 12, h is 0.1 to 12 and i is a number determined by the valence requirements of the other atoms present and from 36.5 to 95.8, provided that b plus c is from 0.2 to 12.5 and d plus g plus h is from 0.2 to 27. The process can provide acrolein in a high selectivity and an excellent single pass yield even at a large space velocity of the propylene feed.
Inventors
- 👤 Tatsuo Shiraishi
- 👤 Susumu Kishiwada
- 👤 Shinkichi Shimizu
- 👤 Shigeru Honmaru
- 👤 Akihiko Atsumi
- 👤 Hiroshi Ichihashi
- 👤 Yoshihiko Nagaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:59
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; B01J27/192; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
230 words
A process for preparing acrolein by the vapor phase oxidation of propylene which comprises contacting propylene and oxygen at a temperature of from 200° to 550° C., a pressure of from 0.7 to 5 absolute atmospheres and a space velocity of 100 to 24,000 liter-gas/liter-catalyst/hour in a mole ratio of propylene to oxygen of 1 : 0.4 to 1 : 3 in the presence of a catalyst composition consisting essentially of a catalyst system of the formula: Mo.sub.a Bi.sub.b Fe.sub.c Ni.sub.d Tl.sub.e P.sub.f X.sub.g Y.sub.h O.sub.i wherein X is at least one member selected from the group consisting of Mg, Mn and Co, Y is at least one member selected from the group consisting of Cu, Ca, Sr, Zn, Cd, Sn and Pb and a, b, c, d, e, f, g, h and i represent respectively the number of atoms and a is 12, b is from 0.1 to 5, c is from 0.1 to 12, d is from 0.1 to 12, e is 1 or less but not 0, f is from 0 to 5, g is from 0 to 12, h is from 0.1 to 12 and i is a number determined by the valence requirements of the other atoms present, provided that the sum of b plus c is from 0.2 to 12.5 and the sum of d plus g plus h is from 0.2 to 27.
Claim 2
Dependent Claim
230 words
A process for preparing acrolein by the vapor phase oxidation of propylene which comprises contacting propylene and oxygen at a temperature of from 200° to 550° C., a pressure of from 0.7 to 5 absolute atmospheres and a space velocity of 100 to 24,000 liter-gas/liter-catalyst/hour in a mole ratio of propylene to oxygen of 1 : 0.4 to 1 : 3 in the presence of a catalyst composition consisting essentially of a catalyst system of the formula: Mo.sub.a Bi.sub.b Fe.sub.c Ni.sub.d Tl.sub.e P.sub.f X.sub.g Y.sub.h O.sub.i wherein X is at least one member selected from the group consisting of Mg, Mn and Co, Y is at least one member selected from the group consisting of Cu, Ca, Sr, Zn, Cd, Sn and Pb and a, b, c, d, e, f, g, h and i represent respectively the number of atoms and a is 12, b is from 0.1 to 5, c is from 0.1 to 12, d is from 0.1 to 12, e is 1 or less but not 0, f is from 0 to 5, g is from 0 to 12, h is from 0.1 to 12 and i is a number determined by the valence requirements of the other atoms present, provided that the sum of b plus c is from 0.2 to 12.5 and the sum of d plus g plus h is from 0.2 to 27.
Claim 3
Dependent Claim
56 words
The process of claim 1 wherein a is 12, b is from 0.1 to 5, c is from 0.1 to 7.5, d is from 0.1 to 12, e is from 0.05 to 1, f is up to 2, g is up to 9, h is from 0.1 to 6 and i is from 36.4 to 77.0.
Claim 4
Dependent Claim
82 words
The process of claim 1 wherein a is 12, b is from 0.1 to 5, c is from 0.1 to 7.5, d is from 0.1 to 12, e is from 0.05 to 1, f is up to 2, g is up to 9, h is from 0.1 to 6 and i is 42.8 to 70.5, provided that the sum of b plus c is from 0.5 to 10 and the sum of d plus g plus h is from 6 to 13.
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein X is one or two members selected from the group consisting of Mg, Mn and Co.
Claim 6
Dependent Claim
26 words
The process of claim 1 wherein Y is one or two members selected from the group consisting of Cu, Ca, Sr, Zn, Cd, Sn and Pb.
Claim 7
Dependent Claim
23 words
The process of claim 5 wherein Y is one or two members selected from the group consisting of Cu, Zn, Cd and Sn.
Claim 8
Dependent Claim
9 words
The process of claim 5 wherein Y is Zn.
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein the catalyst composition consists essentially of said catalyst system.
Claim 10
Dependent Claim
20 words
The process of claim 1 wherein the reaction is carried out at a temperature of from 250° to 500° C.
Claim 11
Dependent Claim
14 words
The process of claim 9 wherein the temperature is from 300° to 450° C.
Claim 12
Dependent Claim
21 words
The process of claim 1 wherein the reaction is carried out at a space velocity of from 200 to 12,000 liter-gas/liter-catalyst/hour.
Claim 13
Dependent Claim
20 words
The process of claim 11 wherein the reaction is carried out at a space velocity of 300 to 8,000 liter-gas/liter-catalyst/hour.
Claim 14
Dependent Claim
22 words
The process of claim 1 wherein the mole ratio of propylene to oxygen is from 1 : 0.4 to 1 : 3.
Claim 15
Dependent Claim
16 words
The process of claim 1 wherein the reaction is carried out in the presence of steam.
Claim 16
Dependent Claim
17 words
The process of claim 14 wherein the steam is mixed with a mixture of propylene and oxygen.
Claim 17
Dependent Claim
22 words
The process of claim 15 wherein the mole ratio of steam to oxygen is from 1 : 1 to 15 : 1.
References Cited (Backward Citations)
US3454630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |