US3893945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst composition for oxidation of butenes
Assignee: Mitsubishi Chemical Corp
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Filing: 1973-11-05
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Granted: 1975-07-08
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Expires: 1993-11-05
Abstract
Abstract A novel catalyst composition for vapor-phase oxidation of butenes which is active at a temperature in the range from 250* to 450*C and capable of converting n-butenes and iso-butene selectively into 1,3-butadiene and methacrolein, respectively. The said catalyst composition contains tungsten, molybdenum, tellurium, antimony and oxygen, one combination selected from among (a) nickel and cobalt, (b) nickel and iron, (c) nickel, cobalt and bismuth and (d) nickel, iron and bismuth, and at least one member selected from the group consisting of potassium, rubidium and cesium. Phosphorus and/or tin may also be added to the catalyst composition.
Inventors
- 👤 Masao Kobayashi
- 👤 Minoru Ikeda
- 👤 Kantaro Yamada
- 👤 Hiromichi Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:33
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; B01J27/14; B01J27/186; B01J27/188; B01J27/19; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
187 words
THE CATALYST COMPOSITION FOR THE VAPOR-PHASE OXIDATION OF BUTENES AT A TEMPERATURE IN THE RANGE OF 250*-450*C WHICH OXIDES N-BUTENES AND ISO-BUTENE RESPECTIVELY TO 1,3-BUTADIENE AND MATHACROLEIN RESPECTIVELY, CONSISTING ESSENTIALLY OF: A FIRST COMPONENT OF A MIXTURE OF OXIDES TUNGSTEN, MOLYBDENUM, TELLURIUM AND ANIMONY, WHEREIN THE W/MO ATOMIC RATIO RANGES FROM 0.01 TO 100, THE TE(W+MO) ATOMIC RATIO RANGES FROM 0.01 TO 0.2, AND THE SB(W+MO) ATOMIC RATIO RANGES FROM 0.01 TO 1, A SECOND COMPONENT OF ONE METAL OXIDE MIXTURE OF NICKEL AND COBALT, NICKEL AND IRON, NICKEL, COBALT AND BISMUTH, OR NICKEL, IRON AND BISMUTH, WHEREIN THE ATOMIC RATIO OF THE COMBINED METALS OF EACH METAL OXIDE MIXTURE TO W+MO IS IN THE RANGE OF 0.08-2 AND WHEREIN THE ATOMIC RATIO OF THE INDIVIDUAL METALS OF EACH METAL OXIDE MIXTURE TO W+MO IS IN THE RANGE OF 0.02-1, AND A THIRD COMPONENT OF AT LEAST ONE ALKALI METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, RUBIDIUM AND CESIUM, WHEREIN THE ATOMIC RATIO OF THE ALKALI METAL OF EACH ALKALI METAL OXIDE OR EACH ALKALI METAL OXIDE MIXTURE TO W+MO RANGES FROM 0.0005 TO 0.3.
Claim 2
Dependent Claim
187 words
THE CATALYST COMPOSITION FOR THE VAPOR-PHASE OXIDATION OF BUTENES AT A TEMPERATURE IN THE RANGE OF 250*-450*C WHICH OXIDES N-BUTENES AND ISO-BUTENE RESPECTIVELY TO 1,3-BUTADIENE AND MATHACROLEIN RESPECTIVELY, CONSISTING ESSENTIALLY OF: A FIRST COMPONENT OF A MIXTURE OF OXIDES TUNGSTEN, MOLYBDENUM, TELLURIUM AND ANIMONY, WHEREIN THE W/MO ATOMIC RATIO RANGES FROM 0.01 TO 100, THE TE(W+MO) ATOMIC RATIO RANGES FROM 0.01 TO 0.2, AND THE SB(W+MO) ATOMIC RATIO RANGES FROM 0.01 TO 1, A SECOND COMPONENT OF ONE METAL OXIDE MIXTURE OF NICKEL AND COBALT, NICKEL AND IRON, NICKEL, COBALT AND BISMUTH, OR NICKEL, IRON AND BISMUTH, WHEREIN THE ATOMIC RATIO OF THE COMBINED METALS OF EACH METAL OXIDE MIXTURE TO W+MO IS IN THE RANGE OF 0.08-2 AND WHEREIN THE ATOMIC RATIO OF THE INDIVIDUAL METALS OF EACH METAL OXIDE MIXTURE TO W+MO IS IN THE RANGE OF 0.02-1, AND A THIRD COMPONENT OF AT LEAST ONE ALKALI METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, RUBIDIUM AND CESIUM, WHEREIN THE ATOMIC RATIO OF THE ALKALI METAL OF EACH ALKALI METAL OXIDE OR EACH ALKALI METAL OXIDE MIXTURE TO W+MO RANGES FROM 0.0005 TO 0.3.
Claim 3
Dependent Claim
25 words
The catalyst composition of claim 1, which further comprises the presence of tin oxide, wherein the Sn/(W+Mo) atomic ratio has an upper limit of 1.
Claim 4
Dependent Claim
25 words
THE CATALYST COMPOSITION OF CLAIM 1, WHICH FURTHUR COMPRISES THE PRESENCE OF PHOSPHOROUS OXIDE, WHEREIN THE P/(W+MO) ATOMIC RATIO HAS AN UPPER LIMIT OF 1.
Claim 5
Dependent Claim
14 words
The catalyst composition of claim 1, wherein said alkali metal is potassium or rubidium.
Claim 6
Dependent Claim
20 words
The catalyst composition of claim 1, wherein said second component is a metal oxide mixture of nickel, iron and bismuth.
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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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |