US4199522A
Expired / Lapsed
US
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Process for producing olefins from carbon monoxide and hydrogen
Assignee: Dow Chemical Co
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Filing: 1978-09-20
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Granted: 1980-04-22
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Expires: 1998-09-20
Abstract
Abstract Olefins of two to four carbon atoms are prepared by an improved Fischer-Tropsch process, the improvement comprising the use of a catalyst having a surface area less than about 100 m 2 /g and consisting essentially of: (1) at least one material selected from the group consisting of the sulfide, oxide or metal of Mo, W, Re, Ru, Ni, Pd, Rh, Os, Ir and Pt; (2) at least one material selected from the group consisting of the hydroxide, oxicde or salt of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba and Th; and (3) optionally, a support.
Inventors
- 👤 Craig B. Murchison
- 👤 Dewey A. Murdick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:17
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2521/10; C07C2521/18; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/12; C07C2523/16; C07C2523/24; C07C2523/28; C07C2523/30; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/755; C07C2527/00; C07C2527/02; C07C2527/04; C07C2527/043; C07C2527/045; C07C2527/047; C07C2527/051
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
150 words
In a process for producing hydrocarbons by contacting carbon monoxide and hydrogen at reactive conditions, the improvement which comprises increasing the yield of olefinic hydrocarbons containing from two to four carbon atoms by contacting the carbon monoxide and hydrogen with a catalyst having a surface area less than about 100 m 2 /g and consisting essentially of: (A) between about 1 percent and about 95 percent by weight based upon the weight of the catalyst of at least one material selected from the group consisting of the sulfide, oxide or metal of molybdenum, tungsten, rhenium, ruthenium, nickel, palladium, rhodium, osmium, iridium and platinum; and (B) between about 0.05 percent and about 50 percent by weight based upon the weight of the catalyst of at least one material selected from the group consisting of the hydroxide, oxide or salt of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium and thorium.
Claim 2
Dependent Claim
150 words
In a process for producing hydrocarbons by contacting carbon monoxide and hydrogen at reactive conditions, the improvement which comprises increasing the yield of olefinic hydrocarbons containing from two to four carbon atoms by contacting the carbon monoxide and hydrogen with a catalyst having a surface area less than about 100 m 2 /g and consisting essentially of: (A) between about 1 percent and about 95 percent by weight based upon the weight of the catalyst of at least one material selected from the group consisting of the sulfide, oxide or metal of molybdenum, tungsten, rhenium, ruthenium, nickel, palladium, rhodium, osmium, iridium and platinum; and (B) between about 0.05 percent and about 50 percent by weight based upon the weight of the catalyst of at least one material selected from the group consisting of the hydroxide, oxide or salt of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium and thorium.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the catalyst has a surface area less than about 40 m 2 /g.
Claim 4
Dependent Claim
36 words
The process of claim 2 wherein the catalyst consists essentially of, in addition to A and B, between about 1 and about 98.95 percent by weight based upon the weight of the catalyst of a support.
Claim 5
Dependent Claim
20 words
The process of claim 3 wherein the support is alumina, carbon, silica, zirconia, zircon, magnesia, titanium dioxide or mixtures thereof.
Claim 6
Dependent Claim
10 words
The process of claim 3 wherein the support is alumina.
Claim 7
Dependent Claim
30 words
The process of claim 3 wherein B is at least one material selected from the group consisting of the hydroxide, oxide or salt of lithium, sodium, potassium, rubidium or cesium.
Claim 8
Dependent Claim
25 words
The process of claim 3 wherein B is at least one material selected from the group consisting of the hydroxide, oxide or salt of potassium.
Claim 9
Dependent Claim
27 words
The process of claim 3 wherein A is at least one material selected from the group consisting of the sulfide, oxide or metal of molybdenum or tungsten.
Claim 10
Dependent Claim
25 words
The process of claim 3 wherein A is at least one material selected from the group consisting of the sulfide, oxide or metal of molybdenum.
Claim 11
Dependent Claim
30 words
The process of claim 8 wherein B is at least one material selected from the group consisting of the hydroxide, oxide or salt of lithium, sodium, potassium, rubidium or cesium.
Claim 12
Dependent Claim
20 words
The process of claim 10 wherein the support is alumina, carbon, silica, zirconia, zircon, magnesia, titanium dioxide or mixtures thereof.
Claim 13
Dependent Claim
25 words
The process of claim 11 wherein A is at least one material selected from the group consisting of the sulfide, oxide or metal of molybdenum.
Claim 14
Dependent Claim
25 words
The process of claim 12 wherein B is at least one material selected from the group consisting of the hydroxide, oxide or salt of potassium.
Claim 15
Dependent Claim
10 words
The process of claim 13 wherein the support is alumina.
Claim 16
Dependent Claim
19 words
The process of claim 3 wherein the catalyst consists essentially of between about 10 and about 50 percent A.
Claim 17
Dependent Claim
19 words
The process of claim 15 wherein the catalyst consists essentially of between about 1 and about 10 percent B.
Claim 18
Dependent Claim
19 words
The process of claim 16 wherein the catalyst consists essentially of at least about 40 percent of the support.
Claim 19
Dependent Claim
19 words
The process of claim 16 wherein the catalyst consists essentially of at least about 60 percent of the support.
Claim 20
Dependent Claim
20 words
The process of claim 18 wherein the support is alumina, carbon, silica, zirconia, zircon, magnesia, titanium dioxide or mixtures thereof.
Claim 21
Dependent Claim
10 words
The process of claim 18 wherein the support is alumina.
Claim 22
Dependent Claim
30 words
The process of claim 18 wherein B is at least one material selected from the group consisting of the hydroxide, oxide or salt of lithium, sodium, potassium rubidium or cesium.
Claim 23
Dependent Claim
25 words
The process of claim 18 wherein B is at least one material selected from the group consisting of the hydroxide, oxide or salt of potassium.
Claim 24
Dependent Claim
27 words
The process of claim 18 wherein A is at least one material selected from the group consisting of the sulfide, oxide or metal of molybdenum and tungsten.
Claim 25
Dependent Claim
25 words
The process of claim 18 wherein A is at least one material selected from the group consisting of the sulfide, oxide or metal of molybdenum.
Claim 26
Dependent Claim
30 words
The process of claim 23 wherein B is at least one material selected from the group consisting of the hydroxide, oxide or salt of lithium, sodium, potassium, rubidium and cesium.
Claim 27
Dependent Claim
20 words
The process of claim 25 wherein the support is alumina, silica, carbon, zirconia, zircon, magnesia, titanium dioxide or mixtures thereof.
Claim 28
Dependent Claim
15 words
The process of claim 26 wherein A is a sulfide, oxide or metal of molybdenum.
Claim 29
Dependent Claim
15 words
The process of claim 27 wherein B is a hydroxide, oxide or salt of potassium.
Claim 30
Dependent Claim
10 words
The process of claim 28 wherein the support is alumina.
References Cited (Backward Citations)
US2284468A
Cited
GB593940A
Cited
US2490488A
Cited
US2973384A
Cited
US2960518A
Cited
US3240698A
Cited
US3842121A
Cited
US3842113A
Cited
US3941819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |