US4206134A
Expired / Lapsed
US
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Ruthenium supported on manganese oxide as hydrocarbon synthesis catalysts in CO/H2 reactions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1979-03-12
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Granted: 1980-06-03
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Expires: 1999-03-12
Abstract
Abstract An improved method is disclosed for the selective synthesis of low molecular weight olefins, particularly C2 and C3 olefins inclusive, which method comprises the steps of passing a CO and H2 synthesis gas stream over a catalyst at a temperature and pressure and for a time sufficient to generate the desired olefinic products, wherein the improvement consists in using as a catalyst ruthenium on a support selected from the group consisting of a manganese oxide, other manganese-containing oxides or mixtures of various manganese oxides. The weight loading of the ruthenium may range from about 0.01 to about 15 wt. % based on the total catalyst weight. The operating conditions of the instant process are the standard Fischer-Tropsch synthesis reaction parameters, preferably an H2/CO mole ratio of from about 10 to about 0.1, a space velocity of from about 100 hr-1 to about 50,000 hr-1, a temperature of from about 100 DEG C. to about 500 DEG C. and a pressure of from about 103 to about 1.03x105 kPa (103 kPa - 1 atm). The instant process is also marked by a reduced methane make.
Inventors
- 👤 Edwin L. Kugler
- 👤 Samuel J. Tauster
- 👤 Shun C. Fung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:24
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/462; 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; C07C2521/18; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/14; C07C2523/16; C07C2523/20; C07C2523/32; C07C2523/34; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/656
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
A process for the enhanced synthesis of C 2 -C 4 olefins with reduced production of methane comprising the steps of passing H 2 and CO in an H 2 /CO ratio of from about 10 to about 0.1 over a catalyst reduced at a temperature greater than about 300° C. comprising ruthenium on a manganese-containing oxide support, wherein said manganese-containing oxide support is selected from the group consisting of MnO, Al 2 O 3 -MnO, SiO 2 -MnO, MnO-carbon, Group IVB-manganese oxide, Group VB-manganese oxides, Group IA-manganese oxides, Group IIA-manganese oxides, rare earth-manganese oxides and mixtures thereof, at a space velocity of from about 100 hr -1 to about 50,000 hr -1 , at a temperature of from about 100° C. to about 500° C., at a pressure of from about 103 to about 1.03×10 5 kPa for a time sufficient to effect the generation of the desired olefinic product, wherein the concentration of said ruthenium in said catalyst is from about 0.01 to about 15% by weight.
Claim 2
Dependent Claim
169 words
A process for the enhanced synthesis of C 2 -C 4 olefins with reduced production of methane comprising the steps of passing H 2 and CO in an H 2 /CO ratio of from about 10 to about 0.1 over a catalyst reduced at a temperature greater than about 300° C. comprising ruthenium on a manganese-containing oxide support, wherein said manganese-containing oxide support is selected from the group consisting of MnO, Al 2 O 3 -MnO, SiO 2 -MnO, MnO-carbon, Group IVB-manganese oxide, Group VB-manganese oxides, Group IA-manganese oxides, Group IIA-manganese oxides, rare earth-manganese oxides and mixtures thereof, at a space velocity of from about 100 hr -1 to about 50,000 hr -1 , at a temperature of from about 100° C. to about 500° C., at a pressure of from about 103 to about 1.03×10 5 kPa for a time sufficient to effect the generation of the desired olefinic product, wherein the concentration of said ruthenium in said catalyst is from about 0.01 to about 15% by weight.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the manganese containing oxide is MnO.
Claim 4
Dependent Claim
56 words
The process of claim 1 or 2 wherein the H 2 /CO ratio is from about 3 to about 0.25, the temperature is from about 150° C. to about 450° C., the pressure is from about 103 to about 3090 kPa and the space velocity is about 3000 hr -1 to about 10,000 hr -1 .
Claim 5
Dependent Claim
41 words
The process of claim 1 or 2 wherein the H 2 /CO ratio is from about 2 to about 0.5, the temperature is from about 250° C. to about 350° C., the pressure is from about 103 to about 2060 kPa.
Claim 6
Dependent Claim
20 words
The process of claim 1 or 2 wherein the ruthenium loading is from about 0.1 to about 5 wt. %.
Claim 7
Dependent Claim
18 words
The process of claim 3 wherein the ruthenium loading is from about 0.1 to about 5 wt. %.
Claim 8
Dependent Claim
18 words
The process of claim 4 wherein the ruthenium loading is from about 0.1 to about 5 wt. %.
Claim 9
Dependent Claim
20 words
The process of claim 1 or 2 wherein the ruthenium loading is from about 0.5 to about 3 wt. %.
Claim 10
Dependent Claim
18 words
The process of claim 3 wherein the ruthenium loading is from about 0.5 to about 3 wt. %.
Claim 11
Dependent Claim
18 words
The process of claim 4 wherein the ruthenium loading is from about 0.5 to about 3 wt. %.
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) | 1983-06-03 | 1983-12-03 | 1984-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-03 | 1987-12-03 | 1988-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-03 | 1991-12-03 | 1992-06-03 | $7700.00 | Window Closed / Lapsed |