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US4171320A
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Hydrocarbon synthesis from CO and H2 using Ru supported on group VB metal oxides
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-10-19
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Granted: 1979-10-16
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Expires: 1997-10-19
Abstract
Abstract An improved method for the synthesis of hydrocarbons with reduced methane formation and for the selective generation of olefinic hydrocarbons, preferably C2-C5 olefins inclusive, which method comprises the steps of passing a CO and H2 synthesis gas stream over a catalyst at a temperature and pressure for a time sufficient to generate the desired olefinic products, wherein the improvement consists in using as a catalyst ruthenium on a support comprising at least one refractory Group VB metal oxide. The weight loading of the ruthenium may range from about 0.01 to about 15 wt. % based on the total catalyst weight. The ruthenium average crystallite size is preferably less than 5 nm (50A). The operating conditions of the instant process are typical for Fischer-Tropsch synthesis.
Inventors
- 👤 M. Albert Vannice
- 👤 Samuel J. Tauster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:02
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/462; B01J23/54; B01J23/56; B01J23/64; B01J23/648; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/18; C07C2523/00; C07C2523/16; C07C2523/20; C07C2523/22; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/648
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
214 words
A process for the synthesis of olefins of from C 2 to C 5 chain length inclusive, said process comprising the steps of passing H 2 and CO at a H 2 /CO ratio of 0.1 to about 10 over a catalyst comprising ruthenium on a support selected from the group consisting of V 2 O 3 , Nb 2 O 5 , Ta 2 O 5 , Al 2 O 3 -V 2 O 3 , Al 2 O 3 -Nb 2 O 5 , Al 2 O 3 -Ta 2 O 5 , SiO 2 -V 2 O 3 , SiO 2 -Nb 2 O 5 , SiO 2 -Ta 2 O 5 , V 2 O 3 -carbon, Nb 2 O 5 -carbon, Ta 2 O 5 -carbon, alkaline earth-group VB oxides, alkali-Group VB oxides, rare earth-Group VB oxides, Group IVB-Group VB oxides and mixtures thereof, at a space velocity of from 100 to 50,000 hr -1 , at a temperature of from 100° to 500° C., at a pressure of from 100 to 10 5 kPa for a time sufficient to effect the generation of the desired olefinic products wherein the concentration of said ruthenium in said catalyst is from 0.01 to 15 wt. % based on total catalyst weight.
Claim 2
Dependent Claim
214 words
A process for the synthesis of olefins of from C 2 to C 5 chain length inclusive, said process comprising the steps of passing H 2 and CO at a H 2 /CO ratio of 0.1 to about 10 over a catalyst comprising ruthenium on a support selected from the group consisting of V 2 O 3 , Nb 2 O 5 , Ta 2 O 5 , Al 2 O 3 -V 2 O 3 , Al 2 O 3 -Nb 2 O 5 , Al 2 O 3 -Ta 2 O 5 , SiO 2 -V 2 O 3 , SiO 2 -Nb 2 O 5 , SiO 2 -Ta 2 O 5 , V 2 O 3 -carbon, Nb 2 O 5 -carbon, Ta 2 O 5 -carbon, alkaline earth-group VB oxides, alkali-Group VB oxides, rare earth-Group VB oxides, Group IVB-Group VB oxides and mixtures thereof, at a space velocity of from 100 to 50,000 hr -1 , at a temperature of from 100° to 500° C., at a pressure of from 100 to 10 5 kPa for a time sufficient to effect the generation of the desired olefinic products wherein the concentration of said ruthenium in said catalyst is from 0.01 to 15 wt. % based on total catalyst weight.
Claim 3
Dependent Claim
120 words
The process of claim 1 wherein the support comprising a Group VB metal oxide or mixture thereof is selected from the group consisting of V 2 O 3 , Nb 2 O 5 , Ta 2 O 5 , Al 2 O 3 -V 2 O 3 , Al 2 O 3 -Nb 2 O 5 , Al 2 O 3 -Ta 2 O 5 , SiO 2 -V 2 O 3 , SiO 2 -Nb 2 O 5 , SiO 2 -Ta 2 O 5 , V 2 O 3 -carbon, Nb 2 O 5 -carbon, Ta 2 O 5 -carbon, alkaline earth-Group VB oxides, alkali-Group VB oxides, rare earth-Group VB oxides, Group IVB-Group VB oxides and mixtures thereof.
Claim 4
Dependent Claim
36 words
The process of claim 1 wherein the Group VB metal oxide is selected from the group consisting of V 2 O 3 , Nb 2 O 5 , Ta 2 O 5 , and mixtures thereof.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the Group VB metal oxide is V 2 O 3 .
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the group VB metal oxide is Nb 2 O 5 .
Claim 7
Dependent Claim
17 words
The process of claim 1 wherein the group VB metal oxide is Ta 2 O 5 .
Claim 8
Dependent Claim
26 words
The process of claim 1 wherein the ruthenium concentration is from about 0.1 to about 10 wt. % based on the total weight of the catalyst.
Claim 9
Dependent Claim
26 words
The process of claim 7 wherein the ruthenium concentration is from about 0.5 to about 5 wt. % based on the total weight of the catalyst.
Claim 10
Dependent Claim
24 words
The process of claim 2 wherein said ruthenium supported catalyst has a ruthenium particle crystallite size of from about 1 to about 20 nm.
Claim 11
Dependent Claim
19 words
The process of claim 9 wherein said ruthenium particle crystallite size is from about 1 to about 10 nm.
Claim 12
Dependent Claim
19 words
The process of claim 10 wherein said ruthenium particle crystallite size is from about 1 to about 5 nm.
Claim 13
Dependent Claim
18 words
The process of claim 1 wherein the catalyst is reduced at a temperature of greater than 300° C.
Claim 14
Dependent Claim
24 words
The process of claim 1 wherein the support has a surface area of from about 1 to about 200 m 2 g -1 .
Claim 15
Dependent Claim
36 words
The process of claim 1 wherein the H 2 /CO ratio is about 0.5 to about 4, the pressure is from about 100 to 3100 kPa and the temperature is about 150° to about 400° C.
Claim 16
Dependent Claim
37 words
The process of claim 1 wherein the H 2 /CO ratio is about 1 to about 3, the pressure is from about 100 to about 2060 kPa and the temperature is about 150° to about 300° C.
Claim 17
Dependent Claim
14 words
The process of claim 14 wherein the support is Nb 2 O 5 .
Claim 18
Dependent Claim
14 words
The process of claim 14 wherein the support is Ta 2 O 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) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |