US4690777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of synthesis gas
Assignee: Standard Oil Co
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Filing: 1983-11-02
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Granted: 1987-09-01
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Expires: 2003-11-02
Abstract
Abstract Gas mixtures containing at least hydrogen and carbon monoxide are prepared by reforming hydrocarbons in the presence of a catalyst impregnated on a specially prepared porous catalyst support. In one embodiment of the present invention, methane is reformed in a process to produce a product gas mixture containing carbon monoxide and hydrogen in the presence of a catalyst comprising a porous catalytic support having a surface area greater than 1 to less than about 350 m2/gm and a pore volume of about 0.4 to about 3 cc/gm and at least one Group VIII metal or mixture thereof on the pore surface of the support.
Inventors
- 👤 Louis J. Valenyi
- 👤 Frederick A. Pesa
- 👤 Christos Paparizos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:54
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J35/00; B01J35/60; B01J35/61; B01J35/613; B01J35/615; B01J35/63; B01J35/635; B01J35/638; B01J35/66; B01J2235/00; B01J2235/30; B01J35/40; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; Y; Y02; Y02P; Y02P20/00; Y02P20/141; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
114 words
A process for reforming light hydrocarbons selected from the group consisting of olefins having from 2 to about 4 carbon atoms and paraffins having from 1 to about 4 carbon atoms, to a product gas mixture containing at least carbon monoxide and hydrogen comprising contacting the light hydrocarbons with carbon dioxide in the presence of a catalytic amount of a catalyst comprising a porous catalyst support having a surface area greater than 1 to less than about 350 m 2 /gm and a pore volume of about 0.4 to about 3 cc/gm and at least one Group VIII metal or mixture thereof on a pore surface of the support in the absence of steam.
Claim 2
Dependent Claim
114 words
A process for reforming light hydrocarbons selected from the group consisting of olefins having from 2 to about 4 carbon atoms and paraffins having from 1 to about 4 carbon atoms, to a product gas mixture containing at least carbon monoxide and hydrogen comprising contacting the light hydrocarbons with carbon dioxide in the presence of a catalytic amount of a catalyst comprising a porous catalyst support having a surface area greater than 1 to less than about 350 m 2 /gm and a pore volume of about 0.4 to about 3 cc/gm and at least one Group VIII metal or mixture thereof on a pore surface of the support in the absence of steam.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the light hydrocarbon is methane.
Claim 4
Dependent Claim
34 words
The process of claim 2 wherein the surface area of the catalyst support is from 6 to about 250 m 2 /gm and the pore volume is from about 1 to about 2 cc/gm.
Claim 5
Dependent Claim
23 words
The process of claim 2 wherein the catalyst support exhibits no measurable pores having a pore diameter of less than about 50 Angstroms.
Claim 6
Dependent Claim
11 words
The process of claim 2 wherein the catalyst support is silica.
Claim 7
Dependent Claim
21 words
The process of claim 2 wherein the Group VIII metal is selected from the group consisting of iron, cobalt or nickel.
Claim 8
Dependent Claim
12 words
The process of claim 2 wherein the Group VIII metal is nickel.
Claim 9
Dependent Claim
17 words
The process of claim 2 wherein the temperature is from about 350° C. to about 850° C.
Claim 10
Dependent Claim
16 words
The process of claim 2 wherein the pressure is from about 1 to about 2 atmospheres.
Claim 11
Dependent Claim
29 words
The process of claim 2 wherein the Group VIII metal is present on the pore surface of the support in an amount of about 1.5 to about 3 layers.
Claim 12
Dependent Claim
25 words
The process of claim 1 wherein at least 80 percent of the catalyst support has a particle size distribution ranging between 5 to 300 microns.
Claim 13
Dependent Claim
25 words
The process of claim 11 wherein at least 80 percent of the catalyst support has a particle size distribution ranging between 20 to 150 microns.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |