Patent US4367166A successfully refreshed from Google Patents.
US4367166A
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US
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Steam reforming catalyst and a method of preparing the same
Assignee: Toyota Central R&D Labs Inc
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Filing: 1981-07-13
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Granted: 1983-01-04
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Expires: 2001-07-13
Abstract
Abstract A catalyst for the steam reforming of hydrocarbons into gases such as methane, hydrogen and carbon monoxide and a method of preparing the same. The catalyst which comprises cerium oxide and rhodium supported on a carrier can maintain high catalytic activity and durability for steam reforming without any carbon deposition on its surface.
Inventors
- 👤 Yoshiyasu Fujitani
- 👤 Hideaki Muraki
- 👤 Makoto Tomita
- 👤 Hideo Sobukawa
- 👤 Masayuki Fukui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:54
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/63; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1064; C01B2203/1082; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
46 words
A catalyst for the steam reforming of hydrocarbons which consists essentially of cerium oxide and rhodium as a catalyst ingredient supported on a carrier, wherin said catalyst contains 0.5 to 50% by weight cerium oxide and 0.01 to 10% by weight rhodium, based on said carrier.
Claim 2
Dependent Claim
46 words
A catalyst for the steam reforming of hydrocarbons which consists essentially of cerium oxide and rhodium as a catalyst ingredient supported on a carrier, wherin said catalyst contains 0.5 to 50% by weight cerium oxide and 0.01 to 10% by weight rhodium, based on said carrier.
Claim 3
Dependent Claim
17 words
The catalyst according to claim 1, wherein said carrier is a porous body of magnesia alumina spinel.
Claim 4
Dependent Claim
26 words
The catalyst according to claim 1, wherein said carrier is a porous body of a material selected from the group consisting of α-alumina, δ-alumina and cordierite.
Claim 5
Dependent Claim
21 words
The catalyst according to claim 1, wherein an average pore diameter of said carrier ranges from 200 A to 15,000 A.
Claim 6
Dependent Claim
68 words
A method of producing the catalyst of claim 2, which comprises: mixing a magnesia powder with an alumina powder having an average particle diameter of 100 A to 15,000 A; molding the mixed powder into a desired shape; sintering the molded product by heating to form a porous sintered body; and supporting cerium oxide and rhodium as a catalyst ingredient on said porous sintered body as a carrier.
Claim 7
Dependent Claim
21 words
The method according to claim 5, wherein an average particle diameter of the alumina powder ranges from 0.1 to 500 μm.
Claim 8
Dependent Claim
24 words
The method according to claim 5, wherein the proportion of the alumina powder to the magnesia powder ranges from 1.5 to 10 by weight.
Claim 9
Dependent Claim
24 words
The method according to claim 5, wherein said molded product is sintered by heating at a temperature ranging from 1,200° C. to 1,600° C.
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) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |