US4110256A
Expired / Lapsed
US
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Catalyst for reforming fuel and method for producing same
Assignee: Soken Inc
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Filing: 1977-06-10
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Granted: 1978-08-29
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Expires: 1997-06-10
Abstract
Abstract A catalyst for reforming fuel into a reformed gas rich in hydrogen comprises a catalyst carrier consisting of γ-Al 2 O 3 and a catalyst metal mixture of the Cu--Ni--Cr type supported on the carrier, the metal mixture having the following composition: Cu = 36-62% by weight, Ni = 8-32% by weight, and Cr = 18-41% by weight, provided that Cu + Ni + Cr = 100% by weight. This catalyst is effective in reforming a fuel, especially methyl alcohol, into hydrogen over a wide temperature range from a low temperature to a high temperature. It is further improved by impregnating the carrier with at least one metal oxide selected from BaO, La 2 O 3 , SiO 2 , CeO 2 , and SrO or by admixing the catalyst metal mixture with at least one of the oxides.
Inventors
- 👤 Yukihisa Takeuchi
- 👤 Masao Wakayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:19
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
66 words
A catalyst for reforming a fuel, comprising a catalyst carrier consisting essentially of γ-Al 2 O 3 and a catalyst metal mixture containing Cu, Ni and Cr supported on said carrier, said catalyst metal mixture having the following composition: Cu = 36-62% by weight, Ni = 8-32% by weight, and Cr = 18-41% by weight, provided that Cu + Ni + Cr = 100% by weight.
Claim 2
Dependent Claim
66 words
A catalyst for reforming a fuel, comprising a catalyst carrier consisting essentially of γ-Al 2 O 3 and a catalyst metal mixture containing Cu, Ni and Cr supported on said carrier, said catalyst metal mixture having the following composition: Cu = 36-62% by weight, Ni = 8-32% by weight, and Cr = 18-41% by weight, provided that Cu + Ni + Cr = 100% by weight.
Claim 3
Dependent Claim
33 words
A catalyst for reforming a fuel as set forth in claim 1, wherein the amount of the catalyst metal mixture is 16% by weight or more based on the weight of catalyst carrier.
Claim 4
Dependent Claim
44 words
A catalyst for reforming a fuel as set forth in claim 1, wherein the catalyst carrier has deposited thereon at least one metal oxide selected from the group consisting of BaO, La 2 O 3 , SiO 2 , CeO 2 , and SrO.
Claim 5
Dependent Claim
55 words
A catalyst for reforming a fuel as set forth in claim 1, further comprising at least one metal oxide selected from the group consisting of BaO, La 2 O 3 , SiO 2 , CeO 2 , and SrO, said metal oxide being admixed with the catalyst metal mixture and supported on the catalyst carrier.
Claim 6
Dependent Claim
41 words
A catalyst for reforming a fuel as set forth in claim 4, wherein the total weight, in terms of metal, of the catalyst metal mixture and the metal oxide is 16% or more based on the weight of the catalyst carrier.
Claim 7
Dependent Claim
81 words
A catalyst for reforming a fuel as set forth in claim 4, wherein SiO 2 is selected as the metal oxide and the catalyst metals and SiO 2 , in terms of metal, are present in the following proportions: Cu = 33 to 59% by weight, Ni = 5 to 30% by weight, Cr = 15 to 39% by weight, and Si = 1 to 10% by weight, provided that Cu + Ni + Cr + Si = 100% by weight.
Claim 8
Dependent Claim
81 words
A catalyst for reforming a fuel as set forth in claim 4, wherein CeO 2 is selected as the metal oxide and the catalyst metals and CeO 2 , in terms of metal, are present in the following proportions: Cu = 28 to 53% by weight, Ni = 3 to 24% by weight, Cr = 12 to 35% by weight, and Ce = 4 to 30% by weight, provided that Cu + Ni + Cr + Ce = 100% by weight.
Claim 9
Dependent Claim
78 words
A catalyst for reforming a fuel as set forth in claim 4, wherein SrO is selected as the metal oxide and the catalyst metals and SrO, in terms of metal, are present in the following proportions: Cu = 30 to 57% by weight, Ni = 3 to 27% by weight, Cr = 14 to 38% by weight, and Sr = 3 to 23% by weight, provided that Cu + Ni + Cr + Sr = 100% by weight.
Claim 10
Dependent Claim
85 words
A catalyst for reforming a fuel as set forth in claim 4, wherein La 2 O 3 is selected as the metal oxide and the catalyst metals and La 2 O 3 , in terms of metal, are present in the following proportions: Cu = 31 to 59% by weight, Ni = 3 to 28% by weight, Cr = 14 to 39% by weight, and La = 3 to 22% by weight, provided that Cu + Ni + Cr + La = 100% by weight.
Claim 11
Dependent Claim
78 words
A catalyst for reforming a fuel as set forth in claim 4, wherein BaO is selected as the metal oxide and the catalyst metals and BaO, in terms of metal, are present in the following proportions: Cu = 32 to 58% by weight, Ni = 5 to 29% by weight, Cr = 14 to 38% by weight, and Ba = 1 to 17% by weight, provided that Cu + Ni + Cr + Ba = 100% by weight.
Claim 12
Independent Claim
122 words
A method for producing a catalyst for reforming a fuel, comprising the steps of: preparing an aqueous solution containing 0.57 to 0.98 mole of Cu(NO 3 ) 2 .6H 2 O, 0.14 to 0.55 mole of Ni(NO 3 ) 2 .6H 2 O, and 0.34 to 0.79 mole of Cr(NO 3 ) 3 .9H 2 O in one liter of water; immersing a catalyst carrier comprising γ-Al 2 O 3 in said aqueous solution for 20 to 30 minutes; drying the immersed catalyst carrier at 100° to 120° C for 1 to 2 hours; and calcining the dried catalyst carrier at 500° to 600° C for 1 to 2 hours to support a CuO--NiO--Cr 2 O 3 mixture on the catalyst carrier.
Claim 13
Independent Claim
122 words
A method for producing a catalyst for reforming a fuel, comprising the steps of: preparing an aqueous solution containing 0.57 to 0.98 mole of Cu(NO 3 ) 2 .6H 2 O, 0.14 to 0.55 mole of Ni(NO 3 ) 2 .6H 2 O, and 0.34 to 0.79 mole of Cr(NO 3 ) 3 .9H 2 O in one liter of water; immersing a catalyst carrier comprising γ-Al 2 O 3 in said aqueous solution for 20 to 30 minutes; drying the immersed catalyst carrier at 100° to 120° C for 1 to 2 hours; and calcining the dried catalyst carrier at 500° to 600° C for 1 to 2 hours to support a CuO--NiO--Cr 2 O 3 mixture on the catalyst carrier.
Claim 14
Dependent Claim
49 words
A method for producing a catalyst for reforming a fuel as set forth in claim 11, further comprising the step of adding 0.05 to 0.3 mole per liter of water of Si(OC 2 H 5 ) 4 to the aqueous solution prior to the immersion of the catalyst carrier.
Claim 15
Dependent Claim
47 words
A method for producing a catalyst for reforming a fuel as set forth in claim 11, further comprising the step of adding 0.05 to 0.3 mole per liter of water of Ce(NO 3 ) 4 to the aqueous solution prior to the immersion of the catalyst carrier.
Claim 16
Dependent Claim
50 words
A method for producing a catalyst for reforming a fuel as set forth in claim 11, further comprising the step of adding 0.05 to 0.23 mole per liter of water of Sr(NO 3 ) 2 .4H 2 O to the aqueous solution prior to the immersion of the catalyst carrier.
Claim 17
Dependent Claim
50 words
A method for producing a catalyst for reforming a fuel as set forth in claim 11, further comprising the step of adding 0.06 to 0.13 mole per liter of water of La(NO 3 ) 3 .6H 2 O to the aqueous solution prior to the immersion of the catalyst carrier.
Claim 18
Dependent Claim
47 words
A method for producing a catalyst for reforming a fuel as set forth in claim 11, further comprising the step of adding 0.07 to 0.09 mole per liter of water of Ba(NO 3 ) 2 to the aqueous solution prior to the immersion of the catalyst carrier.
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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |