US4089941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam reformer process for the production of hydrogen
Assignee: Apc (azote Et Produits Chimiques) Catalysts & Chemicals Europe Ste
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Filing: 1976-10-19
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Granted: 1978-05-16
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Expires: 1996-10-19
Abstract
Abstract An impregnated nickel catalyst for the steam reforming of gaseous hydrocarbons to produce hydrogen, comprising a support containing at least 98% of alumina, having the shape of a cylinder containing at least four partitions located in radial planes and in which the porosity ranges between 0.08 and 0.20 cm3/g, and 4 to 15% of nickel calculated as NiO with respect to the total weight of the catalyst, deposited by impregnation on the support.
Inventors
- 👤 Bernard Villemin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:07
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/30; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J35/00; B01J35/30; B01J35/34; B01J35/36; B01J35/50; B01J35/55; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30223; B01J2219/304; B01J2219/30475; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
In a catalytic steam reformer process comprising reacting in a steam-reforming furnace at 500°-1000° C. a gaseous hydrocarbon with steam at a steam/carbon ratio of 2 to 5, to form hydrogen, the improvement wherein the reaction is conducted in contact with an impregnated nickel catalyst comprising a support containing at least 98% of alumina, having the shape of a cylinder containing at least four partitions located in radial planes and in which the porosity ranges between 0.08 and 0.20 cm 3 /g, and 4 to 15% of nickel calculated as NiO with respect to the total weight of the catalyst, deposited by impregnation on the support.
Claim 2
Dependent Claim
106 words
In a catalytic steam reformer process comprising reacting in a steam-reforming furnace at 500°-1000° C. a gaseous hydrocarbon with steam at a steam/carbon ratio of 2 to 5, to form hydrogen, the improvement wherein the reaction is conducted in contact with an impregnated nickel catalyst comprising a support containing at least 98% of alumina, having the shape of a cylinder containing at least four partitions located in radial planes and in which the porosity ranges between 0.08 and 0.20 cm 3 /g, and 4 to 15% of nickel calculated as NiO with respect to the total weight of the catalyst, deposited by impregnation on the support.
Claim 3
Dependent Claim
21 words
A process according to claim 1, wherein the support contains four to seven partitions located in radial planes at equal angles.
Claim 4
Dependent Claim
20 words
A process according to claim 1, wherein the porosity of the support ranges between 0.12 and 0.15 cm 3 /g.
Claim 5
Dependent Claim
31 words
A process according to claim 1, wherein the quantity of nickel deposited by impregnation ranges between 8 and 12%, calculated as NiO with respect to the total weight of the catalyst.
Claim 6
Dependent Claim
61 words
A process according to claim 1, wherein the support contains four partitions located in radial planes, the porosity of the support is 0.12 - 0.15 cm 3 /g, the quantity of nickel deposited by impregnation is 8-12% calculated as NiO with respect to the total weight of the catalyst, and both the diameter and height of the catalyst is 10-20 mm.
Claim 7
Dependent Claim
12 words
A process according to claim 1, wherein said gaseous hydrocarbon is methane.
Claim 8
Dependent Claim
39 words
A process according to claim 1, wherein the catalyst is regenerated with steam at intervals during the reaction, and the activity of the catalyst remains substantially constant after a prolonged reaction time and after several regenerations of the catalyst.
Claim 9
Dependent Claim
12 words
A process according to claim 7, wherein said gaseous hydrocarbon is methane.
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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |