US4091086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of hydrogen
Assignee: Engelhard Minerals and Chemicals Corp
•
Filing: 1976-12-20
•
Granted: 1978-05-23
•
Expires: 1996-12-20
Abstract
Abstract Catalytic compositions particularly useful in the production of hydrogen from methanol, especially by steam reforming, which comprises a mixture of zinc oxide, copper oxide, thorium oxide and aluminum oxide whereby the activity and activity maintenance of the catalytic composition is superior relative to a composition otherwise substantially the same but lacking thoria.
Inventors
- 👤 Saul G. Hindin
- 👤 Joseph C. Dettling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:16
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/22; C01B3/32; C01B3/34; C01B3/38; C01B3/40; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1076; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
A process for producing hydrogen from methanol wherein a feedstock comprising methanol and steam is passed over a catalytic composition consisting essentially of zinc oxide, copper oxide, thorium oxide and aluminum oxide at a temperature in the range of from about 300° F to about 800° F and a pressure of from about 20 to 100 psig, whereby the activity maintenance of the composition for said process is superior relative to a composition substantially the same but lacking thoria.
Claim 2
Dependent Claim
79 words
A process for producing hydrogen from methanol wherein a feedstock comprising methanol and steam is passed over a catalytic composition consisting essentially of zinc oxide, copper oxide, thorium oxide and aluminum oxide at a temperature in the range of from about 300° F to about 800° F and a pressure of from about 20 to 100 psig, whereby the activity maintenance of the composition for said process is superior relative to a composition substantially the same but lacking thoria.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein said thoria is present in the range of from about 0.5% to about 10% by weight of the catalytic composition.
Claim 4
Dependent Claim
26 words
The process of claim 1 wherein said thoria is present in the range of from about 1% to about 5% by weight of the catalytic composition.
Claim 5
Dependent Claim
26 words
The process of claim 1 wherein said aluminum is present in the range of from about 25% to about 60% by weight of the catalytic composition.
Claim 6
Dependent Claim
30 words
The process of claim 1 wherein the weight ratio of zinc oxide to copper oxide in said catalytic composition is in the range of from about 1:2 to about 3:1.
Claim 7
Dependent Claim
73 words
A process for producing hydrogen from a gaseous mixture containing at least steam and carbon monoxide which comprises contacting said gaseous mixture with a catalytic composition consisting essentially of zinc oxide, copper oxide, thoria and alumina at a temperature in the range of from about 300° F to about 800° F, whereby the activity maintenance of the composition for said process is superior relative to a composition substantially the same but lacking thoria.
Claim 8
Dependent Claim
73 words
A process for producing hydrogen from a gaseous mixture containing at least steam and carbon monoxide which comprises contacting said gaseous mixture with a catalytic composition consisting essentially of zinc oxide, copper oxide, thoria and alumina at a temperature in the range of from about 300° F to about 800° F, whereby the activity maintenance of the composition for said process is superior relative to a composition substantially the same but lacking thoria.
Claim 9
Dependent Claim
26 words
The process of claim 6 wherein said thoria is present in the range of from about 0.5% to about 10% by weight of the catalytic composition.
Claim 10
Dependent Claim
26 words
The process of claim 6 wherein said thoria is present in the range of from about 1% to about 5% by weight of the catalytic composition.
Claim 11
Dependent Claim
26 words
The process of claim 6 wherein said alumina is present in the range of from about 25% to about 60% by weight of the catalytic composition.
References Cited (Backward Citations)
US2279198A
Cited
US2425625A
Cited
GB1010574A
Cited
US3961037A
Cited
US3388972A
Cited
US3546140A
Cited
US3615166A
Cited
US3894140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |