US3839223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam reforming gaseous hydrocarbons
Assignee: BASF SE
•
Filing: 1971-02-23
•
Granted: 1974-10-01
•
Expires: 1991-02-23
Abstract
Abstract A process for cracking hydrocarbons with steam in the presence of specially prepared nickel catalysts. These catalysts contain substantially finely particled Alpha -aluminum oxide as a support with small additions of activators and are formulates with binders devoid of silicic acid, such as aluminous cement.
Inventors
- 👤 W Schwab
- 👤 W Schropp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:37
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B01J37/00; B01J37/02; B01J37/0201; 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
123 words
IN A PROCESS FOR THE STEAM REFORMING OF GASEOUS HYDROCARBONS WHICH COMPRISES PASSING A GASEOUS HYDROCARBON AND STEAM IN A RATIO OF 1-5 MOLS OF STEAM PER GRAM ATOM OF CARBON IN SAID HYDROCARBON OVER A NICKEL CATALYST CONTAINING ALUMINOUS CEMENT AS BINDER AT TEMPERATURES OF MORE THAN 500*C. AND PRESSURE OF UP TO 50 ATMOSPHERES, THE IMPROVEMENT BEING WHEREIN SAID CATALYST CONSISTS ESSENTIALLY OF 12 TO 30 PERCENT BY WEIGHT OF NICKEL, 15-35 PERCENT BY WEIGHT OF A FINELY PARTICLED A-ALUMINUM OXIDE AS CARRIER, 3 TO 15 PERCENT BY WEIGHT OF BOEHMITE, HYDRARGILLITE OR Y-ALUMINUM OXIDE (CALCULATED AS AI2O3) AS ACTIVATOR AND 25 TO 40 PERCENT BY WEIGHT OF ALUMINOUS CEMENT, SAID PERCENTAGES BEING BASED ON THE TOTAL WEIGHT OF THE CATLYST.
Claim 2
Dependent Claim
123 words
IN A PROCESS FOR THE STEAM REFORMING OF GASEOUS HYDROCARBONS WHICH COMPRISES PASSING A GASEOUS HYDROCARBON AND STEAM IN A RATIO OF 1-5 MOLS OF STEAM PER GRAM ATOM OF CARBON IN SAID HYDROCARBON OVER A NICKEL CATALYST CONTAINING ALUMINOUS CEMENT AS BINDER AT TEMPERATURES OF MORE THAN 500*C. AND PRESSURE OF UP TO 50 ATMOSPHERES, THE IMPROVEMENT BEING WHEREIN SAID CATALYST CONSISTS ESSENTIALLY OF 12 TO 30 PERCENT BY WEIGHT OF NICKEL, 15-35 PERCENT BY WEIGHT OF A FINELY PARTICLED A-ALUMINUM OXIDE AS CARRIER, 3 TO 15 PERCENT BY WEIGHT OF BOEHMITE, HYDRARGILLITE OR Y-ALUMINUM OXIDE (CALCULATED AS AI2O3) AS ACTIVATOR AND 25 TO 40 PERCENT BY WEIGHT OF ALUMINOUS CEMENT, SAID PERCENTAGES BEING BASED ON THE TOTAL WEIGHT OF THE CATLYST.
Claim 3
Dependent Claim
33 words
A process as claimed in claim 1 wherein the major portion of Alpha -aluminum oxide has a particle size of from 40 to 200 microns and is composed of granules of different sizes.
Claim 4
Dependent Claim
26 words
A process as claimed in claim 1 wherein the catalyst is soaked in water for 30 minutes and stored for at least 8 days while moist.
Claim 5
Dependent Claim
22 words
A process as claimed in claim 1 wherein the nickel content of the catalyst is from 15 to 20 percent by weight.
Claim 6
Dependent Claim
26 words
A process as claimed in claim 1 wherein the amount of aluminum oxide used as activator is 30 percent by weight of the amount of nickel.
Claim 7
Dependent Claim
28 words
A process as claimed in claim 1 wherein said gaseous hydrocarbon is a C1 to C4 hydrocarbon, and said temperature is in the range of 500* to 900*C.
Claim 8
Dependent Claim
24 words
A process as claimed in claim 1 wherein said gaseous hydrocarbon is methane, and said temperature is in the range of 500* to 900*C.
Claim 9
Dependent Claim
78 words
A process as claimed in claim 1 wherein the required amount of nickel is applied to the carrier and activator by suspending said carrier and said activator in an aqueous solution of a water soluble nickel salt, vigoRously stirring the suspension, adding sodium carbonate solution and precipitating basic nickel carbonate, filtering the resultant composition, washing the filter residue until it is free from alkali, drying the washed residue, and roasting the dried residue to decompose the nickel carbonate.
References Cited (Backward Citations)
CA791623A
Cited
GB820257A
Cited
US3271325A
Cited
US3567411A
Cited
GB1099454A
Cited
US3340012A
Cited
US3379499A
Cited
US3342751A
Cited
US3359215A
Cited
US3394086A
Cited
US3445402A
Cited
US3363988A
Cited
FR1492926A
Cited
FR1559218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |