Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Patent
1981-09-23
1984-02-07
Meros, Edward J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
502527, B01J 2906
Patent
active
044302541
ABSTRACT:
A spherical cerium-activated catalyst for the NH.sub.3 synthesis is prepared by: mixing magnetite with (by weight): 2-3.5% of aluminium oxide, 0.8-2% potassium hydroxide, 2-3.5% calcium oxide, 0.1-0.4% magnesium oxide and 0.2-0.5% silica; melting this mixture in a furnace at a temperature of at least 1600.degree. C.; air-cooling the molten mass, removing melted slag; crushing the deslagged mass in a crusher and pulverizing it in a rod-mill; adding in a mixer to the so obtained powder a cerium nitrate solution in quantities to obtain in the final catalyst a metallic cerium concentration of 0.5 to 2.5%; pelletising the so added powder in a tray pelletiser to obtain a sphere shaped catalyst; drying said catalytic spheres in a furnace at 100.degree.-200.degree. C., and sintering them in an argon atmosphere at a temperature of 1250.degree.-1350.degree. C.
REFERENCES:
patent: 3951862 (1976-04-01), Sze
patent: 3992328 (1976-11-01), Sze et al.
patent: 4073749 (1978-02-01), Passariello
patent: 4308174 (1981-12-01), Passariello
Ammonia Casale S.A.
Langel Wayne A.
Meros Edward J.
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