Partially calcined carbonaceous material as a reductant

Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Free carbon containing

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502432, 423460, 44 1F, B01J 2020, C01B 3108

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active

045297177

ABSTRACT:
An improved solid carbon reductant comprising partially calcined carbonaceous materials such as petroleum coke, containing relatively low amounts of residual hydrocarbons and a relatively high surface area and thus increased activity as compared to known reductants is provided. This improved reductant is produced by a method comprising heating the carbonaceous material in an oxidizing atmosphere to a temperature of from about 650.degree. C. to about 950.degree. C., preferably from about 800.degree. C. to about 875.degree. C., and most preferably at a temperature about 850.degree. C. In addition, according to the present invention improved chlorination processes are provided using these reductants which result in reduced levels of chlorinated hydrocarbon (C.sub.x Cl.sub.y) production due to reduced residual hydrocarbons. In a preferred embodiment anhydrous aluminum chloride is produced by chlorination of aluminum hexahydrate using the improved reductant.

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patent: 3322550 (1967-05-01), Murphy
patent: 3950503 (1976-04-01), Spars
patent: 4154704 (1979-05-01), Vinton et al.
patent: 4182747 (1980-01-01), Gravey et al.
patent: 4284607 (1981-08-01), Culleiton et al.

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