Method of manufacturing carbonaceous granular molecular sieve

Details Method of manufacturing carbonaceous granular molecular sieve Method of manufacturing carbonaceous granular molecular sieve

1975-03-24

1977-09-06

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252444, 252445, 423445, 423449, 264 293, B01J 3700, B01J 2118, C01B 3100

Patent

active

040467090

ABSTRACT:
Granular molecular sieve may be obtained, without necessitating any activng treatment, by subjecting a vinylidene chloride copolymer to a thermal carbonization treatment for removal of hydrochloric acid, pulverizing the resultant product to a grain size smaller than 100 mesh size, adding 15 to 35 parts by weight of a carbonaceous sintering agent and 8 to 15 parts by weight of an organic pelletizer capable of gas generation by heating to 100 parts by weight of the pulverized product, pelletizing the resultant mixture and carbonizing the resultant pellets at a temperature of 400 to 900.degree. C for a period of 2 to 6 hours. The pore diameter of this molecular sieve can be suitably controlled within a range of from 5 to 10 A by appropriately selecting the sintering agent and pelletizer employed and the conditions of the thermal treatment.

REFERENCES:
patent: 2008145 (1935-07-01), Morrell
patent: 2648637 (1953-08-01), Rodman, Jr.
patent: 2934417 (1976-01-01), Wolfe et al.
patent: 2944031 (1960-07-01), Mason
patent: 3258363 (1966-06-01), Lieb
patent: 3395094 (1968-07-01), Weisz
patent: 3852429 (1974-12-01), Murayama et al.
patent: 3891574 (1975-06-01), Kobayashi et al.
patent: 3960768 (1976-06-01), Ripperger et al.

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