B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/12
B01J 29/04 (2006.01) B01J 29/18 (2006.01) B01J 29/40 (2006.01) B01J 29/80 (2006.01) C07C 1/20 (2006.01)
Patent
CA 1136112
Case 472? ABSTRACT OF THE DISCLOSURE Method for producing aluminosilicates their use as catalysts and catalytic compositions containing them Crystalline aluminosilicates containing an organic nitrogen cation are prepared by mixing a source of silica, a source of alumina, a source of alkali metal, water and one or more substituted neopentyl- amines having the formula:- Image wherein R2 is H, OH or NH2 and R1 is a C1 to C6 alkyl group, and maintaining the mixture under conditions of elevated temperature and pressure, typically in the range from 80 to 210°C and 70 to 400 psig, for a time sufficient to effect formation of the aluminosilicate, typically not less than 4 hours. The molar ratio of silica to alumina in the initial mixture is suitably in the range from 10:1 to 150:1 and the amounts of alkali metal and neopentylamine are suitably in the range from 50 to 0.02 moles per mole equivalent of total silica and alumina in the respective sources. Depending on the ratio of silica to alumina in the initial mixture crystalline aluminosilicates having a mordenite structure or a ZSM-5 type zeolite structure or mixtures thereof may be prepared. Mordenites having a silica to alumina ratio greater than 10:1 and an alkali metal content less than 0.15% by weight can be prepared directly by crystallisation without any post- crystallisation treatment.
341271
Ball William J.
Stewart David G.
British Petroleum Company Limited (the)
Fetherstonhaugh & Co.
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