PREPARATION OF HIGH-SILICA FAUJASITES BY MEANS OF SiCl4.

被引：0
|
作者：
Mishin, I.V. [1 ]
Baier, G.K. [1 ]
Klyachko, A.L. [1 ]
Ashavskaya, G.A. [1 ]
Nissenbaum, V.D. [1 ]
Borbei, G. [1 ]
机构：
[1] Acad of Sciences of the USSR, Moscow, USSR, Acad of Sciences of the USSR, Moscow, USSR
来源：
Kinetics and Catalysis | 1987年 / 28卷 / 3 pt 2期
关键词：
ALUMINUM AND ALLOYS - Removal - CRYSTALS - Structure - SILICON COMPOUNDS - VAPORS;
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摘要：
The reaction of Y zeolites with SiCl//4 vapor has been studied. A connection has been established between the temperature at which the zeolites are treated with SiCl//4 and the degree of dealumination. It has been shown that up to 95% of the Al can be extracted from the framework by means of SiCl//4 without destroying the crystal structure. Dealumination increases the thermal stability of the framework and the hydroxyl coating of Y zeolites. On reacting with SiCl//4 some of the Al removed from the framework remains in the specimen and forms stable extra-lattice compounds.
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页码：615 / 620
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