Studies on the Polymerization Between High Polymeric Silicate Anions and Mono-Aluminate Anions and the Hydrothermal Crystallization Behaviour

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (10): 1491.

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Studies on the Polymerization Between High Polymeric Silicate Anions and Mono-Aluminate Anions and the Hydrothermal Crystallization Behaviour

LI Shou-Gui, MAO Ya-Chun, XU RU-Ren, TANG Ao-Qing

Key Laboratory of Inorganic Hydrothermal Synthesis, Department of Chemistry, Jilin University, Changchun, 130023

Received:1995-03-02 Revised:1995-04-20 Online:1995-10-24 Published:1995-10-24

Abstract

Abstract: The polymeric state of silicate anions and aluminate anions were studied by means of ²⁷AlNMR, UV-Vis spectra and silicate molybate method. It was found that the state of reaction products is affected by the polymeric state of silicate anions. The reaction between mono-aluminate anions and polymeric silicate anions(polymeric degree> 40)results in the formation of a gel,but during the reaction of mono-aluminate anions with mono- or di-silicate anions a precipitate was formed. The hydrothermal crystallization behaviour was also studied under the same conditions. Zeolites A, X, Yand P were crystallized in the area of precipitate, mixture, gel and sol respectively.

Key words: Aluminosilicate, Gel,Zeolite, Hydrothermic crystallization

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LI Shou-Gui, MAO Ya-Chun, XU RU-Ren, TANG Ao-Qing. Studies on the Polymerization Between High Polymeric Silicate Anions and Mono-Aluminate Anions and the Hydrothermal Crystallization Behaviour[J]. Chem. J. Chinese Universities, 1995, 16(10): 1491.

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Studies on the Polymerization Between High Polymeric Silicate Anions and Mono-Aluminate Anions and the Hydrothermal Crystallization Behaviour

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