Synthesis and Characterization of Hydroxyaluminosilicate Cross-Linked Montmorillonites with High Basal Spacings

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (3): 295.

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Synthesis and Characterization of Hydroxyaluminosilicate Cross-Linked Montmorillonites with High Basal Spacings

ZHAO Dong-yuan¹, WANG Gou-jia¹, YANG Ya-shu², GUO Xie-xian²

1. Department of Chemistry, Jilin University, Changchun, 130023;
2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian

Received:1991-10-24 Online:1992-03-24 Published:1992-03-24

Abstract

Abstract: A series of hydroxyaluminosilicate cross-linked montmorillonites (Al-Si-CLM) with high basal spacing(2.6 nm) were prepared by the method of collosol dispersed for the first time.The pillaring structuer, thermal stability and surface acidity of the pillared clays were studied by ²⁷Al NMR.XRD, DTA, IR, XPS, TPD.The results show that the thermal stability of the pillared clays was not changed by doping silicate, and the surface acidity, especially the Brönsted acid, was greatly increased.The cracking of cumene was carried out in a pulse reaction system at 400℃ over the pillared clays.Doping silicate increased cracking activity of cumene.

Key words: Cross-linked, Montmorillonite, Pillared clay, Synthesis, Characterization

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ZHAO Dong-yuan, WANG Gou-jia, YANG Ya-shu, GUO Xie-xian. Synthesis and Characterization of Hydroxyaluminosilicate Cross-Linked Montmorillonites with High Basal Spacings[J]. Chem. J. Chinese Universities, 1992, 13(3): 295.

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Synthesis and Characterization of Hydroxyaluminosilicate Cross-Linked Montmorillonites with High Basal Spacings

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