沸石转晶的研究(Ⅰ)——A型沸石转晶为NaHS型沸石的生成机理

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (5): 609.

沸石转晶的研究(Ⅰ)——A型沸石转晶为NaHS型沸石的生成机理

马淑杰, 徐如人, 赵泽民, 李艳华

吉林大学化学系

收稿日期:1983-04-03 出版日期:1984-10-24 发布日期:1984-10-24

The Mechanism of Transformation of NaA to NaHS Type Zeolite

Ma Shujie, Xu Ruren, Zhao Zheming, Li Yanhua

Department of Chemistry, Jilin University, Changchun

Received:1983-04-03 Online:1984-10-24 Published:1984-10-24

摘要/Abstract

摘要： 用化学分析和三甲基硅烷化-气相色谱(TMS-GC)法研究了3Na₂O·Al₂O₃·2SiO₂·60H₂O凝胶体系由介稳态A型沸石向稳定的NaHS沸石的转晶过程,并用电子显微镜,透射电镜考察了转晶过程液相中晶核的生成及晶型的变化,进一步证实了沸石的液相生成机理.

Abstract: We have investigated the tranformation of NaAto NaHS (sodalite) type zeolite from an initial gel of batch composition 3Na₂O·Al₃O₂·2SiO₂·60H₂O at 100℃. In order to explain the mechanism of this process, we proved the formation of nuclei of NaAand NaHStype zeolite in liquid phase by electron diffraction technique, and we used the electron micrograph, X-ray diffraction, TMS - GC and other methods to investigate comprehensively the changes of partical size and morphology of zeolite, the existing species and their distribution of lower silicate anions in liquid and solid phase in the course of transformation of NaAto NaHS. Aliquid phase transportation mechanism of transformation was suggested.

TrendMD:

马淑杰, 徐如人, 赵泽民, 李艳华. 沸石转晶的研究(Ⅰ)——A型沸石转晶为NaHS型沸石的生成机理. 高等学校化学学报, 1984, 5(5): 609.

Ma Shujie, Xu Ruren, Zhao Zheming, Li Yanhua. The Mechanism of Transformation of NaA to NaHS Type Zeolite. Chem. J. Chinese Universities, 1984, 5(5): 609.