NUCLEAR-MAGNETIC-RESONANCE STUDIES OF THE SYNTHESIS OF SILICALITE BY THE FLUORIDE METHOD

被引:13
|
作者
AXON, SA
KLINOWSKI, J
机构
来源
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 23期
关键词
D O I
10.1039/ft9938904245
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The composition of the mother liquor in the course of synthesis of silicalite by the fluoride method has been monitored by C-13, F-19 and Si-29 NMR and by atomic absorption spectrometry. The Si content never exceeds 5% of the total Si content. Several distinct fluorosilicate species apart from SiF62- coexist in a complex dynamic equilibrium in the solution. The results indicate that synthesis proceeds via the type B solid-solid transformation mechanism, and we describe the successive reaction steps.
引用
收藏
页码:4245 / 4248
页数:4
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