Effect of potassium on the formation of zeolite A from allophane

被引：1

作者：

Matsumoto, T ^{[1
]}

Iso, F ^{[1
]}

Goto, Y ^{[1
]}

机构：

[1] RYUKOKU UNIV, FAC SCI & TECHNOL, DEPT CHEM MAT, OTSU, SHIGA 52021, JAPAN

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 1996年 / 104卷 / 09期

关键词：

zeolite A; allophane; synthesis; crystal growth;

D O I：

10.2109/jcersj.104.854

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Zeolite A was synthesized at 80 degrees C from allophane in NaOH-KOH mixed solution. Single phase of zeolite A was obtained from mixed solutions with Na/Na+R molar ratios larger than 0.8. In the range between 0.6 and 0.8 for mole fraction of Na, chabazite type zeolite (K-G) and linde F (K-F) coexisted with zeolite A. Zeolite A did not form from mixed solutions with the mole fraction of Na less than 0.6. The rate of formation of zeolite A decreased with decreasing mole fraction of Na, which was explained by the decreases in nucleation rate and liner crystal growth rate. The crystal size of zeolite A increased with an increase in the K content in the mixed solutions.

引用

页码：854 / 857

页数：4

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