Analysis and Simulation of Phase Transformation Kinetics of Zeolite A from Amorphous Phases

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiroshi Takiyama¹  Hirohisa Uchida¹  Yukiko Marui¹  Masakuni Matsuoka¹ 

[1] Department of Chemical Engineering, Tokyo University of Agriculture and Technology

关键词: Zeolite A;    Crystallization Kinetics;    Heterogeneous Nucleation;    Solution Mediated Transformation;    Simulation;   

DOI  :  10.1252/jcej.36.616

来源: Maruzen Company Ltd

【 摘 要 】

References(15)Cited-By(1)Experiments on transformation rates of zeolite A from amorphous phases at different feed rates to alter the particle size of the amorphous phases were carried out to analyze the kinetics of the transformation, and were analyzed by performing simulation of the transformation. A clear dependence of the induction time for nucleation of zeolite A crystals on the surface area of the amorphous phase was recognized, indicating that the nucleation of zeolite A was heterogeneous and the nucleation rate was almost proportional to the size of the amorphous particles. From the simulation, the mechanism of the transformation was found to be heterogeneous nucleation of zeolite A crystals on the surface of amorphous particles followed by solution mediated phase transformation, and the transformation kinetics were well reproduced at different feed rates.

【 授权许可】

Unknown