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Microwave Synthesis of NaA zeolite membrane of kaolin and its performance and characterization

Authors： HU Qiuwei，ZHOU Zhihui，XIANG Xiaodong

Units： Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan 430081, China

KeyWords： Kaolin; NaA zeolite membrane; Microwave synthesis

ClassificationCode：TD985

year,volume(issue):pagination： 2012,32(3):34-38

Abstract：

This paper focuses on the microwave synthesis of NaA zeolite membrane of kaolin and its performance. The effect of the aluminum source, crystallization time and other aspects on the microwave synthesis of NaA zeolite membrane of kaolin was studied, and the performance of hydrothermal synthesis of NaA membrane and the microwave synthesis of NaA membrane was compared. Experimental results showed that the kaolin as raw materials of the NaA membrane compounds by microwave synthesis, the separation factor of pervaporation dehydration of ethanol is more than 10,000; Crystallization time of kaolin as raw materials in the microwave synthesis of NaA membrane was 15 min, 20 min and 25 min, respectively; the pervaporation flux from the 2.44 kg•m-2•h-1 decreased to 0.92 kg•m-2•h-1, and the separation factor increased from 2945 to 11846. When the crystallization time was 20 min, the separation factor and permeation flux were 10359 and 1.13 kg•m-2•h-1, respectively; At the same time，under the same formulation conditions, the reaction time for hydrothermal synthesis of NaA membrane and microwave synthesis of NaA membrane reduced from 20 min to 4h, and the separation factor increased from 5231 to 10360.

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AuthorIntro：

胡秋玮(1985- )，女，湖北武汉，武汉科技大学研究生，主要学习方向为无机膜制备和烟气脱硫脱硝的研究。通讯作者：周志辉(1980- )，男，湖北武汉，武汉科技大学副教授，主要研究方向为无机膜的制备及应用。

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