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Chemcial Industry and Engineering 2016, Vol. 33 Issue (4) :38-41,48    DOI: 10.13353/j.issn.1004.9533.20141098
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Synthesis of Al-Beta Zeolite Membranes with an Improved Method in Fluoride Media
Chen Tao, Liu Xiufeng, Zhang Baoquan
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract 

An improved two-step method was introduced to prepare zeolite beta membranes, by which the seeding layer was firstly spin-coated on α-Al2O3 support and then it was crystallization in synthesis gel without fluoride and flowed with fluoride at 140℃ for 7 days successively. The beta zeolite membrane with thickness of about 3 μm is smooth and continuous, prefering to (h0l) orientation, covering the support completely and grasping the support firmly. After removing the organic template under 450℃, the quality of the membranes was evaluated by means of pervaporation tests. The experiments suggested that the membranes almost had no defects.

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Chen Tao
Liu Xiufeng
Zhang Baoquan
Keywordsbeta zeolite membrane;   pervaporation;   two-step method     
Received 2014-04-29;
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Chen Tao, Liu Xiufeng, Zhang Baoquan.Synthesis of Al-Beta Zeolite Membranes with an Improved Method in Fluoride Media[J]  Chemcial Industry and Engineering, 2016,V33(4): 38-41,48
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