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Zeolite 4A-Incorporated Polymeric Membranes for Pervaporation Separation of Methanol–Methyl Acetate Mixtures

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Abstract

Zeolite 4A-incorporated poly(vinyl alcohol)/poly(vinyl pyrrolidone) (PVA/PVP) membranes were prepared for pervaporation separation of methanol/methyl acetate mixtures. These membranes were characterized by Infrared spectroscopy, X-ray diffraction and Scanning electron microscopy. The results showed that crystallinity of the membrane decreased with the increase of zeolite 4A content. The effect of zeolite loading, feed composition and temperature on the membrane separation performance were discussed in detail. With the increase of zeolite 4A content, permeation flux increased continuously, but separation factor first increased and then decreased. The addition of 2.5 wt% zeolite 4A in the polymer membrane improved the separation factor from 12.9 (for PVA/PVP membrane) to the maximum value of 34.4 for 20 wt% methanol in feed at 45 °C. The separation factor decreased with increasing feed temperature, however, the flux increased with increasing feed temperature. Zeolite 4A-incorporated PVA/PVP membranes provide an effective method for the separation of methanol/methyl acetate azeotropic mixtures.

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Acknowledgments

This study was financially supported by the 973 Fundamental research programm from the ministry of science and technology of China (2010CB635116), Science and technology planning project of zhejiang province (2010C31099) and Natural science foundation of Ningbo university (xkl09072).It was also sponsored by K.C.Wong Magna Fund in Ningbo University.

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  1. Faculty of material Science and Chemical Engineering, Ningbo University, Ningbo, 315211, People’s Republic of China

    Xiao Tong-Hu, Xu Xiao-Li, Qin Hai-Jiao, Ying Xiao-Gang & Zhang Rui-Feng

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  1. Xiao Tong-Hu
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  2. Xu Xiao-Li
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  3. Qin Hai-Jiao
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  4. Ying Xiao-Gang
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  5. Zhang Rui-Feng
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Correspondence to Xiao Tong-Hu.

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Tong-Hu, X., Xiao-Li, X., Hai-Jiao, Q. et al. Zeolite 4A-Incorporated Polymeric Membranes for Pervaporation Separation of Methanol–Methyl Acetate Mixtures. J Inorg Organomet Polym 21, 816–822 (2011). https://doi.org/10.1007/s10904-011-9527-1

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  • DOI: https://doi.org/10.1007/s10904-011-9527-1

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