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Silicalite/poly(dimethylsiloxane) nanocomposite pervaporation membranes for acetic acid/water separation

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Abstract

Composite separation membranes of poly(dimethylsiloxane) (PDMS) containing well-dispersed silicalite particles of 50 nm were successfully prepared and applied to the preferential pervaporation of acetic acid over water. The nanocomposite membranes showed improvement on both separation factor and permeation flux for the pervaporation process, as compared to plain PDMS membranes and composite membranes containing silicalite particles of 5 μm. The improvement can be attributed to higher readily accessible specific surface area and higher sorption selectivity toward acetic acid of the nano-size silicalite particles. Improvement on membrane thermal stability was also acquired through incorporation of nano-size silicalite particles.

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Authors and Affiliations

  1. Department of Chemical Engineering, National Tsing-Hua University, 30043, Hsin-Chu, Taiwan, Republic of China

    Shih-Yuan Lu, Hsiang-Yuan Huang & Kwen-Hua Wu

Authors
  1. Shih-Yuan Lu
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  2. Hsiang-Yuan Huang
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  3. Kwen-Hua Wu
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Correspondence to Shih-Yuan Lu.

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Lu, SY., Huang, HY. & Wu, KH. Silicalite/poly(dimethylsiloxane) nanocomposite pervaporation membranes for acetic acid/water separation. Journal of Materials Research 16, 3053–3059 (2001). https://doi.org/10.1557/JMR.2001.0422

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  • DOI: https://doi.org/10.1557/JMR.2001.0422

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