4.7 Article

Gas permeation, sorption and diffusion through PEBA/SiO2 nanocomposite membranes (chemical surface modification of nanoparticles)

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 40, Issue 31, Pages 9723-9732

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2015.06.013

Keywords

Nanocomposite membrane; Gas separation; Surface modification; Esterification

Funding

  1. Novel Technology Research Group of Petrochemical Research and Technology Company [870289106]
  2. Iran Nanotechnology Initiative Council

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In the current investigation, separation performance of poly (Ether Block Amid), PEBA (grade 1657), membrane was improved via incorporation of SiO2 nanoparticles into the polymeric matrix. In order to attain excellent dispersion of SiO2 nanoparticles within the polymeric matrix, a chemical surface modification was performed via esterification reaction between the nanoparticles and cis-9-octadecenoic acid (OA). To the best of our knowledge; there is no investigation on employing this type of modification for preparation of SiO2/polymer nanocomposite membranes. Permeation, sorption and diffusion coefficients of pure gases, CO2, H-2, CH4 and N-2, through the prepared neat and the nanocomposite membranes were studied at temperature of (T = 25 degrees C) and pressure of (P = 2 bar). The results showed that, with increasing the loading content of nanoparticles from 0 wt% (the neat PEBA membrane) to 8 wt%, ideal permeation selectivity values of CO2/H-2, CO2/CH4 and CO2/N-2 improve from 9, 18 and 55 to 17, 45 and 124, respectively. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

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