Enhanced CO<sub>2</sub> separation performance for tertiary amine‐silica membranes via thermally induced local liberation of CH<sub>3</sub>Cl

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  • Liang Yu
    Dept. of Chemical Engineering Hiroshima University, 1‐4‐1 Kagamiyama Higashihiroshima 739‐8527 Japan
  • Masakoto Kanezashi
    Dept. of Chemical Engineering Hiroshima University, 1‐4‐1 Kagamiyama Higashihiroshima 739‐8527 Japan
  • Hiroki Nagasawa
    Dept. of Chemical Engineering Hiroshima University, 1‐4‐1 Kagamiyama Higashihiroshima 739‐8527 Japan
  • Norihiro Moriyama
    Dept. of Chemical Engineering Hiroshima University, 1‐4‐1 Kagamiyama Higashihiroshima 739‐8527 Japan
  • Toshinori Tsuru
    Dept. of Chemical Engineering Hiroshima University, 1‐4‐1 Kagamiyama Higashihiroshima 739‐8527 Japan
  • Kenji Ito
    National Metrology Institute of Japan (NMIJ) National Institute of Advanced Industrial Science and Technology (AIST), 1‐1‐1 Higashi Tsukuba 305‐8565 Japan

書誌事項

公開日
2017-12-07
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/aic.16040
公開者
Wiley

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説明

<jats:p>A facile method for the fabrication of amine‐silica membranes with enhanced CO<jats:sub>2</jats:sub> separation performance was proposed via the thermally induced liberation of small molecules from quaternary ammonium salt. Quaternary ammonium‐silica (QA‐SiO<jats:sub>1.5</jats:sub>) xerogel powders/films were fabricated via sol‐gel processing and their thermal stability was systematically studied using thermogravimetric mass spectrometer, Fourier transform infrared, energy dispersive spectroscopy, and positron annihilation lifetime spectroscopy analysis. CO<jats:sub>2</jats:sub> sorption performances of QA‐SiO<jats:sub>1.5</jats:sub> derived xerogel powders were quantitatively compared after assigning their relevant parameters to a dual‐mode sorption model. The gas permeation performances of membranes derived from QA‐SiO<jats:sub>1.5</jats:sub> were evaluated in terms of kinetic diameter and temperature dependence of gas permeance, and activation energy (E<jats:sub>p</jats:sub>) required for gas permeation. The results indicate that liberation of the CH<jats:sub>3</jats:sub>Cl molecules from these membranes significantly improved both CO<jats:sub>2</jats:sub> permeation and CO<jats:sub>2</jats:sub>/N<jats:sub>2</jats:sub> separation capabilities. Therefore, the present study provides insight that should be useful in the development of high‐performance CO<jats:sub>2</jats:sub> separation membranes via the effect of the thermally induced liberation of small molecules. © 2017 American Institute of Chemical Engineers <jats:italic>AIChE J</jats:italic>, 64: 1528–1539, 2018</jats:p>

収録刊行物

  • AIChE Journal

    AIChE Journal 64 (5), 1528-1539, 2017-12-07

    Wiley

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