Development of voc permselective membranes by using an organic-inorganic hybrid gel

Ayumi Ikeda, Yukiko Tokunaga, Jun Ya Sasanoma, Emi Matsuyama, Naofumi Naga, Mikihiro Nomura

Research output: Contribution to journalArticlepeer-review


An organic-inorganic hybrid gel having a joint-rod structure was prepared by using the Ashby-Karstedt catalyst. 1,3,5,7-tetramethylcyclohexane is one of siloxane compounds that was employed as a joint molecule. 1, 5-Hexadiene is one of a, (uncoupling dienes that was employed as a rod molecule. Porous y-alumina substrates having pores of 4nm were coated with this gel to obtain toluene permselective membranes. Toluene is one of VOC components. Toluene/N2 permeance ratio was 850 with toluene permeance of 1.55X 10~6molm~2s"'Pa~'. The permeation through this gel membrane is discussed using a novel permeation model. The permeation model consists of two permeation pathways. One is permeation through the thin gel layer, and the other is that through the gap between the gel clusters. Optimum membrane structures can be found through a novel transmission mechanism and by variation of the model parameters.

Original languageEnglish
Pages (from-to)242-248
Number of pages7
JournalKobunshi Ronbunshu
Issue number5
Publication statusPublished - 2014 May


  • Organic-Inorganic Hybrid Gel
  • Porous y-Alumina Substrate
  • Toluene Permselective Membrane

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • General Environmental Science
  • Polymers and Plastics


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