Development of ion-exchange membranes for the membrane bunsen reaction in thermochemical hydrogen production by iodine-sulfur process

Mikihiro Nomura, Takehide Kodaira, Ayumi Ikeda, Yasuhito Naka, Haruyuki Nishijima, Shinichiro Imabayashi, Shin Ichi Sawada, Tetsuya Yamaki, Nobuyuki Tanaka, Shinji Kubo

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Thermochemical H2 production by the iodine-sulfur process decomposes H2O into H2 and O2 by combining the chemical reactions of iodine and sulfur. To boost the performance of this reaction, ion-exchange membranes for the membrane Bunsen reaction was developed. A cation-exchange membrane was prepared using a radiation-graft polymerization method. A divinylbenzene crosslinking procedure was very effective in reducing water permeation through the membrane, and the membrane Bunsen reaction was successfully performed using the developed crosslinked membrane. The crosslinked membrane showed a lower electro-osmotic coefficient with the same over potential as the Nafion membrane. Additionally, sulfur deposition during the membrane Bunsen reaction was low for the crosslinked membrane.

Original languageEnglish
Pages (from-to)726-731
Number of pages6
JournalJournal of Chemical Engineering of Japan
Issue number9
Publication statusPublished - 2018 Jan 1



  • Bunsen Reaction
  • Cation-Exchange Membrane
  • Crosslinking
  • Radiation-Graft Polymerization
  • Thermochemical Hydrogen Production Iodine-Sulfur Process

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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