Comparison of experimental and simulation results on catalytic HI decomposition in a silica-based ceramic membrane reactor

Odtsetseg Myagmarjav, Nobuyuki Tanaka, Mikihiro Nomura, Shinji Kubo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this study, the catalytic decomposition of hydrogen iodide was theoretically and experimentally investigated in a silica-based ceramic membrane reactor to assess the reactor's suitability for thermochemical hydrogen production. The silica membranes were fabricated by depositing a thin silica layer onto the surface of porous alumina ceramic support tubes via counter-diffusion chemical vapor deposition of hexyltrimethoxysilane. The performance of the silica-based ceramic membrane reactor was evaluated by exploring important operating parameters such as the flow rates of the hydrogen iodide feed and the nitrogen sweep gas. The influence of the flow rates on the hydrogen iodide decomposition conversion was investigated in the lower range of the investigated feed flow rates and in the higher range of the sweep-gas flow rates. The experimental data agreed with the simulation results reasonably well, and both highlighted the possibility of achieving a conversion greater than 0.70 at decomposition temperature of 400 °C. Therefore, the developed silica-based ceramic membrane reactor could enhance the total thermal efficiency of the thermochemical process.

Original languageEnglish
Pages (from-to)30832-30839
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number59
DOIs
Publication statusPublished - 2019 Nov 29

Keywords

  • Hydrogen extraction
  • Hydrogen production
  • Membrane reactor
  • Silica membrane
  • Thermochemical cycle

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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