Adsorption and catalytic decomposition of dimethyl sulfide on H-BEA zeolite

Kazumasa Oshima, Rina Kadonaga, Munehiro Shiba, Minoru Sohmiya, Shigeo Satokawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Catalytic direct decomposition of dimethyl sulfide (DMS) was performed using solid acid catalysts to develop an on-site hydrogen-free desulfurization system for utilization in small systems, such as fuel cells. DMS was decomposed to CH3SH and H2S at 500 °C on SiO2–Al2O3 and various zeolite catalysts. Among the catalysts, H-BEA zeolite with Si/Al = 18.5 (H-BEA-18.5) showed the highest performance for DMS decomposition at 500 °C. While the catalytic activity at 500 °C maintained a DMS conversion of greater than 30% for up to 114 h, a large amount of carbon deposition caused gradual deterioration. At a low temperature of 400 °C, DMS decomposition to CH3SH on H-BEA-18.5 continued for 100 h with a stable conversion of approximately 30%, although the adsorption of DMS on the catalyst surface was also confirmed. To achieve a high performance for the DMS decomposition, high temperatures were required to avoid the adsorption of sulfur species.

Original languageEnglish
Pages (from-to)27644-27652
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume45
Issue number51
DOIs
Publication statusPublished - Oct 16 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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