Enhanced Fe–Cr dispersion on mesoporous silica support using surfactant-assisted melt-infiltration for the water-gas shift reaction in waste-to-hydrogen processes

Byung Sun Yoon, Kyoung Jin Kim, Eui Hyun Cho, Ho Ryong Park, Hyun Seog Roh, Chang Hyun Ko

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Iron-chromium/SBA-15 (Fe–Cr/SBA-15) catalysts for high-temperature water-gas shift reactions (HTS) were prepared using the surfactant-assisted melt-infiltration (SAMI) method. The SAMI method was used to synthesize an efficient catalyst that could simultaneously achieve high dispersion and loading (Fe: 40 wt% and Cr/Fe molar ratio: 0.25) without a liquid solution. According to X-ray diffraction (XRD) and transmission electron microscopy analyses, it was observed that the Span60 surfactant enhanced Fe3O4 particle dispersion. N2 adsorption-desorption analysis indicated that the Fe3O4 and chromium oxide particles were thoroughly infiltrated inside the mesopores of the SBA-15 support. XRD and temperature-programmed-reduction analyses revealed that the well-dispersed Fe3O4 acted as active sites for the HTS reaction when Span60 was added to the Fe–Cr catalyst. In other words, the Fe–Cr catalyst synthesized via SAMI exhibited better performance and stability for the HTS reaction than that prepared without the surfactant.

Original languageEnglish
Pages (from-to)24894-24903
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume48
Issue number64
DOIs
Publication statusPublished - 2023 Jul 29

Bibliographical note

Publisher Copyright:
© 2022 Hydrogen Energy Publications LLC

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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