Promotion of N2O decomposition by Zr4+-doped CeO2 used as support of Rh catalyst

Min Jae Kim, Hye Jeong Kim, Seung Jae Lee, In Soo Ryu, Hyung Chul Yoon, Ki Bong Lee, Sang Goo Jeon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A series of Ce1-xZrxO2 -supported Rh catalysts was prepared and their catalytic efficiencies for N2O decomposition was determined in the 200–400 °C range. The activity of this catalytic system was found to be largely influenced by the Ce:Zr weight ratio. The Rh/Ce-ZrO2 catalyst with a small amount of ZrO2 showed a significantly improved activity performance than the Rh/CeO2 catalyst, particularly when O2 or H2O were present in the feed gas of N2O. H2 temperature-programmed reduction and X-ray photoelectron spectroscopy studies showed that the incorporation of Zr4+ in the CeO2 lattice used as support of Rh catalyst improved Rh dispersion and redox ability, and stabilized Rh3+ species on the catalyst surface.

Original languageEnglish
Article number105764
JournalCatalysis Communications
Volume130
DOIs
Publication statusPublished - 2019 Oct

Keywords

  • Ce–ZrO support
  • HO-tolerance in deNO
  • NO decomposition
  • Rh catalyst

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Process Chemistry and Technology

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