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Promotion of N2O decomposition by Zr4+-doped CeO2 used as support of Rh catalyst
- Authors
- Kim, Min-Jae; Kim, Hye Jeong; Lee, Seung-Jae; Ryu, In-Soo; Yoon, Hyung Chul; Lee, Ki Bong; Jeon, Sang Goo
- Issue Date
- 10월-2019
- Publisher
- ELSEVIER
- Keywords
- N2O decomposition; Rh catalyst; Ce-ZrO2 support; H2O-tolerance in deN(2)O
- Citation
- CATALYSIS COMMUNICATIONS, v.130
- Indexed
- SCIE
SCOPUS
- Journal Title
- CATALYSIS COMMUNICATIONS
- Volume
- 130
- ISSN
- 1566-7367
- Abstract
- A series of Ce1-xZrxO2-supported Rh catalysts was prepared and their catalytic efficiencies for N2O decomposition was determined in the 200-400 degrees 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 O-2 or H2O were present in the feed gas of N2O. H-2 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.
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