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 language | English |
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Article number | 105764 |
Journal | Catalysis Communications |
Volume | 130 |
DOIs | |
Publication status | Published - 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