Insight into the potential application of CuOx/CeO2 catalysts for NO removal by CO: a perspective from the morphology and crystal-plane of CeO2†
Xu
Wu 
*b
and
*b
and
Abstract
A series of copper oxide catalysts supported on cerium oxide particles with different morphologies (CuOx/CeO2-X) were fabricated and the catalytic performance (NO conversion, N2 selectivity, and O2/H2O/SO2 resistance) was evaluated in the NO + CO reaction. The results indicate that the catalytic performance is obviously impacted by the morphology and the crystal-plane of CeO2, where CuOx/CeO2-H exhibits 90% NO conversion at 215 °C, above 90% N2 selectivity at 185 °C and strong O2/H2O/SO2 resistance. Characterization analysis reveals that the excellent performance of the CuOx/CeO2-H catalyst originates from the surrounding (100) and (111) planes, which provides an optimal coordination environment of Cu2+ ions and enriches the active sites.
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