| 摘要： |
The Cu-doped Ce0.8Zr0.2O2 (CZ) catalyst was investigated in terms of its NO oxidation activity, structure and surface characteristics. The Cu/CZ catalyst with 6 wt% Cu loading and 550 degrees C calcination temperature of CZ support showed the best catalytic performance, and over 50% NO conversion was obtained in a wide temperature range (250-370 degrees C). Moreover, this catalyst showed good resistance to H2O and SO 2. The dispersion of CuO species on the smaller crystallite size CZ support was favorable for NO adsorption. The Cu-Ce-Zr solid solution provided the sites of oxygen vacancies, prompted the formation of active oxygen, which in sum improved the oxidation activity of NO. (C) 2016 Elsevier B.V. All rights reserved. |
