화학공학소재연구정보센터
Journal of Molecular Catalysis A-Chemical, Vol.396, 8-14, 2015
Pt-Ru/Ba/Al2O3-Ce0.33Zr0.67O2: An effective catalyst for NOx storage and reduction
An effective catalyst of NOx storage and reduction (NSR), Pt-Ru/Ba/ACZ(ACZ=Al2O3-Ce0.33Zr0.67O2), has been presented through using ACZ as a support. The catalyst was well characterized by XRD, TEM, N-2 physisorption, H-2-TPR and XPS. Ce0.33Zr0.67 solid solution was formed in the catalyst. The effects of Ru addition on NSR performances were investigated. In comparison with Pt/Ba/ACZ, the addition of Ru in Pt-Ru/Ba/ACZ drops the reduction temperature of Pt, an obvious promoting effect on NSR was observed above 200 degrees C. The presence of 5 vol% CO2 in feed gas shows an inhibiting effect on NOx storage and reduction. (C) 2014 Elsevier B.V. All rights reserved.