Steam effects over Pd/Ce0.67Zr0.33O2-Al2O3 three-way catalyst
来源期刊：JOURNAL OF RARE EARTHS2012年第8期
论文作者：王建强 沈美庆 王军 高继东 马杰 刘双喜
文章页码：748 - 752
摘 要：Ceria-zirconia-alumina （CZA） solid solution was prepared by sol-gel method in the present study. 0.5 wt.% Pd supported on CZA was prepared by incipient wetness impregnation. The steam effects for CO and C3H8 oxidation, three-way catalytic activity and stoichiometric window property were studied. The light-off temperature of the CO oxidation reaction shifted to a lower temperature due to the water-gas shift （WGS） reactions. The oxidation of C3H8 was enhanced due to the steam reforming （SR） reactions. The steam promoted the C3H8 oxidation and NO reduction in three-way catalytic reaction. The amplitude of stoichiometric window was amplified by the addition of water to the feed stream.
王建强1,2，沈美庆1，王军1，高继东2，马杰2，刘双喜2
1. Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering& Technology, Tianjin University2. China Automotive Technology & Research Center
摘 要：Ceria-zirconia-alumina （CZA） solid solution was prepared by sol-gel method in the present study. 0.5 wt.% Pd supported on CZA was prepared by incipient wetness impregnation. The steam effects for CO and C3H8 oxidation, three-way catalytic activity and stoichiometric window property were studied. The light-off temperature of the CO oxidation reaction shifted to a lower temperature due to the water-gas shift （WGS） reactions. The oxidation of C3H8 was enhanced due to the steam reforming （SR） reactions. The steam promoted the C3H8 oxidation and NO reduction in three-way catalytic reaction. The amplitude of stoichiometric window was amplified by the addition of water to the feed stream.
关键词：
