Steam effects over Pd/Ce_(0.67)Zr_(0.33)O_2 three-way catalyst

作     者：王建强 沈美庆 王军 王务林 

作者机构：Key Laboratory for Green Chemical Technology of State Education MinistrySchool of Chemical Engineering&TechnologyTianjin University China Automotive Technology&Research Center State Key Laboratory of EnginesTianjin University 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2011年第29卷第3期

页      面：217-224页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National High-Tech Research and Development Program of China(2009AA064803) 

主　　题：three-way catalysts water-gas shift steam reforming turnover frequency compensation effect rare earths 

摘      要：In the purification process of automobile exhaust,existing water plays an important role as an oxidant,which converts CO and hydrocarbons（HCs） by the water-gas shift（WGS） and the steam reforming（SR） reactions,respectively,especially at high *** it is major component of the exhaust which can affect significantly the thermal stability of the three-way *** experiments were carried out close to the real operation conditions（GHSV,concentration,etc.） with a Pd/Ce0.67Zr0.33O2 catalyst supplying information on the CO and C3H8 oxidation reactions in feedstream formed by different reactant *** obtained results showed that the activity of the CO and C3H8 oxidation was promoted by the addition of steam due to the WGS and SR *** WGS and SR reaction were competitive under oxygen-lean *** kinetic analysis was considered for WGS and SR reactions.