文献类型：期刊文献

英文题名：Superior catalytic activity of Pd-based catalysts upon tuning the structure of the ceria-zirconia support for methane combustion

作者：Ding, Yuanqing[1,2];Jia, Yanyan[3,4,5];Jiang, Mingxiang[1,2];Guo, Yanglong[1,2];Guo, Yun[1,2];Wang, Li[1,2];Ke, Qingping[6];Ha, Minh Ngoc[7];Dai, Sheng[3,4,5];Zhan, Wangcheng[1,2,5]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Frontiers Sci Ctr Mat & Dynam Chem, Shanghai 200237, Peoples R China;[6]Anhui Univ Technol, Coll Chem & Chem Engn, Maanshan 243002, Anhui, Peoples R China;[7]Vietnam Natl Univ, VNU Key Lab Adv Mat Green Growth, VNU Univ Sci, Hanoi 100000, Vietnam

年份：2021

卷号：416

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20211010022495);WOS:【SCI-EXPANDED(收录号:WOS:000661105400054)】；

基金：This work was financially supported by the National Key Research and Development Program of China (2016YFC0204300) , the National Natural Science Foundation of China (21922602, 21976057, 22076047) , Shanghai Risingstar Program (20QA1402400) , Shanghai Science and Technology Innovation Action Plan (20dz1204200) and Fundamental Research Funds for the Central Universities. Additional support was provided by Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：Ceria-zirconia solid solution; Pd-based catalyst; Oxygen storage capacity; Methane combustion

摘要：Pd-based catalysts supported on CeO2-ZrO2 (CZ) mixed oxides have been universally applied toward the oxidation of methane, a strong greenhouse gas. Herein, CZ supports of different structures were prepared using hydrothermal (ST-CZ), co-precipitation (CP-CZ), and physical mixing (Mix-CZ) methods. Subsequently, the effects of the CZ support structure on the catalytic activity of the resulting Pd/CZ catalysts toward methane combustion were evaluated. ST-CZ shows the presence of cubic and tetragonal phases of CZ solid solutions, while CP-CZ is a pure tetragonal-phase solid solution and Mix-CZ is a mixture of CeO2 and ZrO2. The CZ solid solution improved the Pd dispersion and Pd2+/Pd ratio on the catalyst surface. Furthermore, CZ oxides with a two-phase composite structure resulted in higher oxygen storage capacity and oxygen mobility in the Pd/CZ catalysts than in the pure solid solution phase. Therefore, the Pd/ST-CZ catalyst shows superior catalytic activity for methane combustion than the other two catalysts.