文献类型：期刊文献

英文题名：Regulating the Spatial Distribution of Ru Nanoparticles on CeO2 Support for Enhanced Propane Oxidation

作者：Sun, Yaxi[1,2];Ye, Fan[3,4];Ding, Jiajia[1,2];Li, Jinxia[3,4];Guo, Yun[1,2];Wang, Li[1,2];Guo, Yanglong[1,2];Dai, Sheng[3,4,5];Zhan, Wangcheng[1,2,5]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, Inst Fine Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China

年份：2022

卷号：5

期号：3

起止页码：3937

外文期刊名：ACS APPLIED NANO MATERIALS

收录：;EI(收录号：20221411907190);WOS:【SCI-EXPANDED(收录号:WOS:000800286500080)】；

基金：Y.S. and W.Z. acknowledge financial support from the National Key Research and Development Program of China (2016YFC0204300) and the National Natural Science Foundation of China (21922602, 22076047). Y.G. thanks the Shanghai Science and Technology Innovation Action Plan (20dz1204200). L.W. thanks the National Natural Science Foundation of China (21976057). S.D. acknowledges the support from the Shanghai Rising-Star Program (20QA1402400), the Fundamental Research Funds for the Central Universities, and the Program for Professor of Special Appointment (Eastern Scholar) at the Shanghai Institutions of Higher Learning.

语种：英文

外文关键词：propane oxidation; Ru catalyst; spatial distribution; stability; coprecipitation

摘要：Developing efficient catalysts for the total oxidation of propane at low temperatures is challenging; however, it is crucial for the purification of automotive exhaust and volatile organic compounds emitted in industrial processes. We report a highly stable and active Ru-based catalyst for propane oxidation by tuning Ru loading to achieve the balance between RuOx species in the CeO2 bulk and on the surface via a facile coprecipitation approach (Ru-CeO2). Compared to the Ru catalyst prepared through wet impregnation on a CeO2 support (Ru/CeO2), the prepared Ru-CeO2 catalyst allows for the formation of RuO, species with smaller particle sizes and lower oxidation states, as well as an increased number of oxygen vacancies on the catalyst surface, leading to a greater ability to adsorb and activate propane and oxygen. As a result, the Ru-CeO2 catalyst presents a substantially improved activity and durability toward propane oxidation, which can maintain 90% propane conversion at 220 degrees C for 50 h. This work highlights the synthetic tuning of the spatial distribution of Ru active sites within catalysts through a coprecipitation strategy for improved catalytic alkane oxidation, and the prepared Ru-CeO2 catalyst is a promising candidate material for industrial applications.