文献类型：期刊文献

英文题名：Pt and Mo Co-Decorated MnO2 Nanorods with Superior Resistance to H2O, Sintering, and HCl for Catalytic Oxidation of Chlorobenzene

作者：Chen, Gong[1];Cai, Yuanpu[1];Zhang, Hao[1];Hong, Dongsen[1];Shao, Shijie[1];Tu, Chensheng[1];Chen, Yuexiang[1];Wang, Feng[1];Chen, Biao[1];Bai, Yuting[1];Wang, Xingyi[1];Dai, Qiguang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China

年份：2021

卷号：55

期号：20

起止页码：14204

外文期刊名：ENVIRONMENTAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20214311061071);WOS:【SCI-EXPANDED(收录号:WOS:000710453500079)】；

基金：This work was supported by the National Key Research and Development Program of China (No. 2016YFC0204300), National Natural Science Foundation of China (No. 21777043 and 21976056), and Natural Science Foundation of Shanghai (19ZR1412900).

语种：英文

外文关键词：catalytic combustion; CVOCs; manganese oxide; acid-redox; thermal stability; chemical stability

摘要：MnO2 nanorods with exposed (110), (100), or (310) facets were prepared and investigated for catalytic oxidation of chlorobenzene, then the (110)-exposed MnO2 nanorod was screened as the candidate parent and further modified by Pt and/ or Mo with different contents. The loading of Pt enhanced activity and versatility of the pristine MnO2, but the polychlorinated byproducts and Cl-2 were promoted, conversely, as the decoration of Mo inhibited the polychlorinated byproducts and improved durability. Determination of structure and properties suggested that Pt facilitated the formation of more oxygen vacancies/Mn3+ and surface adsorbed oxygen weakened the bonds of surface lattice oxygen, while Mo stabilized surface lattice oxygen and increased acid sites, especially Bronsted acid sites. Expectedly, Pt and Mo bifunctionally modified MnO2 presented a preferable activity, selectivity, and durability along with the super resistance to H2O, hightemperature, and HCl, and no prominent deactivation was observed within 30 h at 300 degrees C under dry and humid conditions, even at high-temperature aging at 600 degrees C and HCl-pretreatment (7 h). In this work, the optimized Mo and Pt codecorated MnO2 was considered a promising catalyst toward practical applications for catalytic oxidation of actual Cl-VOCs emissions.