文献类型：期刊文献

英文题名：Highly Efficient Oxidation of Propane at Low Temperature over a Pt- Based Catalyst by Optimization Support

作者：Huang, Zhenpeng[1,2];Ding, Jiajia[1,2];Yang, Xinwei[3];Liu, Hao[4];Song, Peiyao[1,2];Guo, Yanglong[1,2];Guo, Yun[1,2];Wang, Li[1,2];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, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Hudong Heavy Machinery Co Ltd, Shanghai 200129, Peoples R China;[4]Kailong High Technol Co Ltd, Wuxi 214153, 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：56

期号：23

起止页码：17278

外文期刊名：ENVIRONMENTAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20224613113141);WOS:【SCI-EXPANDED(收录号:WOS:000882623800001)】；

基金：? ACKNOWLEDGMENTS Z.H. and W.Z. acknowledge financial support from the National Natural Science Foundation of China (21922602, 22076047) . Y.G. thanks the Shanghai Science and Technology Innovation Action Plan (20dz1204200) and Fundamental Research Funds for the Central Universities? X.Y. Shanghai Rising-star Program (20QB1400400) .

语种：英文

外文关键词：propane oxidation; support effect; Pt catalyst; C-H bond dissociation; oxidation mechanism

摘要：Pt-based catalysts have attracted widespread attention in environmental protection applications, especially in the catalytic destruction of light alkane pollutants. However, developing a satisfying platinum catalyst with high activity, excellent water resistance, and practical suitability for hydrocarbon combustion at low temperature is challenging. In this study, the Pt catalyst supported on the selected Nb2O5 oxide exhibited an efficient catalytic activity in propane oxidation and exceeded that of most catalysts reported in the literature. More importantly, the Pt/Nb2O5 catalyst maintained excellent activity and durability even after high -temperature aging at 700 degrees C and under harsh working conditions, such as a certain degree of moisture, high space velocity, and composite pollutants. The excellent performance of the Pt/Nb2O5 catalyst was attributed to the abundant metallic Pt species stabilized on the surface of Nb2O5, which prompted the C-H bond dissociation ability as the rate-determining step. Furthermore, propane was initially activated via oxidehydrogenation and followed the acrylate species path as a more efficient propane oxidation path on the Pt/Nb2O5 surface. Overall, Pt/Nb2O5 can be considered a promising catalyst for the catalytic oxidation of alkanes from industrial sources and could provide inspiration for designing superb catalysts for the oxidation of light alkanes.