文献类型：期刊文献

英文题名：An Efficient Co-Ni Hydrous Oxide Catalyst for Elimination of No Pollutant in Semi-Enclosed Spaces at Ambient Temperature

作者：Gao, Feng[2]; Lin, Bo[1]; Bao, Ziwei[1]; Wang, Aiyong[1]; Ding, Yuanqing[1]; Zhan, Wangcheng[1]; Wang, Li[1]; Guo, Yun[1]; Dai, Vista[2]; Guo, Yanglong[1]; Dai, Qiguang[1]

机构：[1] State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA, 99352, United States

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230142244)

语种：英文

外文关键词：Binary alloys - Cobalt compounds - Molar ratio - Morphology - Nickel oxide - Nitrates - Pore structure - Sodium compounds - Temperature

摘要：Co-Ni bimetallic hydrous oxides are applied for the abatement of low-concentration nitric oxide (NO) pollution in semi-enclosed spaces. The textural properties of these materials are characterized by surface area/porosity analyzer, SEM/TEM imaging coupled with elemental mapping. In situ DRIFTS, XPS and temperature-programmed desorption are applied to elucidate the NO trapping mechanisms. The NO storage capacity is tested by flowing low-concentration NO through these materials at ambient temperature. The Co/Ni molar ratio is found to greatly influence the surface area, pore structure and morphology, thus affecting the NO elimination performance. During NO storage, nitrite formation is found to be associated with Co, and nitrate formation is found to be associated with Ni. A synergy exists where nitrite formed on Co is further oxidized to nitrate by lattice oxygen on Ni. Finally, these materials are readily regenerated by washing with Na2S2O8 aqueous solution. ? 2023, The Authors. All rights reserved.