文献类型：期刊文献

英文题名：Unusual adsorption and desorption behaviors of NO and CO on nanoporous nickel phosphate VSB-5: In situ FT-IR and TPD study

作者：Chen, Zhi[1,2]; Zhou, Dantong[1]; Gao, Tong[1]; Shen, Weihua[3]; Dong, Xiaoping[4]; Naito, Shuichi[2]; Qin, Laishun[1]; Huang, Yuexiang[1]

机构：[1] College of Materials Science and Engineering, China Jiliang University, No. 258 Xueyuan Street, Xiasha Higher Education District, Hangzhou, Zhejiang Province, 310018, China; [2] Department of Material and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, 221-8686, Japan; [3] School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [4] Department of Chemistry, School of Sciences, Zhejiang Sci-Tech University, 928 Second Avenue, Xiasha Higher Education Zone, Hangzhou, 310018, China

年份：2015

卷号：258

起止页码：199

外文期刊名：Catalysis Today

收录：EI(收录号：20152701005548)

语种：英文

外文关键词：Catalysts - Isotopes - Pollution control - Adsorption - Temperature programmed desorption

摘要：To develop new catalyst for controlling NO emission is important for pollution control. The investigation of NO or CO adsorption could contribute the fundamental understanding the reaction mechanism of de-NOx process and the coordinate state of the specific catalyst. Nanoporous nickel phosphate VSB-5 is an attractive catalyst and is firstly employed as the active component for the adsorption of NO and/or CO. In situ FT-IR and temperature programmed desorption (TPD) are used to characterize the adsorption behaviors. A large amount of NO and/or CO can be adsorbed in the pores of VSB-5 and strong bands from different adsorbed species are observed by in situ FT-IR investigation, which is confirmed by isotopic labeled adsorption. The amount of adsorption at room temperature unusually increases by raising the adsorption temperature to 100-200 °C. The possible reason may be explained by the generation of more active sites at elevated temperature which plays a more important role than corresponding desorption. The adsorption of CO and NO is competitive and the adsorbed CO may be replaced by NO due to a stronger bonding strength of the latter. This report contributes to monitor the active sites in the pores of VSB-5 and also makes VSB-5 to be an active candidate for NO or CO related catalytic process. ? 2015 Elsevier B.V. All rights reserved.