文献类型：期刊文章

作　　者：王晓波[1,2] 伍士国[1,2] 邹伟欣[1,2] 虞硕涵[1,2] 归柯庭[3] 董林[1,2]

机构地区：[1]南京大学化学化工学院介观化学教育部重点实验室,江苏南京210093 [2]南京大学现代分析中心江苏省机动车尾气污染控制重点实验室,江苏南京210093 [3]东南大学能源与环境学院能源热转换及其过程测控教育部重点实验室,江苏南京210096

出　　处：《Chinese Journal of Catalysis》

基　　金：supported by the National High Technology Research and Development Program of China (863 Program,2015AA03A401);the National Natural Science Foundation of China (51276039);the Fundamental Research Funds for the Central Universities (020514380020,020514380030);the Postdoctoral Science Foundation of Jiangsu Province,China (1501033A)~~

年　　份：2016

卷　　号：37

期　　号：8

起止页码：1314-1323

语　　种：中文

收录情况：AJ、BDHX、BDHX2014、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EI(收录号：20163602768284)、JST、RSC、SCI(收录号：WOS:000381326900016)、SCI-EXPANDED(收录号：WOS:000381326900016)、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：A series of Fe‐Mn/Al2O3 catalysts were prepared and studied for low temperature selective catalytic reduction （SCR） of NO with NH3 in a fixed‐bed reactor. The effects of Fe and Mn on NO conversion and the deactivation of the catalysts were studied. N2 adsorption‐desorption, X‐ray diffraction, transmission electron microscopy, energy dispersive spectroscopy, H2 temperature‐programmed reduction, NH3 temperature‐programmed desorption, X‐ray photoelectron spectroscopy （XPS）, thermal gravimetric analysis and Fourier transform infrared spectroscopy were used to character‐ize the catalysts. The 8Fe‐8Mn/Al2O3 catalyst gave 99%of NO conversion at 150？？ and more than 92.6%NO conversion was obtained in a wide low temperature range of 90–210？？. XPS analysis demonstrated that the Fe3＋was the main iron valence state on the catalyst surface and the addition of Mn increased the accumulation of Fe on the surface. The higher specific surface area, enhanced dispersion of amorphous Fe and Mn, improved reduction properties and surface acidity, lower binding energy, higher Mn4＋/Mn3＋ratio and more adsorbed oxygen species resulted in higher NO conversion for the 8Fe‐8Mn/Al2O3 catalyst. In addition, the SCR activity of the 8Fe‐8Mn/Al2O3 cata‐lyst was only slightly decreased in the presence of H2O and SO2, which indicated that the catalyst had better tolerance to H2O and SO2. The reaction temperature was crucial for the SO2 resistance of catalyst and the decrease of catalytic activity caused by SO2 was mainly due to the sulfate salts formed on the catalyst.

关 键 词：Nitrogen monoxide  Low-temperature selective catalytic reduction  Fe-Mn catalyst  X-ray photoelectron spectroscopy  Sulfur dioxide  Fourier transform infrared spectroscopy  

分 类 号：O643.36] X701[化学类]