燃料化学学报2017，Vol.45Issue(12)：1508-1513,6.
Ho掺杂对Mn-Ce/TiO2低温SCR催化剂的脱硝性能影响
Influence of Ho doping on the deNOx performance of Mn-Ce/TiO2 low temperature SCR catalyst
摘要
Abstract
A series low temperature SCR catalysts Mn0. 4 Ce0. 07 Hox/TiO2 catalysts with different Ho doping ratios were prepared by impregnation method. The effects of Ho doping on the denitrification of Mn-Ce/TiO2 low temperature SCR catalyst were studied. The catalysts were characterized by using X-ray photoelectron spectroscopy ( XPS) , X-ray fluorescence probe ( XRF) , Brunauer-Emmett-Teller ( BET) surface measurement, X-ray diffraction (XRD) and NH3-temperature programmed desorption (NH3-TPD). The results showed that the doping of Ho can improve the low temperature denitrification performance of Mn-Ce/TiO2 catalyst. The catalytic efficiency of Mn0. 4 Ce0. 07 Ho0. 1/TiO2 with the ratio of Ho:Ti=0. 1 reached 91. 17% at 200℃, which is the highest during the process. The catalytic efficiency could reach more than 80% at 140-240 ℃. The characterization results showed that Ho doping can increase the surface area of the catalyst, increase the concentration of chemisorbed oxygen in the catalyst and increase the deposition amount of Ce on the catalyst surface.关键词
选择性催化还原(SCR)/Ho/催化剂/Mn-Ce/TiO2Key words
selective catalytic reduction/holmium/catalyst/Mn-Ce/TiO2分类
化学工程引用本文复制引用
李伟,张成,李鑫,谭鹏,方庆艳,陈刚..Ho掺杂对Mn-Ce/TiO2低温SCR催化剂的脱硝性能影响[J].燃料化学学报,2017,45(12):1508-1513,6.基金项目
The project was supported by the National Natural Science Foundation of China (51676076) and National International Science and Technology Cooperation Project(2015DFA60410).国家自然科学基金(51676076)和国家国际科技合作专项项目(2015DFA60410)资助 （51676076）
