硅酸盐通报2017，Vol.36Issue(10)：3466-3474,9.
低温等离子改性对Ce/TiO2-Al2O3脱硝性能的影响
Effect of Non-thermal Plasma Treated Ce/TiO2-Al2O3 Catalyst on Its NH3-SCR Activity
摘要
Abstract
The Ce/TiO2-Al2O3 catalysts with different molar ratios of supports were prepared by the incipient-wetness impregnation method , followed by the performance evaluation , to sort out the best ratio of modified sample ( Ti/Al=2:1 ) .After the treatment of non-thermal plasma , the whole performances of the catalyst including NO conversion , N2 selectivity and stability were well improved , at about 350 ℃, the optimal NO conversion efficiency is respectively 90.23％, 95.67％before or after the modification . Besides , according to the results of alkali metal resistance experiment , the modified catalyst has a better resistance and the NO conversion efficiency of treated and untreated samples is respectively 63.25％, 70. 54％.Based on the analytical consequence of XRD , BET, FTIR, UV-vis, NH3-TPD, SEM, XPS, H2-TPR, all perfect activity of the Ce/TiO2-Al2O3 catalyst is greatly related with the non-thermal plasma treatment , which is for two cases that it can increase the amount of Ce 3+ species to generate more chemisorbed oxygen , the way of modification and then calcination is beneficial for the increment of Bronsted and Lewis acidic sites .关键词
浸渍法/低温等离子体/抗碱金属/化学吸附氧/改性Key words
impregnation method/non-thermal plasma/alkali metal resistance/chemisorbed oxygen/modification分类
资源环境引用本文复制引用
陈凯歌,陈若愚,唐喆,仓辉,韩粉女,许琦..低温等离子改性对Ce/TiO2-Al2O3脱硝性能的影响[J].硅酸盐通报,2017,36(10):3466-3474,9.基金项目
国家重点研发计划子课题项目(2016YFC0209203) （2016YFC0209203）
