化工进展2018，Vol.37Issue(1)：119-127,9.DOI:10.16085/j.issn.1000-6613.2017-0649
煅烧温度对Mo-Mn/TiO2催化剂脱硝脱汞活性的影响
Influence of calcination temperature on the activity of Mo-Mn/TiO2 catalyst for NOxand Hg0removal
摘要
Abstract
The influence of calcination temperature(300℃、450℃、600℃、750℃)on the activity of Mo-Mn/TiO2(MMT) catalysts prepared by an impregnation method for NOxand Hg0removal was studied. The results showed that,relatively low calcination temperature was beneficial to improve the catalytic activity of MMT catalysts,and reduce the inhibitory effect of SO2effectively,and the best calcination temperature was 300℃. Physicochemical characteristics of MMT catalysts were investigated by using different analysis techniques of BET,XRD,H2-TPR,FTIR and XPS. The studies showed that relatively low calcination temperature could give high the proportion of active components and high dispersion of metallic oxide on the surface of TiO2as well as increase the low temperature reduction property of catalysts. With the increase of calcination temperature,the specific surface area and total pore volume gradually decreased. The average pore diameter first increased and then decreased, because of the agglomeration of MMT occurred at high calcination temperature. At the same time,the gradually conversion of MnO2to Mn2O3,and the transformations of the crystalline phase of TiO2from anatase to rutile and MoO3from amorphous to crystalline,synergistically led to the decrease of catalytic activity on the removal of NOxand Hg0.关键词
煅烧温度/选择性催化还原/Mo-Mn/TiO2/固定床/催化剂Key words
calcination temperature/selective catalytic reduction(SCR)/Mo-Mn/TiO2/fixed-bed/catalyst分类
资源环境引用本文复制引用
胡鹏,段钰锋,陈亚南,丁卫科,李春峰,李娜,柳帅,刘猛,王双群..煅烧温度对Mo-Mn/TiO2催化剂脱硝脱汞活性的影响[J].化工进展,2018,37(1):119-127,9.基金项目
国家重点研发计划(2016YFB0600604)及国家自然科学基金(51576044)项目. （2016YFB0600604）
