Mn-Ce催化剂低温脱硝性能的研究  

Study on Low Temperature Denitration Performance of Mn-Ce Catalyst

作　　者：王献忠[1,2,3] 吴彦霞 陈鑫[2] 陈琛[2] 梁海龙 朱江[3] 戴长友 唐婕 WANG Xianzhong;WU Yanxia;CHEN Xin;CHEN Chen;LIANG Hailong;ZHU Jiang;DAI Changyou;TANG Jie(Jiangxi Provincial Key Laboratory of Industrial Ceramics,Pingxiang University,Pingxiang 337055,China;Ceramics Science Institute,China Building Materials Academy,Beijing 100024,China;Jiangxi Shinco Environmental Protection Co.,Ltd.,Pingxiang 337000,China;Ruitai Technology Co.,Ltd.,Beijing 100024,China)

机构地区：[1]萍乡学院江西省工业陶瓷重点实验室,萍乡337055 [2]中国建筑材料科学研究总院陶瓷科学研究院,北京100024 [3]江西新科环保股份有限公司,萍乡337000 [4]瑞泰科技股份有限公司,北京100024

出　　处：《硅酸盐通报》2020年第1期326-331,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(21866026);江西省重点研发计划(20192BBG70058);江西省教育厅科学技术研究项目(GJJ161247)

摘　　要：采用浸渍法和共沉淀法制备了Mn-Ce/TiO2-SnO2、MnCeTiOx及MnCeSnTiOx催化剂。考察了催化剂在80~180℃之间的脱硝性能以及在180℃下通入150 ppm SO2300 min后催化剂的抗硫性能。通过XRD、BET、NH 3-TPD等方法对催化剂的理化性质进行了表征。结果表明,浸渍法制备的Mn-Ce/TiO2-SnO2催化剂表现出了最佳的低温脱硝性能,在100℃时,可达90%以上,但其抗硫性能最差,在180℃下通入150 ppm SO2300 min后,脱硝效率由最初的约100%,下降为40%。在掺杂Sn之后,共沉淀法制备的MnCeTiOx催化剂的低温活性及抗硫性能均有得到了有效提高。MnCeSnTiO x催化剂表现出了最佳的抗硫性能,在180℃下通入150 ppm SO2300 min后,脱硝效率由最初的约100%,下降为65%。Mn-Ce/TiO2-SnO2,MnCeTiOx and MnCeSnTiOx catalysts were prepared by impregnation method and coprecipitation method.The denitration performance of the catalyst between 80℃ and 180℃ and the sulfur resistance of the catalyst after 150 ppm SO2 for 300 min were investigated.The physicochemical properties of the catalyst were characterized by XRD,BET and NH 3-TPD.The results show that the Mn-Ce/TiO2-SnO2 catalyst prepared by impregnation method shows the best low-temperature denitration performance,which can reach more than 90%at 100℃.However,its sulfur resistance is the worst.After introducing 150 ppm SO2 for 300 min at 180℃,the denitration efficiency is reduced from the initial 100%to 40%.After doping with Sn,the low temperature activity and sulfur resistance of the MnCeTiO x catalyst prepared by coprecipitation method have been effectively improved.The MnCeSnTiO x catalyst showed the best sulfur resistance.After introducing 150 ppm SO2 for 300 min at 180℃,the denitration efficiency decreases from about 100% to 65%.

关 键 词：浸渍 共沉淀 脱硝 催化剂 

分 类 号：X511[环境科学与工程—环境工程]