锑掺杂对Mn-Ce/TiO2催化剂脱硝性能的影响  

EFFECT OF ANTIMONY DOPING ON DENITRATION PERFORMANCE OF Mn-Ce TiO2 CATALYST

作　　者：王献忠[1] 吴彦霞[2] 梁海龙[2] 陈鑫[2] 陈琛 晏根平[1] 戴长友 陈玉峰[2] Wang Xianzhong;Wu Yanxia;Liang Hailong;Chen Xin;Chen Chen;Yan Genping;Dai Changyou;Chen Yufeng(Jiangxi Provincial Key Laboratory of Industrial Ceramics,Pingxiang University,Pingxiang,Jiangxi 337055;Ceramics Science Institute,China Building Materials Academy;Ruitai Technology Co.Ltd.)

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

出　　处：《石油炼制与化工》2021年第2期67-72,共6页Petroleum Processing and Petrochemicals

基　　金：国家自然科学基金项目(21866026,51702308);江西省重点研发计划项目(20192BBG70058);江西省教育厅科学技术研究项目(GJJ161247)。

摘　　要：采用浸渍法制备了一系列Sb掺杂的Mn-Ce-Sb/TiO2催化剂,考察了Sb/TiO2摩尔比对催化剂脱硝性能的影响,采用X射线衍射、N 2吸附-脱附、NH 3程序升温脱附、H 2程序升温还原等表征手段对Mn-Ce/TiO2和Mn-Ce-Sb/TiO2(Sb/TiO2摩尔比2∶10)催化剂进行表征,并对两种催化剂的脱硝性能、抗硫和抗水性能进行对比。结果表明:Sb的掺杂有利于催化剂的活性组分在载体上更好地分散,促进活性组分与载体之间的相互作用,促进低温氧化还原反应的进行;Mn-Ce-Sb/TiO2催化剂具有较大的比表面积、较多的表面酸性位及优良的氧化还原性能,因此,与Mn-Ce/TiO2催化剂相比,Mn-Ce-Sb/TiO2催化剂具有更高的选择性催化还原NO活性及较好的抗硫、抗水性能。A series of Sb doped Mn-Ce-Sb/TiO2 catalysts was prepared by impregnation method.The effect of Sb TiO2 molar ratio on the denitration performance of the catalysts was investigated.The catalysts Mn-Ce/TiO2 and Mn-Ce-Sb/TiO2(Sb TiO 2 molar ratio 2∶10)were characterized by XRD,N 2 adsorption-desorption,NH 3-TPD and H 2-TPR,and the denitration performance,sulfur resistance and water resistance of the two catalysts were compared.The results showed that Sb doping was beneficial to the dispersion of active components on the support,to the interaction between active components and support and the low temperature redox reaction.In addition,Mn-Ce-Sb/TiO 2(2∶10)catalyst has larger specific surface area,more surface acidic sites and excellent redox performance.Therefore,compared with Mn-Ce/TiO2 catalyst,Mn-Ce-Sb/TiO 2(2∶10)catalyst has better SCR activity of NO x,better resistance to sulfur and water.

关 键 词：锑掺杂 Mn-Ce/TiO2催化剂 脱硝 抗硫 抗水 

分 类 号：X701[环境科学与工程—环境工程] TQ426[化学工程]