金属铈改性对铁基柴油机尾气脱硝催化剂性能的影响  

Effect of Cerium Modification on the Performance of Iron-based Diesel Exhaust Denitration Catalyst

作　　者：张浩南 陈耿[1] ZHANG Hao-nan;CHEN Geng

机构地区：[1]宁波大学海运学院

出　　处：《节能与环保》2022年第4期71-73,共3页

基　　金：宁波市自然科学基金(2018A610281);宁波大学研究生科研创新基金(IF2020133)。

摘　　要：氧化铁具有良好的氧化还原性,CHA型骨架结构的SAPO-34分子筛具有优异的微孔结构和较大的比表面积,热稳定性高,因此Fe/SAPO-34材料被广泛研究用于尾气脱销,但其低温活性较差,活性窗口偏窄。利用金属铈改性能够有效上述缺点,通过现代表征技术详细阐述其中原因。Iron oxide has good redox properties. SAPO-34 molecular sieve with Cha skeleton structure has excellent microporous structure, large specific surface area and high thermal stability. Therefore, Fe/SAPO-34 material has been widely studied for tail gas out of stock, but its low-temperature activity is poor and the activity window is narrow. The above shortcomings can be effectively modified by cerium. The reasons are described in detail through modern characterization technology.

关 键 词：铈 分子筛 氧化铁 氨选择性催化还原 

分 类 号：TQ426[化学工程] X734.2[环境科学与工程—环境工程]