燃料化学学报2017，Vol.45Issue(4)：497-504,8.
过渡金属对选择性催化还原脱硝CeO2@TiO2催化剂低温活性的促进作用
Promoting effect of transition metal on low-temperature deNOx activity of CeO2@TiO2 catalyst for selective catalytic reduction
摘要
Abstract
Transition metal M ( M=Mn, Co, Fe and Cu ) modified amorphous CeO2@TiO2 catalysts were prepared via a spontaneous deposition strategy. The low-temperature deNOx activity of M-CeO2@TiO2 for selective catalytic reduction was investigated. XRD, TEM, N2 adsorption-desorption, H2-TPR, NH3-TPD and in-situ FT-IR were used to study the structure, surface property and low-temperature NH3-SCR reaction performance of M-CeO2@TiO2 . The results showed that the M-CeO2@TiO2 had better low-temperature oxidation reducibility and more surface acid. Cu doping had the most significant promoting effect on low-temperature deNOx activity for selective catalytic reduction. During the low-temperature NH3-SCR reaction, both the L-H and E-R mechanisms existed over the Cu-CeO2@TiO2 and the L-H mechanism could play a pivotal role due to the"fast SCR"process.关键词
过渡金属掺杂/非晶态/选择性催化还原/低温活性/促进作用Key words
transition metals doping/amorphous phase/selective catalytic reduction/low-temperature activity/promoting effect分类
化学化工引用本文复制引用
王明洪,王亮亮,刘俊,费兆阳,陈献,汤吉海,崔咪芬,乔旭..过渡金属对选择性催化还原脱硝CeO2@TiO2催化剂低温活性的促进作用[J].燃料化学学报,2017,45(4):497-504,8.基金项目
The project was supported by the National Natural Science Foundation of China ( 21306089 ) and Innovation Foundation of Jiangsu Province (SJLX15-0347).国家自然科学基金(21306089)和江苏省创新基金(SJLX15-0347)资助 （ 21306089 ）
