文献类型：期刊文献

英文题名：Investigation of Fe-Ni Mixed-Oxide Catalysts for the Reduction of NO by CO: Physicochemical Properties and Catalytic Performance

作者：Du, Xuexun[1];Yao, Tian-Liang[2];Wei, Qinglian[1];Zhang, Hao[1];Huang, Yongmin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China;[2]Shanghai Inst Space Prop, Shanghai 201112, Peoples R China

年份：2019

卷号：14

期号：17

起止页码：2966

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20193207277596);WOS:【SCI-EXPANDED(收录号:WOS:000480040200001)】；

基金：This work was supported by the National Natural Science Foundation of China (21476071) and by the Research Centre of Analysis and Test of East China University of Science and Technology (ECUST).

语种：英文

外文关键词：carbon monoxide; nitric oxide; reaction mechanisms; reduction; synthetic methods

摘要：A series of Fe-Ni mixed-oxide catalysts were synthesized by using the sol-gel method for the reduction of NO by CO. These Fe-Ni mixed-oxide catalysts exhibited tremendously enhanced catalytic performance compared to monometallic catalysts that were prepared by using the same method. The effects of Fe/Ni molar ratio and calcination temperature on the catalytic activity were examined and the physicochemical properties of the catalysts were characterized by using XRD, Raman spectroscopy, N-2-adsorption/-desorption isotherms, temperature-programmed reduction with hydrogen (H-2-TPR), temperature-programmed desorption of nitric oxide (NO-TPD), and X-ray photoelectron spectroscopy (XPS). The results indicated that the reduction behavior, surface oxygen species, and surface chemical valence states of iron and nickel in the catalysts were the key factors in the NO elimination. Fe0.5Ni0.5Ox that was calcined at 250 degrees C exhibited excellent catalytic activity of 100 % NO conversion at 130 degrees C and a lifetime of more than 40 hours. A plausible mechanism for the reduction of NO by CO over the Fe-Ni mixed-oxide catalysts is proposed, based on XPS and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analyses.