文献类型：期刊文献

英文题名：CuO, CeO2 Modified Mg-Al Spinel for Removal of SO2 from Fluid Catalytic Cracking Flue Gas

作者：Pi, Zhipeng[1];Shen, Benxian[1];Zhao, Jigang[1];Liu, Jichang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：54

期号：43

起止页码：10622

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20154601535216);WOS:【SCI-EXPANDED(收录号:WOS:000364356200009)】；

基金：Project 21476082 supported by National Natural Science Foundation of China and Project 222201414009 supported by the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Binary alloys - Catalyst activity - Cerium oxide - Fourier transform infrared spectroscopy - Magnesia - Cracks - Gas adsorption - Oxygen - Flue gases - Catalytic oxidation

摘要：A Mg-rich Mg-Al spinel modified with CuO and CeO2 via a cogelling method was used to remove SO2 from fluid catalytic tracking (FCC) flue gas. It was found that the generation of a MgO-CuO solid solution was prevented in the presence of CeO2. So CuO had a better dispersion on the adsorbent surface and showed a better catalytic oxidation activity. At the same time, when CuO was added, oxygen defects were found increased greatly in the lattice of CeO2 by Raman spectra and in situ FTIR spectra analyses. This improved the oxygen adsorption capacity of the catalyst. High catalytic oxidation activity and oxygen adsorption capacity of the catalyst enormously promote oxidation of SO2 to SO3, which is much easier to adsorbed by spinel. The SO2 breakthrough time was doubled when the Mg-Al spinel was modified with both CuO and CeO2.