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双金属MOF-74-CoMn催化剂的制备及其CO选择性催化还原技术应用
Release time:2019-11-01 Hits:
Indexed by: Journal Papers
First Author: 武卓敏
Correspondence Author: Shi, Y (reprint author), Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn, Sch Environm Sci & Technol, Dalian 116024, Peoples R China.; Shi, Y (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Sch Environm Sci & Technol, Dalian 116024, Peoples R China.
Co-author: 石勇,李春艳,牛丹阳,楚奇,熊巍,李新勇
Date of Publication: 2019-08-15
Journal: 化学学报
Included Journals: SCIE、PKU
Document Type: J
Volume: 77
Issue: 8
Page Number: 758-764
ISSN No.: 0567-7351
Key Words: 双金属有机骨架材料;MOF-74-CoMn;选择性催化还原;CO;NOx;水热法
Abstract: 采用水热法成功地合成了不同比例的双金属MOF-74-CoMn催化剂,并成功用于以CO为还原剂的选择性催化还原脱硝(CO-SCR)反应.实验结果表明,双金属MOF-74-CoMn催化剂的NOx转化率普遍高于单金属MOF-74-Co催化剂,且反应温度窗口更宽,其中,MOF-74-Co1Mn2的NOx转化率最高,在175~275℃的温度范围内接近100%.进而,通过X射线粉末衍射(XRD),热重分析(TGA),扫描电镜(SEM),N2吸附/脱附,X-射线光电子光谱(XPS),氢气程序升温还原性能测试(H2-TPR)和原位红外光谱(FTIR)技术对双金属MOF-74-CoMn催化剂进行了表征和分析,发现金属Co、Mn的协同作用可以促进不饱和金属位点和氧空位的形成,从而提高CO选择性催化还原反应(CO-SCR)的效率.
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