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OALib Journal期刊
ISSN: 2333-9721
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介孔Fe-Cu复合金属氧化物纳米粉催化剂催化低温CO氧化
DOI: 10.1016/S1872-2067(15)60922-6, PP. 1711-1718
Keywords: 氧化铁,氧化铜,金属氧化物催化剂,介孔纳米粉,一氧化碳氧化,溶胶-凝胶法
Abstract:
？以环氧丙烷为凝胶剂,采用简便低廉的无表面活性剂的溶胶-凝胶法制备了一系列不同Cu/Fe摩尔比的高比表面积介孔Fe-Cu复合氧化物纳米粉末.运用微反应器-色谱体系考察了它们在低温CO氧化反应中的催化性能.采用X射线衍射、N2吸附-脱附、热重-差热分析、程序升温还原、傅里叶变换红外光谱和透射电镜对所制样品进行了表征.结果表明,这些介孔Fe-Cu复合氧化物催化剂具有纳米晶结构、窄的孔径分布和高的比表面积,在低温CO氧化反应中表现出高的活性和稳定性.CuO的添加影响了Fe2O3的结构和催化性能.当CuO含量为15mol%时,催化剂具有最高的比表面积和催化活性,在低温CO氧化反应中表现出较高的催化稳定性.
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