乙酸乙酯在Al2O3-Ce0.5Zr0.5O2负载的金属氧化物催化剂上的催化燃烧

制备了Fe, Co, Cu, Cr和Mn金属氧化物催化剂, 所用载体为Al2O3-Ce0.5Zr0.5O2复合氧化物. 利用X射线衍射(XRD), 程序升温还原(TPR), 储氧量测试, BET比表面测试和光电子能谱(XPS)表征了催化剂. 并利用活性测试表征了各种催化剂对乙酸乙酯催化燃烧能力. 各种表征结果证实, 由于催化剂Mn/Al2O3-Ce0.5Zr0.5O2(1:2, 质量比)具有最多的可还原物种, Cu/Al2O3-Ce0.5Zr0.5O2(1:2)具有较多的可还原物种和最强的可还原能力, 使它们对乙酸乙酯催化燃烧表现出了最好的活性. 在催化剂Cu/Al2O3-Ce0.5Zr0.5O2(1:2)和Mn/Al2O3-Ce0.5Zr0.5O2(1:2)上, 乙酸乙酯于245 ℃转化了99%, 表明这两种催化剂具有广泛的应用潜力.

Catalytic Combustion of Ethyl Acetate over Al2O3-Ce0.5Zr0.5O2 Supported Metal Oxide Catalysts

The catalysts for the combustion of ethyl acetat ewer eprepared using Fe,Co,Cu,Cr,and Mn metal oxides as active components supported on Al2O3-Ce0.5Zr0.5O2 mixed oxides and characterized by X-ray diffraction(XRD),temperature programmed reduction(TPR),oxygen storage capacity measurement,BET surface area,XPS measurement,and activity test.According to the results of characterization,it was found that Cu/Al2O3-Ce0.5Zr0.5O2(1:2,mass ratio)and Mn/Al2O3-Ce0.5Zr0.5O2(1:2)catalysts presented excellent activity for the catalytic combustion of ethyl acetate,because of the more reducible species and high reducibility of the catalysts.For ethyl acetate oxidation,more than 99%convemion Was achieved at 245 ℃ over catalysts Cu/A12O3-Ce0.5Zr0.4O2(1:2)and Mn/Al2O3-Ce0.5Zr0.5O2(1:2,mass ratio)indicating that the catalysts had great potential for wide use.