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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.
Fe, Co, Cu, Cr and Mn metal oxide catalysts were prepared by using Al2O3-Ce0.5Zr0.5O2 composite oxide as raw material.The structures of the catalysts were characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR) BET specific surface and photoelectron spectroscopy (XPS) were used to characterize the catalysts. The catalytic activity of various catalysts on the catalytic combustion of ethyl acetate was characterized. Various characterization results show that the catalyst Mn / Al2O3-Ce0.5Zr0.5O2 ( 1: 2, mass ratio) has the most reducible species, Cu / Al2O3-Ce0.5Zr0.5O2 (1: 2) has more reducible species and strongest reducibility, making them ethyl acetate catalyzed Combustion showed the best activity in the catalyst Cu / Al2O3-Ce0.5Zr0.5O2 (1: 2) and Mn / Al2O3-Ce0.5Zr0.5O2 (1: 2), ethyl acetate conversion at 245 ℃ 99%, indicating that these two catalysts have a wide range of potential applications.