铈锆摩尔比对Ce_(0.3+x)Zr_(0.6-x)Y_(0.1)O_(1.95)系列储氧材料性能的影响  

Effect of Cerium/Zirconium Molar Ratio on the Property of Series OSM Ce_(0.3+x)Zr_(0.6-x)Y_(0.1)O_(1.95)

作　　者：毛小波[1] 陈耀强[1] 钟俊波[1] 王健礼[1] 赵明[1] 龚茂初[1] 

机构地区：[1]四川大学化学学院,成都610064

出　　处：《高等学校化学学报》2007年第3期559-561,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20273043);国家自然科学重点基金(批准号:20333030)资助

摘　　要：A series of materials Ce0.3+xZr0.6-xY0.1O1.95 were prepared by co-precipitation routine and the property of these materials was studied by means of oxygen storage capacity, temperature programming reduction, X-ray diffraction, transmission electronic microscope, and X-ray photoelectron spectroscopy. The results indicate that the materials with a low Ce/Zr molar ratio possess higher cerium atom utilization ratio, reducibility and thermal stability than the materials with a high Ce/Zr ratio, and Ce0.35Zr0.55Y0.1O1.95 possesses the best properties.A series of materials Ce0. 3 ＋xZr0. 6-xY0.1O1. 95 were prepared by co-precipitation routine and the property of these materials was studied by means of oxygen storage capacity, temperature programming reduction, X-ray diffraction, transmission electronic microscope, and X-ray photoelectron spectroscopy. The results indicate that the materials with a low Ce/Zr molar ratio possess higher cerium atom utilization ratio, reducibility and thermal stability than the materials with a high Ce/Zr ratio, and Ce0.35Zr0.55Y0.1O1.95 possesses the best properties.

关 键 词：储氧材料(OSM) 储氧量(OSC) 铈锆比[n(Ce)/n(Zr)] 铈原子利用率 

分 类 号：O641[理学—物理化学]