高等学校化学学报2011，Vol.32Issue(10)：2360-2366,7.
镧、锰共掺杂改性CeO2-ZrO2-Al2O3固溶体的性能
Effects of Doping La, Mn on the Properties of CeO2-ZrO2-Al2O3
摘要
Abstract
A series of CeO2-ZrO2-Al2O3 (CZA) materials was prepared by the co-precipitation method and characterized by specific surface area measurements ( BET), X-ray diffraction ( XRD), H2 -temperature-programmed reduction (H2-TPR ), X-ray photoelectron spectroscopy (XPS) and X-ray fluorescence (XRF ). The results showed that these successfully-prepared CZA solid solutions had an optimum textural performance after calcinations at 600 ℃ for 3 h and the support sample of doping La and Mn together still possessed the high thermal stability. According to the H2-TPR, the sample modified by La and Mn showed the best property of reducibility at low temperature. XPS results indicated that by doping La, the transfer of Mn from the bulk to the surface in calcinations was restrained and the concentration of adsorbed oxygen was retained.关键词
CeO2 -ZrO2-Al2O3/MnOx/还原性能Key words
CeO2-ZrO2-Al2O3/ MnOx/ Reduction property分类
化学化工引用本文复制引用
张雪乔,信欣,刘建英,刘盛余,赵明,陈耀强..镧、锰共掺杂改性CeO2-ZrO2-Al2O3固溶体的性能[J].高等学校化学学报,2011,32(10):2360-2366,7.基金项目
国家自然科学基金(批准号:20773090)和国家教育部博士学科点基金(批准号:200806100009)资助. （批准号:20773090）
