摘要
CeO2-based oxygen materials were prepared with co-precipitation method and characterized via Brunauer-Emmet Teller(BET)method,X-ray diffraction(XRD)and temperature-programmed reduction(H2-TPR).This paper revealed that three CeO2-based oxygen storage materials are all forming homogeneous solid solution.Among the samples,CeO2-ZrO2-Al2O3(CZA)has the best textural properties and excellent thermal stability.The specific surface area and pore volume of aged CZA are 90 m2/g and 0.29 mL/g.We proposed a viewpoint:Al3+ might insert among the interspace of fluorite structure or highly dispersal in solid solutions.
CeO2-based oxygen materials were prepared with co-precipitation method and characterized via Brunauer-Emmet Teller（BET） method, X-ray diffraction（XRD） and temperature-programmed reduction（H2-TPR）. This paper revealed that three CeO2-based oxygen storage materials are all forming homogeneous solid solution. Among the samples, CeO2-ZrO2-Al2O3（CZA） has the best textural properties and excellent thermal stability. The specific surface area and pore volume of aged CZA are 90 m2/g and 0.29 mL/g. We proposed a viewpoint： Al3＋ might insert among the interspace of fluorite structure or highly dispersal in solid solutions.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第12期2484-2486,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20773090)
国家“八六三”计划项目(批准号:2006AA06Z347)
博士点基金(批准号:20070610026)资助
