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高等学校化学学报 고등학교화학학보
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
2009年 12期 2484-2486 ,共3页

李红梅%周菊发%祝清超%曾少华%魏振玲%陈耀强%龚茂初

리홍매%주국발%축청초%증소화%위진령%진요강%공무초

CeO_2-ZrO_2-Al_2O_3%共沉淀法%热稳定性能%结构性能%固溶体 CeO_2-ZrO_2-Al_2O_3%共沉澱法%熱穩定性能%結構性能%固溶體
CeO_2-ZrO_2-Al_2O_3%공침정법%열은정성능%결구성능%고용체
CeO_2-ZrO_2-Al_2O_3%Co-precipitation method%Thermal stability%Structure property%Solid solution

CeO_2-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 CeO_2-based oxygen storage materials are all forming homogeneous solid solution. Among the samples, CeO_2-ZrO_2-Al_2O_3 (CZA) has the best textural properties and excellent thermal stability. The specific surface area and pore volume of aged CZA are 90 m~2/g and 0. 29 mL/g. We proposed a viewpoint: Al~(3+) might insert among the interspace of fluorite structure or highly dispersal in solid solutions.