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Effects of ceria/zirconia ratio on properties of mixed CeO_2-ZrO_2-Al_2O_3 compound |
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| Authors: | LI Hongmei ZHU Qingchao LI Yile GONG Maochu CHEN Yongdong WANG Jianli CHEN Yaoqiang |
| Affiliation: | Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University |
| Abstract: | A series of CexZr0.50-xAl0.50O1.75(0.05≤x≤0.45) mixed oxides with different Ce/Zr ratio were prepared by co-precipitation method and characterized by means of X-ray diffraction(XRD),Brunauer-Emmet Teller method(BET),temperature-programmed reduction(H2-TPR) and oxygen pulsing technique.The XRD results showed that all samples kept the single CeO2 cubic fluorite structure after calcination at 600 and 1000 oC for 5 h.The results of BET revealed that CexZr0.50-xAl0.50O1.75 with Ce/Zr molar ratio 1/1 exhibited hi... |
| Keywords: | oxygen storage material thermal stability co-precipitation oxygen storage capacity (OSC) Ce atom utilization ratio rare earths |
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