| 沉淀法制备介孔二氧化铈 |
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| 引用本文： | 谭宁会,刘应亮,徐丽.沉淀法制备介孔二氧化铈[J].暨南大学学报,2010,31(1). |
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| 作者姓名： | 谭宁会 刘应亮 徐丽 |
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| 作者单位： | 暨南大学化学系,纳米化学研究所,广东,广州,510632 |
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| 基金项目： | 广东省自然科学基金团队项目(05200555) |
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| 摘 要： | 以硫酸高铈、二乙烯三胺为原料,氨水做沉淀剂,合成了具有立方萤石晶相结构的介孔二氧化铈(CeO2),讨论了反应物配比、反应温度、氨水的加入量等实验条件对介孔CeO2比表面积的影响.通过X射线衍射、BET孔径性能测试等分析手段对产物进行了表征,实验结果表明:在硫酸高铈与二乙烯三胺的摩尔比为1∶2,反应温度为80℃,陈化时间为12 h的条件下,制得了比表面积为157 m2/g的介孔CeO2.
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| 关 键 词： | 介孔二氧化铈 沉淀法 比表面积 |
Preparation of mesoporous CeO_2 by precipitation method |
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| TAN Ning-hui,LIU Ying-liang,XU Li.Preparation of mesoporous CeO_2 by precipitation method[J].Journal of Jinan University(Natural Science & Medicine Edition),2010,31(1). |
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| Authors: | TAN Ning-hui LIU Ying-liang XU Li |
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| Institution: | Department of Chemistry;Nanochemistry Institute;Jinan University;Guangzhou 510632;China |
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| Abstract: | Mesoporous CeO2 powder with crystalline pore walls and cubic fluorite structure was synthesized by chemical precipitation method using ceric sulfate tetrahydrate and diethylenetriamine as raw materials and ammonia as precipitant.The effects of several factors,such as the mole ratio of reactants,reaction temperature and volume of ammonia,on specific surface area were investigated.X-ray diffractometry(XRD) and BET method were used to analyze and characterize the products.The results showed that mesoporous CeO... |
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| Keywords: | mesoporous CeO2 precipitation method specific surface area |
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