| 生物模板剂合成介孔氧化铈及其催化性能 |
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| 引用本文： | 刘成宝,陈丰,何凤娟,郑道光,马凯悦,陈志刚.生物模板剂合成介孔氧化铈及其催化性能[J].苏州科技学院学报(自然科学版),2013(4):43-46,70. |
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| 作者姓名： | 刘成宝 陈丰 何凤娟 郑道光 马凯悦 陈志刚 |
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| 作者单位： | [1]苏州科技学院化学生物与材料工程学院,江苏苏州215009 [2]江苏省环境功能材料重点实验室,江苏苏州215009 |
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| 基金项目： | 国家自然科学基金资助项目（21071107;21277094;21103119）;苏州市应用基础研究计划项目（SYG201242;SYG201316）;江苏省自然科学基金-青年基金项目（BK2012167）;江苏省研究生科研创新计划项目（856 and CXZZ13_0855） |
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| 摘 要： | 以无污染简单易得的天然材料壳聚糖为模板剂合成介孔氧化铈材料,并研究了材料的结构和催化性能.介孔Ce02的孔道结构由直径为5-8 nm的颗粒堆积形成,孔道孔径分布较为均匀,集中在5-10 nm,材料的比表面积约为102 m^2·g^-1.与氧化铈参比样相比,介孔氧化铈具有更好的氧化能力和催化活性,因为材料高比表面积导致了更多活性位点的暴露和表面活性氧的增多.介孔氧化铈的%T50转化率为50％时的温度点）约为300℃,远低于亚微米参比样的430℃.
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| 关 键 词： | 介孔 氧化铈 生物模板 催化性能 |
Synthesis of mesoporous cerium oxide materials by biological template agent and its catalytic performance |
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| LIU Chengbao,CHEN Feng,HE Fengjuan,ZHENG Daoguang,MA Kaiyue,CHEN Zhigang.Synthesis of mesoporous cerium oxide materials by biological template agent and its catalytic performance[J].Journal of University of Science and Technology of Suzhou,2013(4):43-46,70. |
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| Authors: | LIU Chengbao CHEN Feng HE Fengjuan ZHENG Daoguang MA Kaiyue CHEN Zhigang |
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| Institution: | 1.School of Chemistry Biology and Material Engineering,SUST,Suzhou 215009 ,China;2.Jiangsu Key Laboratory for Environment Functional Materials,Suzhou 215009, China) |
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| Abstract: | In this paper, we have synthesized Mesoporous CeO2 with the natural pollution-free chitosan as bio- logical template agent, and studied its structure and catalytic performance. Mesoporous samples are found consisting of nanocrystalline eeria with grain diameter about 5-8 nm and the uniform pore size around 5 to 10 nm. Their specific surface area is about 102 m2·g1. Compared with cerium oxide, mesoporous ceria has better ability of oxidation and catalytic activity, because its high surface area leads to more active sites on the surface and the increase of reactive oxygen species. Tso （conversion rate of 50%） of mesoporous cerium oxide is about 300 ℃, far lower than that of submicron 430 ℃. |
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| Keywords: | mesoporous ceria biological template catalytic performance |
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