Modified-EISA synthesis of mesoporous high surface area CeO2 and catalytic property for CO oxidation
来源期刊：Journal of Rare Earths2009年第6期
论文作者：李霞章 陈丰 陆晓旺 倪超英 陈志刚
文章页码：943 - 947
摘 要：Mesoporous CeO2 particles with high surface area were synthesized using a modified evaporation-induced self assembly（EISA） method which combined citric acid as complexing agent.As-prepared powder and further thermal treatment samples were characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,selected area electron diffraction（SAED）,Fourier transform infrared spectrometer（FTIR）,thermogravimetry and differential thermal analysis（TG-DTA）,Brunauer-Emmett-Teller（BET） and Barrett-Joyner-Halenda（BJH） method.It was found that the cerium oxide/surfactant mixture gave rise to pure and fluorite-structured CeO2 after calcination at 573 K.Moreover,the textural analysis revealed high specific surface area（205 m2/g） and mesoporous structure of the sample.The catalytic performances of mesoporous CeO2 heated at different temperatures for CO oxidation were examined.The catalytic tests exhibited that the product had enhanced catalytic efficiency compared with the decomposed ceria.
李霞章1，陈丰2，陆晓旺2，倪超英3，陈志刚2
1. School of Materials Science and Engineering,Jiangsu University2. School of Materials Science and Engineering,Jiangsu Polytechnic University3. Department of Materials Science and Engineering,University of Delaware
摘 要：Mesoporous CeO2 particles with high surface area were synthesized using a modified evaporation-induced self assembly（EISA） method which combined citric acid as complexing agent.As-prepared powder and further thermal treatment samples were characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,selected area electron diffraction（SAED）,Fourier transform infrared spectrometer（FTIR）,thermogravimetry and differential thermal analysis（TG-DTA）,Brunauer-Emmett-Teller（BET） and Barrett-Joyner-Halenda（BJH） method.It was found that the cerium oxide/surfactant mixture gave rise to pure and fluorite-structured CeO2 after calcination at 573 K.Moreover,the textural analysis revealed high specific surface area（205 m2/g） and mesoporous structure of the sample.The catalytic performances of mesoporous CeO2 heated at different temperatures for CO oxidation were examined.The catalytic tests exhibited that the product had enhanced catalytic efficiency compared with the decomposed ceria.
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