文献类型：期刊文献

英文题名：Mechanism of CeO2 synthesized by thermal decomposition of Ce-MOF and its performance of benzene catalytic combustion

作者：Zheng, Jie[1];Wang, Zhuo[1];Chen, Zhu[1];Zuo, Shufeng[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China

年份：2021

卷号：39

期号：7

起止页码：790

外文期刊名：JOURNAL OF RARE EARTHS

收录：SCI-EXPANDED(收录号：WOS:000661418700007)、、EI(收录号：20204409434686)、Scopus(收录号：2-s2.0-85094613639)、WOS

基金：Project supported by Zhejiang Public Welfare Technology Research Project (LGG19B070003) , the Foundation of Science and Technology of the Shaoxing City (2018C10019) and the National Natural Science Foundation of China (21577094) .

语种：英文

外文关键词：Thermal decomposition; Ce-MOF; Mechanism; Structure-effect relationship; Benzene; Catalytic combustion

外文摘要：In this paper, the formation mechanism of mesoporous CeO2 synthesized by thermal decomposition of Ce-MOF and its performance of benzene catalytic combustion, as well as the structure-activity relationship between them were studied in depth. The self-assembly process and physicochemical properties of CeO2 were characterized by thermogravimetry analysis, powder X-ray diffraction, N2 adsorption/ desorption, high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy techniques. Characterization results show that Ce-MOF is completely decomposed into pure mesoporous CeO2 when the decomposition temperature is higher than 400 degrees C. At this threshold temperature, CeO2 (400) has the largest specific surface area and pore volume of 114 m2/g and 0.152 cm3/g, respectively. CeO2 (400) exhibits very high catalytic activity for benzene combustion, which can completely catalyze the degradation of benzene at 260 degrees C. Meanwhile, the mesoporous CeO2 (400) supported Pt nanocrystalline catalysts were prepared by high temperature solution-phase reduction method. Pt/CeO2 (400) can completely degrade benzene at about 200 degrees C and represents high durability and good waterresistance for benzene combustion during 100 h of continuous reaction. (c) 2020 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.