文献类型：期刊文献

英文题名：Generalized and high temperature synthesis of a series of crystalline mesoporous metal oxides based nanocomposites with enhanced catalytic activities for benzene combustion

作者：Liu, Fujian[1,2];Zuo, Shufeng[1];Xia, Xiaodan[1];Sun, Jing[3,4];Zou, Yongcun[3,4];Wang, Liang[3,4];Li, Chunguang[3,4];Qi, Chenze[1]

机构：[1]Shaoxing Univ, Key Lab Alternat Technol Fine Chem Proc Zhejiang, Shaoxing 312000, Peoples R China;[2]Zhejiang Univ, Dept Chem, Key Lab Appl Chem Zhejiang Prov, Hangzhou 310007, Zhejiang, Peoples R China;[3]Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China;[4]Jilin Univ, Coll Chem, Changchun 130012, Peoples R China

年份：2013

卷号：1

期号：12

起止页码：4089

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：SCI-EXPANDED(收录号：WOS:000315356500035)、、EI(收录号：20131816289429)、Scopus(收录号：2-s2.0-84876561097)、WOS

基金：This work was supported by the National Natural Science Foundation of China (21203122), the Foundation of Science and Technology of Shaoxing Bureau (2012B70018) and the Post-doctoral Foundation of China (2012M520062).

语种：英文

外文关键词：Alumina - Aluminum oxide - Benzene - Catalyst activity - Catalytic oxidation - Cerium oxide - Crystallinity - Hematite - Hydrothermal synthesis - Manganese oxide - Mesoporous materials - Morphology - Pore size - Titanium dioxide - Transition metals - Zirconia

外文摘要：We report here a generalized synthesis of various crystalline mesoporous metal oxides including CeO2, Cr2O3, Fe2O3, SnO2, Ce0.5Zr0.5O2, TiO2, Al2O3 and ZrO2 from the self-assembly of a basic poly 4-vinylpyridine (P4VP) template with various metal precursors based on their strong acid-base interaction under high temperature (180 degrees C) hydrothermal conditions. Using the typically crystalline mesoporous metal oxide of CeO2, after removing the template by calcination at 550 degrees C and loading with various transition metal oxides such as MnOx, various transition metal oxide functionalized crystalline mesoporous CeO2 (MnOx/P4VP-CeO2) were obtained. X-ray diffraction (XRD) patterns show that the resulting mesoporous metal oxides exhibit a high degree of crystallinity, and the transition metal oxides active sites have been successfully loaded into these samples. N-2 sorption-desorption isotherms, SEM images show that the resulting crystalline mesoporous metal oxides, such as CeO2, have a large BET surface area (94 m(2) g(-1)) and abundant mesopores, which exhibit monolithic morphology with crystal sizes ranging from 5 to 15 mm, giving a uniform pore size centered at 5 nm. XPS spectra show that the active sites such as MnOx exhibit the phases of MnO2 and Mn2O3 in P4VP-CeO2. H-2-TPR curves show that MnOx/P4VP-CeO2 exhibits decreased reductive temperatures of both active sites of the MnOx and P4VP-CeO2 supporter when compared with the samples reported previously. More importantly, MnOx/P4VP-CeO2 exhibits much better catalytic activities and good recyclability for catalyzing the oxidation of benzene than that of MnOx loaded commercially crystalline CeO2, which will be very important for their wide applications for VOCs removal in industry.