文献类型：期刊文献

英文题名：A simple co-impregnation route to load highly dispersed Fe(III) centers into the pore structure of SBA-15 and the extraordinarily high catalytic performance

作者：Li, Yongsheng[1];Chen, Yong[1];Li, Liang[1];Gu, Jinlou[1];Zhao, Wenru[1];Li, Lei[2];Shi, Jianlin[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

年份：2009

卷号：366

期号：1

起止页码：57

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20093312257642);WOS:【SCI-EXPANDED(收录号:WOS:000269758400007)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant No. 20633090), the National Hi-Tech Project of China (Grant No. 2007AA03Z317), Shanghai Natural Science Foundation (Grant No. 07ZR14028) and Shanghai Pujiang Program (Grant No. 08PJ1403500). We thank Dr. Wenhua Zhang (Dalian Institute of Chemical Physics, CAS) and Dr. Zhicheng Liu (Shanghai Research Institute of Petrochemical Technology) for NH3-TPD measurements and fruitful discussion.

语种：英文

外文关键词：SBA-15; High dispersivity; Iron oxide; Incipient wetness impregnation; Catalytic activity

摘要：Highly dispersed iron centers supported on SBA-15 were successfully prepared via a simple incipient wetness co-impregnation route by casting furfuryl alcohol (FA) solution of iron (111) acetylacetonate (Fe(acac)(3)), which were used as carbon and iron sources, respectively, into the pore structure of SBA-15, followed by the subsequent removal of carbonized FA. Various techniques such as XRD, TEM, N-2 sorption, UV-vis, XPS and EPR, were employed to characterize the prepared catalysts. It was shown that both Fe2O3 nanoclusters and isolated iron species were present and highly dispersed onto the pore surface of SBA-15. due to the presence of abundant carbon source co-impregnated, with well-maintained, highly ordered and open mesoporous structure. A great number of acidities was introduced by the loading of Fe2O3, and the catalytic performance was tested on the Friedel-Crafts benzylation of benzene by benzyl chloride. Under the optimized reaction condition, the catalyst showed a superior catalytic performance with a 100% yield of monoalkylated product within 1.5 min at 60 degrees C. The catalyst demonstrated high reusability and stability, the yield of diphenyl methane was still higher than 90% after 6 runs. Moreover, the catalyst was still active at the temperatureas low as 40 degrees C. Such a strategy is verified applicable to prepare other well-dispersed metal oxides, i.e. MnxOy loaded into the pore structure of mesoporous materials. (C) 2009 Elsevier B.V. All rights reserved.