文献类型：期刊文献

英文题名：A Simple Route to Synthesize Mesoporous ZSM-5 Templated by Ammonium-Modified Chitosan

作者：Jin, Junjiang[1];Zhang, Xingdi[1];Li, Yongsheng[1];Li, Hua[1];Wu, Wei[2];Cui, Yunlong[1];Chen, Qian[1];Li, Liang[1];Gu, Jinlou[1];Zhao, Wenru[1];Shi, Jianlin[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：2012

卷号：18

期号：51

起止页码：16549

外文期刊名：CHEMISTRY-A EUROPEAN JOURNAL

收录：;EI(收录号：20125115809658);WOS:【SCI-EXPANDED(收录号:WOS:000312275200035)】；

基金：This work was financially supported by the National Basic Research Program of China (973 Program, 2012CB933602); Program for New Century Excellent Talents in University (NCET-10-0379); Scientific Innovation Project of Shanghai Municipal Education Commission (Grant No. 11ZZ53); The National Natural Science Foundation of China (Grant Nos. 51172070, 51132009), The Fundamental Research Funds for the Central Universities (Grant No. WD1114002 and WK1013001).

语种：英文

外文关键词：ammonium; chitosan; heterogeneous catalysis; self-assembly; zeolites

摘要：Uniform mesoporous zeolite ZSM-5 crystals have been successfully fabricated through a simple hydrothermal synthetic method by utilizing ammonium-modified chitosan and tetrapropylammonium hydroxide (TPAOH) as the meso- and microscale template, respectively. It was revealed that mesopores with diameters of 520 nm coexisted with microporous network within mesoporous ZSM-5 crystals. Ammonium-modified chitosan was demonstrated to serve as a mesoporogen, self-assembling with the zeolite precursor through strong static interactions. As expected, the prepared mesoporous ZSM-5 exhibited greatly enhanced catalytic activities compared with conventional ZSM-5 and Al-MCM-41 in reactions involving bulky molecules, such as the ClaisenSchmidt condensation of 2-hydroxyacetophenone with benzaldehyde and the esterification reaction of dodecanoic acid and 2-ethylhexanol.