文献类型：期刊文献

英文题名：Synthesis of a hierarchically macro-/mesoporous zeolite based on a micro-emulsion mechanism

作者：Li, Hua[1,2];Jin, Junjiang[1];Wu, Wei[1,3];Chen, Chongcheng[3];Li, Liang[1];Li, Yongshen[1];Zhao, Wenru[1];Gu, Jinlou[1];Chen, Guorong[1];Shi, Jian-lin[1,3]

机构：[1]E China Univ Sci & Technol, Shanghai 200050, Peoples R China;[2]Soochow Univ, Coll Chem Chem Engn & Mat Sci, Dept Inorgan Mat, Suzhou 215123, Peoples R China;[3]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

年份：2011

卷号：21

期号：48

起止页码：19395

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY

收录：;EI(收录号：20114914574592);WOS:【SCI-EXPANDED(收录号:WOS:000297559400029)】；

基金：This work was supported by the National Natural Science Foundation of China (grant No. 21073059), the Fundamental Research Funds for the Central Universities (grant No. WK1013001) and the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT0825).

语种：英文

外文关键词：Pore size - Emulsification - Zeolites

摘要：A new type of hierarchically porous ZSM-5-type zeolite, Hp-ZSM, with well defined macro-/meso-/microporous structures was facilely synthesized via a simple steam-assisted conversion route in the presence of ethanol. This novel material exhibits a tri-modal porous structure: a macroporous network with macropore sizes of 50-200 nm; a well defined mesoporous structure of pore size around 2.5 nm in the macroporous framework and a typical microporous ZSM-5 structure in the mesoporous framework. A micro-emulsion mechanism was proposed for the formation of the macroporosity where ethanol is assumed to form 'oil' droplets in the water phase in the presence of surfactants.