Citation: Zhi Qi Jia, Ming Zhao, Chun Guang Gao, Yong Xiang Zhao. Effect of surface acidity and pore size of Al-substituted plugs-containing SBA-15 and MCM-41 silicas on the polymerization of THF[J]. Chinese Chemical Letters, ;2011, 22(1): 105-108. doi: 10.1016/j.cclet.2010.09.007 shu

Effect of surface acidity and pore size of Al-substituted plugs-containing SBA-15 and MCM-41 silicas on the polymerization of THF

School of Chemistry and Chemical Engineering, Shanxi University, Engineering Research Center for Fine Chemicals of Ministry of Education, Taiyuan 030006, China

Received Date: 4 May 2010

Fund Project: This work was supported by Science Foundation of China (No.20573071) and Key Scientific and Technological Projects of Shanxi Province (No.20090321059).

We reported here the simultaneous influence of surface acidity and pore size of Al-substituted hexagonal mesoporous silicas (Aldoped plugs-containing SBA-15 and Al-doped MCM-41) on polymerization of THF.These materials were directly synthesized by introduced aluminum isopropoxide into reaction mixture including surfactant and siliceous precursor.Al-doped plugs-containing SBA-15 (denotes as PAS) samples not only possess typical two-step desorption isotherms, which implied PAS materials generated plugs in their mesochannel, but also exhibit larger pore size and thicker wall than that of Al-doped MCM-41 (denotes as ACM), which implied PAS would have a great advantage on catalytic reaction involving large molecular (e.g.polymer of TI-IF) in industrial point'of view.To investigate catalytic activity of PAS and ACM with moderate acidic sites the polymerization of THF in the presence of acetic anhydride was carded out.The results showed PAS exhibiting good performance on polymerization of THF.Such result could be related to the large pore size and moderate acidic sites.
- Hexagonal mesostructure,
- Polymerization,
- THF,
- Acidity,
- Pore size
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