Issue 32, 2013
From the journal:

Physical Chemistry Chemical Physics

Preparation of aluminum-containing mesoporous silica with hierarchical macroporous architecture and its enhanced catalytic activities†

Takashi Kamegawa,a   Shota Tanaka,a   Hiroki Seto,a   Dayang Zhoub  and  Hiromi Yamashita*ac  

* Corresponding authors

a Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
E-mail: yamashita@mat.eng.osaka-u.ac.jp
Fax: +81-6-6879-7460
Tel: +81-6-6879-7457

b The Institute of Scientific and Industrial Research (ISIR), Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan

c Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan

Abstract

Aluminum-containing mesoporous silica with hierarchical macroporous architecture (Al-MMS) was successfully prepared using a solvent evaporation method through the combination of precursor solution for synthesis of Al-containing mesoporous silica (Al-MS) and poly(methyl methacrylate) (PMMA) colloidal crystals as a hard template. The porous structure and the state of aluminum were investigated using various characterization techniques. The construction of combined structure of Al-MMS, i.e., hierarchical macroporous architecture consisting of thin mesoporous silica frameworks, led to the formation of many mesopore entrances and the shortening of the mesoporous channels. In the tetrahydropyranylation of linear alcohols with dihydropyran (DHP), Al-MMS exhibited higher catalytic activities for the formation of corresponding tetrahydropyranyl ethers as compared to Al-MS. The advantageous structure of Al-MMS enables the efficient transport of reactants to the catalytically active sites, which realizes the significant enhancement of catalytic performances in the reaction of DHP with alcohols having longer alkyl chains.

Graphical abstract: Preparation of aluminum-containing mesoporous silica with hierarchical macroporous architecture and its enhanced catalytic activities

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Article information

DOI
https://doi.org/10.1039/C3CP51022K
Article type
Paper
Submitted
08 Mar 2013
Accepted
16 May 2013
First published
17 May 2013

Phys. Chem. Chem. Phys., 2013,15, 13323-13328

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Preparation of aluminum-containing mesoporous silica with hierarchical macroporous architecture and its enhanced catalytic activities

T. Kamegawa, S. Tanaka, H. Seto, D. Zhou and H. Yamashita, Phys. Chem. Chem. Phys., 2013, 15, 13323 DOI: 10.1039/C3CP51022K

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