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One-Pot Room-Temperature Synthesis of Mg Containing MCM-41 Mesoporous Silica for Aldol Reactions

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Title: One-Pot Room-Temperature Synthesis of Mg Containing MCM-41 Mesoporous Silica for Aldol Reactions
Authors: Fujita, Shin-Ichiro Browse this author →KAKEN DB
Segawa, Shinji Browse this author
Kawashima, Kazuki Browse this author
Nie, Xuejing Browse this author
Erata, Tomoki Browse this author
Arai, Masahiko Browse this author
Keywords: Aldol condensation
Solid base catalyst
Mg incorporated mesoporous silica
Magic angle spinning nuclear magnetic resonance
Issue Date: Dec-2018
Publisher: Elsevier
Journal Title: Journal of materials science & technology
Volume: 34
Issue: 12
Start Page: 2521
End Page: 2528
Publisher DOI: 10.1016/j.jmst.2016.08.025
Abstract: One-pot synthesis of Mg containing MCM-41 (Mg-MCM-41) materials was respectively carried out by a room temperature (RT) method and a hydrothermal (HT) method for aldol condensation of 4-nitrobenzaldehyde and acetone and self-condensation of acetone. The RT method can prepare MCM-41 materials containing large amounts of Mg while maintaining the structural characteristics of MCM-41 even at very low Si/Mg ratios (large Mg loadings), but the HT method cannot. The RT method can also give more active catalysts than the HT method, because the catalysts prepared by the RT method are more basic than those prepared by the HT one. The characterization indicates that Mg atoms in the Mg-MCM-41 prepared by the RT method exist as MgO disperses well on the wall surface of pores, while those in Mg-MCM-41 prepared by the HT method are included in the bulk with a smectite-like structure. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Rights: © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤田 進一郎

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