Post-synthesis of Thick Wall Mesoporous Silica with Wormhole Framework Structure Using Surfactant Micelles and Silica Source Incorporated Inside the Channels of Silica Precursor with Large-mesopores
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概要
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Thick wall mesoporous silica molecular sieves with wormhole pore structure (MPS-TW) were prepared post-synthetically using cetyltrimethyammonium bromide (CTMABr) surfactant micelle solution and tetratethyl orthosilicate (TEOS) incorporated inside the channels of large-pore mesoporus silica (LP-MPS), followed by hydrolysis/condensation of TEOS. XRD spectra, N2 adsorption isotherms and TEM images of the resultant materials exhibited that average wall thickness of the materials increased in the range of 1.2-2.2 nm, depending on the preparation conditions in the present study. It was found that molar ratio of CTMABr to TEOS as well as volume ratio of the micelle solution to the total pore volume of LP-MPS were key parameters affecting the wall thickness of MPS-TW samples.
著者
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Ozawa Sentaro
Department Of Engineering In Applied Chemistry Faculty Of Engineering And Resource Science Akita Uni
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Shindo Takayoshi
Department Of Engineering In Applied Chemistry Faculty Of Engineering And Resource Science Akita Uni
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Ikeuchi Takao
Department Of Engineering In Applied Chemistry Graduate School Of Engineering And Resource Science A
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IKEUCHI Takao
Department of Engineering in Applied Chemistry,Graduate School of Engineering and Resource Science, Akita University
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NAKAZAWA Yuta
Department of Engineering in Applied Chemistry,Graduate School of Engineering and Resource Science, Akita University
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SHIMA Kaoru
Department of Engineering in Applied Chemistry,Graduate School of Engineering and Resource Science, Akita University
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OZAWA Sentaro
Department of Engineering in Applied Chemistry,Graduate School of Engineering and Resource Science, Akita University
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Ozawa Sentaro
Department of Chemical Engineering, Faculty of Engineering, Tohoku University
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