Is Physisorption Useful for Fine Pore Structure Control? Control of Pore Structure and Properties of SBA-15 by Paraffin Physisorption
A simple method for controlling the pore structure and properties of ordered mesoporous silica (OMS) by the physisorption of organic molecules is reported. The paraffin-modified OMSs were characterized by N2 gas and water vapor adsorption isotherms, small-angle X-ray scattering, and infrared spectro...
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Veröffentlicht in: | Chemistry letters 2018-01, Vol.47 (1), p.27-30 |
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creator | Uchida, Taro Deguchi, Minoru Asakura, Keisuke Ozeki, Sumio Iiyama, Taku |
description | A simple method for controlling the pore structure and properties of ordered mesoporous silica (OMS) by the physisorption of organic molecules is reported. The paraffin-modified OMSs were characterized by N2 gas and water vapor adsorption isotherms, small-angle X-ray scattering, and infrared spectroscopy. We found that paraffin first adsorbed on the pore surface defects, resulting in a smooth OMS pore surface; thus, the paraffin controlled the pore structure. In addition, the surface hydrophobicity increased with increasing paraffin filling fraction. |
doi_str_mv | 10.1246/cl.170873 |
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source | Oxford University Press Journals All Titles (1996-Current) |
subjects | Hydrophobicity Organic chemistry Paraffins Porosity Silicon dioxide Small angle X ray scattering Surface defects Water vapor |
title | Is Physisorption Useful for Fine Pore Structure Control? Control of Pore Structure and Properties of SBA-15 by Paraffin Physisorption |
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