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Received October 31, 2014
Accepted December 20, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Enhancement of CH4-water mass transfer using methyl-modified mesoporous silica nanoparticles
Department of Chemical & Biomolecular Engineering, Sogang University, Seoul 121-742, Korea 1Department of Chemistry, Sogang University, Seoul 121-742, Korea 2Department of Chemical Engineering, Hankyong National University, Gyeonggi-do 456-749, Korea
bkoh@sogang.ac.kr
Korean Journal of Chemical Engineering, September 2015, 32(9), 1744-1748(5), 10.1007/s11814-014-0383-x
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Abstract
Surface-modified mesoporous silica nanoparticle (MSN) with methyl groups was used to enhance the CH4-water volumetric mass transfer coefficient (kLa) and the solubility of CH4 in water. Two types of samples were tested: unmodified MSN and methyl-modified MSN. The mass transfer for each type of sample was measured every 20 s by gas chromatography. The results showed that the methyl-modified MSN, which have both hydrophobic and hydrophilic properties on the surface, exhibited higher CH4-water volumetric mass transfer coefficient and solubility in water. The dissolved concentrations of CH4 were enhanced by 10.7% and 27.8%, and the volumetric mass transfer coefficient were enhanced by 28.6% and 84.7%, respectively, by using unmodified MSN and methyl-modified MSN.
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References
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