Abstract
Surface-modified mesoporous silica nanoparticle (MSN) with methyl groups was used to enhance the CH4-water volumetric mass transfer coefficient (k L a) 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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This article is dedicated to Prof. Hwayong Kim on the occasion of his retirement from Seoul National Univerisity.
The authors contributed equally in this work.
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Lee, SY., Mo, KS., Choi, JH. et al. Enhancement of CH4-water mass transfer using methyl-modified mesoporous silica nanoparticles. Korean J. Chem. Eng. 32, 1744–1748 (2015). https://doi.org/10.1007/s11814-014-0383-x
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DOI: https://doi.org/10.1007/s11814-014-0383-x