TY - JOUR
T1 - Transport of liquid and supercritical CO2 and selected organic solvents through surface modified mesoporous γ-alumina and titania membranes
AU - Hossain, Tashfin
AU - Bothun, Geoffrey D.
AU - Ilias, Shamsuddin
PY - 2019/9/2
Y1 - 2019/9/2
N2 - The permeation of liquid and supercritical CO2 and the organic solvents toluene, heptane, and 1-propanol were investigated in unmodified hydrophilic and modified hydrophobic mesoporous γ-alumina and titania tubular ceramic membranes. These ceramic membranes are solvent resistant, thermally stable, and hydrophilic in nature. Viscosity-corrected solvent flux was used to evaluate the applicability of Darcy’s law, which is governed by convective transport. The permeability coefficients were dependent on solvent type due to unique solvent–membrane interactions, which is a deviation from Darcy’s law. Surface chemistry of modified membranes was evaluated using contact angle measurements, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, and Energy Dispersive X-ray Spectroscopy.
AB - The permeation of liquid and supercritical CO2 and the organic solvents toluene, heptane, and 1-propanol were investigated in unmodified hydrophilic and modified hydrophobic mesoporous γ-alumina and titania tubular ceramic membranes. These ceramic membranes are solvent resistant, thermally stable, and hydrophilic in nature. Viscosity-corrected solvent flux was used to evaluate the applicability of Darcy’s law, which is governed by convective transport. The permeability coefficients were dependent on solvent type due to unique solvent–membrane interactions, which is a deviation from Darcy’s law. Surface chemistry of modified membranes was evaluated using contact angle measurements, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, and Energy Dispersive X-ray Spectroscopy.
KW - ceramic membrane
KW - Darcy’s law
KW - Liquid and supercritical CO2
KW - organosilane
KW - solvent transport
KW - surface modification
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85063906340&origin=inward
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U2 - 10.1080/01496395.2019.1594901
DO - 10.1080/01496395.2019.1594901
M3 - Article
SN - 0149-6395
VL - 54
SP - 2098
EP - 2111
JO - Separation Science and Technology (Philadelphia)
JF - Separation Science and Technology (Philadelphia)
IS - 13
ER -