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ID 15019
file
creator
Kan-no, Takehiro
Asaeda, Masashi
subject
titanium oxide, photocatalysis
catalytic membrane reactor
methanol
platinum
photo-deposition
NDC
Chemistry
abstract
Porous titanium oxide membranes with pore sizes in the range of 2.5-22 nm were prepared by a sol-gel procedure, and were applied for decomposition of methanol and ethanol as model volatile organic compounds (VOCs) in a photocatalytic membrane reactor, where oxidation reaction occurs both on the surface and inside the porous TiO2 membrane while reactants are permeating via one-pass flow. Methanol was completely photo-oxidized by black-light irradiation to CO2 when methanol at a concentration of 100 ppm was used at a feed flow rate of 500 × 10-6 m3/min, but the conversion decreased when the MeOH concentration in the feed was increased. Pt-modification was carried out by photo-deposition, and led to a decrease in pore diameter. Using Pt-modified membranes, a nearly complete oxidation of methanol up to 10,000 ppm at a feed flow rate of 500 × 10-6 m3/min was observed. Thus, such membranes would be effective for purifying a permeate stream after one-pass permeation through the TiO2 membranes. The decomposition of ethanol is also discussed.
journal title
Journal of Membrane Science
volume
Volume 280
issue
Issue 1-2
start page
156
end page
162
date of issued
2006-09
publisher
Elsevier B.V.
issn
0376-7388
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2006 2006 Elsevier B.V.
relation is version of URL
http://dx.doi.org/10.1016/j.memsci.2006.01.008
department
Graduate School of Engineering