Oxidation of Toluene in Waste Gas Streams Using Mesoporous Ti-Hexagonal Mesoporous Silica
Publication: Journal of Environmental Engineering
Volume 130, Issue 3
Abstract
Various mesoporous catalysts with titanium loadings between 0.5 and 4 Ti wt. % and surface areas between 600 and 1,600 m2/g were synthesized using the molecular designed dispersion technique. These catalysts were tested using toluene oxidation in a fixed bed reactor at temperatures between 300 and 550°C. The reaction products were found to be and CO with selectivity towards above 80% for all catalysts. The catalytic activity of the catalysts increases with titanium loading. The total conversion at 550°C was not affected by the textural porosity, but increased textural porosity did significantly reduce the ignition temperature by up to 50°C. The Thiele modulus was calculated to be much less than one for all these materials indicating that the reaction rate is not diffusion limited.
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Information
Published In
Journal of Environmental Engineering
Volume 130 • Issue 3 • March 2004
Pages: 356 - 359
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Oct 7, 2002
Accepted: Jun 24, 2003
Published online: Feb 19, 2004
Published in print: Mar 2004
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