Journal
FUEL
Volume 181, Issue -, Pages 438-449Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2016.04.081
Keywords
Near-UV light; TiO2-Pt photocatalyst; Photo-CREC water II reactor; Hydrogen; Reaction network; Langmuir-Hinshelwood kinetic modeling
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Funding
- Consejo Nacional de Ciencia y Tecnologia - Mexico (CONACyT), Mexico
- Natural Sciences and Engineering Research Council of Canada
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This contribution reports the kinetics of the photocatalytic production of hydrogen using a modified DP25 (TiO2)-1 wt% Pt and ethanol as an organic scavenger. This study is carried out in a Photo-CREC water II Reactor with a specially designed H-2 collector tank. Experiments are developed under the following conditions: (a) An optimum photocatalyst loading, (b) Near-UV irradiation, (c) An acid pH and (d) Using ethanol as an organic scavenger. This research considers an In Series-Parallel kinetics to describe the photocatalytic conversion of ethanol (the organic scavenger) and of other carbon containing product species. Rate equations considered are of the Langmuir-Hinshelwood type leading to a set of ordinary differential equations. Furthermore, it is observed that hydrogen formation is a near zero order reaction. Regression analyses are used to calculate kinetic parameters with a cross-correlation matrix and 95% confidence intervals. (C) 2016 Elsevier Ltd. All rights reserved.
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