Escobedo, Salvador; Serrano Rosales, Benito; Calzada, Alan; Moreira, Jesús; de Lasa, Hugo
Resumen:
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 H2 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.