Hydrogen production using a platinum modified TiO2 photocatalyst and an organic scavenger. Kinetic modeling

Salvador Escobedo; Benito Serrano; Alan Calzada; Jesús Moreira; Hugo De Lasa

doi:10.1016/j.fuel.2016.04.081

Hydrogen production using a platinum modified TiO₂ photocatalyst and an organic scavenger. Kinetic modeling

Salvador Escobedo, Benito Serrano, Alan Calzada, Jesús Moreira, Hugo De Lasa

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	438-449
Number of pages	12
Journal	Fuel
Volume	181
DOIs	https://doi.org/10.1016/j.fuel.2016.04.081
State	Published - 1 Oct 2016
Externally published	Yes

Keywords

Hydrogen
Langmuir-Hinshelwood kinetic modeling
Near-UV light
Photo-CREC water II reactor
Reaction network
TiO-Pt photocatalyst

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.fuel.2016.04.081

Cite this

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title = "Hydrogen production using a platinum modified TiO2 photocatalyst and an organic scavenger. Kinetic modeling",

abstract = "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.",

keywords = "Hydrogen, Langmuir-Hinshelwood kinetic modeling, Near-UV light, Photo-CREC water II reactor, Reaction network, TiO-Pt photocatalyst",

author = "Salvador Escobedo and Benito Serrano and Alan Calzada and Jes{\'u}s Moreira and {De Lasa}, Hugo",

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T1 - Hydrogen production using a platinum modified TiO2 photocatalyst and an organic scavenger. Kinetic modeling

AU - Escobedo, Salvador

AU - Serrano, Benito

AU - Calzada, Alan

AU - Moreira, Jesús

AU - De Lasa, Hugo

PY - 2016/10/1

Y1 - 2016/10/1

N2 - 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.

AB - 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.

KW - Hydrogen

KW - Langmuir-Hinshelwood kinetic modeling

KW - Near-UV light

KW - Photo-CREC water II reactor

KW - Reaction network

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