Abstract
Photocatalytic oxidation of ethylene was carried out over a TiO2 catalyst at 295K using two types of non-ideal fixed-bed flow reactors: a rectangular reactor and a cylindrical reactor. Computational fluid dynamics (CFD) analysis using a low Reynolds number-type k-ε turbulence model was conducted to investigate the ethylene oxidation behavior in the reactors at various gas flow rates and ethylene concentrations in the inlet gas (ethylene concentration of 50-250ppm and gas flow rate of 50-250mL/min). In the rectangular reactor, steady-state activities were obtained for ethylene oxidation under all conditions. The rate of ethylene oxidation on the TiO2 surface was analyzed in terms of Langmuir-Hinshelwood (L-H) type kinetics. The kinetic parameters for the surface reactions obtained via CFD analysis fit well with the experimental data. The CFD analysis also revealed that the ethylene concentration distribution in the reactor depended on the gas residence time distribution. We also carried out CFD analysis for the cylindrical reactor and compared the ethylene oxidation behavior with that in the rectangular reactor.
| Original language | English |
|---|---|
| Pages (from-to) | 325-335 |
| Number of pages | 11 |
| Journal | Chemical Engineering Journal |
| Volume | 263 |
| DOIs | |
| Publication status | Published - Mar 1 2015 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
Kinetic analysis of TiO2-catalyzed heterogeneous photocatalytic oxidation of ethylene using computational fluid dynamics. / Einaga, Hisahiro; Tokura, Junya; Teraoka, Yasutake; Ito, Kazuhide.
In: Chemical Engineering Journal, Vol. 263, 01.03.2015, p. 325-335.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Kinetic analysis of TiO2-catalyzed heterogeneous photocatalytic oxidation of ethylene using computational fluid dynamics
AU - Einaga, Hisahiro
AU - Tokura, Junya
AU - Teraoka, Yasutake
AU - Ito, Kazuhide
PY - 2015/3/1
Y1 - 2015/3/1
N2 - Photocatalytic oxidation of ethylene was carried out over a TiO2 catalyst at 295K using two types of non-ideal fixed-bed flow reactors: a rectangular reactor and a cylindrical reactor. Computational fluid dynamics (CFD) analysis using a low Reynolds number-type k-ε turbulence model was conducted to investigate the ethylene oxidation behavior in the reactors at various gas flow rates and ethylene concentrations in the inlet gas (ethylene concentration of 50-250ppm and gas flow rate of 50-250mL/min). In the rectangular reactor, steady-state activities were obtained for ethylene oxidation under all conditions. The rate of ethylene oxidation on the TiO2 surface was analyzed in terms of Langmuir-Hinshelwood (L-H) type kinetics. The kinetic parameters for the surface reactions obtained via CFD analysis fit well with the experimental data. The CFD analysis also revealed that the ethylene concentration distribution in the reactor depended on the gas residence time distribution. We also carried out CFD analysis for the cylindrical reactor and compared the ethylene oxidation behavior with that in the rectangular reactor.
AB - Photocatalytic oxidation of ethylene was carried out over a TiO2 catalyst at 295K using two types of non-ideal fixed-bed flow reactors: a rectangular reactor and a cylindrical reactor. Computational fluid dynamics (CFD) analysis using a low Reynolds number-type k-ε turbulence model was conducted to investigate the ethylene oxidation behavior in the reactors at various gas flow rates and ethylene concentrations in the inlet gas (ethylene concentration of 50-250ppm and gas flow rate of 50-250mL/min). In the rectangular reactor, steady-state activities were obtained for ethylene oxidation under all conditions. The rate of ethylene oxidation on the TiO2 surface was analyzed in terms of Langmuir-Hinshelwood (L-H) type kinetics. The kinetic parameters for the surface reactions obtained via CFD analysis fit well with the experimental data. The CFD analysis also revealed that the ethylene concentration distribution in the reactor depended on the gas residence time distribution. We also carried out CFD analysis for the cylindrical reactor and compared the ethylene oxidation behavior with that in the rectangular reactor.
UR - http://www.scopus.com/inward/record.url?scp=84912109701&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84912109701&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2014.11.017
DO - 10.1016/j.cej.2014.11.017
M3 - Article
VL - 263
SP - 325
EP - 335
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -