Abstract
o-Xylene combustion in air over a Pt/γ-Al2O3 catalyst was investigated in a laboratory reactor at low concentrations typical for depollution applications. The results evidenced a slightly negative influence of o-xylene concentration on combustion rate. A kinetic model of the combustion process was developed by using the Langmuir-Hinshelwood mechanism, assuming the surface reaction between adsorbed oxygen atoms and adsorbed o-xylene molecules as controlling step. The rate expression includes the influences of o-xylene and water adsorption on the active centers of the catalyst. The estimation of rate expression parameters is based on o-xylene conversion measurements obtained under conditions free of influences of physical steps. The o-xylene combustion in air over a Pt/γ-Al2O3 catalyst was studied under conditions typical for depollution applications. A kinetic model based on the Langmuir-Hinshelwood mechanism is formulated, accounting for the experimentally observed negative influences of o-xylene and water concentrations on process kinetics. The reliability of the proposed model is demonstrated by comparing its predictions with measurements.
| Original language | English |
|---|---|
| Pages (from-to) | 2147-2154 |
| Number of pages | 8 |
| Journal | Chemical Engineering and Technology |
| Volume | 35 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2012 |
| Externally published | Yes |
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Keywords
- Alumina
- Catalytic combustion
- Kinetics
- Platinum
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemistry(all)
- Industrial and Manufacturing Engineering
Cite this
Kinetics of o-Xylene Combustion over a Pt/Alumina Catalyst. / Manta, C. M.; Bozga, G.; Bercaru, G.; Bîldea, C. S.
In: Chemical Engineering and Technology, Vol. 35, No. 12, 12.2012, p. 2147-2154.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Kinetics of o-Xylene Combustion over a Pt/Alumina Catalyst
AU - Manta, C. M.
AU - Bozga, G.
AU - Bercaru, G.
AU - Bîldea, C. S.
PY - 2012/12
Y1 - 2012/12
N2 - o-Xylene combustion in air over a Pt/γ-Al2O3 catalyst was investigated in a laboratory reactor at low concentrations typical for depollution applications. The results evidenced a slightly negative influence of o-xylene concentration on combustion rate. A kinetic model of the combustion process was developed by using the Langmuir-Hinshelwood mechanism, assuming the surface reaction between adsorbed oxygen atoms and adsorbed o-xylene molecules as controlling step. The rate expression includes the influences of o-xylene and water adsorption on the active centers of the catalyst. The estimation of rate expression parameters is based on o-xylene conversion measurements obtained under conditions free of influences of physical steps. The o-xylene combustion in air over a Pt/γ-Al2O3 catalyst was studied under conditions typical for depollution applications. A kinetic model based on the Langmuir-Hinshelwood mechanism is formulated, accounting for the experimentally observed negative influences of o-xylene and water concentrations on process kinetics. The reliability of the proposed model is demonstrated by comparing its predictions with measurements.
AB - o-Xylene combustion in air over a Pt/γ-Al2O3 catalyst was investigated in a laboratory reactor at low concentrations typical for depollution applications. The results evidenced a slightly negative influence of o-xylene concentration on combustion rate. A kinetic model of the combustion process was developed by using the Langmuir-Hinshelwood mechanism, assuming the surface reaction between adsorbed oxygen atoms and adsorbed o-xylene molecules as controlling step. The rate expression includes the influences of o-xylene and water adsorption on the active centers of the catalyst. The estimation of rate expression parameters is based on o-xylene conversion measurements obtained under conditions free of influences of physical steps. The o-xylene combustion in air over a Pt/γ-Al2O3 catalyst was studied under conditions typical for depollution applications. A kinetic model based on the Langmuir-Hinshelwood mechanism is formulated, accounting for the experimentally observed negative influences of o-xylene and water concentrations on process kinetics. The reliability of the proposed model is demonstrated by comparing its predictions with measurements.
KW - Alumina
KW - Catalytic combustion
KW - Kinetics
KW - Platinum
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U2 - 10.1002/ceat.201200371
DO - 10.1002/ceat.201200371
M3 - Article
VL - 35
SP - 2147
EP - 2154
JO - Chemical Engineering and Technology
JF - Chemical Engineering and Technology
SN - 0930-7516
IS - 12
ER -