Kinetics of   o  ‐Xylene Combustion over a Pt/Alumina Catalyst | Zendy

Manta C. M. | Zendy; Bozga G. | Zendy; Bercaru G. | Zendy; Bîldea C. S. | Zendy

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Kinetics of o ‐Xylene Combustion over a Pt/Alumina Catalyst

Author(s) -

Manta C. M.,

Bozga G.,

Bercaru G.,

Bîldea C. S.

Publication year - 2012

Publication title -

chemical engineering and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.403

H-Index - 81

eISSN - 1521-4125

pISSN - 0930-7516

DOI - 10.1002/ceat.201200371

Subject(s) - catalysis , adsorption , chemistry , combustion , catalytic combustion , xylene , kinetics , oxygen , p xylene , reaction rate , inorganic chemistry , chemical engineering , organic chemistry , benzene , physics , quantum mechanics , engineering

o ‐Xylene combustion in air over a Pt/γ‐Al 2 O 3 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.

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