DOI Number : 10.5614/j.eng.technol.sci.2013.45.2.7
Hits : 5

Determination of Kinetic Parameters for Methane Oxidation over Pt/γ-Al2O3 in a Fixed-Bed Reactor

Vita Wonoputri1, Mohammad Effendy1, Yogi Wibisono Budhi1, Yazid Bindar2 & Subagjo1

1Research Group of Chemical Engineering Process Design and Development, Faculty of Industrial Technology, Institut Teknologi Bandung
Jalan Ganesha 10, Bandung 40132, Indonesia
2Research Group of Chemical Engineering Energy and Processing System, Faculty of Industrial Technology, Institut Teknologi Bandung
Jalan Ganesha 10, Bandung 40132, Indonesia


Abstract. This paper describes a kinetic study for the determination of the kinetic parameters of lean methane emission oxidation over Pt/γ-Al2O3 in a dedicated laboratory scale fixed bed reactor. A model of the mechanistic reaction kinetic parameters has been developed. The reaction rate model was determined using the rate-limiting step method, which was integrated and optimized to find the most suitable model and parameters. Based on this study, the Langmuir-Hinshelwood reaction rate model with the best correlation is the one where the rate-limiting step is the surface reaction between methane and one adsorbed oxygen atom. The pre-exponential factor and activation energy were 9.19 105 and 92.04 kJ/mol, while the methane and oxygen adsorption entropy and enthalpy were 17.46 J/mol.K, 2739.36 J/mol,16.34 J/mol.K, and 6157.09 J/mol, respectively.

Keywords: catalytic oxidation; fixed bed reactor; kinetic parameter; Langmuir-Hinshelwood; methane; oxidation; Pt/Al2O3.

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