258701 Methane Combustion Over MnOx-Based Catalysts At Low Temperatures : Operando Raman and Kinetic Study

Wednesday, October 31, 2012
Hall B (Convention Center )
Yi-Fan Han, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China., shanghai, China

Methane Combustion over MnOx-based catalysts at low temperatures : Operando Raman and Kinetic Study

Jing Xu, Like Ouyang,  Wei Mao,  Xin-Chao Xu, Jun-Jie Su,  Yi-Fan Han*,†

State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, People’s Republic of China.

*To whom correspondence should be adressed. E-mail: yifanhan@ecust.edu.cn. Tel: +86-21-64251928, Fax: +86-21-64251928

Abstract: We here report on a mechanistic study of low-temperature methane combustion over Mn-based catalysts via operando Raman and kinetic measurements in a pressure range from 0.01 to 0.1MPa and temperature range from 298 to 753K. The variation of catalyst structure with temperature, pressure and ratio of CH4/O2 was thoroughly characterized. In addition, other techniques such as in situ diffuse reflectance infrared Fourier transform spectroscopy of CO adsorption (DRIFTS), X-rays photon spectroscopy (XPS) were also used. We believe in situ/operando spectroscopies in combination with kinetics is a convenient and versatile technique for the investigation of the relationship of the catalyst structure and activity.  


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