Idioma:

Catalytic Combustion of Lean Methane Assisted by Electric Field over Pd/Co3O4 Catalysts at Low Temperature

Liu, Ke ; Li, Ke ; Xu, Dejun ; Lin, He ; Guan, Bin ; Chen, Ting ; Huang, Zhen

Shanghai jiao tong da xue xue bao, 2018-12, Vol.23 (Suppl 1), p.8-17 [Periódico revisado por pares]

Shanghai: Shanghai Jiaotong University Press

Texto completo disponível

Citações Citado por

Enviar para

Título:
Catalytic Combustion of Lean Methane Assisted by Electric Field over Pd/Co3O4 Catalysts at Low Temperature
Autor: Liu, Ke ; Li, Ke ; Xu, Dejun ; Lin, He ; Guan, Bin ; Chen, Ting ; Huang, Zhen
Assuntos: Architecture ; Catalysis ; Catalysts ; Catalytic oxidation ; Cobalt oxides ; Combustion ; Computer Science ; Electric fields ; Electrical Engineering ; Engineering ; Fourier transforms ; High temperature ; Life Sciences ; Low temperature ; Materials Science ; Methane ; Organic chemistry ; Oxidation ; Oxygen ; Photoelectron spectroscopy ; Photoelectrons ; Reduction ; Reflectance ; Self propagating high temperature synthesis ; Spectroscopy ; Spectrum analysis ; Temperature effects ; X ray photoelectron spectroscopy ; X-ray diffraction
É parte de: Shanghai jiao tong da xue xue bao, 2018-12, Vol.23 (Suppl 1), p.8-17
Descrição: A series of Pd/Co 3 O 4 catalysts were prepared by Self-Propagating High-Temperature Synthesis (SHS) method in this study, and electric field was applied for catalytic combustion of lean methane over Pd/Co 3 O 4 catalysts at low temperature. When electric field was applied, the catalytic combustion performance of Pd/Co 3 O 4 catalysts was greatly improved, and the application of electric field could reduce the load of active element Pd to some extent while maintaining the same efficiency. Based on experimental tests and the analysis results of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), H 2 -temperature-programmed reduction (H 2 -TPR) and in-situ diffuse reflectance infrared Fourier transform spectroscopy (in-situ DRIFTS), the mechanism of catalytic oxidation of CH 4 over Pd/Co 3 O 4 catalysts in electric field was proposed. The catalytic combustion of CH 4 occurs only when the temperature is higher than 250 °C normally, but when electric field was applied, the whole process of CH 4 oxidation was promoted significantly and the reaction temperature was reduced. Electric field could promote the reduction of the support Co 3 O 4 to release the lattice oxygen, resulting in the increase of PdO x and the surface chemisorbed oxygen, which could provide more active sites for the low-temperature oxidation of CH 4 . Furthermore, electric field could accelerate the dehydroxylation of CoOOH to further enhance the activity of the catalysts.
Editor: Shanghai: Shanghai Jiaotong University Press
Idioma: Inglês;Chinês

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Catalytic Combustion of Lean Methane Assisted by Electric Field over Pd/Co3O4 Catalysts at Low Temperature

Liu, Ke ; Li, Ke ; Xu, Dejun ; Lin, He ; Guan, Bin ; Chen, Ting ; Huang, Zhen

Shanghai: Shanghai Jiaotong University Press

Buscando em bases de dados remotas. Favor aguardar.