摘要
The induction period of dehydrogenation and aromatization of methane over Mo/HZSM 5 was studied by real time resonance enhanced two photon ionization (RE2PI) technique. It is found that the formation of benzene evidently involves three different stages during the induction period. This probably means that the active sites of the catalysts undergo a transformation from Mo 6+ species to lower valence Mo species, and the Mo 6+ species also has feeble catalytic activity.
The induction period of dehydrogenation and aromatization of methane over Mo/HZSM-5 was studied by real-time resonance-enhanced two-photon ionization (RE2PI) technique. It is found that the formation of benzene evidently involves three different stages during the induction period. This probably means that the active sites of the catalysts undergo a transformation from Mo6+ species to lower valence Mo species, and the Mo6+ species also has feeble catalytic activity.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2001年第3期294-296,共3页
