Implication of the role of oxygen anions and oxygen vacancies for methanol decomposition over zirconia supported copper catalysts
作者： Gui-Sheng Wu , Lu-Cun Wang , Yong-Mei Liu , Yong Cao , Wei-Lin Dai
DOI: 10.1016/J.APSUSC.2006.01.056
关键词: Desorption 、 Oxygen 、 Cubic zirconia 、 Thermal desorption spectroscopy 、 Copper 、 Catalysis 、 Chemistry 、 Photochemistry 、 Dehydrogenation 、 Methanol 、 Inorganic chemistry
摘要: Abstract The interaction of methanol with Cu, monoclinic ZrO 2 , and Cu/m-ZrO catalysts has been investigated by temperature programmed desorption (TPD) reaction (TPRS) the aim understanding nature surface sites mechanism involved in decomposition. A synergetic effect detected since combination copper significantly facilitates decomposition facile evolution H CO species at much lower temperature. In conjunction DRIFTS -TPD measurements Cu/ZrO sample reduced elevated temperatures, over is suggested to occur primarily on aid presence oxygen anions vacancies generated species-spillover between zirconia. interface zirconia also evidenced be crucial methanol, main role metallic Cu being provide for removal efficiently recombining hydrogen atoms formed during dehydrogenation located
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