Clean and O-(2√2×√2)R45°Cu(100)surfaces were prepared to study the impact of surface oxygen on the activation of methane dissociation.Auger electron spectroscopy,low energy electron diffraction,infrared re...Clean and O-(2√2×√2)R45°Cu(100)surfaces were prepared to study the impact of surface oxygen on the activation of methane dissociation.Auger electron spectroscopy,low energy electron diffraction,infrared reflection absorption spectroscopy,scanning tunneling microscope,and a quadrupole mass-spectrometer for temperature programmed desorption were used to explore the behavior of CH_(4)on the two surfaces.The dissociative adsorption of CH_(4)was observed on oxygen-pre-covered Cu(100)but not on the clean surface indicating surface oxygen promotes the dissociation of the C-H bond.This study can be a reference for the conversion of methane into other high-value-added products with high efficiency and low energy consumption.展开更多
基金This work is supported by the National Key R&D Program of China(No.2022YFB4101201)the Na-tional Natural Science Foundation of China(No.21972162).
文摘Clean and O-(2√2×√2)R45°Cu(100)surfaces were prepared to study the impact of surface oxygen on the activation of methane dissociation.Auger electron spectroscopy,low energy electron diffraction,infrared reflection absorption spectroscopy,scanning tunneling microscope,and a quadrupole mass-spectrometer for temperature programmed desorption were used to explore the behavior of CH_(4)on the two surfaces.The dissociative adsorption of CH_(4)was observed on oxygen-pre-covered Cu(100)but not on the clean surface indicating surface oxygen promotes the dissociation of the C-H bond.This study can be a reference for the conversion of methane into other high-value-added products with high efficiency and low energy consumption.
