The oxidation of copper catalysts during ethylene epoxidation
作者： M. T. Greiner , T. E. Jones , B. E. Johnson , T. C. R. Rocha , Z. J. Wang
DOI: 10.1039/C5CP03722K
关键词:
摘要: The oxidation of copper catalysts during ethylene epoxidation was characterized using in situ photoemission spectroscopy and electron microscopy. Gas chromatography, proton-transfer reaction mass spectrometry electron-ionization were used to characterize the catalytic properties oxidized copper. We find that corrodes a 1 : 1 mixture oxygen ethylene. catalyst corrosion passes through several stages, beginning with formation an O-terminated surface, followed by Cu2O scale eventually CuO scale. exhibits measurable activity for epoxidation, but low selectivity 8/2500) forms covers surface.
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