XPS/SIMS studies of the promoter action in methanol synthesis over silica-supported Pd catalysts

作者: C. Sellmer , R. Prins , N. Kruse

DOI: 10.1023/A:1019000903974

关键词: Transition metalCatalysisInorganic chemistryMethanolChemistryFormateSecondary ion mass spectrometryMass spectrumX-ray photoelectron spectroscopyCarbon monoxide

摘要: Pd-based catalysts prepared from ultra-pure SiO2 and doped with 5000 ppm Li, Ca La were subjected to CO hydrogenation(H2/CO=2, p=9 bar, T=553 K) in a flow reactor directly attached an ultra-high vacuum chamber facilities for X-ray photoelectron spectroscopy (XPS) secondary ion mass spectrometry (SIMS). The exhibited high selectivity (usually above 99%) methanol synthesis their activities found increase the order Li

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