SIMS Investigation of Adsorption of O2, H2O, CO, CO2, CH2O, and CH3OH and Coadsorption of O2 with CH2O and CH3OH on Polycrystalline Silver Surfaces

  • L. Wiedmann
  • N. L. Wang
  • R. Jede
  • L. D. An
  • O. Ganschow
  • A. Benninghoven
Conference paper
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 19)


In the past few years, the importance of a surface analytical approach to the study of heterogeneous catalysis has become evident [1]. In order to ensure the relevance of the surface physical results obtained in ultra-high vacuum for the catalytic processes under technical conditions (usually high pressure and temprature), we have set up an instrument which is a combination of a technical microreactor and a surface analytical system incorporating SIMS, AES, XPS, ISS and TDMS. The details of this combined system will be published elsewhere. It should, however, be pointed out that three kinds of experiments can be conducted in this instrument, which are essential for the understanding of catalytic processes:
  1. (1)

    well-defined reactions on model surfaces under “clean” conditions,

  2. (2)

    surface analytical characterization of catalysts as drawn from the plant,

  3. (3)

    catalytic reactions in the microreactor and subsequent surface characterization of the catalyst after transferring it into the surface analysis section in vacuum and within a few minutes.



Silver Surface Adsorbate Pressure Fingerprint Spectrum Methanol Exposure Clean Silver 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • L. Wiedmann
    • 1
  • N. L. Wang
    • 2
  • R. Jede
    • 1
  • L. D. An
    • 3
  • O. Ganschow
    • 1
  • A. Benninghoven
    • 1
  1. 1.Physikalisches InstitutUniversität MünsterMünsterFed. Rep. of Germany
  2. 2.Shanghai Institute of MetallurgyAcademia SinicaChina
  3. 3.Lanchow Institute of Chemical PhysicsAcademia SinicaChina

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