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    A new scanning tunneling microscope reactor used for high-pressure and high-temperature catalysis studies

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    Tao_new_scanning_tunneling.pdf (918.6Kb)
    Issue Date
    2008-01
    Author
    Tao, Franklin Feng
    Tang, David
    Salmeron, Miquel
    Somorjai, Gabor A.
    Publisher
    American Institute of Physics
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    We present the design and performance of a homebuilt high-pressure and high-temperature reactor equipped with a high-resolution scanning tunneling microscope STM for catalytic studies. In this design, the STM body, sample, and tip are placed in a small high pressure reactor 19 cm3 located within an ultrahigh vacuum UHV chamber. A sealable port on the wall of the reactor separates the high pressure environment in the reactor from the vacuum environment of the STM chamber and permits sample transfer and tip change in UHV. A combination of a sample transfer arm, wobble stick, and sample load-lock system allows fast transfer of samples and tips between the preparation chamber, high pressure reactor, and ambient environment. This STM reactor can work as a batch or flowing reactor at a pressure range of 10−13 to several bars and a temperature range of 300–700 K. Experiments performed on two samples both in vacuum and in high pressure conditions demonstrate the capability of in situ investigations of heterogeneous catalysis and surface chemistry at atomic resolution at a wide pressure range from UHV to a pressure higher than 1 atm.
    Description
    This is the published version. Copyright 2008 American Institute of Physics
    URI
    http://hdl.handle.net/1808/18950
    DOI
    https://doi.org/10.1063/1.2960569
    Collections
    • Chemical and Petroleum Engineering Scholarly Works [170]
    Citation
    Tao, Feng, David Tang, Miquel Salmeron, and Gabor A. Somorjai. "A New Scanning Tunneling Microscope Reactor Used for High-pressure and High-temperature Catalysis Studies." Rev. Sci. Instrum. Review of Scientific Instruments 79.8 (2008): 084101. http://dx.doi.org/10.1063/1.2960569

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    785-864-8983
    KU Libraries
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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