The high temperatures and pressures used in heterogeneous catalysis make it difficult to observe catalysts using conventional techniques. Now, adsorbed product molecules on the surface of a single-crystal model catalyst have been observed during catalysis using a custom-built scanning tunnelling microscope that can work in situ.
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(Feng) Tao, F., Tang, Y. More than skimming the surface. Nature Chem 8, 902–903 (2016). https://doi.org/10.1038/nchem.2630
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DOI: https://doi.org/10.1038/nchem.2630
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