Optical absorption and catalytic activity of molybdenum sulfide edge surfaces

The optical and catalytic properties of molybdenum sulfide edge planes have been studied in single crystals and disordered powders. We observe an infrared optical absorption due to the edge planes in the single crystal platelets. This absorption is proportional to the hydrodesulfurization catalytic...

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Bibliographic Details
Published in:Journal of catalysis 1986-07, Vol.100 (1), p.176-184
Main Authors: Roxlo, C.B., Daage, M., Ruppert, A.F., Chianelli, R.R.
Format: Article
Language:English
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Summary:The optical and catalytic properties of molybdenum sulfide edge planes have been studied in single crystals and disordered powders. We observe an infrared optical absorption due to the edge planes in the single crystal platelets. This absorption is proportional to the hydrodesulfurization catalytic activity in unsupported powders which were annealed at various temperatures to change their degree of crystallinity. This provides a direct correlation between the electronic structure of these materials as measured by optical absorption and their catalytic activity. This result shows that the optical and catalytic properties of the edge sites are similar in the amorphous and crystalline materials and we derive turnover numbers and absorption cross sections for these sites.
ISSN:0021-9517
1090-2694
DOI:10.1016/0021-9517(86)90083-7