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Issue
Korean Journal of Chemical Engineering,
Vol.8, No.3, 164-167, 1991
AN XANES STUDY OF CARBIDES OF MOLYBDENUM AND TUNGSTEN
Lee JS, Yie JE
The X-ray absorption near edge structure(XANES) of molybdenum and tungsten com-pounds has been studied by using synchrotron radiation. Substantial difference in XANES features between metals and their carbides suggested significant difference in electronic structure between them. the shift in edge position indicated charge transfer from metal to carbon when a carbide is formed. In light of a modern band theory, the larger white line areas for carbides could be interpreted as due to some of the unoccupied d-states which are not measured by x-ray white line area.
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