Change in bulk and surface structure of mixed MoO3-ZnO oxide by heat treatment in air and in hydrogen
Source abstract
Abstract
The mixed MoO3-ZnO oxides with various mole fraction of Mo, X Mo, obtained by the impregnation method were heated in air and in hydrogen. As for the mixed oxide heated in air, MoO3 reactedstoichiometrically with ZnO to give ZnMoO4 at X Mo < 0.5, while at X Mo > 0.5, the reaction did not proceed completely. On the other hand, for the mixed oxide heated in hydrogen, at X Mo < 0.5 ZnMoO4 was reduced to ZnMoO3 with the anion vacancy, while at X Mo > 0.5, MoO3 was reduced to MoO2 and ZnMoO4 was difficult to be reduced to ZnMoO3. The structure of the surface and/or near the surface was different from the bulk structure.
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Research context
OpenAlex topics: Catalytic Processes in Materials Science · Electron and X-Ray Spectroscopy Techniques · Nuclear Materials and Properties
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