Summary
UV-visible spectroscopic studies of solid H3PMo12O40were carried out to elucidate the effect of crystalline water molecules, and in turn, to provide a guideline for utilizing UV-visible spectra of solids to probe reduction potentials of HPA catalysts. UV-visible spectra of reduced/reoxidized H3PMo12O40were also measured to check the possibility of utilizing UV-visible spectroscopy as a probe of reduction/oxidation states of H3PMo12O40catalyst. Absorption edges of solid H3PMo12O40 shifted to longer wavelength with heating to decrease the number of crystalline water molecules. It was also revealed that UV-visible spectra of the H3PMo12O40catalyst varied in a systematic way depending on the reduction/oxidation states of the H3PMo12O40catalyst.</o:p>
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Youn, M., Kim, H., Song, I. et al. UV-visible spectroscopic study of solid state 12-molybdophosphoricacid catalyst . React Kinet Catal Lett 87, 85–91 (2005). https://doi.org/10.1007/s11144-006-0012-8
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DOI: https://doi.org/10.1007/s11144-006-0012-8