Abstract
Abstract The dynamic behavior of CH3OH molecules absorbed in the “pseudoliquid phase” of a heteropolyacid, H3PW12O40, was analyzed by high resolution solid-state 13C, 1H and 31P NMR. When CH3OH absorbed was less than 3 molecules/heteropolyanion, CH3OH molecules were all protonated and the rest of the protons remained presumably directly bonded to the bridging oxygen atoms of heteropolyanion. The hydroxyl protons of CH3OH and the protons of heteropolyacid exchanged rapidly in a wide range of absorption level, and CH3OH molecules became very mobile when the absorption amount exceeded 6 molecules/anion.
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