1H–31P HETCOR NMR elucidates the nature of acid sites in zeolite HZSM-5 probed with trimethylphosphine oxide?
Chemical Communications Pub Date: 2019-09-26 DOI: 10.1039/C9CC06763A
Abstract
Two-dimensional 1H–31P heteronuclear correlation NMR of trimethylphosphine oxide (TMPO) adsorbed in zeolites, in tandem with DFT calculations, challenges previous one-dimensional 31P NMR assignments, enabling the unambiguous discrimination of Br?nsted and Lewis acid sites, extending the understanding of TMPO:Br?nsted complexes formed with distinct stoichiometries at the HZSM-5 zeolite surface, and the proton-transfer mechanism.
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Journal Name：Chemical Communications
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CAS no.: 89640-58-4
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