Intramolecular H/D Exchange of Ethanol Catalyzed by Acidic OH Groups on H‑ZSM‑5 Zeolite
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Abstract
IR
observation of ethanol adsorption clarified the presence of the apparent
intramolecular isotope exchange from CD<sub>3</sub>CH<sub>2</sub>OH
to CHD<sub>2</sub>CH<sub>2</sub>OD on acidic OH groups of H-ZSM-5
zeolite. This reaction did not proceed with CD<sub>3</sub>OH nor CH<sub>3</sub>CD<sub>2</sub>OH, implying that the β-hydrogen of alcohol
had interaction with the lattice oxygen adjacent to Al and that the
reaction was mediated by isotope exchange of CD<sub>3</sub> groups
of ethanol and OH groups on zeolite