Intramolecular H/D Exchange of Ethanol Catalyzed by Acidic OH Groups on H-ZSM-5 Zeolite

Hiroshi Yamazaki; Toshiyuki Yokoi; Takashi Tatsumi; Junko N Kondo

doi:10.1021/jz5018625

Intramolecular H/D Exchange of Ethanol Catalyzed by Acidic OH Groups on H-ZSM-5 Zeolite

J Phys Chem Lett. 2014 Oct 16;5(20):3528-31. doi: 10.1021/jz5018625. Epub 2014 Oct 3.

Authors

Hiroshi Yamazaki¹, Toshiyuki Yokoi¹, Takashi Tatsumi¹, Junko N Kondo¹

Affiliation

¹ Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.

PMID: 26278604
DOI: 10.1021/jz5018625

Abstract

IR observation of ethanol adsorption clarified the presence of the apparent intramolecular isotope exchange from CD3CH2OH to CHD2CH2OD on acidic OH groups of H-ZSM-5 zeolite. This reaction did not proceed with CD3OH nor CH3CD2OH, 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 CD3 groups of ethanol and OH groups on zeolite.

Keywords: IR spectroscopy; alcohols; heterogeneous catalysis; reaction mechanism; zeolites.