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

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• 作者：Hiroshi Yamazaki ; Toshiyuki Yokoi ; Takashi Tatsumi ; Junko N. Kondo
• 刊名：The Journal of Physical Chemistry Letters
• 出版年：2014
• 出版时间：October 16, 2014
• 年：2014
• 卷：5
• 期：20
• 页码：3528-3531
• 全文大小：277K
• ISSN：1948-7185

文摘

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 尾-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:

zeolites; heterogeneous catalysis; reaction mechanism; alcohols; IR spectroscopy