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Nanocrystalline H‐RTH Zeolite: An Efficient Catalyst for the Low‐Temperature Dehydration of Ethanol to Ethene
Author(s) -
Lee Jeong Hwan,
Lee Sujin,
Hong Suk Bong
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201800864
Subject(s) - zeolite , catalysis , nanocrystalline material , dehydration , mordenite , chemistry , selectivity , ethanol , crystallite , organic chemistry , chemical engineering , crystallography , biochemistry , engineering
The low‐temperature dehydration of bioethanol is an environmentally benign route to ethene production. Here we compare the catalytic properties of a series of cage‐based small‐pore zeolites with different framework structures, acid strengths, and/or crystallite sizes for ethanol dehydration at 200 °C under wet conditions (H 2 O/EtOH=0.2). Among the zeolites studied here, nanocrystalline H‐RTH was found to be considerably more effective than H‐mordenite, the best catalyst for this reaction known to date, which can be rationalized by product shape selectivity. Whereas the acidity of this zeolite also plays a crucial role in selectively forming ethene, its nanocrystallinity is primarily responsible for the observed high catalyst durability.