Nanocrystalline H‐RTH Zeolite: An Efficient Catalyst for the Low‐Temperature Dehydration of Ethanol to Ethene,ChemSusChem

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Nanocrystalline H‐RTH Zeolite: An Efficient Catalyst for the Low‐Temperature Dehydration of Ethanol to Ethene
ChemSusChem ( IF 7.5 ) Pub Date : 2018-05-28 , DOI: 10.1002/cssc.201800864
Jeong Hwan Lee ₁ , Sujin Lee ₁ , Suk Bong Hong ₁

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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 (H₂O/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.

中文翻译：

纳米H-RTH沸石：乙醇低温脱水成乙烯的高效催化剂

生物乙醇的低温脱水是乙烯生产的一种环境友好的途径。在这里，我们比较了一系列具有不同骨架结构，酸强度和/或微晶尺寸的笼型小孔沸石在200°C的潮湿条件下（H ₂ O / EtOH = 0.2）进行乙醇脱水的催化性能。在这里研究的沸石中，发现纳米晶H-RTH比H-丝光沸石要有效得多，H-丝光沸石是迄今为止已知的该反应的最佳催化剂，可以通过产物形状的选择性加以合理化。尽管这种沸石的酸度在选择性形成乙烯中也起着至关重要的作用，但其纳米结晶度却是观察到的高催化剂耐久性的主要原因。

更新日期：2018-05-28

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