In this work, Aquivion PFSA resin was shown to be an interesting alternative as a heterogenous catalyst for the continuous gas phase reaction of ethanol dehydration in mild conditions, thanks to its high thermal stability and superacid character. This material was confirmed to have a high thermal stability up to 300 °C, after which the desulphonation process began. Under optimised reaction conditions, the Aquivion catalyst showed a conversion of over 90 % ethanol as well as a selectivity to ethylene. The only detected by-product was diethyl ether, the formation of which was facilitated by low temperature. The dehydration activity was shown to depend on the number of acid sites and material shaping. Fluorescence microscopy, used to study the penetration of different alcohols into the shaped Aquivion, indicated the high polarity of ethanol, enabling the permeation into the pellet structure, thus facilitating the use of the -SO3H that is available on the resin, despite its very low surface area. The catalyst’s durability was proven by a stable operation for 14 h on-stream at 150 °C, without a significant evidence of coke deposition.

在这项工作中，Aquivion PFSA树脂由于其高的热稳定性和超强的酸度特性，在温和的条件下作为乙醇脱水的连续气相反应的多相催化剂被证明是有趣的替代品。确认该材料在高达300°C的温度下具有很高的热稳定性，此后开始进行脱磺化工艺。在优化的反应条件下，Aquivion催化剂显示出超过90％的乙醇转化率以及对乙烯的选择性。唯一检测到的副产物是乙醚，其形成通过低温促进。显示脱水活性取决于酸位点的数量和材料的形状。荧光显微镜用于研究不同醇类向成型Aquivion的渗透，表明乙醇具有高极性，尽管其表面积很小，但仍可渗透到颗粒结构中，从而有利于使用树脂上可用的-SO3H。催化剂的耐用性已通过在150°C下稳定运行14 h证明，没有明显的积炭迹象。