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以轻质烷烃异构化中试放大用的丝光沸石催化剂为研究对象,运用“原位”红外反应技术和催化剂活性评价手段,并结合反应动力学参数计算,探讨了正已烷异构化反应机理。结果表明,可用五配位反应中间物种机理解释正碳离子的生成。用双分子六元环反应中间物机理能较好地解释正已烷在氢型丝光沸石(HM)上的异构化过程。对正已烷在Pd/HM上的反应过程也可用正碳离子机理结合双分子六元环中间物机理解释。
In this paper, we use the “in-situ” infrared reaction technology and catalyst activity evaluation method, and calculate the reaction kinetics parameters to study the isomerization reaction of n-hexane mechanism. The results show that the intermediate mechanism of pentacoordination reaction can be used to explain the formation of positive carbon ions. The bimolecular six-membered ring intermediate mechanism can explain the isomerization of n-hexane on hydrogen mordenite (HM). The reaction of n-hexane on Pd / HM can also be explained by the mechanism of carbenium ion combined with bimolecular six-membered ring intermediates.