Adsorptive Separation of Benzene, Cyclohexene, and Cyclohexane by Amorphous Nonporous Amide Naphthotube Solids
Adsorptive Separation of Benzene, Cyclohexene, and Cyclohexane by Amorphous Nonporous Amide Naphthotube Solids
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无定形无孔酰胺萘管固体吸附分离苯、环己烯和环己烷
DOI：
10.1002/anie.202009436
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Jiang Wei
中科院分区：
文献类型：
--
作者：
Yao Huan;Wang Yu-Mei;Quan Mao;Farooq M. Umar;Yang Liu-Pan;Jiang Wei
苯加氢是一个重要的工业过程。反应不完全，导致苯、环己烷和/或环己烯的混合物必须在进一步反应之前分离。目前使用的萃取和共沸蒸馏操作复杂，能源密集。吸附分离提供了一种节能的替代方法。然而，用吸附分离方法分离三元混合物尚未见报道。在本研究中，我们报道了两个具有氢键位点的大环宿主，它们能够分离苯、环己烯和环己烷的三元混合物。发现N−H⋅⋅⋅π相互作用在选择性分离中起关键作用。此外，该系统具有吸附快、负载率高、回收方便等优点，具有较好的实际应用前景。
Benzene hydrogenation is an important industrial process. The reaction is incomplete, resulting in a mixture of benzene, cyclohexane, and/or cyclohexene that have to be separated before any further reactions. The currently used extractive and azeotropic distillations are operationally complex and energy intensive. Adsorptive separation provides an alternative energy‐efficient method. However, the separation of the ternary mixture by adsorptive separation has not yet been reported. In the present research, we report two macrocyclic hosts with hydrogen‐bonding sites in their cavities that are able to separate the ternary mixture of benzene, cyclohexene, and cyclohexane. N−H⋅⋅⋅π interactions were found to play a key role in the selective separation. In addition, fast adsorption, high loading ratios, and easy recycling are achieved with the present system, which is promising for practical applications.