Selective adsorption of trace morpholine impurities over<i>N</i>-ethyl morpholine by tetralactam solids

Li, Shi-Yao; Yao, Huan; Hu, Hao; Chen, Wenjie; Yang, Liu‐Pan; Wang, Lili

doi:10.1039/d3cc01164j

Cited by 8 publications

(1 citation statement)

References 51 publications

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“…Recently, nonporous adaptive crystals (NACs) based on supramolecular hosts have shown tremendous potential in adsorption and separation due to their unique structures and outstanding host–guest properties. − NACs are nonporous initially due to tightly packed modes. However, their pores can be induced by appropriate guest molecules via supramolecular interactions, thus creating corresponding host–guest structures and inducing crystalline phase transformations.…”

Section: Introductionmentioning

confidence: 99%

Selectivity Separation of Ortho-Chlorotoluene Using Nonporous Adaptive Crystals of Hybrid[3]arene

Wang,

Wu,

Wei

et al. 2024

Chem. Mater.

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Ortho-chlorotoluene serves as a vital raw material in the petrochemical industries. However, due to alkylation and chlorination, ortho-chlorotoluene is often mixed with metachlorotoluene and para-chlorotoluene. The selective separation of ortho-chlorotoluene from chlorotoluene isomers is a crucial step in industrial production. However, owing to the close boiling points of chlorotoluene isomers, traditional separation methods demand a large amount of energy. Therefore, there is an urgent need to develop new methods to achieve the efficient separation of chlorotoluene isomers. Herein, we developed an adsorptive separation strategy to achieve the separation of ortho-chlorotoluene using nonporous adaptive crystals of hybrid[3]arene H (Hα). Hα was proved to be highly effective in the separation of orthochlorotoluene from the binary or ternary mixture of chlorotoluene isomers. Single-crystal structure analysis and electrostatic potential maps indicated that the selectivity was derived from the stable host−guest structure between ortho-chlorotoluene and H. Besides, Hα exhibited high recyclability due to the reversible transformation between guest-free and guest-contained structures.

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