Issue 8, 2020

Highly selective removal of heterocyclic impurities from toluene by nonporous adaptive crystals of perethylated pillar[6]arene

Abstract

The removal of heterocyclic impurities from toluene in the petrochemical industry is necessary but challenging. Herein, we provide a convenient and environmentally friendly adsorptive separation strategy using nonporous adaptive crystals of perethylated pillar[6]arene (EtP6). These crystals show a highly selective preference for heterocyclic compounds, and are capable of selectively adsorbing them from a mixture of toluene and heterocyclic compounds, ultimately improving the purity of toluene from 96.78% to 99.00%. Single crystal structures indicate that the selectivity derives from the differences in the structural stability of the guest-loaded EtP6 crystals.

Graphical abstract: Highly selective removal of heterocyclic impurities from toluene by nonporous adaptive crystals of perethylated pillar[6]arene

Supplementary files

Article information

Article type
Research Article
Submitted
19 5 2020
Accepted
15 6 2020
First published
16 6 2020

Mater. Chem. Front., 2020,4, 2325-2329

Highly selective removal of heterocyclic impurities from toluene by nonporous adaptive crystals of perethylated pillar[6]arene

W. Zhu, E. Li, J. Zhou, Y. Zhou, X. Sheng and F. Huang, Mater. Chem. Front., 2020, 4, 2325 DOI: 10.1039/D0QM00334D

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