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

We use nonporous adaptive crystals of perethylated pillar[6]arene to adsorb heterocyclic compounds from a mixture of toluene and heterocyclic compounds with high selectivity, ultimately improving the purity of toluene from 96.78% to 99.00%.