Adsorbent for organic fluoro-compound comprising cyclodextrin-supported polymer

摘要

The present invention is to provide a material that is capable of selectively adsorbing organic fluoro-compounds such as perfluorooctane sulfonic acid, allows the adsorbed organic fluoro-compounds to be recovered, and is reusable as an adsorbent, specifically to provide a polymer in which cyclodextrin is supported on the surface of a water-insoluble polymer, and an adsorbent containing the same, and a method of use of the same as a selective adsorbent of, in particular, an organic fluoro-compound.

主权项

1. An adsorbent for an organic fluoro-compound, wherein cyclodextrin is supported on the surface of a water-insoluble polymer,
wherein the water-insoluble polymer comprises polystyrene particles, wherein the polystyrene particles and the cyclodextrin are chemically bonded via a divalent linking group —X— in which
X is N, O, S, O(CH2)nO, with n being 1 to 6, orX is O(CH2CH2O)n, with n being 2 to 6, andthe hyphen “-” is a single bond; and wherein the organic fluoro-compound is selected from the group consisting of fluoroalkane carboxylic acids (R—COOH), fluoroalkane sulfonic acids (R—SO3H), fluoroalkyl alcohols (R—(CH2)nOH, with n being 1 to 6, and a mixture thereof, in which R is selected from the group consisting of CF3(CF2)n, with n 0 to 11; HCF2(CF2)n with n being 0 to 11; CF3(CF2)nO[CF(CF3)CF2O]mCF(CF3), with n being 0 to 5 and m being 0 to 5; and (CF3)2CF(CF2)n, with n being 0 to 10.