화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.60, No.2, 931-938, 2021
Furan- and Thiophene-Modified Hyper-Crosslinked Polymers and Their Adsorption of Phenol from Aqueous Solution
Herein, furan- and thiophene-modified hyper-cross-linked polymers, namely, PS-FU-HCP and PS-TH-HCP, were successfully prepared from chloromethylated polystyrene via two-step Friedel-Crafts alkylation reactions, and they were applied as the adsorbents for the comparative adsorption of phenol from aqueous solution. The first Friedel-Crafts alkylation reaction produced abundant oxygen (0) and sulfur (S) for the polymers, and the 0 and S contents were measured to be 12.7 and 9.15 wt %, respectively. The second one created abundant new micropores for the polymers, and the Brunauer-Emmett-Teller (BET) surface area (S-BET) of the polymers increased to 560 and 574 m(2)/g, respectively. The resulting polymers are promising for the adsorption of phenol from aqueous solution, and the maximum capacities (q(max)) reached 180.7 and 173.1 mg/g for PS-FU-HCP and PS-TH-HCP, respectively. The kinetic curves displayed that the adsorption attained equilibrium within 60 min and the pseudo-second-order rate model characterized the kinetic data well with the kinetic rates of 1.40 x 10(-3) g/(mg.min) and 6.72 x 10(-4) g/(mg.min), respectively.