Synthesis Of Novel Hypercrosslinked Resin And Adsorption Of Benzene And Methylbenzene From The Aqueous Solution

The industrialization brings huge economic benefits to the society. However, it also results in severe environmental pollution. Owing to high specific surface area and micro porous structure, hypercrosslinked resins have excellent adsorption performance. Hypercrosslinked resins are widely used in hydrogen storage, adsorption, separation, etc. And it plays an important role in removing organic pollutants in industrial water.A novel non-polystyrene type hypercrosslinked resin (MB-XDC resin) was synthesized in this thesis. The MB-XDC resin was obtained by copolymerization of p-xylylene dichloride and methylbenzene through continuous Friedel-Crafts alkylation reaction in homogeneous solution. The synthetic route was very simple, and the MB-XDC resin had high specific surface area, micro porous structure and high pore volume. Through orthogonal experiments, the optimum synthesis condition had been founded. The result is as follows:the mole ratio of methylbenzene and p-xylylene dichloride is1:3; the pre-polymerization temperature is60℃; the pre-polymerization time is3hours; the monomer concentration is10.5w/v%; the weight of catalysts FeCl3is0.05g.Furthermore, the adsorption performance of MB-XDC resin for benzene and methylbenzene in water was studied. The concentration of benzene in water was determined by GC, whose reliability has been testified in the thesis. The result show that this method has good linearity in selected concentration range, the correlation coefficient is0.9998, the accuracy and precision confirm with the regulations. The adsorption data show that MB-XDC resin has better adsorption performance than commercial H103resin in high concentration aqueous solution. And the adsorption equilibrium could be achieved within40min. In abrupt pollution simulation adsorption experiment, the adsorption capacity of MB-XDC resin for benzene and methylbenzene were4046mg/g and2353mg/g, respectively.