β-环糊精聚合物吸附提纯石化副产物中苯乙酮的研究

针对石油化工PO/SM联产工艺产生的富含苯乙酮和1-苯乙醇的副产物，本项目提出采用选择性吸附法从中分离提纯高含量的苯乙酮。前期研究发现β-环糊精空腔对该混合副产物中的苯乙酮具有非常强的选择性包结能力，基于此，本项目拟通过反相乳液聚合法研制保留有β-环糊精空腔的β-环糊精聚合物微球，并以此作为选择性吸附法的吸附介质。通过静态吸附试验考察聚合物微球对苯乙酮和1-苯乙醇的吸附特性；通过固定床吸附试验考察混合底物的吸附传质动力学过程。根据静态吸附与连续吸附试验结果，筛选1-2种合适的聚合物微球，对PO/SM联产工艺的混合副产物分别进行间歇吸附和固定床吸附分离，并进行吸附工艺的优化。

This research proposes a selective adsorption method for obtaining high purified acetophenone from petrochemical by-product coming from the production of propylene oxide/styrene monomer (PO/SM), which mainly contains the mixture of acetophenone and 1-phenylethanol. Previous research has found that β-cyclodextrin cavity has the capability of highly selective inclusion of acetophenone. Therefore, β-cyclodextrin polymer microspheres (β-CDPs), whose internal cavities are kept in the polymeric matrices will be constructed by inverse (W/O) emulsion polymerization method. The adsorption properties of acetophenone and 1-phenylethaol onto β-CDPs and the adsorption diffusional mass transfer processes were studied through static adsorption experiments and fixed-bed adsorption, respectively. According to these results, the β-CDPs having the best separation power were selected to purify acetophenone from by-product of PO/SM production through batch and fixed-bed adsorption experiments.