天然气化工2017，Vol.42Issue(4)：1-5,16,6.
硅胶负载聚醚离子液体的制备及其催化环氧丙烷和二氧化碳合成碳酸丙烯酯性能
Preparation of silica gel-supported polyether ionic liquid and its catalytic perfomance in synthesis of propylene carbonate from propylene oxide and carbon dioxide
摘要
Abstract
Ionic liquid 1-hydroxyl polyether-3-methyl imidazolium chloride ([HO-PECH-MIM]Cl) was synthesized, and then reacted with tetraethyl orthosilicate (TEOS) to prepare the silica gel-supported polyether ionic liquid (Si-[HO-PECH-MIM]Cl) catalyst. Chemical structure of the catalyst was characterized by IR, and its thermal property and apparent morphology were determined by TG and SEM, respectively. Then the catalytic performace of the catalyst was evaluated for synthesis of propylene carbonate (PC) from propylene oxide (PO) and carbon dioxide in a batch autoclave, and the effects of reaction temperature, catalyst dosage and recycle times on the conversion of PO and the selectivity to PC were investigated. The results showed that the catalyst Si-[HO-PECH-MIM]Cl have been prepared successfully, by which the phase behavior was changed and the thermal stability was improved. The catalyst possesses high activity and good selectivity under mild conditions, and can be recovered easily and reused for many times. Under the reaction conditions of 90℃, 1.5MPa and the mass ratio of catalyst to PO of 2.0%, the conversion of PO and the selectivity to PC were 100%and 98.1%, respectively, and both of them were still more than 90.0%after 15 cycles of reaction.关键词
聚醚离子液体/硅胶载体/催化性能/环氧丙烷/二氧化碳/碳酸丙烯酯Key words
polyether ionic liquids/silica gel support/catalytic performance/propylene oxide/carbon dioxide/propylene carbonate分类
化学引用本文复制引用
郭立颖,邓莉莉,马秀云,李承媛..硅胶负载聚醚离子液体的制备及其催化环氧丙烷和二氧化碳合成碳酸丙烯酯性能[J].天然气化工,2017,42(4):1-5,16,6.基金项目
辽宁省教育厅计划项目(L2014037)资助,辽宁省科技厅自然科学基金项目(201602537)资助 （L2014037）
