废聚苯乙烯裂解催化剂的筛选及工艺条件的优化

The Study on the Catalysts Selection and Optimum Condition of the Degradation of Waste Polystyrene

研究了聚苯乙烯在固体酸、固体碱和过渡金属氧化物存在下的裂解情况，得出的催化性能顺序为：固体碱＞过渡金属氧化物＞固体酸。并以催化性能最佳的氧化钡进行了反应条件的探索。得出在常压下，温度为４２０℃，催化剂量为２％时，可以得到的裂解液和苯乙烯收率最高，分别为９０％和７１２％。

The degradation of waste polystyrene over solid acids,solid bases and transitional metal oxides was studied.It was concluded that the order of catalytic effects is solid bases > transitional metal oxides > solid acids.The optimum condition of the degradation over solid bases BaO was also studied.The yields of distillate and styrene can attain 90% and 71.2% respectively under the degradation condition of temperature 420 ℃,pressure 1 atm,and catalyst content 2%.