磁性固体碱催化剂Fe_3O_4/CaO的制备及催化降解PET的性能研究  

Preparation and application of magnetic solid base catalysts Fe_3O_4/CaO on PET degradation

作　　者：黄继明[1] 袁露[1] 汤旭[1] 沈家国[1] 吴兰艳[1] 

机构地区：[1]铜仁学院材料与化学工程学院,铜仁554300

出　　处：《化工新型材料》2016年第11期249-251,共3页New Chemical Materials

基　　金：[贵州松桃低品位锰矿制备锰基磁性固体酸催化剂的工艺优化(黔科合LH字[2015]7226号)];贵州省教育厅产学研基地资助项目(黔教合ky字[2013]133);[新型水处理剂磺酸基聚合物的合成及性能研究(黔科合J字LKT[2012]18)号]

摘　　要：以四氧化三铁(Fe_3O_4)为磁性载体,负载碱土金属氧化物CaO制得磁性固体碱催化剂CaO/Fe_3O_4。将其用于催化降解废弃聚对苯二甲酸乙二酯(PET),通过傅里叶变换红外光谱(FT-IR)、氢核磁谱(1 H-NMR)等对降解产物进行表征。结果表明:废弃PET降解产物为对苯二甲酸二乙二醇酯(BHET)单体,BHET回收率最高可以达到83.74%;催化剂重复使用6次,催化活性变化不大。A solid base catalyst with ferroferric oxide,as a magnetic carrier loaded with alkaline-earth metallic oxide, was prepared. The product was applied to catalyze PET degradation in ethylene glycol （glycolysis of PET）. The melting point, flourier transform infrared spectrometer （FT-IR）, NMR-H spectrum were adopted to characterize and analyze the de- graded products. Results showed that,BHET was degradation products of PET. The highest recovery rate of BHET was owned by 83.74%. The catalyst could he reused repeatedly 6 times and its activity basically kept unchanged.

关 键 词：固体碱催化剂 FE3O4 CAO 废弃PET BHET 

分 类 号：O643.36[理学—物理化学]