钒氧配合物的合成及其催化乙烯聚合反应性能研究  

SYNTHESIS OF OXO-VANADIUM COMPLEX AND ITS CATALYTIC PERFORMANCE IN ETHYLENE POLYMERIZATION

作　　者：黄贵秋[1] 陈敏娥[1] 熊拯[1] 

机构地区：[1]钦州学院化学化工学院,广西钦州535000

出　　处：《石油炼制与化工》2012年第8期44-47,共4页Petroleum Processing and Petrochemicals

基　　金：广西教育厅科研项目(200911LX435);钦州市科学研究与技术开发计划项目(20093203);钦州学院科研项目(2010XJKY-48C)

摘　　要：采用二(2-乙基己基)磷酸、2-乙基己基磷酸-2-乙基己基酯、磷酸三丁酯及正辛醇4种萃取剂,通过萃取法合成了4种钒氧配合物。钒氧配合物的结构用元素分析仪及红外光谱(IR)仪表征,聚合产物结构用凝胶渗透色谱仪(GPC)、差热(DSC)及核磁共振波谱(13C NMR)仪测定。结果表明,合成的钒氧配合物在Et3Al2Cl3的活化下,常压下催化乙烯聚合反应的活性为23～57 kg/(mol.h),产品为线性高密度聚乙烯,黏均相对分子质量为4 800～9 500,相对分子质量分布为4.5左右,熔点在136～138℃之间。Four extraction agents,i.e.di-（2-ethylhexyl）-phosphoric acid（P 204）,2-ethylhexyl phosphoric acid mono-（2-ethylhexyl） ester（P 507）,tributyl phosphate（TBP） and 1-octanol（NOOH）,were used to synthesize oxo-vanadium complexes by extraction method,and the synthesized complexes were used as catalysts for ethylene polymerization.These four complexes were characterized by elemental analysis,FT-IR and the structures of the polymerization products were characterized by GPC,DSC and 13 C NMR.Test results showed that under atmospheric pressure,activated by Et 3 Al 2 Cl 3,the catalytic activities for ethylene homopolymerization of these catalysts were in the range of 23—57 kg/（mol.h）,and the obtained polymers were linear high density polyethylene,with M ν =（4.8—9.5） × 10 3,PDI =4.5,T m = 136—138 ℃.

关 键 词：钒氧配合物 萃取 乙烯 聚合 

分 类 号：O631.5[理学—高分子化学]