摘要
介孔SiO_2球与三齿镍配合物通过偶联反应制备了一种新型负载镍系催化剂,通过红外光谱、粉末衍射、扫描电镜等进行了表征。在三甲基铝的活化下,制备的负载型催化剂对苯乙烯聚合反应表现出中等催化活性。所得聚合产物经凝胶色谱、红外光谱、核磁共振谱等进行了表征,结果表明,所得聚苯乙烯为无规聚苯乙烯,分子量中等(Mn^104)。
A new mesoporous SiO_2 sphere supported nickel pre-catalysts were prepared from the tridentate nickel complexes and mesoporous SiO_2 sphere through coupled reaction,which have been characterized by IR,XRD,SEM,etc. Employing TMA as cocatalyst,the prepared supported pre-catalyst exhibited moderate catalytic activities for styrene polymerization. Characterized by GPC,NMR and IR etc,the obtained polystyrene was in atactic microstructure,moderate molecular weight( Mn^104).
出处
《廊坊师范学院学报(自然科学版)》
2015年第6期36-40,共5页
Journal of Langfang Normal University(Natural Science Edition)
基金
河北省自然基金资助项目(B2013408014)
吉林大学无机合成与制备国家重点实验室开放基金资助项目(2013-22)
廊坊师范学院重点资助项目(LSLZ201402)
关键词
介孔SiO_2球
三齿镍配合物
异相催化
苯乙烯聚合
mesoporous SiO_2 sphere
tridentate nickel complexe
heterogeneous catalysis
styrene polymerization