| 氯化镁/二氧化硅复合载体型Z-N催化剂的乙烯聚合性能 |
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| 引用本文： | 王路海,张宁宁,任合刚,张瑞,刘宾元,闫卫东.氯化镁/二氧化硅复合载体型Z-N催化剂的乙烯聚合性能[J].精细石油化工,2009,26(2). |
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| 作者姓名： | 王路海 张宁宁 任合刚 张瑞 刘宾元 闫卫东 |
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| 作者单位： | 1. 河北工业大学化工学院,高分子科学与工程研究所,天津,3001302;中国石油石化研究总院大庆化工研究中心,黑龙江,大庆,163714
2. 河北工业大学化工学院,高分子科学与工程研究所,天津,3001302 |
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| 摘 要： | 制备了3种MgCl_2/SiO_2复合载体型Zielger-Natta催化剂,研究了其催化乙烯聚合性能。结果表明:在m(SiO_2):m(MgCl_2)=1:1时,所得催化剂的聚合活性较高。该催化剂在n(Al):n(Ti)=100:1时,均聚活性可达3.72×10~3g/(g·h),且聚合速率稳定,衰减缓慢;可以生产密度为0.933～0.885 g/cm~3的聚乙烯;其氢调敏感性较好,随氢气分压的增加,聚合物M_w在(78.1～23.0)×10~4范围内变化。
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| 关 键 词： | 复合载体 氯化镁 二氧化硅 Zielger-Natta催化剂 乙烯聚合 |
PERFORMANCE OF ZIEGLER-NATTA CATALYST ON MgCl2/SiO2 COMPOSITE SUPPORT FOR ETHYLENE POL YMERIZATION |
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| Wang Luhai,Zhang Ningning,Ren Hegang,Zhang Rui,Liu Binyuan,Yan Weidong.PERFORMANCE OF ZIEGLER-NATTA CATALYST ON MgCl2/SiO2 COMPOSITE SUPPORT FOR ETHYLENE POL YMERIZATION[J].Speciality Petrochemicals,2009,26(2). |
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| Authors: | Wang Luhai Zhang Ningning Ren Hegang Zhang Rui Liu Binyuan Yan Weidong |
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| Abstract: | Three kinds of catalysts were prepared by tuning the mass ratio of SiO_2 to MgCl_2 and the activities of the catalysts were evaluated.The SMT-2 catalysts have a high efficiency when m(SiO_2):m (MgCl_2) is 1:1.The performance of the catalyst SMT-2 was investigated in terms of the polymerization activity,the ability of copolymerization and the response to hydrogen.The results indicated that the polymerization activity is 3.72×10~3 g/(g?h) when n(Al):n(Ti) is 100:1.The copolymerization ability is very good.Through changing the dosage of 1-hexene,the density of LLDPE between 0.933 and 0.885 g/cm~3 is obtained.The response of SMT-2 to hydrogen is sensitive and the molecule weight of the polymer can be tuned between 78.1×10~4 and 23.0×10~4 by increasing the pressure of hydrogen. |
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| Keywords: | complex support magnesium dichloride silica Ziegler-Natta catalyst ethylene polymerization |
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