| Cp_2ZrCl_2/BF_3/SiO_2-MAO催化体系用于乙烯聚合的研究 |
| |
| 引用本文： | 葛从辛,王立,袁幼菱,王幽香,潘杰,封麟先.Cp_2ZrCl_2/BF_3/SiO_2-MAO催化体系用于乙烯聚合的研究[J].宁波大学学报(理工版),1999(4). |
| |
| 作者姓名： | 葛从辛 王立 袁幼菱 王幽香 潘杰 封麟先 |
| |
| 摘 要： | 报道了Ｃｐ２ＺｒＣｌ２／ＢＦ３／ＳｉＯ２－ＭＡＯ催化体系的制备．发现在２５ｍＬ甲苯中加入Ｃｐ２ＺｒＣｌ２的量从６８．７ｍｍｏｌ增加到２７４．６ｍｍｏｌ，Ｚｒ在ＢＦ３／ＳｉＯ２上的负载量也随之从每克ＳｉＯ２中含有２０．４ｍｍｏｌ增加到４２．８ｍｍｏｌ．用该催化体系催化乙烯聚合结果表明，在相同Ａｌ／Ｚｒ比条件下，Ｃｐ２ＺｒＣｌ２／ＢＦ３／ＳｉＯ２－ＭＡＯⅡ活性最高．同时提出了制备反应的机理．
|
| 关 键 词： | 负载型催化剂 修饰无机物载体 乙烯聚合 |
Cp_2ZrCl_2/ BF_3 / SiO_2-MAO Catalytic System for Ethylene Polymerization |
| |
| GE Cong-xin, WANG Li, YUAN You-lin, WANG You-clang, PAN Jie,FENG Lin-clan.Cp_2ZrCl_2/ BF_3 / SiO_2-MAO Catalytic System for Ethylene Polymerization[J].Journal of Ningbo University(Natural Science and Engineering Edition),1999(4). |
| |
| Authors: | GE Cong-xin WANG Li YUAN You-lin WANG You-clang PAN Jie FENG Lin-clan |
| |
| Abstract: | A model catalytic system Cp 2ZrCl_2/BF_3/SiO_2-MAO was prepared. It is foundthat with increasing added-Cp_2ZrCI_2 quanhty tyom 68.7 mmol to 274.6 mmol in 2.5 mltoluene, supported-Cp_2ZrCI_2 quantity on BF_3/ SiO_2 increases from 20.4 mmol to 42.8 mmolin per gram SiO_2 accordingly. The results of ethylene polylnerization using Cp_2ZrCl_2/BF_3/SiO_2-MAO catalytic systcm show that the activity of Cp_2ZrOl_2/BF_3/SiO_2 -MAO II ishighest at the same Al/Zr ratio.A preparation mechanism is suggested. |
| |
| Keywords: | Supperted catalyst modification of support ethylene polymerization |
|
