以MgCl_2为载体的高效聚丙烯催化剂合成机理的探讨  

INVESTIGATION ON MECHANISM OF PREPARATION OF HIGH ACTIVITY MgCl_2 SUPPORTED PP CATALYST

作　　者：姜家乐[1] 洪晓宇[1] 景振华[1] 

机构地区：[1]中国石化上海石油化工股份有限公司催化所,石油化工科学研究院

出　　处：《石油炼制与化工》1994年第3期15-18,共4页Petroleum Processing and Petrochemicals

摘　　要：通过对ＳＧ型高效聚丙烯催化剂制备过程中各阶段中间产物的红外光谱测试结果的探讨，有趣地发现，苯酥在ＭｇＣｌ２晶体析出过程中起沉淀剂的作用。沉淀完全后苯酐消失；ＭｇＣｌ２晶体中存在两种配位中心。邻苯二甲酸酐与ＭｇＣｌ２醇合物反应生成双酯，与ＭｇＣｌ２晶体有两种络合行为，类似于邻苯二甲酸二异丁酯。另外，水对羧基与ＭｇＣｌ２的络合具有抑制作用。IR spectroscopy is used to investigate the intermediate products appeared in various stages of the preparation of the SG high activity supported polyproplene catalyst. It is interesting to find that naphthalic anhydride (PA) acts as a precipitant for the precipitation of MgCI, crystals and disappears when the precipitation for is completed. There are two types of coordination center in MgCl2 crystal.PA reacts with MgCl2 alcoholate to form diester, similar to the complexing of diisobutyl phathalate with MgCl2 Moreover,water may have an inhibition effect on the complexing of carbonyl group with MgCl2.

关 键 词：催化剂 聚丙烯 氯化镁 

分 类 号：TQ426.65[化学工程]