制备条件对Ziegler-Natta催化剂性能的影响
Effect of preparation conditions on the performance of Ziegler-Natta catalyst
高金龙 1张建纲 2张眉 3李婧1
作者信息
- 1. 陕西工业职业技术学院,陕西咸阳 712000
- 2. 中国石油兰州石化分公司,甘肃兰州 730060
- 3. 陕西煤业化工技术研究院有限责任公司,陕西西安 710100
- 折叠
摘要
介绍了聚烯烃技术的核心关键是催化剂,其中催化剂的制备条件对催化剂的性能有较大的影响;主要考察了母液转移时间、TiCl4 与MgCl2 物质的量比、内给电子体(ID)与MgCl2 物质的量比、陈化反应温度等对Ziegler-Natta(Z-N)聚烯烃催化剂性能的影响.结果表明,母液转移时间、载钛过程搅拌转速、TiCl4 与MgCl2 物质的量比对催化剂平均粒径影响较大;ID与MgCl2 物质的量比对催化剂的颗粒形貌及催化活性影响较大;陈化反应温度对催化剂的钛含量及催化活性影响较大.
Abstract
The core key of polyolefin technology is the catalyst,and the preparation conditions of the catalyst have a significant impact on its performance.The main factors affecting the performance of Ziegler Natta(Z-N)polyolefin catalysts are investigated,including the transfer time of the mother liquor,the molar ratio of TiCl4 to MgCl2,the molar ratio of internal electron donors(ID)to MgCl2 substances and the aging reaction temperature.The results show that the transfer time of the mother liquor,the stirring speed of the titanium loading process and the molar ratio of TiCl4 to MgCl2 have a significant impact on the average particle size of the catalyst.The molar ratio of ID to MgCl2 has a significant impact on the particle morphology and catalytic activity of the catalyst.The aging reaction temperature has a significant impact on the titanium content and catalytic activity.
关键词
钛镁系/Z-N催化剂/聚烯烃/粒度/催化剂性能Key words
titanium-magnesium series/Z-N catalyst/polyolefin/particle size/catalytic performance引用本文复制引用
基金项目
陕西工业职业技术学院科研支撑项目(2021YKYB-058)
出版年
2024
NETL
NSTL
万方数据