摘要
聚烯烃催化剂载体粒子的宏观形态在聚合过程中控制着聚合物产品粒子的宏观形态，并影响聚合催化剂的催化性能和聚合物产品性能。本文通过对催化剂载体Ｔ－１型硅胶宏观形态及其受热活化影响的研究，发现了活化过程中硅胶粒子存在着破碎和聚结现象。破碎粒子主要是粒径８０μｍ以上的大粒子，聚结粒子主要是１０μｍ以下的小粒子。还阐明了硅胶活化过程中，粒子的破碎、聚结以及硅胶粒子的流动分散性能、粒径分布、平均粒径、比表面积、孔体积。
In olefin polymerization process, the macrostructure of the catalysts supports control the morphology of the polymer product, also affect the properties of both the catalysts and the product. This paper focused on the macrostructure of the T 1 type silica support and the effects of Thermo activation. It was found that both particle fracture and agglomeration occurred during the thermo activation process. The diameter of fracture particles and agglomeration particles were over 80μm and under 10μm respectively. It has been made clear that how the thermo activation process affected the particle size distribution、 average particle size、 BET surface area、 pore volume and average pore size.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1997年第3期231-238,共8页
Chemical Reaction Engineering and Technology
基金
国家自然科学基金
关键词
聚烯烃
催化剂载体
硅胶
热活化
Polyolefin catalysts supports
Silica gel
Thermo activation
