负载型烯烃聚合催化剂无机物载体修饰新方法

An improved modification method of catalyst support for olefin polymerization

研究了反应时间、BF3 (三氟化硼 )加入量和Al2 O3 (氧化铝 )预处理温度对BF3 修饰Al2 O3 表面的影响 .结果表明BF3 对Al2 O3 的表面修饰主要是通过表面化学反应和物理吸附完成的 .两种方式发生的可能性大小主要取决于Al2 O3 表面羟基的量 .

The effect of contact time, BF-3 and pretreatment temperature of Al-2O-3 were studied.It was found that chemical reaction and physical absorption occured between BF-3 and Al-2O-3. Their frequency depended on OH concentration on Al-2O-3 surface.