封面图片
2018年, 第12卷 第3期
(Walter Kaminsky, pp. 555-563)
The cover page shows a computer model of a unit structure of methylaluminoxane (MAO). The unit structure contains 4 aluminum atoms, separated by 3 oxygen atoms and 6 methyl groups and associate to larger cages. MAO is the most important cocatalyst to activate transition metal complexes such as metallocens for the polymerization of olefins. The metallocene/MAO catalyst is soluble in hydrocarbons and can be varied by changing the molecular structure of the metal complex (single site catalyst). The activity is about 10 times higher than that of classical Ziegler-Natta catalysts. Today more than 10 million tons of polyethylene and ethylene/propylene copolymers are produced per year by MAO containing catalysts.
[展开] ...
ISSN 2095-0179 (Print)
ISSN 2095-0187 (Online)
CN 11-5981/TQ
Postal Subscription Code 80-969 Formerly Known as Frontiers of Chemical Science and Engineering in China 2018 Impact Factor: 2.809