recent advances of the chromium-based catalysts developed
at home and abroad
were reviewed .From the incisive analysis based on the documents collected
and a longstanding debate over questions about chemical nature of the active site( s)
the oxidation state of active chromium
and the mechanism of initiation has been resoluted
it was concluded that chromium-based catalysts would continue to play an important role in ethylene industry and take up some fields in nanocomposite materials in coming years .
关键词
铬系催化剂乙烯齐聚聚合
Keywords
Chromium based catalystEthyleneOligomerizationPolymerization