Catalyst composition and process for ethylene oligomerization

US9266983B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Tonglin Li · Beijing, CN
• Mingfang Zheng · Beijing, CN
• Jun Liu · Dressendorf, DE
• Huaijie Wang · Beijing, CN
• Haiying Zhang · New York, US
• Weizhen Li · Beijing, CN
• Jilong Wang · Beijing, CN
• Yuling Piao · Beijing, CN

Key dates

• Filing date: Apr 16, 2014
• Grant date: Feb 23, 2016
• Expiry date: Apr 16, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present disclosure provides a catalyst composition for ethylene oligomerization including an imino ferrous complex shown in Formula (I) as the main catalyst, an aluminum-containing cocatalyst, water, and an organic solvent:According to the present disclosure, a higher oligomerization activity can be obtained with the catalyst composition than with a catalyst composition system in the prior art which contains no water. Moreover, when the catalyst composition according to the present disclosure is used, a high selectivity of α-olefins is obtainable. Besides, the catalyst composition according to the present disclosure can enable rapid initiation, stable operation, and good repeatability of the oligomerization reaction. According to the present disclosure, a high oligomerization activity can be obtained even at a rather low ratio of Al/Fe, or at a low reaction temperature.