Supported metal oxide double active center polyethylene catalyst, process for preparing the same and use thereof

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United States of America Patent

PATENT NO 9725530
SERIAL NO

14395487

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Abstract

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The present invention relates to a supported hybrid vanadium-chromium-based catalyst, characterized in the catalyst is supported on a porous inorganic carrier and a V active site and a inorganic Cr active site are present on the porous inorganic carrier at the same time. The present invention further relates to a process for producing a supported hybrid vanadium-chromium-based catalyst. The invention also provides the preparation method of the catalyst, titanium or fluorine compounds, vanadium salt and chromium salt according to the proportion, different methods of sequence and load on the inorganic carrier, after high temperature roasting, still can further add organic metal catalyst promoter prereduction activation treatment on it. The catalyst of the present invention can be used for producing ethylene homopolymers and ethylene/α-olefin copolymers. The hybrid vanadium-chromium-based catalyst can have high activity and produce polyethylene polymers having the properties of broad molecular weight distribution (Part of the products are bimodal distribution) and excellent α-olefin copolymerization characteristic.

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Patent Owner(s)

Patent OwnerAddress
EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY200237 NO 130 MEILONG ROAD SHANGHAI XUHUI DISTRICT SHANGHAI CITY SHANGHAI CITY 200237

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Ruihua Shanghai, CN 8 62
Dong, Xuan Shanghai, CN 10 75
He, Xuelian Shanghai, CN 6 56
He, Yun Shanghai, CN 140 1400
Liu, Boping Shanghai, CN 6 59
Liu, Weiwei Shanghai, CN 62 1374
Liu, Zhen Shanghai, CN 414 5359
Sun, Qiaoqiao Shanghai, CN 1 55
Wang, Lisong Shanghai, CN 2 55
Xue, Xin Shanghai, CN 40 460

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