Synthesis and Substituent Effects of Ansa rac-MeSi(2-Me-4Ph-Ind)ZrCl2 Derivatives on Olefin Polymerization

被引:0
作者
Jia, Yusen [1 ]
Wang, Kefeng [2 ]
Lei, Junyu [2 ]
Lin, Long
Long, Huijuan [1 ]
Hao, Haijun [1 ]
机构
[1] Beijing Univ Chem Technol, Coll Chem, Beijing 100029, Peoples R China
[2] PetroChina Co Ltd, Petrochem Res Inst, Beijing 100195, Peoples R China
关键词
zirconocene catalysts; 1-hexene; polymerization; substituent effect; METALLOCENE CATALYSTS; PROPENE POLYMERIZATION; COPOLYMERIZATION; TEMPERATURE; ZIRCONOCENE; PROPYLENE; ETHYLENE;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Ansa rac-MeSi(2-Me-4-Ar-Ind)ZrCl2 (Ar = Ph, Ind = indenyl, 7a) is an industrial metallocene catalyst commonly used for propylene polymerization. This study investigated the effects of substituents at the para position of the Ar group on catalyst performance. Four derivatives of 7b (p-MePh), 7c (p-OMe), 7d (p-tBuPh), 7e (p-F-Ph) were successfully synthesized through three methods. The influence of these substitutions on catalyst activity was evaluated in 1-hexene polymerization with 7a-e in toluene using solid methylaluminoxane as a co-catalyst. Derivative 7c exhibited the highest catalytic activity and stereoselectivity, achieving an isotacticity of 94%, indicating that electron-donating substituent enhancing catalytic reactivity.
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页数:194
相关论文
共 27 条
[1]   Effect of the nature of metallocene complexes of group IV metals on their performance in catalytic ethylene and propylene polymerization [J].
Alt, HG ;
Köppl, A .
CHEMICAL REVIEWS, 2000, 100 (04) :1205-1221
[2]   Chiral ansa metallocenes with Cp ring-fused to thiophenes and pyrroles: Syntheses, crystal structures, and isotactic polypropylene catalysts [J].
Ewen, JA ;
Elder, MJ ;
Jones, RL ;
Rheingold, AL ;
Liable-Sands, LM ;
Sommer, RD .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (20) :4763-4773
[3]   Propane polymerization with silica-supported metallocene/MAO catalysts [J].
Fink, G ;
Steinmetz, B ;
Zechlin, J ;
Przybyla, C ;
Tesche, B .
CHEMICAL REVIEWS, 2000, 100 (04) :1377-1390
[4]   The discovery of metallocene catalysts and their present state of the art [J].
Kaminsky, W .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2004, 42 (16) :3911-3921
[5]   Environmentally compatible polymerization of olefins by the use of metallocene catalysts [J].
Kaminsky, W .
CHEMOSPHERE, 2001, 43 (01) :33-38
[6]   New polymers by metallocene catalysis [J].
Kaminsky, W .
MACROMOLECULAR CHEMISTRY AND PHYSICS, 1996, 197 (12) :3907-3945
[7]   Controlling the Microstructure of Isotactic Polypropene by C2-Symmetric Zirconocene Polymerization Catalysts: Influence of Alkyl Substituents on Regio- and Stereocontrol [J].
Kuklin, Mikhail S. ;
Virkkunen, Ville ;
Castro, Pascal M. ;
Resconi, Luigi ;
Linnolahti, Mikko .
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2015, (26) :4420-4428
[8]  
Kulyabin P S, 2021, Dalton Trans, V18, P5991
[9]   ansa-Zirconocene Catalysts for Isotactic-Selective Propene Polymerization at High Temperature: A Long Story Finds a Happy Ending [J].
Kulyabin, Pavel S. ;
Goryunov, Georgy P. ;
Sharikov, Mikhail, I ;
Izmer, Vyatcheslav V. ;
Vittoria, Antonio ;
Budzelaar, Peter H. M. ;
Busico, Vincenzo ;
Voskoboynikov, Alexander Z. ;
Ehm, Christian ;
Cipullo, Roberta ;
Uborsky, Dmitry, V .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2021, 143 (20) :7641-7647
[10]   Ethylene-Propene Copolymerization with C1-symmetric ansa-Fluorenyl-zirconocene Catalysts: Effects of Catalyst Structure and Comonomer on Molar Mass [J].
Losio, Simona ;
Boggioni, Laura ;
Cornelio, Massimiliano ;
Razavi, Abbas ;
Tritto, Incoronata .
CHINESE JOURNAL OF POLYMER SCIENCE, 2020, 38 (03) :220-230