异戊二烯聚合催化体系Ln(naph)<sub>3</sub>-Al(i-C<sub>4</sub>H<sub>9</sub>) <sub>3</sub>-Al<sub>2</sub>(C<sub>2</sub>H<sub>5</sub>) <sub>3</sub>Cl<sub>3</sub>中稀土金属离子的价态

THE VALENCE STATE OF RARE EARTH METAL IONS IN THE CATALYST SYSTEM Ln(naph)₃-Al(i-C₄H₉)₃-Al₂(C₂H₅)₃Cl₃ FOR POLYMERIZATION OF ISOPRENE

WANG FO-SONG, ZHAO XIAO-JIANG, JIANG CHENG-DE, GONG ZHI

Acta Chimica Sinica . 1979, (2): 111 -118 .