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FI Catalysts: A Molecular Zeolite for Olefin Polymerization
Author(s) -
Makio Haruyuki,
Ochiai Takashi,
Tanaka Hidetsugu,
Fujita Terunori
Publication year - 2010
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201000279
Subject(s) - chemistry , ethylene , catalysis , olefin fiber , selectivity , zeolite , transition metal , polymerization , olefin polymerization , molecule , polymer chemistry , photochemistry , organic chemistry , polymer
Abstract A bis(phenoxyimine) group 4 transition metal catalyst (now known as FI catalysts) can discern ethylene from a mixture of ethylene and propylene at more than 99% selectivity. Denisty function theory (DFT) calculations revealed a spatially confined reaction site in the transition states of the migratory insertion which is just the right size for an ethylene molecule but too small for a propylene one. The substituents adjacent to the phenoxy‐oxygens are of crucial importance in developing the size/shape‐selectivity.