期刊
JOURNAL OF CATALYSIS
卷 226, 期 1, 页码 235-239出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2004.05.008
关键词
nickel-phosphole; ethylene; oligomerization
2-(2-Pyridyl)phospholes have been evaluated as ligands for the nickel-catalyzed oligomerization of ethylene. Under mild homogeneous reaction conditions, high catalytic activities (> 15 cycles per second) were recorded. The selectivity depends on the ethylene pressure. At 41 bar, high C-4 fraction contents (until 97%) and high 1-butene selectivities (80% of the C4 fraction) were reached. This behavior is interpreted as a consequence of the steric hindrance of the intermediate cationic 2-pyridylphosphole nickel hydrides. (C) 2004 Elsevier Inc. All rights reserved.
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