Liquid coordination complexes: a new class of Lewis acids as safer alternatives to BF sub(3) in synthesis of polyalphaolefins

Liquid coordination complexes (LCCs) are a new class of liquid Lewis acids, prepared by combining an excess of a metal halide (e.g. GaCl sub(3)) with a basic donor molecule (e.g. amides, amines or phosphines). LCCs were used to catalyse oligomerisation of 1-decene to polyalphaolefins (PAOs). Molecul...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2015-03, Vol.17 (3), p.1831-1841
Main Authors: Hogg, James M, Coleman, Fergal, Ferrer-Ugalde, Albert, Atkins, Martin P, Swadzba-Kwasny, Malgorzata
Format: Article
Language:English
Subjects:
Coordination compounds
Lewis acid
Liquids
Metal halides
Molecular weight distribution
Natural gas
Phosphines
Viscosity
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Summary:Liquid coordination complexes (LCCs) are a new class of liquid Lewis acids, prepared by combining an excess of a metal halide (e.g. GaCl sub(3)) with a basic donor molecule (e.g. amides, amines or phosphines). LCCs were used to catalyse oligomerisation of 1-decene to polyalphaolefins (PAOs). Molecular weight distribution and physical properties of the produced oils were compliant with those required for low viscosity synthetic (Group IV) lubricant base oils. Kinematic viscosities at 100 degree C of ca. 4 or 6 cSt were obtained, along with viscosity indexes above 120 and pour points below -57 degree C. In industry, to achieve similar properties, BF sub(3) gas is used as a catalyst. LCCs are proposed as a safer and economically attractive alternative to BF sub(3) gas for the production of polyalphaolefins.
ISSN:1463-9262
1463-9270
DOI:10.1039/c4gc02080d