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A nickel tetra‐coordinated complex as catalyst in heterogeneous hydrogenation
Author(s) -
L'Argentière Pablo C.,
Cagnola Edgardo A.,
Cañón María G.,
Liprandi Domingo A.,
Marconetti Delia V.
Publication year - 1998
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199804)71:4<285::aid-jctb854>3.0.co;2-h
Subject(s) - catalysis , tetrahydrothiophene , nickel , cyclohexene , sulfur , thiophene , tetra , chemistry , inorganic chemistry , photochemistry , organic chemistry , medicinal chemistry
The [NiCl 2 (NH 2 (CH 2 ) 12 CH 3 ) 2 ] complex supported on γ‐Al 2 O 3 produces a catalyst which is considerably more active and sulfur‐resistant for the hydrogenation of cyclohexene carried out in mild conditions than a conventional catalyst obtained from acid solutions of NiCl 2 and even than the same complex unsupported. As determined by XPS, the active species is the complex itself, which is stable under the reaction conditions. The higher sulfur‐resistance is attributed to electronic and geometrical effects. The catalyst system is considerably more resistant to poisoning with thiophene than with tetrahydrothiophene. © 1998 SCI