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Highly Efficient Hydroformylation of 1‐Hexene over an ortho ‐Metallated Rhodium(I) Complex Anchored on a 2D‐Hexagonal Mesoporous Material
Author(s) -
Nandi Mahasweta,
Mondal Paramita,
Islam Manirul,
Bhaumik Asim
Publication year - 2011
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201000844
Subject(s) - hydroformylation , chemistry , mesoporous material , rhodium , 1 hexene , mesoporous silica , olefin fiber , catalysis , tetraethyl orthosilicate , mesoporous organosilica , heptanal , amine gas treating , organic chemistry , polymer chemistry , aldehyde , ethylene
The hydroformylation reaction is an important class of reaction as it enhances the carbon chain length of an olefin molecule. Rh I complexes are conventionally used as the catalyst for this reaction although they possess severe drawbacks with respect to separation and recycling. A phenyl‐functionalised 2D‐hexagonal mesoporous silica material has been synthesised by a surfactant templating pathway. The phenyl group of this mesoporous material was functionalised through nitration, followed by its reduction to the amine derivative. The amine group was further subjected to Schiff‐base condensation, and the Rh I complex was then heterogenised over its surface to yield the ortho ‐metallated complex anchored on the mesoporous silica matrix. The materials have been characterised by using powder X‐ray diffraction, transmission electron microscopy and nitrogen adsorption/desorption studies. The Rh I ‐loaded mesoporous material acts as a very efficient catalyst for the hydroformylation reaction of 1‐hexene and exhibits high selectivity towards the formation of n ‐heptanal at 343 K in the presence of H 2 /CO at 50 bar pressure.