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Support Functionalization with a Phosphine‐Containing Hyperbranched Polymer: A Strategy to Enhance Phosphine Grafting and Metal Loading in a Hydroformylation Catalyst
Author(s) -
Garcia Marco A. S.,
Heyder Rodrigo S.,
Oliveira Kelley C. B.,
Costa Jean C. S.,
Corio Paola,
Gusevskaya Elena V.,
dos Santos Eduardo N.,
Bazito Reinaldo C.,
Rossi Liane M.
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201600070
Subject(s) - hydroformylation , catalysis , phosphine , polymer chemistry , chemistry , organic chemistry , heterogeneous catalysis , materials science , rhodium
We present the design of a hydroformylation catalyst through the immobilization of air‐stable Rh nanoparticles (NPs) on a magnetic support functionalized with a hyperbranched polymer that bears terminal phosphine groups. The catalyst modification with the hyperbranched polymer improved the metal–support interaction, the metal loading, and the catalytic activity. The catalyst was active for the hydroformylation of natural products, such as estragole, and could be used in successive reactions with negligible metal leaching. The phosphine grafting played a key role in the recyclability of Rh NPs under hydroformylation conditions. The catalytic activity was maintained in successive reactions, even if the catalyst was exposed to air during each recovery procedure. The modification of the support with hyperbranched polyester allowed us either to increase the number of Rh active species or to obtain more active Rh species on the catalyst surface.