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Synthesis of Bipyridine‐Stabilized Rhodium Nanoparticles in Non‐Aqueous Ionic Liquids: A New Efficient Approach for Arene Hydrogenation with Nanocatalysts
Author(s) -
Léger Bastien,
DenicourtNowicki Audrey,
Roucoux Alain,
OlivierBourbigou Hélène
Publication year - 2008
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200700341
Subject(s) - chemistry , nanomaterial based catalyst , ionic liquid , rhodium , sodium borohydride , catalysis , bipyridine , borohydride , nanoparticle , inorganic chemistry , aqueous solution , salt (chemistry) , ionic bonding , metal , organic chemistry , ion , chemical engineering , crystal structure , engineering
A new approach to stabilize metal nanoparticles with polynitrogen ligands in ionic liquids (ILs) is described. Zerovalent metal nanospecies in the size range of 2.0 nm were easily prepared in various ionic liquids by chemical reduction of a rhodium salt with an excess amount of sodium borohydride (NaBH 4 ) and efficiently stabilized by 2,2′‐bipyridine. The influence of the bipyridine ratio in various ILs according to the nature of the cation‐anion association was investigated. These nanocatalysts were evaluated in the hydrogenation of aromatic compounds in ILs under various catalytic conditions ( P =1–40 bar, T =20–80 °C).