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Magnetic Nanoparticles of Ferrite Complex Oxides: A Cheap, Efficient, Recyclable Catalyst for Building the CN Bond under Ligand‐Free Conditions
Author(s) -
Zhang Rongzhao,
Miao Chengxia,
Shen Zhiqiang,
Wang Shoufeng,
Xia Chungu,
Sun Wei
Publication year - 2012
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.201100461
Subject(s) - citric acid , catalysis , calcination , nanoparticle , ferrite (magnet) , materials science , adsorption , magnetic nanoparticles , ligand (biochemistry) , desorption , magnetic separation , chemical engineering , inorganic chemistry , nuclear chemistry , chemistry , nanotechnology , organic chemistry , metallurgy , composite material , biochemistry , receptor , engineering
A series of magnetic nanoparticles of ferrite complex oxides were simply prepared by using a citric acid complex method and characterized by using XRD, FT‐IR spectroscopy, TEM, the BET nitrogen adsorption/desorption technique, and a vibrating sample magnetometer. The magnetic nanoparticles were used for the N‐arylation of nitrogen nucleophiles to form new CN bonds. CuFe 2 O 4 nanoparticles calcined at 850 °C exhibited the best activity with moderate to excellent yields under ligand‐free conditions. Notably, CuFe 2 O 4 is completely recoverable with an external magnet and can be reused eight times without significant loss of catalytic activity.