Premium
Gram‐Scale Synthesis of Magnetically Separable and Recyclable Co@SiO 2 Yolk‐Shell Nanocatalysts for Phenoxycarbonylation Reactions
Author(s) -
Park Ji Chan,
Lee Hyun Ju,
Jung Hyun Seok,
Kim Mijong,
Kim Hae Jin,
Park Kang Hyun,
Song Hyunjoon
Publication year - 2011
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.201000318
Subject(s) - nanomaterial based catalyst , cobalt , materials science , catalysis , iodobenzene , chemical engineering , nanoparticle , nanomaterials , shell (structure) , nanotechnology , chemistry , composite material , organic chemistry , metallurgy , engineering
Co@SiO 2 yolk‐shell nanostructures were fabricated on a gram scale by simple hydrogen reduction of CoO@SiO 2 core‐shell nanoparticles without using an etching step. The cobalt core diameters were reduced by the lattice volume contraction of CoO to Co, forming vacancy between the cores and the silica shells. The Co@SiO 2 yolk‐shell nanocatalysts were employed for the phenoxycarbonylation of iodobenzene, and exhibited high activity and reusability. The magnetic property of the cobalt cores enabled the facile separation of catalysts from the products.