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Pd nanoparticles immobilized on PNIPAM–halloysite: highly active and reusable catalyst for Suzuki–Miyaura coupling reactions in water
Author(s) -
Hong Myeng Chan,
Ahn Hyunseok,
Choi Myung Chan,
Lee Yongwoo,
Kim Jongsik,
Rhee Hakjune
Publication year - 2014
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3103
Subject(s) - halloysite , chemistry , lower critical solution temperature , catalysis , nanocomposite , yield (engineering) , nanoparticle , solubility , chemical engineering , filtration (mathematics) , coupling reaction , polymer chemistry , nuclear chemistry , organic chemistry , polymer , composite material , materials science , copolymer , statistics , mathematics , engineering
Poly( N ‐isopropylacrylamide)–halloysite (PNIPAM‐HNT) nanocomposites exhibited inverse temperature solubility with a lower critical solution temperature (LCST) in water. Palladium (Pd) nanoparticles were anchored on PNIPAM‐HNT nanocomposites with various amounts of HNT from 5 to 30 wt%. These Pd catalysts exhibited excellent reactivities for Suzuki–Miyaura coupling reactions at 50–70 °C in water. In particular, Pd anchored PNIPAM/HNT (95:5 w/w ratio) nanocomposites showed excellent recyclability up to 10 times in 96% average yield by simple filtration. Copyright © 2014 John Wiley & Sons, Ltd.