Synthesis of superparamagnetic carbon nanotubes immobilized Pt and Pd pincer complexes: highly active and selective catalysts towards cyclohexane oxidation with dioxygen
authors Machado, K; Mishra, J; Suzuki, S; Mishra, GS
nationality International
journal DALTON TRANSACTIONS
keywords MODIFIED SILICA-GEL; MOLECULAR-OXYGEN; SCHIFF-BASE; MAGNETIC NANOPARTICLES; DRUG-DELIVERY; FUNCTIONALIZATION; THIOAMIDE; ALKANES
abstract Single-walled carbon nanotubes (SWNTs) with Ni/Co have been prepared using an arc discharge technique and Ni/Co-carbon composite rods in an inert atmosphere and were surface modified using 3-aminophenyl trimethoxysilane. These NH2-functionalized magnetic carbon nanotubes have been used as a novel support for Pd-(II) and Pt-(II) pincer complexes immobilized as magnetic nano-catalysts. The morphology of the support and the catalysts have been characterized by IR, EPR, SEM, TGA, TEM, XRD, AAS and EDS analysis. These magnetic nano-catalysts have been tested on the industrially important cyclohexane (Cy-hx) oxidation with O-2 and significantly high TONs of 1678 to 1946 were achieved under solvent free and relatively mild conditions. The SWNTs/Pd catalyst provided the best conversion, 22.7%, but the SWNTs/Pt system also provided a good conversion of 20.7%.
publisher ROYAL SOC CHEMISTRY
issn 1477-9226
year published 2014
volume 43
issue 46
beginning page 17475
ending page 17482
digital object identifier (doi) 10.1039/c4dt02099e
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000344598200030
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