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