Abstract
Well dispersed Pd-NiO nanoparticles (Pd-NiO NP’s) formed over zeolite-NaY was found to be highly efficient catalyst for the Suzuki-Miyaura cross-coupling reaction of aryl chlorides and phenylboronic acid derivatives. Exceptional CC coupling products up to 92% were obtained within short period of time with chlorobenzene and their derivatives under microwave irradiation. Cyclic voltammetry (CV) study predicted that the leached Pd-NiO species were the “true catalyst” in the CCl bond activation process. Insitu generation of active Pd(0) via a charge transfer transition from NiO→Pd(II) was confirmed from CV study and was believed to be the crucial step in CCl bond activation. Filtration and CV analysis suggested for quick re-deposition of Pd-NiO NP’s on zeolite-NaY surface and confirmed for the non-consumption of Ni(OH)2 species.
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