8-9th August, 2008 School of Materials Science & Nanotechnology,Jadavpur University
Facile synthesis of palladium nanoparticles in Y-zeolite matrix: An efficient catalyst for Heck coupling reaction
Buddhadeb Dutta, Sreyashi Jana, Rajesh Bera, Subratanath Koner*
Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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Abstract
A new facile and reliable route for synthesis of nano-sized Pd(0) particles onto zeolitic matrix has been developed. [Pd(NH3)4]2+ ions have been first immobilized in NaY matrix by ion exchange, then on reaction with hydrazine hydrate [Pd(NH3)4]2+ ions were directly reduced to nano-sized Pd(0) particles almost instantaneously. Transmission electron microscopic analysis reveals that well separated nano-sized (10-20 nm) palladium(0) particles have been formed on the surface of the zeolite crystals. X-ray powder diffraction analysis supports that the particles are highly dispersed in the zeolite matrix. The prepared nano-composite is found to be highly catalytically active in a variety of Heck cross-coupling reactions.
Figure 1. Transmission electron micrographs showing Pd nanoparticle in NaY matrix.
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