Title: Facile synthesis of palladium nanoparticles in Y-zeolite matrix: an efficient catalyst for Heck coupling reaction

Authors: Buddhadeb Dutta, Sreyashi Jana, Rajesh Bera, Subratanath Koner

Addresses: Department of Chemistry, Jadavpur University, Kolkata, 700 032, India. ' Department of Chemistry, Jadavpur University, Kolkata, 700 032, India. ' Department of Chemistry, Jadavpur University, Kolkata, 700 032, India. ' Department of Chemistry, Jadavpur University, Kolkata, 700 032, India

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 immobilised in NaY matrix by ion exchange, then upon reaction with hydrazine hydrate [Pd(NH₃)₄] ₂₊ ions were directly reduced to nano-sized Pd(0) particles almost instantaneously. Transmission electron microscopic (TEM) analysis reveals that well separated nano-sized (10-20 nm) palladium(0) particles have been formed onto 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.

Keywords: Pd nanoparticles; Y-zeolite matrix; zeolite; Heck reactions; heterogeneous catalysis; palladium; nanotechnology; nanomanufacturing; cross coupling.

DOI: 10.1504/IJNM.2009.027506

International Journal of Nanomanufacturing, 2009 Vol.3 No.4, pp.337 - 350

Published online: 28 Jul 2009 *

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