Gold nanoparticles immobilized on lipoic acid functionalized SBA-15: Synthesis, characterization and catalytic applications

Authors: Narani Anand, Pochamoni Ramudu, Kannapu Hari Prasad Reddy, Kamaraju Seetha Rama Rao, Bharatam Jagadeesh, Vemulapalli Sahithya Phani Babu, David Raju Burri

Abstract:
Gold nanoparticles immobilized on lipoic acid functionalized SBA-15 (SBA-LAG) catalyst was synthesized via functionalization of SBA-15 with propylamine followed by tethering of lipoic acid and immobilization of gold nanoparticles. The structural and texctural characteristics of the catalyst have been determined by N₂ adsorption–desorption and low-angle XRD. The successive attachment of spacers has been characterized by ¹³C CP-MAS NMR, FT-IR and TG-DTA. The size, shape, surface composition and oxidation state of gold nanoparticles have been determined by XRD, TEM and XPS techniques. SBA-LAG catalyst is found to be an efficient solid catalyst for producing good to excellent yields of propargylamines by condensing three-components such as (i) amine, (ii) aldehyde and (iii) alkyne in one-pot under solvent-free conditions.

Keywords:
SBA-15
Lipoic acid
Gold nanoparticles
Propargylamines
Solvent-free system

Published in: Applied catalysis A: General  (Volume 454, Pages 1-172, 15 March 2013)

Publisher: Elsevier

ISSN Information: 0926-860X

Gold nanoparticles immobilized on lipoic acid functionalized SBA-15: Synthesis, characterization and catalytic applications

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