Journal
APPLIED CATALYSIS A-GENERAL
Volume 462, Issue -, Pages 39-45Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2013.04.034
Keywords
Suzuki cross-coupling; Palladium and Palladium-gold catalysts; Mesoporous molecular sieves
Categories
Funding
- CNPq
- PRONEX
- FAPEMIG
- FAPERGS
- INCT-Catalise
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Palladium and palladium-gold containing siliceous-MCM-41 and sol-gel palladium and palladium-gold silica composites have been prepared. The catalytic performance of incorporated Pd/MCM-41, Au-Pd/MCM-41 and Pd and Au-Pd/SiO2 sol-gel catalysts for the Suzuki-Miyaura cross-coupling reaction was determined and the influence of the matrix and the catalyst composition on the catalytic activity were also studied. The catalysts were characterized by N-2 physisorption (BET/BJH methods), X-ray diffraction, temperature programmed reduction analysis, H-2 chemisorption, atomic absorption spectrophotometry and Raman spectroscopy. The silica-containing palladium and palladium-gold catalysts prepared using the MCM-41 matrix showed greater catalytic activity than using the conventional sol-gel method; however, gold had a significant influence on this reaction. The catalyst did not undergo metal leaching and could be easily recovered and re-used (reused). (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
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