Speziali, Marcelo GomesSilva, Anderson Gabriel Marques daMiranda, Débora Michelini Vaz deMonteiro, Adriano LisboaRobles Azocar, Patrícia Alejandra2015-04-172015-04-172013SPEZIALI, M. G. et al. Air stable ligandless heterogeneous catalyst systems based on Pd and Au supported in SiO2 and MCM-41 for Suzuki–Miyaura cross-coupling in aqueous médium. Applied Catalysis. A, General, v. 462-46, p. 39-45, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0926860X1300238X>. Acesso em: 02 fev. 2015.0926-860Xhttp://www.repositorio.ufop.br/handle/123456789/5131Palladium 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 N2 physisorption (BET/BJH methods), X-ray diffraction, temperature programmed reduction analysis, H2 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).en-USSuzuki cross-couplingPalladium and Palladium-gold catalystsMesoporous molecular sievesArtigo publicado em periodicoThis article is published under the terms of the Creative Commons Attribution-NonCommercial-No Derivatives License (CC BY NC ND). Fonte: o próprio artigo.https://doi.org/10.1016/j.apcata.2013.04.034