Buscar
Mostrando ítems 1-10 de 213
Synthesis of a Small Library of Imidazolidin-2-ones using Gold Catalysis on Solid Phase
(American Chemical Society, 2016-08)
An efficient and high-yielding solid phase synthesis of a small library of imidazolidin-2-ones and imidazol-2-ones was carried out employing a high chemo- and regioselective gold-catalyzed cycloisomerization as a key step. ...
Gold-catalyzed addition of β-ketoesters to alkenes: Influence of electronic and steric effects in the reaction outcome
(Molecular Diversity Preservation International, 2018-03)
The gold-catalyzed intermolecular hydroalkylation of olefins with β-ketoesters represents a conceptually attractive and useful synthetic tool; however, it has been scarcely applied, remaining a challenge for chemists. The ...
DRIFT+MS Quantitative Study of the CO Oxidation on Gold supported on Ceria
(VI San Luis School and Conference on Surfaces, Interfaces and Catalysis, 2019)
The steps of the CO oxidation reaction on a Au/CeO2 catalyst was quantitatively investigated using a novel DRIFT cell/micro-reactor. The design and characterization of this DRIFT cell/micro-reactor, coupled with mass ...
Spontaneous Adsorption of Gold Nanoparticles by Polyelectrolyte Thin Films
(AMER SCIENTIFIC PUBLISHERS, 2012)
Nanocomposed films constituted by gold nanoparticles immobilized onto polyelectrolytes were obtained and studied. To obtain the films, amino terminated silicon wafer surfaces were put in contact with aqueous solution of ...
Gold nanoparticles supported in zirconia-ceria mesoporous thin films: A highly active reusable heterogeneous nanocatalyst
(American Chemical Society, 2015-01)
Gold nanoparticles (NP) trapped in the mesopores of mixed zirconia-ceria thin films are prepared in a straightforward and reproducible way. The films exhibit enhanced stability and excellent catalytic activity in nitro-group ...
Synergetic Effect of Bimetallic Au-Ru/TiO2 Catalysts for CO and Methanol Complete Oxidation
(Université Pierre et Marie Curie, 2019)
It is well known that gold nanoparticles supported on metal oxides are active in various reactions of environmental importance.1 Particularly, supported Au nanoparticles is well known as very efficient catalysts for CO ...
Fully Reversible Metal Deactivation Effects in Gold/Ceria-Zirconia Catalysts: Role of the Redox State of the Support
(Wiley Vch Verlag, 2010-12)
Strong and reversible modification of the chemical properties of supported Au nanoparticles caused by alternating oxidizing (a and c) and reducing (b) pretreatment of Au/CeO2-ZrO2 catalysts were revealed by a methodology ...
Gold nanoparticle catalysis of the cis-trans isomerization of azobenzene
(Royal Society of Chemistry, 2013-08)
Ablated, “pseudo-naked” gold nanoparticles (AuNPs) catalyze the cis–trans isomerization of substituted azobenzenes. para-Substitution was found to affect the rate of isomerization, suggesting the participation of AuNP-mediated ...