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Deposition of small Cu, Ag and Au particles on reduced SiO2
(Elsevier Science, 2006-09)
In this work, the adsorption of Mn (M: Cu, Ag, Au; n=1-3) particles on the ≡Si-O· defect of a SiO2 surface is studied in the framework of density functional theory. A charge transfer from the metal particle to the support ...
A quantum-chemical study of CO adsorption on small Cu particles supported on reduced SiO2
(Elsevier Science, 2005-06)
The adsorption of CO over monomer, dimer and trimer of copper deposited on a SiO defect on silica surface was studied using the density functional theory formalism (DFT). The results indicate that the CO adsorption strength ...
Monoliths washcoated with AuCu catalysts for CO removal in an ethanol fuel processor: Effect of CeO2–SiO2 dual support on the catalytic performance and reactor costMonolitos revestidos con catalizadores de AuCu para la eliminación de CO en un procesador de combustible de etanol: efecto del soporte dual CeO2-SiO2 en el rendimiento catalítico y el costo del reactor
(International Journal of Hydrogen Energy, 01/06/2020)
CO removal from a syngas was evaluated in a single catalytic unit using structured AuCu/CeO2–SiO2 catalysts. Initially, AuCu/CeO2–SiO2 powder catalysts with several SiO2 loadings (0–100 mol%) were assessed. SiO2 addition ...
NCO adsorption over SiO2 and Cu/SiO2 cluster models from density functional theory
(Elsevier Science, 2004-11)
The adsorption of NCO over two types of surface defects on silica surface, Si• and Si-O•, were studied using the density functional theory formalism. The adsorption is preferred on Si• site in agreement with experimental ...
Simultaneous use of CO and naphthalene for the reduction of NO on potassium promoted copper catalyst supported on Ce/TiO2-SiO2 and in the presence of oxygen
(Elsevier, 2019)
A set of Cu/Ce/TiO2-SiO2 and K/Cu/Ce/TiO2-SiO2 catalysts was used for the simultaneous use of CO and naphthalene as reducing agents for the reduction of NO in the presence of oxygen. Only 5% of TiO2 greatly increase the ...
CuO and CeO2 catalysts supported on Al2O3, ZrO2, and SiO2 in the oxidation of CO at low temperature
(ELSEVIER, 2008-07-01)
The effect of the support, Al2O3, ZrO2, and SiO2, on the activity for CO oxidation of a series of CuO and CeO2 monometallic and bimetallic catalysts was studied. The catalysts were prepared by coimpregnation of the support ...
Estudio comparativo de SiO₂-60-Cu y SBA-15-Cu, como catalizadores en una reacción multicomponentes
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2018)
Este estudio incide principalmente en la comparación de dos materiales de sílice amorfos con distintas propiedades texturales; la sílica comercial de maya 60 y el SBA-15, los cuales se modificaron vía impregnación húmeda ...