Buscar
Mostrando ítems 1-10 de 1676
The role of the coprecipitation sequence of salt precursors on the genesis of Cu-ZnO-Al2O3 catalysts. synthesis, characterization and activity for low temperature shift reaction
(1998-06)
Cu-ZnO-Al2O3 catalysts for the low-temperature water-gas shift reaction were prepared using methods of direct and reverse coprecipitation. The catalysts obtained were characterized by DRX, TPR, XPS, N2O chemisorption, ...
Infrared spectra of adsorbed ethene on the EUROPT-1 catalyst
(Facultad Experimental de Ciencias de la Universidad del Zulia, 2011)
Effect of the balance between Co(II) and Co(0) oxidation states on the catalytic activity of cobalt catalysts for Ethanol Steam Reforming
(Elsevier B.V., 2014-06-15)
Changes of the oxidation state of cobalt species during activation under H-2 gas and ethanol steam reforming reaction on Co/Al2O3 were investigated using time-resolved operando Quick-XAS analysis. Prior to activation and ...
The importance of copper placement in chiral catalysts supported on heteropolyanions: Lacunary vs external exchanged
(Elsevier, 2020-03-03)
Lacunary [PCuW11O39]5− species modified with chiral bis(oxazoline) leads to very poor results as catalyst in theenantioselective cyclopropanation, in contrast with the Cu-bis(oxazoline) complex exchanged on the Keggin[PW12O40]3− ...
Effect of the preparation method and calcination temperature on the oxidation activity of CO at low temperature on CuO–CeO2/SiO2 catalysts
(2013)
The effect of preparation method, either coimpregnation or sequential impregnation, and of calcination temperature (between 500 degrees C and 700 degrees C) of CuO-CeO2/SiO2 catalysts on the CuO-CeO2 interface and on their ...
Support effect over bimetallic ruthenium-promoter catalysts in hydrogenation reactions
(Elsevier Science SaLausanneSuíça, 2010)
Palladium, palladium-tin, and palladium-silver catalysts in the selective hydrogenation of hexadienes: TPR, Mossbauer, and infrared studies of adsorbed CO
(Academic Press IncSan DiegoEUA, 2000)
Role of catalyst preparation on determining selective sites for hydrogenation of dimethyl adipate over RuSn/Al2O3
(Elsevier Science BvAmsterdamHolanda, 2006)