Buscar
Mostrando ítems 21-30 de 135
Artículo
Magnetometry and electron paramagnetic resonance studies of phosphine- and thiol-capped gold nanoparticles
(American Institute of Physics, 2010)
In the last years, the number of studies performed by wholly independent research groups that confirm the permanent magnetism, first observed in our research lab, for thiol-capped Au nanoparticles (NPs) has rapidly increased. ...
Artículo
Exalted photocatalytic activity of tetragonal BiVO4 by Er 3+ doping through a luminescence cooperative mechanism
(Royal Society of Chemistry (Great Britain), 2014)
Er-doped BiVO4 are synthesized by means of a surfactant free microwave assisted hydrothermal method having good photoactivities under sun-like excitation for the degradation of methylene blue. From the structural and ...
Artículo
Influence of the O2/CO ratio and the presence of H2O and CO2 in the feed-stream during the preferential oxidation of CO (PROX) over a CuOx/CeO2-coated microchannel reactor
(Elsevier, 2013)
The catalytic performance of a CuOx/CeO2 powder catalyst and that of a microchannel reactor or microreactor (MR) coated with the same solid was determined and compared. The catalytic activity measurements were carried out ...
Artículo
Characterisation of Co@Fe3O4 core@shell nanoparticles using advanced electron microscopy
(Royal Society of Chemistry, 2013)
Cobalt nanoparticles were synthesised via the thermal decomposition of Co2(CO)8 and were coated in iron oxide using Fe(CO)5. While previous work focused on the subsequent thermal alloying of these nanoparticles, this study ...
Artículo
Characterization of mechanosynthesized Bi1−xSmxFeO3 samples unencumbered by secondary phases or compositional inhomogeneity
(Elsevier, 2017)
High-quality samples, in terms of phase purity and dielectric properties, of composition Bi1−xSmxFeO3 (0.05 ≤ x ≤ 0.20) have for the first time been prepared by mechanosynthesis. Close inspection of the powder diffraction ...
Artículo
Pyrolysis kinetics of ethylene-propylene (EPM) and ethylene-propylene-diene (EPDM)
(Elsevier, 2013)
The thermal degradation kinetics of several ethylene-propylene copolymers (EPM) and ethylene-propylene-diene terpolymers (EPDM), with different chemical compositions, have been studied by means of the combined kinetic ...
Artículo
Hydrogen production by methanol steam reforming on NiSn/MgO-Al 2O3 catalysts: The role of MgO addition
(Elsevier, 2011)
The effect of the magnesia loading on the surface structure and catalytic properties of NiSn/MgO-Al2O3 catalysts for hydrogen production by methanol steam reforming has been investigated. The catalysts have been obtained ...
Artículo
On the microstructure of thin films grown by an isotropically directed deposition flux
(American Institute of Physics, 2010)
The influence of isotropically directed deposition flux on the formation of the thin film microstructure at low temperatures is studied. For this purpose we have deposited TiO2 thin films by two different deposition ...
Artículo
Influence of catalytic graphitization on mechanical properties of carbonized biocarbon
(Russian Academy of Sciences, 2014)
The uniaxial compression strength and the deformation characteristics of beech-derived biocarbon, partially graphitized by the use of Ni-catalyst in the process of carbonization at different temperatures, have been measured ...
Artículo
New insights on the kinetic analysis of isothermal data: The independence of the activation energy from the assumed kinetic model
(American Chemical Society, 2015)
Isothermal experiments are widely employed to study the kinetics of solid-state reactions or processes to extract essential kinetic information needed for modeling the processes at an industrial scale. The kinetic analysis ...