Results 271 to 280 of about 138,401 (319)
Some of the next articles are maybe not open access.
Adsorption and spillover of hydrogen on Al2O3 and Pt/Al2O3
Applied Catalysis, 1987Abstract Hydrogen adsorption on alumina, Pt/Al 2 O 3 -Cl, and their mixtures at 500°C and under atmospheric pressure was studied using a volumetric technique. Alumina with and without chlorine adsorbed 0.054 cm 3 STP g −1 showing that chloride ions do not affect the adsorption.
J.C. Musso, J.M. Parera
openaire +1 more source
Journal of Catalysis, 2005
Abstract The simultaneous hydrodenitrogenation (HDN) of alkylamines and hydrodesulfurization (HDS) of alkanethiols, with the NH2 and SH groups attached to primary, secondary, and tertiary carbon atoms, were studied at 270–320 °C and 3 MPa over sulfided NiMo/Al2O3, CoMo/Al2O3, and Mo/Al2O3 catalysts.
Y ZHAO, R PRINS
openaire +1 more source
Abstract The simultaneous hydrodenitrogenation (HDN) of alkylamines and hydrodesulfurization (HDS) of alkanethiols, with the NH2 and SH groups attached to primary, secondary, and tertiary carbon atoms, were studied at 270–320 °C and 3 MPa over sulfided NiMo/Al2O3, CoMo/Al2O3, and Mo/Al2O3 catalysts.
Y ZHAO, R PRINS
openaire +1 more source
Effects of copper and Al2O3 particles on characteristics of Cu–Al2O3 composites
Materials & Design, 2010Abstract High-energy milling was used for production of Cu–Al 2 O 3 composites. The inert gas-atomized prealloyed copper powder containing 2 wt.%Al and the mixture of the different sized electrolytic copper powders with 4 wt.% commercial Al 2 O 3 powders served as starting materials.
Rajković, Višeslava M. +2 more
openaire +2 more sources
Calorimetric Study of Interaction Between Oxygen and β-Al2O3, β-Al2O3+Au and β-Al2O3+Pt
Journal of Thermal Analysis and Calorimetry, 2002In an attempt to improve the understanding of the electrochemical effects observed on an original potentiometric gas sensor, interactions of oxygen with the device were investigated. These calorimetric measurements have evidenced the existence of a weakly bounded endothermal oxygen species.
Guillet, Nicolas +2 more
openaire +2 more sources
R-Curves in Al2O3 - Al2O3/ZrO2 laminates
2005In order to better understand the fracture behavior of Al2O3-Al2O3/ZrO2 laminates, controlled crack growth experiments were carried out. The method proposed consists of a three-point bending test of a sandwich beam in which a notched specimen is located in between two metallic bars.
J Pascual, F Chalvet, T Lube, G de Portu
openaire +2 more sources
Applied Catalysis B: Environmental, 2013
Abstract Pt, Pd, Rh and V2O5 metallic monolith catalysts supported on Al2O3, Al2O3–TiO2 and Al2O3–CeO2 were examined in the oxidation of dichloromethane (DCM). To improve the selectivity towards HCl and to prevent catalysts’ deactivation, the water amount in the feed gas mixture was adjusted to 1.5 wt.%.
Pitkäaho, S. +4 more
openaire +2 more sources
Abstract Pt, Pd, Rh and V2O5 metallic monolith catalysts supported on Al2O3, Al2O3–TiO2 and Al2O3–CeO2 were examined in the oxidation of dichloromethane (DCM). To improve the selectivity towards HCl and to prevent catalysts’ deactivation, the water amount in the feed gas mixture was adjusted to 1.5 wt.%.
Pitkäaho, S. +4 more
openaire +2 more sources
The Journal of Chemical Thermodynamics, 2013
Abstract All available thermodynamic and phase diagram data for the condensed phases of the (Al 2 O 3 + Na 2 O), (Al 2 O 3 + Na 2 O + SiO 2 ), and (Al 2 O 3 + Na 2 O + AlF 3 + NaF) systems have been critically assessed. Model parameters for solid solutions and a single set of parameters for the liquid solution in the binary, ternary, and ternary ...
Guillaume Lambotte, Patrice Chartrand
openaire +1 more source
Abstract All available thermodynamic and phase diagram data for the condensed phases of the (Al 2 O 3 + Na 2 O), (Al 2 O 3 + Na 2 O + SiO 2 ), and (Al 2 O 3 + Na 2 O + AlF 3 + NaF) systems have been critically assessed. Model parameters for solid solutions and a single set of parameters for the liquid solution in the binary, ternary, and ternary ...
Guillaume Lambotte, Patrice Chartrand
openaire +1 more source
Acetone hydrogenation over co-precipitated Ni/Al2O3, Co/Al2O3 and Fe/Al2O3 catalysts
Journal of the Chemical Society, Faraday Transactions, 1998Co-precipitated Ni/Al2O3, Co/Al2O3 and Fe/Al2O3 catalysts containing 10–50 wt.% of metal are prepared and characterized by BET surface area, pore volume and XRD. Hydrogen chemisorption and oxygen uptake measurements are used to estimate the extent of reduction and the available surface metal sites. Acetone hydrogenation under vapour phase conditions is
Sankarasubbier Narayanan +1 more
openaire +1 more source
Impact Testing of Al2O3 and SiCw/Al2O3 Ceramics
1994A bar impact test procedure was used to study spallation of Al2O3 bars and dynamic fracture of Al2O3 and SiCw/Al2O3 bars. Fractography analysis of the spalled surface showed extensive intergranular fracture (90 to 95% area). Dynamic fracture studies of precracked Al2O3 and SiCw/Al2O3 bars showed that the dynamic initiation fracture toughness, KId, and ...
LR Deobald, AS Kobayashi
openaire +1 more source
Analytical investigations of β-Al2O3 and β″-Al2O3 crystals
Journal of Crystal Growth, 1992Abstract Crystals of the solid electrolytes Na + -β-alumina and Na + -β″-alumina have been synthesized by high temperature solution growth in Na 2 O rich fluxes between 1600 and 1700°C. Chemical analysis revealed varying compositions due to a solid solution for both materials. The mean compositions (Na 1.62 Al 11 O 17.31 for Na + -β-Al 2 O 3 and Na
F. Tietz, J. Koepke, W. Urland
openaire +1 more source