Hydrogen production via steam reforming of biomass derived oxygenates is a promising environmental alternative to the use fossil fuels. The ethanol reaction investigated over Ni and Rh based catalysts supported on ZrO2-La2O3 CeO2-ZrO2-La2O3 mixed oxides, aiming at elucidation role metal support in mechanism. versus shown be highly active more selective with no methane under all conditions studi...

Nanosized composites CeO2–Ag, La2O3–Ag, and TiO2–Ag are a class of nanomaterials suitable for photocatalysis, optical devices, photoelectrochemical elements. Further, nanocomposites with several wt.% silver can be used as creating materials pathogenic virus inactivation pandemic-neutralizing potential. Thus, prospective due to their biological activity. In the present work, were synthesized by ...

Cracking in La(Fe,Si)13-based magnetocaloric materials has been observed to predominantly form around La-rich (La2O3) particles and pose a threat their long-term structural integrity. To understand the formation of these cracks, FIB cross-sectional polishing followed by SEM characterisation was employed study local microstructural evolution after air exposure. Results suggest that volume expans...

Lanthanun oxide (La2O3) is a lanthanum chemical compound incorporates sensible anionic complexing ability; however, it lacks stability at low pH scale. Biochar fibers will give the benefit of their massive space and plethoric uses on surface to support metal compound. Herein, wet spinning technology was used load La3+ onto sodium alginate fiber, convert into La2O3 through carbonization. The La2...

We report on the defect generation under constant voltage stress in La2O3/HfO2 gate stacks grown on Germanium (001) substrates by molecular beam deposition utilizing a stress and sense technique. A voltage range from 0.5V up to 2.4V was used for the measurements. At low applied gate voltages, the stress induced current decrease could be explained by a field lowering model due to charge trapping...

The temperature e ect upon infrared-to-visible frequency upconversion uorescence emission in o -resonance infrared excited Yb-sensitized rare-earth doped optical glasses is theoretically and experimentally investigated. We have examined samples of Er3+/Yb-codoped Ga2S3:La2O3 chalcogenide glasses and germanosilicate optical bers, and Ga2O3:La2O3 chalcogenide and uoroindate glasses codoped with P...

−− Rh, Ni and Rh-Ni catalysts were prepared by wet impregnation of La2O3. The Rh content was modified but the Ni loading was kept constant at 2 wt%. The solids were calcined at 823 K in air flow and were reduced at 973 K in flowing hydrogen. The activity, stability, and residue formation during the CO2 reforming of CH4, of all the catalysts were tested in a fixed-bed reactor. Those with low car...

High-k gate dielectrics are used to suppress excessive transistor gate leakage and power consumption could speed up the introduction of metal gates in complementary metal oxide semiconductor (CMOS) transistors. Many new oxides are being evaluated as gate dielectrics, such as Al2O3, Y2O3, La2O3, Gd2O3, HfO2, ZrO2, and TiO2, BaZrO3, ZrSiO4 and HfSiO4. Ru, RuO2 and SrRuO3 gate electrodes grown on ...