γ-Al2O3 particles form inevitably in liquid Al- alloys during liquid-handling and casting processes. Such oxide may act as potential nucleation sites solidification. Recent research revealed that native exhibit different potency for nucleating solid Al, which reduce the number of liquid. Chemical segregation at liquid/oxide interface modify substrates’ potency. In this paper, we investigated pr...

Atmospheric pressure discharge plasma has been studied and applied to environmental purification in recent years. We have been trying to purify diesel exhaust gas and we have verified that the combination of discharge plasma and honeycomb catalyst is quite effective for the exhaust treatment. However, complicated setup of high voltage power supplies and electrodes is required to generate stable...

The direct reductive amination of carbonyl compounds with NH3 and H2 is an alternative route to produce primary amines in practical production. The search for efficient and selective catalysts has attracted great interest. In the present work, the reductive amination of heptaldehyde with NH3 was investigated over a Ru-based catalyst. The product selectivities were found to be related with the s...

The work focuses on evaluating wet air oxidation and catalytic wet air oxidation technique to degrade refinery spent caustics (original COD is 250,781 mg/L) in a milder operation conditions (150-200 ̊C, 0.2-2.5MPa). The results show that: in non-catalyst WAO, the highest COD degradation conversion could reach about 75% when 200 ̊C, 2MPa oxygen and 300rpm were used. At every temperature, the react...

This work presents an application of thin aluminum oxide (Al2O3) films obtained using atomic layer deposition (ALD) for fine tuning the spectral response and refractive-index (RI) sensitivity of long-period gratings (LPGs) induced in optical fibers. The technique allows for an efficient and well controlled deposition at monolayer level (resolution ~ 0.12 nm) of excellent quality nano-films as r...

Cobalt catalysts supported on γ-alumina, ceria and γ-alumina-ceria, with 10 or 20%wt of cobalt load, prepared by the wet impregnation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), field emission transmission electron microscopy (FETEM), N2 adsorptiondesorption isotherms (BET/BJH methods), energy-dispersive X-ray spectroscopy (EDX), X-ray photoemission ...