Topic
Wet oxidation
About: Wet oxidation is a research topic. Over the lifetime, 3094 publications have been published within this topic receiving 61536 citations.
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TL;DR: In this paper, nonnoble metal Ni with different loadings was examined for catalytic wet air oxidation of phenol and the results showed non-uniform morphology of the nanocatalyst at lower Ni contents changed to homogenous morphology with spherical nano particles at higher Ni contents.
17 citations
TL;DR: The catalytic wet oxidation of four low molecular weight sodium salts of hydroxy carboxylic acids that can be found in alumina industry process water has been investigated using a representative synthetic solution as discussed by the authors.
Abstract: The catalytic wet oxidation: (WO) of four low molecular weight sodium salts of hydroxy carboxylic acids that can be found in alumina industry process water has been investigated using a representative synthetic solution. The most active catalyst: (CuO) catalysed the WO of the compounds studied predominantly via a homogenous complexation based reaction mechanism.
17 citations
TL;DR: In this paper, the formation of Ti n O 2 n −1 homological series phases and regular single crystals in oxide scale were observed in thin TiN PVD films (3 μm thickness) at 100 MPa water and 20-800 °C temperature range.
17 citations
TL;DR: In this paper, the authors compared several methods of deep desulfurization in alumina production process, and the costs of these methods were compared, and found that most of the S2−removed by adding sodium nitrate or hydrogen peroxide in digestion process.
Abstract: Several methods of deep desulfurization in alumina production process were studied, and the costs of these methods were compared. It is found that most of the S2−removed by adding sodium nitrate or hydrogen peroxide in digestion process, and in this way the effect of S2− on alumina product quality is eliminated. However, the removal efficiency of S2O32− in sodium aluminate solution is very low by this method. Both S2− and S2O32− in sodium aluminate solution can be removed completely by wet oxidation method in digestion process. The cost of desulfurization by wet oxidation is lower than by adding sodium nitrate or hydrogen peroxide. The results of this research reveal that wet oxidation is an economical and feasible method for the removal of sulfur in alumina production process to improve alumina quality, and provide valuable guidelines for alumina production by high-sulfur bauxite.
17 citations
TL;DR: In this paper, the influence of temperature and water vapor on the high temperature oxidation of alloy 282 was investigated using X-ray diffraction, scanning electron microscope and focused ion beam.
Abstract: The influence of temperature and water vapor on the high temperature oxidation of alloy 282 was investigated. The corrosion products were characterized using X-ray diffraction, scanning electron microscope and focused-ion beam. The results show that the oxidation kinetics in flowing-air and steam follow the power law. External oxide scale was composed of TiO2 and Cr2O3, while the corrosion product for the internal oxide consisted of TiO2, Cr2O3 and Al2O3. Both temperature and water vapor can accelerate the oxidation rate. The coupling effect of the release and permeability of hydrogen and evaporation of chromium oxy-hydroxides are responsible for the severe oxidation of alloy 282 in steam.
17 citations