Wet oxidation

About: Wet oxidation is a research topic. Over the lifetime, 3094 publications have been published within this topic receiving 61536 citations.

Wet air oxidation of refinery spent caustic

Abstract: Petroleum as processed in a typical refinery has acid components which must either be eliminated or substantially reduced in concentration prior to the final product stage. These acid components consist of both organic and inorganic fractions. The principal inorganic components include sulfur and hydrogen sulfide, with the organic components being cresylic and napthenic acids and mercaptides. These are either components of the crude oil or are created during the refining process. Removal of these components can be accomplished by caustic scrubbing or extraction which produces water soluble salts of the acid components and effectively separates them from the hydrocarbon stream.

Catalytic Wet Oxidation of Ferulic Acid (A Model Lignin Compound) Using Heterogeneous Copper Catalysts

Abstract: Catalytic wet oxidation (CWO) of ferulic acid (a model lignin compound) was investigated at low temperature and pressure (100 °C, 172 kPa P O2). Nine homogeneous catalysts were screened at three different catalyst loadings. Homogeneous copper ions were observed to be the most active catalysts; various copper based heterogeneous catalysts were also prepared and tested. The most active catalyst was Cu−Ni−Ce−Al2O3; however, this catalyst also exhibited the highest extent of copper leaching. Cu−Mn−Al2O3 was the most stable catalyst tested and was second only to Cu−Ni−Ce−Al2O3 in terms of activity among nine heterogeneous catalysts studied. Heterogeneous catalytic activity compared with the activity due to leached metal ions was observed to be dominant for both of the above-mentioned catalysts.