Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques.

The oxidative desulfurization of five (5) model sulfur compounds and eleven (11) surrogate blends was investigated using the hydrogen peroxide (HO)-acetic acid (CHCOOH) system. Consequently, extractive desulfurization was carried out using conventional solvents. The model sulfur compounds, as well as the solvent, are present in petroleum middle distillates.

Morphology, Activation, and Metal Substitution Effects of AlPO-5 for CO Pressure Swing Adsorption.

Aluminophosphate, AlPO-5, an AFI zeotype framework consisting of one-dimensional parallel micropores, and metal-substituted AlPO-5 were prepared and studied for CO adsorption. Preparation of AlPO-5 by using different activation methods (calcination and pyrolysis), incorporation of different metals/ions (Fe, Mg, Co, and Si) into the framework using various concentrations, and manipulation of the reaction mixture dilution rate and resulting crystal morphology were examined in relation to the CO adsorption performance. Among the various metal-substituted analogs, FeAPO-5 was found to exhibit the highest CO capacity at all pressures tested (up to 4 bar).