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An ultrasound-assisted heterogeneous catalytic oxidation process was applied to eliminate sulfur from commercial diesel fuel oil. The studied variables were catalyst concentration, type of catalyst (homogeneous or heterogeneous), oxidizing agent concentration, and the application of ultrasound energy. Supported catalysts were prepared by impregnation of coal fly ash with an iron(II) sulfate aqueous...
Cellulose was purified from rice husk with several steps to remove impurities. The purified cellulose was used for the synthesis of cellulose nanocrystals. Apart of the impurities commonly found on cellulosic plant sources, the sample contained silica too, which was removed using a NaOH treatment. Fourier Transform Infrared Spectroscopy was done on cellulose before and after treatment and on the resulting...
Mexican thermal power plants typically use heavy fuel oil with high sulfur content as feedstock, so flue gases with high amounts of sulfur oxides (SO x ) are continuously emitted to the environment. On the other hand, stringent environmental restriction will be worldwide implemented in the near future; therefore, modifications or installation of new technologies in the thermal power plants...
The preparation and characterization of a CuO–CeO 2 sorbent-catalyst was performed by an inorganic/organic synthesis route and the materials were tested in de-SO x type reactions. The preparation of mesostructured CeO 2 was made using hexadecylamine surfactant and cerium acetate as the inorganic precursor. This procedure was modified by inclusion of the CuO precursor during...
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