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In this study, different crystalline forms of nano-TiO2 were prepared using the sol–gel method. The TiO2 particles were characterized by X-ray diffraction, transmission electron microscopy, and nitrogen adsorption/desorption measurements. The prepared nano-TiO2 was directly used as a catalyst to remove dibenzothiophene (DBT) from an octane solution without UV irradiation and with H2O2 aqueous solution...
In this study, physical and chemical characterizations of calcium methoxide were investigated to assess its performance as an excellent solid base catalyst using some instrumental methods, such as BET surface area measurement, scanning electron micrographs and particle size distribution. Then, it was used to catalyze transesterification of soybean oil to biodiesel with methanol. The effects of various...
In this study, transesterification of soybean oil to biodiesel using CaO as a solid base catalyst was studied. The reaction mechanism was proposed and the separate effects of the molar ratio of methanol to oil, reaction temperature, mass ratio of catalyst to oil and water content were investigated. The experimental results showed that a 12:1 molar ratio of methanol to oil, addition of 8% CaO catalyst,...
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