Browsing by Author "Álvarez Chacón, Jonathan André"

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    SÍNTESIS DE ÉSTERES USANDO COMO FUENTE ALTERNA DE ENERGÍA MICROONDAS PARA SU POSIBLE USO COMO LUBRICANTE
    (Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Maestría en Química, 2022) Álvarez Chacón, Jonathan André; Novillo Logroño, Fernando Augusto
    In this study, lubricant bases synthesized by the esterification reaction of castor oil with different alcohols and two different types of heating were obtained, since some principles of green chemistry were considered to obtain non-polluting products. The reaction was carried out with a time of 2 hours, a temperature of 90°C and a minimum amount of acid catalyst. An experimental design was established based on previous studies in triplicate, to determine important physicochemical properties such as relative density, boiling point, pour point, kinematic viscosity and viscosity index based on the Ecuadorian technical standard NTE INEN 2029:2013; in addition, the oxidation onset temperature was studied by differential scanning calorimetry and characterized by gas chromatography with mass spectrometry. It was determined that the lubricant bases from 1-octanol alcohol have a higher oxidation onset temperature than the others, and its value is like that of a commercial 5W40 oil, highlighting that the lubricant base is thermally stable at large temperature changes