Browsing by Author "Rojas Rivas, Sofia"
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Item Conversión catalítica de alcohol fusel y etanol utilizando perovskitas del tipo LaM2+O3 como catalizadores(Universidad Santiago de Cali, 2022) Rojas Rivas, Sofia; Orduña Ortega, Julieth (Directora); Mora Vargas, Jorge Andrés (Director)Currently, the development of more environmentally friendly methodologies to produce value-added compounds (PVA) from renewable raw materials has been increasing, mainly for the production of derivatives from fossil sources. Among these raw materials, the products obtained from the industrial processing of sugar cane become important substrates for obtaining these compounds. Fusel alcohol (mixture of different low molecular weight alcohols), obtained as a by-product in the process of obtaining bioethanol via fermentation routes has become a raw material little explored to produce PVA. In addition, its use as a substrate in the Guerbet reaction (RG) has not yet been investigated, therefore, in this work it was proposed catalytic conversion by RG to obtain PVA, added, experiments were performed with ethanol, since this has already been used in GR with heterogeneous catalysts. For this, the use of catalysts possessing acid/base and hydrogenation/dehydrogenation properties such as perovskite type materials are necessary. For this reason, the synthesis, characterization (DRX, Raman, TGA, FTIR and SEM) was performed and use as heterogeneous perovskite catalysts of type LaM2+O3 where M2+ = Cu2+ or Co2+ in the catalytic conversion of fusel alcohol and ethanol using a low pressure fixed bed reactor in order to determine its influence on the type of pervoskitas and how it varies depending on the reaction conditions, added, the products obtained in both reactions were identified by means of CG-EM. They were obtained as main products in the reaction with fusel alcohol alkenes, aldehydes, ketones, alcohols and esters, on the other hand, in the reactions with ethanol, acetaldehyde and 1-butanol was obtained, among other products due to secondary reactions. In the first case, it is necessary to continue the investigation in order to determine some possible routes of formation of the mostly obtained compounds; in the second instance, reactions tended to follow the Guerbet reaction path along with secondary reactions based on the hydrogenation and dehydrogenation of molecules.