Producción de Diésel Renovable a partir de Aceite de Higuerilla mediante Catalizadores de Níquel-Molibdeno Soportados sobre Alúmina

Sánchez, Lorena; Llano, Biviana; Ríos, Luis Alberto

doi:10.4067/s0718-07642017000100003

Cited by 10 publications

(3 citation statements)

References 19 publications

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“…Although in recent years many studies have been published about HDT of vegetable oils, a limited number of them have reported the HDT of castor oil or its fatty acid methyl esters (FAMEs) for renewable diesel production . Only recently, Orozco et al described the selective production of green diesel from castor oil in a continuous‐flow fixed‐bed microreactor using a commercial sulfided NiMo/Al 2 O 3 without promoting hydrocracking (HDC) reactions.…”

Section: Introductionmentioning

confidence: 99%

Hydrotreating Model Comparison of Raw Castor Oil and its Methyl Esters for Biofuel Production

et al. 2018

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Some of the main problems during vegetable oil hydrotreating are the high heat of reaction released, the huge quantity of expensive hydrogen required, and the high corrosion rates in the equipment. Some insights into the advantages and disadvantages of processing raw vegetable oils or their respective fatty acid methyl esters are given. The ASPEN Plus process simulator was used for the simulation of a hydrotreating process, with two different feedstocks coming from the same plant: raw castor oil and castor oil methyl esters. That process was modeled with two stoichiometric reactors in series. The technical viability of using methyl esters as hydrotreating feedstock for the production of biofuels such as green gasoline and diesel is demonstrated.

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Section: Introductionmentioning

confidence: 99%

Hydrotreating Model Comparison of Raw Castor Oil and its Methyl Esters for Biofuel Production

et al. 2018

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“…Meller et al 13 reported the deoxygenation of castor oil-derived fatty acid methyl esters in a batch process at 340 °C, 25 bars H 2 pressure for 6 h of reaction and reported a C 17 yield of 87.0 wt % and a C 18 yield of 9.0 wt % using a Pd/C catalyst. Finally, Sańchez et al 14 reported the hydrotreatment of castor oil with a complete conversion and C 17 and C 18 yields of 54.4 and 20.9 wt %, respectively, using NiMo/Al 2 O 3 in a batch process at 350 °C and 90 bars of H 2 pressure for 4 h of reaction. As can be understood, none of the studies developed a catalyst or established a set of reaction conditions specifically tailored to enhance selectivity toward the HDO pathway over the decarboxylation/decarbonylation pathway, which is a key gap that this study aims to bridge.…”

Section: ■ Introductionmentioning

confidence: 99%

Development and Characterization of a One-Pot Synthesized Fe–Au–Pd Surface Alloy Catalyst for Highly Selective Conversion of Castor Oil to Octadecane via Hydrodeoxygenation

et al. 2021

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The complete conversion of castor oil with 96.0% selectivity toward the hydrodeoxygenation (HDO) product octadecane in 3 h at 250 °C, 40 bars H 2 and 20 bars CO 2 pressure with a high castor oil to catalyst ratio (w/w) of 18.4 was demonstrated using a SiO 2 −TiO 2 -encapsulated one-pot Fe−Au− Pd@SiO 2 −TiO 2 catalyst. This octadecane selectivity was 72.6% higher than what was obtained using a Fe−Ni−Pd@SiO 2 −TiO 2 catalyst under the same reaction conditions, but with only half the castor oil/catalyst ratio as 9.2. At three times the castor oil/catalyst ratio of 27.6, the selectivity toward C 18 using Fe−Au−Pd@SiO 2 − TiO 2 was still 66.8% higher. The one-pot catalysts were also superior to a mesocellular foam-supported Fe−Pd−Ni catalyst synthesized using the conventional two-step wet impregnation method. Pressurized CO 2 in hexane facilitated the HDO pathway obeying Le Chatelier's principle and by lowering the viscosity of the reactant solution. Based on the observed product spectrum, a reaction pathway for the HDO of castor oil over Fe−Au−Pd@ SiO 2 −TiO 2 was proposed. Catalyst characterization revealed different types of active sites in Fe−Au−Pd@SiO 2 −TiO 2 , acting synergistically to catalyze the HDO of castor oil. Single-crystal X-ray diffraction showed that the Fe−Au−Pd ensemble had a tetragonal dipyramidal crystal system with an Au centric nanostructure. Fe−Au−Pd@SiO 2 −TiO 2 possessed impressive H 2 spillover capability driven by the Fe−Au−Pd nanoparticles and a large number of isolated electron-deficient Pd δ+ surface species arising out of Pd−Au interaction via charge transfer. The Fe component of Fe−Au−Pd@SiO 2 −TiO 2 existed as individual Fe, bimetallic Fe−Au/ Fe−Pd, or trimetallic Fe−Au−Pd nanoparticles. The Fe surface of these nanoparticles in its Fe 0 state was the primary HDO site. Due to one-pot synthesis, the catalyst could contain high practical metal loading (96.7% for Fe), resulting in abundant active sites for HDO. Fe−Au−Pd@SiO 2 −TiO 2 was also tested to be stable over at least five cycles.

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“…Según la directiva 2003/30/CE de la Comisión de la Unión Europea, se sugiere el uso de biocombustibles para asegurar y diversificar la oferta de energía, y a su vez, disminuir las emisiones netas de CO2 para el transporte terrestre en Europa. El biodiésel se define como los mono ésteres de alquilo de ácidos grasos obtenidos a partir de recursos renovables tales como aceites vegetales, grasas animales, aceites residuales y aceite de algas (Malhotra y Sarin, 2004;Sánchez et al, 2017). Se estima que la producción de biodiésel a nivel mundial pasará de casi 28 mil millones de litros que se producen en la actualidad, a 38,6 mil millones de litros que se tiene previsto producir en 2014 (García-Camús y García-Laborda, 2006).…”

Section: Introductionunclassified

Separación Electrostática de una Emulsión de Glicerina en Biodiésel con Aplicación de Varios Voltajes y Distancias entre Electrodos

2019

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Con el propósito de aplicar una tecnología limpia y de bajo consumo energético en la separación de emulsiones, se construyó un separador electrostático de 1,0 dm 3. Se utilizaron electrodos de cobre rectangulares. Para los ensayos se prepararon emulsiones de glicerina (10% v/v) en biodiésel. Como agente emulsificante se utilizó licitina. Los voltajes empleados fueron 3000, 6000 y 9000 voltios; y las distancias entre electrodos fueron 2, 4 y 6 cm. Para cada ensayo se alcanzó la separación completa de la emulsión y se registraron los tiempos necesarios. Se determinó que existe un efecto tanto individual como combinado de los factores ensayados en la separación de la glicerina del biodiésel. La distancia entre electrodos fue la variable que mayor efecto produjo en la separación, seguidos del voltaje y la combinación de voltaje/distancia. Los tiempos de separación observados varían entre 8,3 y 45,3 segundos.

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Producción de Diésel Renovable a partir de Aceite de Higuerilla mediante Catalizadores de Níquel-Molibdeno Soportados sobre Alúmina

Cited by 10 publications

References 19 publications

Hydrotreating Model Comparison of Raw Castor Oil and its Methyl Esters for Biofuel Production

Hydrotreating Model Comparison of Raw Castor Oil and its Methyl Esters for Biofuel Production

Development and Characterization of a One-Pot Synthesized Fe–Au–Pd Surface Alloy Catalyst for Highly Selective Conversion of Castor Oil to Octadecane via Hydrodeoxygenation

Separación Electrostática de una Emulsión de Glicerina en Biodiésel con Aplicación de Varios Voltajes y Distancias entre Electrodos

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