Revisiting the hydrogenation of sunflower oil over a Ni catalyst

Fernández, María Belén; Tonetto, Gabriela Marta; Crapiste, Guillermo Hector; Damiani, Daniel Eduardo

doi:10.1016/j.jfoodeng.2007.02.010

Cited by 61 publications

(43 citation statements)

References 18 publications

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“…It is shown that this plot is almost linear exhibiting a slope equal to −E/R. The apparent activation energy found equal to 46.8 kJ mol −1 , is within the expected range reported in the literature for vegetable oil hydrogenation (Cabrera and Grau, 2006;Fernandez et al, 2007).…”

Section: Temperature Effectsupporting

confidence: 84%

Conjugated linoleic acid formation by hydrogenation/isomerisation of safflower oil over bifunctional structured catalyst Rh/SBA‐15

et al. 2011

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Directed isomerisation of safflower oil under very low hydrogen partial pressure of 7 psi over a novel bifunctional highly structured rhodium-based catalyst (Rh/SBA-15), having narrow pore size distribution ranging from 4 to 8 nm, and BET-specific surface of ≈1,000 m 2 g −1 , was investigated as a new chemocatalytic approach for vegetable oil hardening and simultaneously producing health-beneficial conjugated linoleic acids (CLA). Time course profiles of (cis-9, trans-11)-; (cis-10, trans-12)-; (trans-10, cis-12)-; (cis,cis)-and (trans, trans)-octadecadienoic isomers (CLAs) as well as the other fatty acids traditionally encountered during the hydrogenation of vegetable oils are presented and discussed under selected process conditions. Preliminary results show that it is possible to tailor characteristics of the hydrogenation catalyst in such way to confer its bi-functional activity: hydrogenation and conjugation isomerisation.

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Section: Temperature Effectsupporting

confidence: 84%

Conjugated linoleic acid formation by hydrogenation/isomerisation of safflower oil over bifunctional structured catalyst Rh/SBA‐15

et al. 2011

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“…Studies of the kinetics of hydrogenation of these acids show that the rate of hydrogenation of linoleic acid is greater than oleic and stearic [11][12][13].…”

Section: Resultsmentioning

confidence: 99%

Hydrolysis - Hydrogenation of soybean oil and tallow

Díaz¹,

Perez²,

Tapanes³

et al. 2011

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Hydrolysis reactions are of major importance to the oleochemical industry in the production of fatty acid and their derivates. Hydrolysis of triglyceride from vegetable oil has been studied under various parameters such as: heterogeneous catalyst, temperature, reaction time and agitation speed. During the hydrolysis of soybean oil and tallow using nickel catalysts on alumina support was verified that the glycerol produced worked as hydrogen donor, allowing the hydrogenation of unsaturated fatty acids produced. Maximum conversion was achieved in 3 hours, catalysts 25% NiO/Al 2 O 3 , temperature of 250°C and 270°C and 250 rpm.

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“…Por otro lado, la Fig 2 presenta los resultados de hidrogenación a las condiciones de reacción típicas de la industria de alimentos, con el objetivo de compararlos con los del presente trabajo. En esta figura se puede observar una concentración máxima de sólo alrededor de 35% (p/p) de compuestos saturados, lo cual es típico en la industria de alimentos, tal y como está reportado en la literatura científica y técnica (Balakos & Hernandez, 1997) (Fernández, 2009;Balakos, 1997;Babaee, 2007;McArdle, 2011;Fernandez, 2007). Por tanto, esto sugiere la necesidad de desarrollar nuevos procesos para la obtención de productos con mayor contenido de compuestos saturados que pueden ser aplicados como intermedios en diferentes industrias, como las mencionadas anteriormente en la introducción.…”

Section: áCido Graso Contenido En El Aceite (% Peso)unclassified

Hidrogenación de Aceite Crudo de Jatropha para Aplicaciones Industriales

et al. 2015

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ResumenSe estudió la hidrogenación de aceite crudo de Jatropha usando dos catalizadores comerciales níquel/sílice y níquel/alúmina. Se realizó un diseño experimental 2 3 , comprendiendo las variables temperatura, presión y contenido de catalizador. El aceite y sus productos de reacción fueron caracterizados mediante la medición de composición y los índices de acidez, saponificación y yodo. Los catalizadores se caracterizaron por área BET, FT-IR, TPR y TGA. Dentro de los resultados más relevantes del presente trabajo están: a) el catalizador níquel/sílice mostró mayor actividad, debido posiblemente a su mayor área superficial, lo cual pudo favorecer la dispersión del níquel; b) se encontró una alta estabilidad a la oxidación del catalizador níquel/sílice, lo que le confiere un alto grado de reutilización; c) se obtuvo un producto con una hidrogenación mayor al 98% con potenciales aplicaciones en lubricantes textiles, aditivos suavizantes, entre otros. Palabras clave: hidrogenación; catalizador de níquel; aceite crudo de Jatropha; temperatura de reducción, diseño de experimentos Hydrogenation of Crude Jatropha Oil for Industrial Applications AbstractHydrogenation of crude Jatropha oil using two commercial catalysts nickel/silica and nickel/alumina was studied. An experimental design 2 3 was carried out, including the variables temperature, pressure and content of catalyst. Oil and their reaction products were characterized by measuring composition and acid value, saponification and iodine. The catalysts were characterized by BET area, FT-IR, TPR and TGA. Among the most relevant results are: a) The catalyst nickel/silica showed higher activity, possibly due to its larger surface area, which could favor the dispersion of nickel; b) high stability to oxidation by catalyst nickel/silica was found, which gives a high degree of reuse; c) a product with hydrogenation greater than 98% with the potential to apply in textile lubricants, softening additives, among others.

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Revisiting the hydrogenation of sunflower oil over a Ni catalyst

Cited by 61 publications

References 18 publications

Conjugated linoleic acid formation by hydrogenation/isomerisation of safflower oil over bifunctional structured catalyst Rh/SBA‐15

Conjugated linoleic acid formation by hydrogenation/isomerisation of safflower oil over bifunctional structured catalyst Rh/SBA‐15

Hydrolysis - Hydrogenation of soybean oil and tallow

Hidrogenación de Aceite Crudo de Jatropha para Aplicaciones Industriales

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