Preparation of hydrogenated soybean oil of high oleic oil with supported catalysts

Zhao, Yue; Ren, Yue; Zhang, Ruchun; Zhang, Lu; Yu, Dianyu; Jiang, Lianzhou; Elfalleh, Walid

doi:10.1016/j.fbio.2018.01.010

Cited by 17 publications

(10 citation statements)

References 27 publications

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“…In addition, the rate constant k 3 for the hydrogenation of trienoic acid was 0.0373, the rate constant k 2 for the hydrogenation of dienoic acid was 0.0079, and the rate constant k 1 for the hydrogenation of monoenoic acid was 0.0039. This indicates that the hydrogenation of dienoic acid was slower than that of trienoic acid but was faster than the hydrogenation of monoenoic acid 27 , so that the reaction rate first increased and then decreased, and the H 2 consumption first increased and then tended to be stable.…”

Section: Solubility and Consumption Of H 2 In The Electrolytementioning

confidence: 98%

Study on the Electrochemical Hydrogenation of Soybean Oil under H<sub>2</sub> Conditions

et al. 2019

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The solubility of H 2 in electrolytes, H 2 reaction consumption and the conductivity of electrolytes under different pressures in an electrochemical hydrogenation reactor were studied. It was found that with an increase in H 2 pressure, H 2 was electrolyzed at the anode, accompanied by the generation of H +. The solubility of H 2 in the electrolytes and the conductivity of the electrolytes also increased. At first, the reaction consumption increased, followed by a tendency to be stable at 3 MPa. Therefore, the electrochemical hydrogenation of soybean oil was carried out at a H 2 pressure of 3 MPa. When the current was 120 mA, the temperature was 50℃, the agitation speed was 300 rpm, and the time was 7.5 h, the IV of hydrogenated soybean oil was 99.6 g I 2 /100 g oil, and the TFA content of the oil was 4.3%.

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Section: Solubility and Consumption Of H 2 In The Electrolytementioning

confidence: 98%

Study on the Electrochemical Hydrogenation of Soybean Oil under H<sub>2</sub> Conditions

et al. 2019

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“…In addition, the rate constant k 3 for the hydrogenation of trienoic acid was 0.0373, the rate constant k 2 for the hydrogenation of dienoic acid was 0.0079, and the rate constant k 1 for the hydrogenation of monoenoic acid was 0.0039. These findings indicated that the hydrogenation of dienoic acid was slower than that of trienoic acid but was faster than the hydrogenation of monoenoic acid (Zhao et al, ), so the reaction rate first increased and then decreased, and the hydrogen consumption first increased and then tended to be stable.…”

Section: Resultsmentioning

confidence: 96%

Electrochemical hydrogenation of soybean oil by filling H ₂ in supercritical CO ₂

Wang

Geng

et al. 2019

J Food Process Preserv

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Electrochemical hydrogenation under a mixed gas environment of CO2 and H2 was studied. It was found that in supercritical CO2 (SC‐CO2), the mole fraction of H2 in both the CO2 and electrolytes increased as H2 pressure increased. CO2 was dissolved in the electrolyte to form unstable carbonic acid, which was easily decomposed into HCO3- and H+. Meanwhile, H2 was electrolyzed to form H+ at the anode, so that the conductivity increased, the hydrogen consumption of the reaction increased, and then tended to be stable at a total pressure of 9.0 MPa. Herein, the electrochemical hydrogenation of soybean oil was accomplished at a current of 120 mA, a temperature of 50°C, and an agitation speed of 300 rpm. The iodine value (IV) of the hydrogenated soybean oil was 90.6 g I2/100 g oil at 7 hr and the trans fatty acid (TFA) content in the oil was 3.32%. Practical applications In the present study, H2 was added to the electrochemical hydrogenation reactor and soybean oil was electrochemically hydrogenated by filling H2 in supercritical CO2. By filling H2, the TFAs of the hydrogenated soybean oil were reduced, and the TFA content was only 3.32%. The reaction rate of the hydrogenation was faster and the hydrogenation time decreased by 5 hr compared with the hydrogenation of soybean oil at a normal pressure. Moreover, the electrochemical hydrogenation reactor used a moderate pressure and a large reaction volume, which is beneficial to industrialization. The electrochemical hydrogenation by filling H2 in SC‐CO2 decreased the hydrogenation time and reduced the industrial production costs. This method can be further applied for industrial purposes.

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“…Then H 2 were introduced to the reactor at 8 MPa CO 2 and the experiment was carried out at 100 °C, stirring speed of 300 rpm/min and total pressure of 12 MPa. After the reaction, the obtained products were separated and samples were collected and analyzed (Zhao et al, ).…”

Section: Methodsmentioning

confidence: 99%

Preparation and characterization of Ni‐Agx/SBA‐15 and its catalytic properties on the hydrogenation of soybean oil

Zou

Zhao

et al. 2018

J Food Process Engineering

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Ni‐Agx/SBA‐15 catalysts with different contents of the silver (Ag) promoter were prepared by the co‐impregnation method using the support of the mesoporous material SBA‐15. The Ni‐Agx/SBA‐15 catalysts were characterized by ICP‐OES, X‐ray diffraction (XRD), transmission electron microscope (TEM), and N2 adsorption–desorption isotherms. The activity of the catalysts on hydrogenation of soybean oil was evaluated. The results indicated that all the catalysts retained the hexagonally ordered structure of SBA‐15, the binding force between SBA‐15 and Ni was enhanced by the addition of the Ag promoter, and Ni was well loaded on the surface and the interior of the support that was beneficial to the improvement of catalyst activity. TEM images of the catalysts show that the addition of the silver can promote the dispersion of nickel particles over and inside the mesoporous channels of the SBA‐15 support, and the aggregation of metal nickel particles was decreased. The catalysts of Ra‐Ni (Raney Nickel), Ni/SBA‐15 and Ni‐Agx/SBA‐15 were used in the hydrogenation of soybean oil. The results show that Ni‐Ag0.15/SBA‐15 in hydrogenation processing has higher catalytic activity, and the obtained hydrogenated soybean oil has low trans fatty acids (TFAs) content. The use efficiency of the catalyst decreased to 60% after 8 cycles. Practical applications The main objective of this work was to hydrogenate soybean oil. Very encouraging results were obtained with Ni‐Ag0.15/SBA15. This preparation had a higher catalyst activity to obtain low trans fatty acid content. This finding is very valuable for fat and oil processing at the industry level.

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Preparation of hydrogenated soybean oil of high oleic oil with supported catalysts

Cited by 17 publications

References 27 publications

Study on the Electrochemical Hydrogenation of Soybean Oil under H<sub>2</sub> Conditions

Study on the Electrochemical Hydrogenation of Soybean Oil under H<sub>2</sub> Conditions

Electrochemical hydrogenation of soybean oil by filling H ₂ in supercritical CO ₂

Preparation and characterization of Ni‐Agx/SBA‐15 and its catalytic properties on the hydrogenation of soybean oil

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Preparation of hydrogenated soybean oil of high oleic oil with supported catalysts

Cited by 17 publications

References 27 publications

Study on the Electrochemical Hydrogenation of Soybean Oil under H<sub>2</sub> Conditions

Study on the Electrochemical Hydrogenation of Soybean Oil under H<sub>2</sub> Conditions

Electrochemical hydrogenation of soybean oil by filling H 2 in supercritical CO 2

Preparation and characterization of Ni‐Agx/SBA‐15 and its catalytic properties on the hydrogenation of soybean oil

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Electrochemical hydrogenation of soybean oil by filling H ₂ in supercritical CO ₂