Effect of chemically reduced palladium supported catalyst on sunflower oil hydrogenation conversion and selectivity

Alshaibani, Abdulmajid; Yaakob, Zahira; Alsobaai, Ahmed Mubarak; Sahri, Miskandar Mat

doi:10.1016/j.arabjc.2013.02.014

Cited by 10 publications

(5 citation statements)

References 19 publications

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“…The hydrogenation process is an addition reaction between hydrogen and C=C double bonds in oil under the action of catalysts, which can improve the oxidation stability of oils, imparting unique aromas, good emulsification, and plasticity (Alshaibani et al, 2017; Shin et al, 2018), and is one of the important technologies in modern fat and oil processing. The conventional hydrogenation process uses nickel as a catalyst and performs the hydrogenation reaction in a high‐pressure reactor (110–190°C, 0.21–0.48 MPa), which requires high pressure and temperature during the hydrogenation process and cannot be produced continuously, and the prepared hydrogenated oil contains a large amount of trans fatty acids (TFAs, 25%–60%) (Singh et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Onion‐like fullerene as a carrier for the synthesis of platinum catalysts and its application to the electrochemical hydrogenation of soybean oil

Yan

Li²,

Han

et al. 2022

Food Processing Preservation

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In this study, Pt/OLF catalysts were synthesized using onion‐like fullerenes (OLF) as carriers and applied as cathode catalysts in solid polymer electrolyte (SPE) electrochemical reactors for the preparation of hydrogenated oils. The results show that OLF is a good carrier, and the specific surface area and accumulated pore area of OLF are increased after oxidation by 264.50% and 256.83%, respectively. The loaded Pt forms uniformly dispersed crystalline particles (14.59 nm) on the OLF, and the crystallization is dominated by 111 crystalline planes. In the hydrogenation process, the Pt/OLF catalyst shows lower trienoate selectivity, lower activation energy (21.36 kJ/mol), and higher catalytic activity than the Pt/C catalyst. In addition, the hydrogenated product prepared with the Pt/OLF catalyst has a lower trans fatty acids (TFA) content than that of Pt/C, and the oil crystallization in the product is more uniform, but no difference in flavor is found for the Pt/C‐hydrogenated oil, which is an excellent quality hydrogenated product. Novelty impact statement Preparation of Pt‐based catalyst with good catalytic activity using onion‐like fullerenes (OLF) as carrier. Application of Pt/OLF catalyst to SPE electrochemical hydrogenation reactor to hydrogenated soybean oil. Prepared a hydrogenated product with low trans fatty acids, uniform crystallinity, and good quality.

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Section: Introductionmentioning

confidence: 99%

Onion‐like fullerene as a carrier for the synthesis of platinum catalysts and its application to the electrochemical hydrogenation of soybean oil

Yan

Li²,

Han

et al. 2022

Food Processing Preservation

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“…It was also reported that CTH using sodium formate seems to be a simple and useful alternative method of hydrogenation. The study of hydrogenation of sunflower oil was reported by Mcardle et al 8 and Alshaibani et al 9 Mcardle et al 8 tested the efficacy of different catalysts based on a combination of palladium, platinum, or nickel as active metal and aluminum oxide, zirconium dioxide, or titanium dioxide as supports. It was reported that palladium was the catalyst giving the best enhanced selectivity as compared to platinum and nickel.…”

Section: Introductionmentioning

confidence: 99%

“…The metal content in the supported catalyst was also reported to affect the rate of CTH considerably. Alshaibani et al 9 synthesized a specific catalyst as Pd−B/γ-Al 2 O 3 and compared the efficacy with the commercially available form as Pd/Al 2 O 3 . It was reported that the specially synthesized form of catalyst resulted in a higher conversion of about 17% and lower transisomer selectivity to the tune of 23%.…”

Section: Introductionmentioning

confidence: 99%

Intensified Catalytic Transfer Hydrogenation of Sunflower Oil Using Ultrasound

Sarnaik

Gogate

2019

Ind. Eng. Chem. Res.

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The present work deals with the catalytic transfer hydrogenation (CTH) of sunflower oil focusing on establishing the best conditions of ultrasonic operating and reaction parameters to maximize the extent of hydrogenation of sunflower oil. The processing is based on the use of 5% Pd/C as the catalyst, ammonium formate as the hydrogen donor, and water as solvent. The effect of ultrasonic power, ultrasonic frequency, temperature, speed of agitation, catalyst loading, and water quantity on the extent of CTH has been investigated. Under the best operating conditions of ultrasonic power as 150 W, 22 kHz as frequency, 30 °C as the reaction temperature, 800 rpm as the agitation speed, 2% w/ w as the catalyst loading, and 50 mL of water, a maximum reduction in iodine value was obtained from 141.65 to 87.24 g/100 g of oil. It was also demonstrated that use of ultrasound resulted in significant intensification (final acid value of 87.24 g/100 g of oil) as compared to the conventional approach based on only stirring (final acid value of 105.85 g/ 100g of oil). Overall the work has clearly demonstrated that ultrasound-assisted CTH is a useful approach for the conversion of sunflower oil into value added products with demonstrated intensification benefits.

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“…Therefore, hydrogenated oils and fats with low or no TFAs need to be developed in the food industry. The research for development of new catalyst is one of several methods applied for the production of hydrogenated oils and fats with a low TFAs levels (Alshaibani, Yaakob, Alsobaai, & Sahri, 2017;Fernández, Sanchez, Tonetto, & Damiani, 2009).…”

Section: Introductionmentioning

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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Effect of chemically reduced palladium supported catalyst on sunflower oil hydrogenation conversion and selectivity

Cited by 10 publications

References 19 publications

Onion‐like fullerene as a carrier for the synthesis of platinum catalysts and its application to the electrochemical hydrogenation of soybean oil

Onion‐like fullerene as a carrier for the synthesis of platinum catalysts and its application to the electrochemical hydrogenation of soybean oil

Intensified Catalytic Transfer Hydrogenation of Sunflower Oil Using Ultrasound

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

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