Hydrogenation of soybean oil over various platinum catalysts: Effects of support materials on trans fatty acid levels

Iida, Hiroki; Itoh, Daigo; Minowa, Satoshi; Yanagisawa, Akira; Igarashi, Akira

doi:10.1016/j.catcom.2014.12.025

Cited by 31 publications

(23 citation statements)

References 27 publications

(31 reference statements)

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“…The changes in the electronic properties and electron densities of catalysts as observed by the shift in binding energies is known to alter the adsorption of reacting species and hence the selectivity towards the final products [95] , [96] , [97] . In this case, the decrease in binding energy denotes the increase in electron density of Ni species on the catalyst surface, thus leading to weaker interactions between the adsorbed or hydrogenated intermediates and the active sites, allowing easier desorption thus diminishing the transformation of unsaturated fat molecules or cis isomers to trans isomers [98] , which was also a phenomenon reported by other researchers such as Iida et al [99] . Similarly, Li et al [75] has noticed a negative shift in binding energy for Ru species in Ru-B catalysts after sonication, which facilitated the adsorption of the oxygen atom of carbonyl groups in the cinnamaldehyde molecule, ultimately enhancing the hydrogenation of the molecule.…”

Section: Resultsmentioning

confidence: 59%

Ultrasound-assisted sequentially precipitated nickel-silica catalysts and its application in the partial hydrogenation of edible oil

Lim

Yang

Tiong

et al. 2021

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 59%

Ultrasound-assisted sequentially precipitated nickel-silica catalysts and its application in the partial hydrogenation of edible oil

Lim

Yang

Tiong

et al. 2021

Ultrasonics Sonochemistry

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“…Calibration gases (N4, N21, Crystal-mixtures) and H 2 (purity [ 99.999 mol %) were purchased from Air Liquide (Hamburg, Germany). Pt and CoMo catalysts for HDO purposes were applied and have already been widely studied [5,[24][25][26][27][28]. The CoMo catalyst was provided stringshaped in a basket, and the Pt catalyst as a fine powder.…”

Section: Experimental Section Materialsmentioning

confidence: 99%

Hydrodeoxygenation of cracked vegetable oil using CoMo/Al2O3 and Pt/C catalysts

Baldauf

Sievers

Willner

2016

Int J Energy Environ Eng

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During the continuous catalytic hydrodeoxygenation (HDO) of cracked vegetable oil (CVO), CO 2 and CO occur as the main reaction gases, in addition to hydrocarbon gases such as CH 4 and C 2 H 6. The catalysts used were cobalt-molybdenum (CoMo) on an Al 2 O 3 support and platinum (Pt) on an active carbon. All named gas components can result directly from the decomposition of CVO. The results of batch experiments for gas phase reactions (GPRs) under the same 50 bar H 2 atmosphere using the same catalysts (CoMo, Pt) indicate that CO and CH 4 can also be formed by GPRs. CO can result from the reverse water-gas shift reaction (RWGS), and CH 4 from CO-or CO 2-methanation. The found CO-yields from GPRs are within the theoretical thermodynamic limits based on equilibrium. An unexpected inhomogeneity of the gas component concentrations in the reactor during batch investigations was observed despite the elevated temperature (380°C) and high RPM (1100) due to the high density difference compared to H 2, especially in the case of CO 2. Keywords Catalytic hydrodeoxygenation Á Cracked vegetable oil Á Biofuel Á Gas residence time Á Gas phase reactions Á Gas phase inhomogeneity

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“…The structure of many fat‐based products is based on networks of crystalline triacylglycerol (TAG) hard stock. These networks contain high levels of saturated fatty acids (SFAs), which are among the factors contributing to cardiovascular diseases . Therefore, it would be desirable to have alternative methods for structuring oil.…”

Section: Introductionmentioning

confidence: 99%

A Novel Cinnamic Acid‐Based Organogel: Effect of Oil Type on Physical Characteristics and Crystallization Kinetics

Wang

et al. 2020

Euro J Lipid Sci & Tech

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Oil sources (canola, sunflower, and flax‐seed oil) characterized by unsaturated fatty acids are gelled by using cinnamic acid. The physical characteristics and crystallization kinetics of cinnamic acid‐based organogels are investigated. A phase diagram with cinnamic acid concentrations ranging from 1% to 7% (w/w) shows that both canola and sunflower oil organogels are formed at 3.0% (w/w) cinnamic acid at 5 °C. The flax‐seed oil organogels are formed at 4.0% (w/w) at 5 °C. Firmness is shown to be dependent on the fatty acid composition and viscosity of the oil. Flax‐seed oil with a higher degree of unsaturation and lower viscosity tends to produce harder organogels. This result is consistent with the observations of polarized light microscopy. The organogels have low solid fat content at 35 °C which is close to the human body temperature, and no effect of oil type is found. The X‐ray diffraction measurements show β'‐form crystal exists in three types of organogels. The thermal properties vary in different types of organogels. The crystallization kinetics results suggest that three types of organogels crystallize by 1D and 2D mixed growth and instantaneous nucleation. Practical Applications: These findings provide in‐depth characteristics of cinnamic acid‐based organogels, which are a substitute for solid fats.

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Hydrogenation of soybean oil over various platinum catalysts: Effects of support materials on trans fatty acid levels

Cited by 31 publications

References 27 publications

Ultrasound-assisted sequentially precipitated nickel-silica catalysts and its application in the partial hydrogenation of edible oil

Ultrasound-assisted sequentially precipitated nickel-silica catalysts and its application in the partial hydrogenation of edible oil

Hydrodeoxygenation of cracked vegetable oil using CoMo/Al2O3 and Pt/C catalysts

A Novel Cinnamic Acid‐Based Organogel: Effect of Oil Type on Physical Characteristics and Crystallization Kinetics

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