The effect of rosin acid on hydrodeoxygenation of fatty acid

Ojagh, Houman; Creaser, Derek; Salam, Muhammad Abdus; Grennfelt, Eva Lind; Olsson, Louise

doi:10.1016/j.jechem.2018.01.023

Cited by 16 publications

(7 citation statements)

References 49 publications

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“…%, this will allow for increase in the number of active sites and hence increase in oleic acid conversion. Increase in catalyst concentration causes increase in triglyceride/fatty acid conversion as explained by numerous researchers that worked on hydroprocessing reactions 59–61 . Increase in reaction time leads to increase in oleic acid conversion since the forward reaction is the most favored path.…”

Section: Resultsmentioning

confidence: 99%

“…Increase in catalyst concentration causes increase in triglyceride/fatty acid conversion as explained by numerous researchers that worked on hydroprocessing reactions. [59][60][61] Increase in reaction time leads to increase in oleic acid conversion since the forward reaction is the most favored path. The rate of increment of oleic acid due to increase in reaction time from 6-8 h dwindled gradually as catalyst concentration was raised from 2 to 8 wt.% indicating strong interaction effect of these two factors on oleic acid conversion.…”

Section: Effects Of the Controlled Variables And Their Interactions On The Responsesmentioning

confidence: 99%

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Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO₂‐Al₂O₃ catalyst: Process parameters optimization, kinetics, and thermodynamic study

Ayandiran

Boahene

Dalai

et al. 2021

Asia-Pacific J Chem Eng

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Hydroprocessing of vegetable oil to high‐quality jet fuel range hydrocarbons (HRJ) plays a significant role in the development of completely interchangeable substitute for conventional petroleum‐derived jet fuel and has drawn the attention of aviation experts due to its capacity to mitigate greenhouse gas emissions associated with the aviation industry. The limited performance of 1 wt. % Sn promoted Fe(3)‐Cu(13)/SiO2‐Al2O3 catalyst in our previous study has been attributed to the successive consideration of one variable at a time in its evaluation. Maximization of oleic acid conversion and selectivity of jet fuel range hydrocarbons from hydroprocessing of oleic acid over 1 wt. % Sn promoted Fe(3)‐Cu(13)/SiO2‐Al2O3 catalyst with the best combination of the process parameter involved via multivariate approach, and evaluation of kinetic and thermodynamic activation parameters is the focus of this study. Reduced cubic oleic acid conversion model and reduced quadratic jet fuel range hydrocarbons selectivity model of high significance levels, adequate precision, and high correlation coefficient were developed. Reaction temperature of 339.5°C, 1.6 MPa H2 pressure, 6.2 wt.% catalyst concentration, and 8.0 h reaction time were optimum process parameters that can maximize oleic acid conversion and selectivity of jet fuel range hydrocarbons at 98.2% and 82.2%, respectively. This process was found to be endothermic, irreversible, and nonspontaneous with 45.8 KJ/mol activation enthalpy of reaction, 0.25 KJ/mol entropy of reaction, and the reaction's Gibb's free energy of 198.8 KJ/mol at 340°C. The minimum energy required for the reaction to take place was evaluated as 50.7 KJ/mol.

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Section: Resultsmentioning

confidence: 99%

Section: Effects Of the Controlled Variables And Their Interactions On The Responsesmentioning

confidence: 99%

Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO₂‐Al₂O₃ catalyst: Process parameters optimization, kinetics, and thermodynamic study

Ayandiran

Boahene

Dalai

et al. 2021

Asia-Pacific J Chem Eng

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“…It is characterized by being a volatile fraction constituted mainly by monoterpenes and sesquiterpenes. The terpenes, which constitute the non-volatile fraction of these resins, are mainly diterpenic acids with three molecular skeletons of the abietane, pimaran and labdan type, varying quantitatively among the different families of conifers [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Obtaining salts of resin acids from Cuban pine by metathesis reactions

2020

Biointerface Res Appl Chem

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The resin acids obtained from the Cuban pine rosin are the starting material for the development and application of metathesis reactions. These reactions allow the obtaining of salts with high added value which could be used in the development of biomaterials for dental use. The objective of this work was to obtain calcium, magnesium and zinc resinates from the resin acid obtained from the Cuban pine resin by metathesis reaction for possible use in the development of biomaterials. The products obtained were evaluated by elemental analysis, X-ray powder diffraction, infrared spectroscopy, scanning electron microscopy associated with electron dispersion spectroscopy, nuclear magnetic resonance and biological tests (antibacterial activity). The results showed the formation of the different resinates, observing the presence of cations in the salts obtained. The disappearance of the signal corresponding to the hydrogen of the carboxyl group was verified by nuclear magnetic resonance analysis due to the reaction between the resinic acid and the different metals studied. The biological analyzes showed that the best results are achieved with zinc resinate.

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“…Wang et al reported a new biodiesel producing process: esterification of rosin with supercritical methanol, and the obtained rosin-based biodiesel could effectively improve the performance of petro-based fuel . The hydrodeoxygenation of abietic acid over sulfided NiMo/Al 2 O 3 and Pd/C was also developed as an alternative renewable fuel resource . Ojagh et al successfully converted rosin acids to value-added fuel components without a concomitant excessive coke problem .…”

Section: Introductionmentioning

confidence: 99%

“…11 The hydrodeoxygenation of abietic acid over sulfided NiMo/Al 2 O 3 and Pd/C was also developed as an alternative renewable fuel resource. 12 Ojagh et al successfully converted rosin acids to value-added fuel components without a concomitant excessive coke problem. 13 The annual production of the world's gum rosin is about 1 200 000 tons, and it has been applied as an essential industrial raw material in many areas.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability of Abietic Acid and Its Oxidation Products

Niu

et al. 2019

Energy Fuels

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The thermal oxidation characteristics of abietic acid were investigated through tracing the oxidation process in custom-designed mini closed pressure vessel test under isothermal and step temperature conditions. Peroxide generation and the peroxide value of abietic acid oxidation process were measured using thin-layer chromatographic analysis and iodimetry. The primary oxidation productperoxidewas separated by column chromatography with further structure characterization, and its thermal decomposition characteristics were assessed via a differential scanning calorimeter (DSC). The oxidation was mainly initiated through the radical generation from hydrogen abstraction on the unsaturated conjugated double bonds of abietic acid above 343 K. The main hydroperoxide, 7-hydroperoxy-13-abiet-8(14)-enoic acid, was found in abietic acid with a high peroxide value. The exothermic onset temperature (T 0) and decomposition heat (Q DSC) of this peroxide were 353.94 K and 545.37 J·g–1, respectively. Finally, a second-stage oxidation process of abietic acid was first investigated when the temperature reached the abietic acid melt point (448 K) with complex oxidation products forming, such as dehydroabietic acid, palustric acid, 7-oxodehydroabietic acid, neoabietic acid, 7-methoxy-tetradehydroabietic acid, 12-deoxyroyleanone acid, and 12-methoxy-abietic acid.

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The effect of rosin acid on hydrodeoxygenation of fatty acid

Cited by 16 publications

References 49 publications

Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO₂‐Al₂O₃ catalyst: Process parameters optimization, kinetics, and thermodynamic study

Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO₂‐Al₂O₃ catalyst: Process parameters optimization, kinetics, and thermodynamic study

Obtaining salts of resin acids from Cuban pine by metathesis reactions

Thermal Stability of Abietic Acid and Its Oxidation Products

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The effect of rosin acid on hydrodeoxygenation of fatty acid

Cited by 16 publications

References 49 publications

Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO2‐Al2O3 catalyst: Process parameters optimization, kinetics, and thermodynamic study

Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO2‐Al2O3 catalyst: Process parameters optimization, kinetics, and thermodynamic study

Obtaining salts of resin acids from Cuban pine by metathesis reactions

Thermal Stability of Abietic Acid and Its Oxidation Products

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Product

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Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO₂‐Al₂O₃ catalyst: Process parameters optimization, kinetics, and thermodynamic study

Hydroprocessing of oleic acid for production of jet fuel range hydrocarbons over Sn(1)‐Fe(3)‐Cu(13)/SiO₂‐Al₂O₃ catalyst: Process parameters optimization, kinetics, and thermodynamic study