Cerium–manganese oxide as catalyst for transesterification of soybean oil with subcritical methanol

Nasreen, Sadia; Liu, Hui; Qureshi, Liaqat Ali; Zakari, Sissou; Lukić, Ivana; Skala, Dejan

doi:10.1016/j.fuproc.2016.02.035

Cited by 22 publications

(14 citation statements)

References 41 publications

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“…It was observed that the TG conversion rapidly increased with increasing the reaction time from 30 to 60 min at 180 °C when La/Mn catalyst was used [1], after which the conversion kept rising slowly and reaching a plateau at about 99% after 90 min. With Ce/Mn catalyst, the TG conversion was increased to 98.9% after 40 min after reaching the isothermal reaction (140 °C), while the FAME yield was 74.7% [2]. The transesterification reaction over Sr-cinder catalyst indicated that the TG conversion remarkably increased from 82.9 to 99.7%, and FAME yield from 77.1 to 90.6%, when the reaction time was prolonged from 30 to 60 min [3].…”

Section: Review Of Transition Metals Lanthanide Actinide and Their mentioning

confidence: 94%

“…It seems that solid acid catalysts are more effective under severe condition of transesterification (HTT), compared to some base solid catalysts which usually show acceptable activity at lower and even ambient temperatures [8][9][10][11]. Activity of different catalysts, representing combination of manganese and rare earth metals like La/Mn [1] and Ce/Mn [2] or Sr (the alkaline earth metal) supported on cinder [3], was tested in the soybean oil transesterification with meth-anol under subcritical conditions (HTT). It was observed that the TG conversion rapidly increased with increasing the reaction time from 30 to 60 min at 180 °C when La/Mn catalyst was used [1], after which the conversion kept rising slowly and reaching a plateau at about 99% after 90 min.…”

Section: Review Of Transition Metals Lanthanide Actinide and Their mentioning

confidence: 99%

“…The kinetics was analyzed using results reported in literature for transesterification of vegetable oils catalyzed by 5 different catalysts [1][2][3][4][5]. The effect of the reaction temperature on the transesterification efficiency when these catalysts were used is presented in Figure 1.…”

Section: Kinetic Models Used For Heterogeneously Catalyzed Transestermentioning

confidence: 99%

“…Authors of these investigations reported that conversion of triacylglycerols changed from 2% at 100 °C to 97% at 160 °C after 8 h of reaction [4], and from 4% at 60 °C to 96% at 200 °C after 5 h of reaction [5]. The results of Ce/Mn-catalyzed transesterification indicated that the reaction rate was slow at 120 °C, with a TG conversion of only 48% after 1 h of process [2]. However, the increase in temperature to 140 °C led to the increase of the TG conversion up to 98.9% after 1 h [2].…”

Section: Kinetic Models Used For Heterogeneously Catalyzed Transestermentioning

confidence: 99%

“…Recently reported data related to the kinetics of transesterification over solid catalysts were most often based on LTT and only limited information could be found about the kinetics of transesterification process at high temperature. Thus, the goal of this study was to analyze the results from literature for several catalysts (La/Mn [1], Ce/Mn [2], Sr/cinder [3], Fe-Zn double-metal cyanide (DMC) complex [4], La 2 O 3 /ZrO 2 [5]) used in the HTT and to determine the most suitable kinetic model for representing a biodiesel synthesis under subcritical condition for methanol.…”

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Heterogeneous kinetics of vegetable oil transesterification at high temperature

Nasreen

Liu

Lukić³

et al. 2016

CI&CEQ

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Article Highlights • Kinetics of transesterification catalyzed by different catalysts from literature was analyzed • Transition and earth metals as catalyst for the high temperature transesterification • Three kinetic models were used for predicting the effect of high temperature transesterification • Apparent reaction rate constant and other parameters for more complicated models were determined Abstract Currently, the catalytic efficiency and reusability of the solid base catalysts cannot meet the demand of industrial biodiesel production under low temperature. The purpose of this study is to define the kinetics of heterogeneous transesterification process that could be used for the prediction of the biodiesel synthesis at high temperature and pressure. The focus in this study was paid to recently reported data obtained with different catalysts used for biodiesel synthesis in a batch reactor at high temperatures. It was shown that three kinetic models, including: a) irreversible first order reaction, b) reaction with changeable order and c) resistances of mass transfer and chemical reaction at active sites of the catalyst, could be applied for predicting the effect of high temperature of the transesterification. The apparent reaction rate constant of the irreversible first order reaction was determined, as well as the parameters of the other two, more complicated kinetic models. The best agreement was obtained with the more complicated models and the mean relative percent deviation between calculated and experimentally determined triacylglycerols conversion for these kinetic models is between 3 and 10%.

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Section: Review Of Transition Metals Lanthanide Actinide and Their mentioning

confidence: 94%

Section: Review Of Transition Metals Lanthanide Actinide and Their mentioning

confidence: 99%

Section: Kinetic Models Used For Heterogeneously Catalyzed Transestermentioning

confidence: 99%

Section: Kinetic Models Used For Heterogeneously Catalyzed Transestermentioning

confidence: 99%

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confidence: 99%

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Heterogeneous kinetics of vegetable oil transesterification at high temperature

Nasreen

Liu

Lukić³

et al. 2016

CI&CEQ

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Thermodynamic and kinetic studies for synthesis of glycerol carbonate from glycerol and diethyl carbonate over Ce–NiO catalyst

Zhang

Song

et al. 2018

Chem. Pap.

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Mesoporous Al–Mo Oxides as an Effective and Stable Catalyst for the Synthesis of Biodiesel from the Esterification of Free-Fatty Acids in Non-edible Oils

Zhang

Wei

et al. 2017

Waste Biomass Valor

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Cerium–manganese oxide as catalyst for transesterification of soybean oil with subcritical methanol

Cited by 22 publications

References 41 publications

Heterogeneous kinetics of vegetable oil transesterification at high temperature

Heterogeneous kinetics of vegetable oil transesterification at high temperature

Thermodynamic and kinetic studies for synthesis of glycerol carbonate from glycerol and diethyl carbonate over Ce–NiO catalyst

Mesoporous Al–Mo Oxides as an Effective and Stable Catalyst for the Synthesis of Biodiesel from the Esterification of Free-Fatty Acids in Non-edible Oils

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