Biodiesel production via esterification of oleic acid catalyzed by chlorosulfonic acid modified zirconia

Zhang, Yue; Wong, Wing Tak; Yung, Ka Fu

doi:10.1016/j.apenergy.2013.11.044

Cited by 123 publications

(58 citation statements)

References 37 publications

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“…The conversion of oil is was observed to increase from 2 to 8 wt% (wt/wt oil) and then decrease with 10 % (wt/wt oil) amount of V(4.8 wt%)/RSM. The increased reaction rate results from the increase in the total number of active sites available for the reaction as amount of catalyst increases [42]. The use of large amount of catalyst may make the reaction mixture more viscous, thus enhancing the mass transfer resistance in the heterogeneous reaction system [11].…”

Section: Effect Of V Loading and Amount Of Catalystmentioning

confidence: 99%

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Nanorice-shaped mesoporous V/RSM as an efficient and reusable catalyst for biodiesel production from soybean oil

Fazaeli

Aliyan

2015

J Sol-Gel Sci Technol

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Sol-gel method was used to synthesize a nanorice-shaped mesoporous V/RSM, which was characterized by FTIR, XRD, BET, UV-Vis and TEM. The mesostructure of silica remains intact after following vanadium modification, as shown by absorption-desorption analysis, while spectral techniques indicate the successful immobilization of the neat vanadium oxide inside the porous silica support. Furthermore, soybean oil was has been used as the feedstock in the preparation of biodiesel by V/RSM-catalyzed transesterification process. Various reaction parameters, including methanol/oil molar ratio, reaction time, catalyst mass and reaction temperature, were studied investigated with regard to their effect on the reaction. A remarkable conversion of 94 % was obtained achieved using a 8 % (wt/wt oil) of V(4.8)/RSM catalyst, methanol/oil molar ratio of 12:1 and reflux temperature of methanol during 8 h. The solid catalyst can be reused over at least six cycles under mild conditions. Graphical abstractKeywords Biodiesel Á Vegetable oil Á Supported vanadia catalyst Á Rice-shaped mesoporous (RSM)

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Section: Effect Of V Loading and Amount Of Catalystmentioning

confidence: 99%

“…[40,41]. The catalyst with higher acidity supplies more acid sites and stronger acid strength would lead to a more effective protonation of the carbonyl groups of fatty acids to initiate esterification and transesterification reactions [42].…”

Section: Physico-chemical Characterizationmentioning

confidence: 99%

Nanorice-shaped mesoporous V/RSM as an efficient and reusable catalyst for biodiesel production from soybean oil

Fazaeli

Aliyan

2015

J Sol-Gel Sci Technol

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“…Also, the accumulation of the water on the surface of the catalyst hinders the accessibility of active sites. However the catalytic membrane overcomes this problem of sorption of water because of its hydrophilic character [10][11][12].…”

Section: Effect Of the Sulfosuccinic Acid Concentrationmentioning

confidence: 99%

Biodiesel from Oleic Acid by Green Catalyst "Catalytic Membrane": a Solution to Global Warming Problems

2017

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In recent years biodiesel is receiving more attention as a sustainable alternative to fossil fuel. Biodiesel has lower exhaust emissions and toxicity compared to petroleum diesel fuel. In this study, biodiesel is produced from the oleic acid esterification process. We try to develop an efficient heterogeneous catalyst for biodiesel synthesis. A catalytic membrane carboxymethyl cellulose with sulfosuccinic acid has been prepared for using as catalyst. Carboxymethyl cellulose is a natural and biodegradable polymer and it has the advantage of green catalysis. Sulfosuccinic acid is a homogeneous catalyst. To overcome the disadvantages of the homogenous catalyst, sulfosuccinic acid is used together with polymeric membranes. The effects of the ethanol/oleic acid molar ratio, the reaction temperature, the sulfosuccinic acid concentration and the stirring speed were investigated to find out the optimum reaction conditions. The catalytic stability of the catalytic membrane is also studied. The optimum conditions for the reaction were found to be 65• C, catalytic membrane with 6 mmol of sulfosuccinic acid, 9:1 ethanol to oleic acid molar ratio and 600 rpm stirring speed. The oleic acid conversion using the catalytic membrane was 85% under these conditions after 6 h. Our findings show that carboxymethyl cellulose membrane with sulfosuccinic acid groups is a suitable catalyst for esterification.

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“…This phenomenon could be explained by dilution effect, which decreased concentration of catalyst due to excessive methanol. 46,47 3.3.2 The effect of catalyst dosage. The conversion lied slowly with catalyst dosage increased to 5 wt% with methanol/ oleic acid molar ratio of 9/1 at 80 C for 4 h (Fig.…”

Section: Esterication Of Oleic Acid With Methanolmentioning

confidence: 99%

Polyoxometalate-MgF₂hybrids as heterogeneous solid acid catalysts for efficient biodiesel production

et al. 2017

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A series of highly active and stable Keggin heteropolyacid catalysts were prepared through mixing of 12-tungstophosphoric acid (TPA) with magnesium fluoride (MgF 2 ). Among those acidic catalysts, the Mg 20 F 39 TPA-1.0 hybrid with moderate acidity (0.96 mmol g À1) and good dispersion of active sites presented pronounced catalytic performance in esterification of oleic acid (up to 95% oleic acid conversion). Particularly, Mg 20 F 39 TPA-1.0 was also efficient for the transesterification of Jatropha oil with a high acid value, giving biodiesel in 93% yield. Moreover, the catalyst showed good durability and reusability for at least five consecutive cycles.

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Biodiesel production via esterification of oleic acid catalyzed by chlorosulfonic acid modified zirconia

Cited by 123 publications

References 37 publications

Nanorice-shaped mesoporous V/RSM as an efficient and reusable catalyst for biodiesel production from soybean oil

Nanorice-shaped mesoporous V/RSM as an efficient and reusable catalyst for biodiesel production from soybean oil

Biodiesel from Oleic Acid by Green Catalyst "Catalytic Membrane": a Solution to Global Warming Problems

Polyoxometalate-MgF₂hybrids as heterogeneous solid acid catalysts for efficient biodiesel production

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Biodiesel production via esterification of oleic acid catalyzed by chlorosulfonic acid modified zirconia

Cited by 123 publications

References 37 publications

Nanorice-shaped mesoporous V/RSM as an efficient and reusable catalyst for biodiesel production from soybean oil

Nanorice-shaped mesoporous V/RSM as an efficient and reusable catalyst for biodiesel production from soybean oil

Biodiesel from Oleic Acid by Green Catalyst "Catalytic Membrane": a Solution to Global Warming Problems

Polyoxometalate-MgF2hybrids as heterogeneous solid acid catalysts for efficient biodiesel production

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Polyoxometalate-MgF₂hybrids as heterogeneous solid acid catalysts for efficient biodiesel production