Direct esterification of olive-pomace oil using mesoporous silica supported sulfonic acids

Alrouh, F.; Karam, Ayman; Alshaghel, Ahmad; El-Kadri, Saleh

doi:10.1016/j.arabjc.2012.07.034

Cited by 16 publications

(8 citation statements)

References 13 publications

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“…On the other hand, Alrouh et al. 73 synthesized sulfonic acid supported on MCM‐41 (HSO 3 MCM‐41) with a surface area of 833.70 m 2 g −1 . The catalyst was utilized in glycerol esterification with olive‐pomace oil containing palmitic acid and oleic acid to synthesize glycerol monopalmitate (GMP) and glycerol monooeleate (GMO).…”

Section: Glycerol Conversion To Value‐added Productsmentioning

confidence: 99%

“…Mesoporous catalysts containing sulfonic groups, i.e., HSO 3 SBA-15 and HSO 3 MCM-41, have been proved to be effective catalysts in the reaction involving glycerol and lauric acid. These catalysts have porous channels, highly polar and strong hydrophilic interaction between the silica frameworks which favor the desorption of the targeted amphiphilic monomers from the catalytic surface [73].…”

Section: Functionalized Mesoporous Silica-based Catalystsmentioning

confidence: 99%

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Esterification of Glycerol Derived from Biodiesel with Fatty Acids to Monoglycerides – Malaysian Perspective

et al. 2022

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The rapid increase of biodiesel production in Malaysia generates enormous quantities of crude glycerol as the primary co‐product along with the biodiesel which has limited application in local industries. The conversion of glycerol to higher‐value products like monoglycerides seems to be an attractive route. Various heterogeneous catalysts have been investigated to produce monoglycerides via esterification with fatty acids, but the application is limited to short‐chain fatty acids such as lauric acid. Solid catalysts, the parameters affecting reaction mechanisms and pathways, and kinetics of esterification of glycerol reactions are reviewed to highlight the need of superacidic mesoporous catalysts for demonstrating the catalytic activity towards the formation of monopalmitin with high palmitic acid conversion. Esterification of fatty acids to produce monoglycerides is the best approach to reduce the amount of glycerol but it is necessary to synthesize innovative and selective catalysts such as modified mesoporous catalysts to enhance the overall yield of monoglycerides. This would not only solve the problem of crude glycerol but also lead to sustainable biodiesel production especially in the context of Malaysian economy.

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Section: Glycerol Conversion To Value‐added Productsmentioning

confidence: 99%

Section: Functionalized Mesoporous Silica-based Catalystsmentioning

confidence: 99%

Esterification of Glycerol Derived from Biodiesel with Fatty Acids to Monoglycerides – Malaysian Perspective

et al. 2022

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“…Olive pomace oil hydrotreating, at moderate temperatures to produce liquid biofuel, might be a viable option for its valorization, reported Pinto et al [7]. Alrouh et al [8] studied the production of monoacylglycerols of the fatty acid by direct esterification of olive-pomace oil and glycerol in the presence of acid homogeneous and heterogeneous catalysts. Others investigated its transformation on biodiesel [9].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Tunisian Olive Pomace Oil Esterification Using Response Surface Methodology

Hadhri

Hamzaoui²,

Ayed

et al. 2019

Chemistry Africa

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Several countries around the world are interested in the valorization of agricultural waste. Olive pomace oil is claimed to be a promising feedstock for biodiesel production. Alkaline transesterification is the most used method for biodiesel production, but the high amount of free fatty acids in feedstock prevents its occurrence. A pretreatment step, which is an acid esterification reaction, is necessary for the reduction of free fatty acids. The main purpose of this work is to optimize experimentally the olive pomace oil esterification using Response Surface Methodology (RSM) combined with the Central Composite Design (CCD). RSM was employed to study the relationships of reaction time, reaction temperature, methanol to oil molar ratio and catalyst concentration on olive pomace oil acidity. RSM predicted optimal conditions for esterification reaction. The oil acidity was reduced from 15 to 0.8 mg KOH g −1 with methanol to oil molar ratio 10.5:1, sulfuric acid 2.5%, reaction temperature 70 °C and reaction time 90 min. The quadratic term of temperature and catalyst concentration were the most significant effects while reaction time was not significant.

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“…It was previously reported that mesoporous materials modied by sulfonic acid are unstable to hydrothermal treatment, and their structure tends to break down at prolonged contact with water. 11 Synthesis of SBA-15 with thiol groups based on TEOS (tetraethyl orthosilicate) by post-synthetic oxidation of the surface groups with hydrogen peroxide 2,[12][13][14] or concentrated nitric acid, 5,15 or single stage oxidation of SH-groups during the template synthesis 12,14,16,17 are quite widespread. Also for this purpose different structure-forming agents, such as 1,2-bis(trimethoxysilyl)ethane (BTME), 5 1,4-bis (triethoxysilyl)benzene [(BTEB)] 18 and BTME mixture with TMOS (tetramethylorthosilicate) 5 and others, have been applied.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of sulfur-containing hybrid materials based on sodium silicate

Дударко

Bárány

2018

RSC Adv.

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Direct esterification of olive-pomace oil using mesoporous silica supported sulfonic acids

Cited by 16 publications

References 13 publications

Esterification of Glycerol Derived from Biodiesel with Fatty Acids to Monoglycerides – Malaysian Perspective

Esterification of Glycerol Derived from Biodiesel with Fatty Acids to Monoglycerides – Malaysian Perspective

Optimization of Tunisian Olive Pomace Oil Esterification Using Response Surface Methodology

Synthesis and characterization of sulfur-containing hybrid materials based on sodium silicate

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