Comparison of catalysts types performance in the generation of sustainable biodiesel via transesterification of various oil sources: a review study

Maleki, Basir; Talesha, S. Siamak Ashraf; Mansourib, Mohsen

doi:10.1016/j.mtsust.2022.100157

Cited by 40 publications

(22 citation statements)

References 116 publications

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“…As a starting material, waste cooking oil was used for the preparation of biodiesel which contained fatty acids. [58] Although cooking oil is a cheap feedstock, the preparation of biodiesel from that via the direct transformation using basic catalysts is challenging. [59] Transesterification of fatty acids to their corresponding alkyl esters in the presence of an acidic catalyst for the production of biodiesel is a useful strategy.…”

Section: Synthesis Of Bi/multifunctional Pom-based Hybridsmentioning

confidence: 99%

“…Zhang and co‐workers reported the synthesis of Zr 0.7 H 0.2 PW 12 O 40 catalyst with both Lewis and Brønsted acidic sites for the transesterification of waste cooking oil. As a starting material, waste cooking oil was used for the preparation of biodiesel which contained fatty acids [58] . Although cooking oil is a cheap feedstock, the preparation of biodiesel from that via the direct transformation using basic catalysts is challenging [59] .…”

Section: Pom‐based Inorganic‐organic Hybridsmentioning

confidence: 99%

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Polyoxometalate‐based Inorganic‐Organic Hybrids as Heterogeneous Catalysts for Asymmetric and Tandem Reactions

Najafi

2022

ChemCatChem

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Chiral and bi/multifunctional catalysts have contributed to the sustainability of organic transformations. Polyoxometalates (POMs) with diverse structures, good redox properties and oxidation abilities offer excellent opportunities in the area of asymmetric and one-pot tandem reactions. However, the potential applications of POM catalysts are limited due to their solubility in many solvents. One approach to cope with this problem is to combine them with organic units and generate POM-based inorganic-organic hybrid materials with unique structural characteristics. This review presents the targeted design of POM-based hybrids as heterogeneous catalysts for asymmetric and one-pot tandem reactions. Chirality induction from chiral POMs and/or organic linkers to the whole hybrid material as well as the possibility of self-assembly of building units via non-covalent interactions are described. It also discusses the catalytic sites ranging from POM salts to 3D POMbased frameworks with the focus on organic transformations such as oxidation, esterification and CÀ C bond formation.

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Section: Synthesis Of Bi/multifunctional Pom-based Hybridsmentioning

confidence: 99%

Section: Pom‐based Inorganic‐organic Hybridsmentioning

confidence: 99%

Polyoxometalate‐based Inorganic‐Organic Hybrids as Heterogeneous Catalysts for Asymmetric and Tandem Reactions

Najafi

2022

ChemCatChem

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“…In particular, the enzyme catalyst helps to overcome the issues with the use of acidic or basic catalysts in this production. In effect, the enzyme catalytic biodiesel production enables the (a) raw materials of biodiesel production having a high FFA content, which are low-cost and low-quality, to be used in the production, (b) avoidance of saponification during production, (c) production of high-quality biodiesel and glycerol (a byproduct), (d) the use of easy production methods, (e) the tolerance to water content in bio-oil (or any other feedstock) and a rise in biodiesel yield in the production and (f) energy-saving due to the transesterification reaction occurring at low temperatures [120].…”

Section: Enzyme Catalystsmentioning

confidence: 99%

State-of-the-art catalysts for clean fuel (methyl esters) production—a comprehensive review

et al. 2022

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There has been growing and recent interest in using non-edible feedstocks such as waste animal fats as alternate to vegetable oils in biodiesel production to address food vs fuel debate. The waste animal fats are cost effective and yield the biodiesel of good quality. Therefore, waste animal fats are appealing and excellent feedstocks to produce biodiesel. Commercially, the biodiesel is obtained by transesterification reaction of triglycerides present in oil/fat with alcohol in presence of homogeneous base catalysts. However, free fatty acids found in low-quality oil feedstocks are particularly sensitive to homogeneous base catalysts, necessitating extra acid pretreatment and neutralization procedures that not only raise the overall expense of producing biodiesel but also create environmental contamination. Optimistically, the use of solid catalysts can offer an environmentally friendly, cost-effective, and practical route for the manufacture of biodiesel from inexpensive oil feedstocks, including waste animal fat. The present review article covers catalyzed transesterification/esterification using various catalysts with particular focus on use of heterogeneous catalysts when using waste animal fat as feedstock for biodiesel production. Particularly, the properties of biodiesel obtained from waste animal fats are also compared to biodiesel properties of standard organizations such as European Committee of Standardization and the American Society for Testing and Materials. Moreover, this paper also offers future research directions that can direct researchers to fill in knowledge gaps impeding the creation of efficient heterogeneous catalysts for long-term biodiesel generation. To the best of our knowledge, the valorization of waste animal fats from slaughterhouse is not feasible and have some techno-economic concerns. However, this technology is more desirable considering environmental point of view to address the pollution problems caused by these wastes.

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“…Large quantities of free fatty acids (FFAs) decrease the yield of fatty acid methyl esters (FAMEs) [1]. Thus, oils used in alkaline transesterification should have less than 1% w/w FFA [1][2][3]. In the presence of an alkaline catalyst, FFAs form soap when the FFA levels in the oil exceed this threshold, forming stable emulsions.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Modeling of the Esterification of Oleic Acid and Methanol in Conventional and Adsorptive Reaction Systems

Fernandes¹

2022

Catal Res

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Biodiesel is derived from renewable vegetable or animal sources and is either used as a standalone fuel or blended with oil-based diesel. The kinetic mechanism of the esterification of oleic acid was investigated in a conventional batch reactor and a batch reactor coupled to a water adsorption system. The esterification was performed with oleic acid and methanol at different temperatures (70 to 110 °C) and alcohol-to-oleic acid molar ratios (3:1 to 9:1), using sulfuric acid as a catalyst. A kinetic model was constructed and validated. The model was statistically significant at a 95% confidence level, thus proving its effectiveness in predicting oleic acid esterification with methanol using sulfuric acid as a catalyst.

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Comparison of catalysts types performance in the generation of sustainable biodiesel via transesterification of various oil sources: a review study

Cited by 40 publications

References 116 publications

Polyoxometalate‐based Inorganic‐Organic Hybrids as Heterogeneous Catalysts for Asymmetric and Tandem Reactions

Polyoxometalate‐based Inorganic‐Organic Hybrids as Heterogeneous Catalysts for Asymmetric and Tandem Reactions

State-of-the-art catalysts for clean fuel (methyl esters) production—a comprehensive review

Kinetic Modeling of the Esterification of Oleic Acid and Methanol in Conventional and Adsorptive Reaction Systems

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