Brönsted acid surfactant-combined dicationic ionic liquids as green catalysts for biodiesel synthesis from free fatty acids and alcohols

Chang, Tao; He, Ling; Zhang, Xiaojing; Yuan, Manman; Qin, Shenjun; Zhao, Jiquan

doi:10.1016/s1872-2067(15)60852-x

Cited by 15 publications

(5 citation statements)

References 28 publications

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“…An overloading of the catalyst might promote the reverse reaction and reduce the yield of the methyl oleate. Likewise, the viscosity of the reaction media might increase due to the higher ILs catalyst concentration, which would reduce the contact between the reactant , .…”

Section: Resultsmentioning

confidence: 99%

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Producing Fatty Acid Methyl Esters from Free Fatty Acids with Ionic Liquids as Catalyst

et al. 2018

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Three Brønsted acidic imidazole dicationic ionic liquids (ILs) with different length of alkyl chains, [Cn(Mim)2][HSO4]2 (n = 3, 6, 12), were prepared and used as catalyst for the esterification reaction of free fatty acids and methanol. Taking oleic acid as model acid, the catalytic performances of the synthesized ILs for the esterification were evaluated. The main physicochemical properties of the ILs, thermal stability, acidity, solubility in common solvents, and causticity on Austenitic stainless steel 316, were examined. [C3(Mim)2][HSO4]2 demonstrated the highest catalytic activity and enabled to assess the preliminary optimum esterification condition of oleic acid and methanol. Under optimized reaction conditions, the yield of oleic acid methyl ester was up to 95 %. The ILs have great potential as catalysts for producing fatty acid methyl esters from long‐chain free fatty acids.

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Section: Resultsmentioning

confidence: 99%

“…The catalytic activity depended on both cation and anion. [C 12 Sb][p‐CH 3 C 6 H 4 SO 3 ] demonstrated excellent catalytic performance and recyclability .…”

Section: Introductionmentioning

confidence: 99%

Producing Fatty Acid Methyl Esters from Free Fatty Acids with Ionic Liquids as Catalyst

et al. 2018

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“…Chang et al 46 undertook the design and synthesis of eight amphiphilic binuclear ionic liquids (Fig. 6), for the esterification of fatty acids with low carbon alcohols.…”

Section: Synthesis Of Biodiesel Catalysed By Amphiphilic Ionic Liquid...mentioning

confidence: 99%

“…Fig.6The structures of eight ionic liquids. Reproduced with permission, copyright, 2015, Elsevier 46. …”

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confidence: 99%

Challenges and perspectives on using acidic ionic liquids for biodiesel production via reactive distillation

Qi,

Cui,

Lin

et al. 2024

Green Chem.

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“…Miao, Lv et al used 3-sulfopropylimidazolium hygrogensulfates for the transesterification of rapeseed oil [ 21 ]. Further research focused on increasing the number of SO 3 H- groups [ 22 , 23 , 24 ]. For example, Ma et al [ 25 ] prepared disulfonic-functionalized acid ionic liquids as efficient catalysts for biodiesel synthesis and carefully examined the role of hydrogen bonds.…”

Section: Introductionmentioning

confidence: 99%

Design and Synthesis of New Sulfonic Acid Functionalized Ionic Liquids as Catalysts for Esterification of Fatty Acids with Bioethanol

Nguyen Thi,

Koutecká,

Kaule

et al. 2023

Molecules

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In this study, three types of sulfonic acid group functionalized ionic liquids (SAILs) with a different number of catalytic groups and lipophilicity were synthesized and characterized by FT-IR, NMR, and MS analyses. Their catalytic activities were studied in a model esterification of oleic acid with ethanol; heating in a microwave reactor was also used. The experimental results indicated that SAIL, with the lipophilic alkyl chain, performed the best due to its increased solubility in the reaction mixture. Microwave heating was found to be more effective than conventional heating. Recycling experiments show that these novel SAILs can be reused without significant loss of the catalytic activity.

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Brönsted acid surfactant-combined dicationic ionic liquids as green catalysts for biodiesel synthesis from free fatty acids and alcohols

Cited by 15 publications

References 28 publications

Producing Fatty Acid Methyl Esters from Free Fatty Acids with Ionic Liquids as Catalyst

Producing Fatty Acid Methyl Esters from Free Fatty Acids with Ionic Liquids as Catalyst

Challenges and perspectives on using acidic ionic liquids for biodiesel production via reactive distillation

Design and Synthesis of New Sulfonic Acid Functionalized Ionic Liquids as Catalysts for Esterification of Fatty Acids with Bioethanol

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