Synthesis of methyl biodiesel by esterification using magnetic nanoparticles coated with sulfonated lignin

Varão, Leandro Henrique Ribeiro; Silva, Thiago Alves Lopes; Zamora, Hernán Darí­o Zamora; Morais, Luís Carlos de; Pasquini, Daniel

doi:10.1007/s13399-021-02214-1

Cited by 12 publications

(5 citation statements)

References 56 publications

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Section: Xrd and Raman Analysissupporting

confidence: 80%

“…After sulfonation, the D of the Ni and Cu particles reduced to 24.30 nm and 27.30 nm. The decrease in D in metallic particles after sulfonation with H 2 SO 4 was also observed in studies by Varão et al[80] and Ibrarrim et al[84].After sulfonation, two diffraction peaks at 2θ ≈ 20-25 • and 2θ ≈ 40 • -45 • corresponding to Braggs reflection planes of (002) and (100) were observed, respectively. The (002) plane is attributed to the random order of aromatic carbon sheets and the (100) plane to amorphous carbon[85,86].…”

supporting

confidence: 80%

“…In the TGA profile of AC-S/NiCl 2 (Figure 3a) and CA-S/CuCl 2 (Figure 3c), three thermal decomposition events are observed, the first (25 to 100 • C) attributed to the vaporization of the water physically adsorbed in the sample [76]. The second (100 to 450 • C) refers to the decomposition of the surface groups present in the AC, such as the carboxylic groups (100 to 200 • C), lactones groups (200 to 400 • C) [77], and sulphonic groups (200 to 450 • C) [78][79][80]. The third event (450 to 900 • C) is attributed to the decomposition of the carbonic structure.…”

Section: Tga Analysismentioning

confidence: 99%

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Synthesis and Characterization of Acid-Activated Carbon Prepared from Sugarcane Bagasse for Furfural Production in Aqueous Media

Silva,

da Silva,

Pasquini

2023

Catalysts

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Furfural is a platform molecule obtained from hemicellulosic monosaccharides present in lignocellulosic biomass. Due to the possibility of converting this molecule into several value-added chemicals and the need to search for more sustainable production processes, the present work aimed to produce and characterize different sulfonated activated carbons (AC-S) from sugarcane bagasse (SCB) for application in furfural production in aqueous media. ACs were produced by chemical activation using salts of ZnCl2, NiCl2, and CuCl2 and a temperature and activation time of 550 °C and 3 h under nitrogen flow, respectively. Sulfonation was carried out with H2SO4 (98%) at a solid/liquid ratio of 1:10 at 160 °C for 2 h. Catalytic tests were performed using 5% catalyst mass regarding xylose, a temperature of 180 °C, and a reaction time of 2 h. ACs with high surface areas, ranging from 290 to 1100 m2 g−1, were produced. All catalysts had an increased sulfur content and total acidity after sulfonation, indicating the successful attachment of the sulfonic group (-SO3H) in the carbon matrix of the CAs. The AC-S/CuCl2 catalyst achieved the best catalytic performance compared to AC-S/ZnCl2, AC-S/NiCl2, and other acidic solids reported in the literature, achieving yield and selectivity of 55.96% and 83.93%, respectively. These results evidence the importance of the synergy between the Lewis and Brønsted acid sites on selective xylose dehydration and make AC-S/CuCl2 a promising acid catalyst for converting xylose to furfural in an aqueous medium.

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Section: Xrd and Raman Analysissupporting

confidence: 80%

supporting

confidence: 80%

Section: Tga Analysismentioning

confidence: 99%

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Synthesis and Characterization of Acid-Activated Carbon Prepared from Sugarcane Bagasse for Furfural Production in Aqueous Media

Silva,

da Silva,

Pasquini

2023

Catalysts

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“…It is noted that microalgae with bio-iron show enhanced esterification efficiency and a biodiesel conversion of 90%, whereas, in another study, MnFe 2 O 4 and CoFe 2 O 4 were inserted into sulfonated lignin for the esterification process, which gave 79.5% biodiesel conversion. 116 The catalyst was synthesized at 80 and 100°C temperature for a time duration of 4-6 h. Magnetic separation is another useful property of these catalysts, which allows them to be extracted from the reaction media and reused with little waste.…”

Section: Influence Of Nanoparticlesmentioning

confidence: 99%

Biomass‐derived sulfonated polycyclic aromatic carbon catalysts for biodiesel production by esterification reaction

Yadav

Ahmaruzzaman

2023

Biofuels Bioprod Bioref

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Sulfonated polycyclic aromatic carbon (SPAC) catalysts have specific surface characteristics owing to the presence of two types of functional groups: SO3H (sulfonic) and oxygen‐containing functional groups (COOH and OH groups). Oxygen‐containing functional groups provide a synergistic effect to the sulfonic group, resulting in a high total acid density and enhanced catalytic activity of SPAC. Owing to the high acid density, SPAC catalysts are used for various applications such as organic transformations, electrocatalysis and water treatment. The natural abundance of raw materials, easy processing for catalyst fabrication, excellent catalytic performance and high thermal and chemical stability make SPAC cost‐effective and environmentally benign. Biomass‐derived heterogeneous catalysts possess unique surface characteristics, high reusability and low cost owing to their easy accessibility, along with various environmental benefits. This review demonstrates biodiesel production using oleic acid as a feedstock material catalyzed by biomass‐derived SPAC catalysts. Additionally, various parameters such as catalyst synthetic parameters, esterification reaction parameters, the esterification reaction mechanism and catalytic stability, which affect the catalytic performance and esterification efficacy, are discussed. Finally, the future scope for developing novel SPAC catalysts has been demonstrated for young researchers in this field.

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“…MnFe 2 O 4 and CoFe 2 O 4 ferrite nanoparticles loaded with sulfonated lignin (SL) were used for the esterification of OA. 51 SL was deliberately produced by reacting sugarcane bagasse lignin with acetyl sulfate (SO 3 H agent). In order to create the magnetic nanoparticles, two distinct solids were created using differing reaction proportions.…”

Section: Process Of Biodiesel Formationmentioning

confidence: 99%

Advances in biomass derived low-cost carbon catalyst for biodiesel production: preparation methods, reaction conditions, and mechanisms

Yadav

Ahmaruzzaman

2023

RSC Adv.

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Synthesis of methyl biodiesel by esterification using magnetic nanoparticles coated with sulfonated lignin

Cited by 12 publications

References 56 publications

Synthesis and Characterization of Acid-Activated Carbon Prepared from Sugarcane Bagasse for Furfural Production in Aqueous Media

Synthesis and Characterization of Acid-Activated Carbon Prepared from Sugarcane Bagasse for Furfural Production in Aqueous Media

Biomass‐derived sulfonated polycyclic aromatic carbon catalysts for biodiesel production by esterification reaction

Advances in biomass derived low-cost carbon catalyst for biodiesel production: preparation methods, reaction conditions, and mechanisms

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