Catalyst -Free Biodiesel Production from Industrial Rosin Residue (Dark-Grade Rosin) Using Supercritical Methanol

Wang, Linlin; Cheng-rong, Huang; Chen, Jianyun; Wei, Xiaojie; Chen, Xiaopeng; Liang, Jiezhen

doi:10.1007/s12649-017-9848-6

Cited by 6 publications

(5 citation statements)

References 35 publications

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“…The usage of rosin as a fuel may become increasingly popular in the future. Rosin is a desirable source for biofuel [37,38]. Oleoresin consists mostly of rosin, which makes up around 80% of its composition.…”

Section: Rosin-methanolmentioning

confidence: 99%

Recent Progress on Catalytic of Rosin Esterification Using Different Agents of Reactant

Mardiah,

Samadhi,

Wulandari

et al. 2023

AgriEngineering

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Gum rosin is an important agricultural commodity which is widely used as a raw material for various industries. However, gum rosin has low stability, crystallizes easily, and tends to oxidize. This is due to carboxyl groups and conjugated double bonds in gum rosin’s structure. Therefore, to reduce these weaknesses, it is necessary to modify the rosin compound to achieve better stability via the esterification process. This paper surveys esterification agents such as glycerol, pentaerythritol, methanol, ethylene glycol, polyethylene glycol (PEG), allyl group, and starch Rosin ester. The product is used in the manufacture of pressure-sensitive adhesives, drug delivery, solder flux for electronic devices, as a plasticizer, and as a coating agent in fertilizers. In general, the esterification reaction between alcohols and carboxylic acids is very slow without a catalyst. Heterogeneous catalysts have the advantage of controlling size, structure, spatial distribution, surface composition, thermal-chemical stability, and selectivity. Among the catalysts for gum rosin esterification are ZSM-5, Fe3O4, ZnO, Calcium, TiO2, Kaolin, and Al2O3, among others. Different catalysts and esterification agents can produce various physical and chemical properties of rosin ester and will result in specific rosin ester products, such as glycerol ester, pentaerythritol ester, methyl ester, glycol ester, allyl ester, and acid starch-based rosin.

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Section: Rosin-methanolmentioning

confidence: 99%

Recent Progress on Catalytic of Rosin Esterification Using Different Agents of Reactant

Mardiah,

Samadhi,

Wulandari

et al. 2023

AgriEngineering

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“…Rosin-based standard-quality biodiesel can be prepared in a catalyst-free process from dark-grade rosin, heavy turpentine and supercritical methanol in supercritical CO 2 as a green medium. Yields >93% were obtained after 3 h at 340 °C, under a pressure of 11 MPa [212]. Yield of >85% can be achieved using Pt/mesoporous aluminosilicate catalyst after 4 h at 300–350 °C, 5 MPa [213].…”

Section: Rosin-based Chemicalsmentioning

confidence: 99%

Advances in Rosin-Based Chemicals: The Latest Recipes, Applications and Future Trends

et al. 2019

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A comprehensive review of the publications about rosin-based chemicals has been compiled. Rosin, or colophony, is a natural, abundant, cheap and non-toxic raw material which can be easily modified to obtain numerous useful products, which makes it an excellent subject of innovative research, attracting growing interest in recent years. The last extensive review in this research area was published in 2008, so the current article contains the most promising, repeatable achievements in synthesis of rosin-derived chemicals, published in scientific literature from 2008 to 2018. The first part of the review includes low/medium molecule weight compounds: Especially intermediates, resins, monomers, curing agents, surfactants, medications and biocides. The second part is about macromolecules: mainly elastomers, polymers for biomedical applications, coatings, adhesives, surfactants, sorbents, organosilicons and polysaccharides. In conclusion, a critical evaluation of the publications in terms of data completeness has been carried out with an indication of the most promising directions of rosin-based chemicals development.

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“…In addition, it could improve the performance of biofuels as a value-added fuel additive [ 12 – 14 ]. Gum rosin is produced at an estimated 1,200,000 tonnes per year worldwide, and its use as a raw industrial material has been widespread.…”

Section: Introductionmentioning

confidence: 99%

Thermal stability of levopimaric acid and its oxidation products

Li,

Chen,

Yan

et al. 2023

BMC Chemistry

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Biofuels are renewable alternatives to fossil fuels. Levopimaric acid‒base biofuels have attracted increasing attention. However, their stability remains a critical issue in practice. Thus, there is a strong impetus to evaluate the thermal stability of levopimaric acid. Through thermogravimetry (TG) and a custom-designed mini closed pressure vessel test (MCPVT) operating under isothermal and stepped temperature conditions, we investigated thermal oxidation characteristics of levopimaric acid under oxygen atmosphere. Thin-layer chromatography (TLC) and iodimetry were used to measure the hydrogen peroxides generated by levopimaric acid oxidation. A high pressure differential scanning calorimeter (HPDSC) was used to assess hydroperoxide thermal decomposition characteristics. Gas chromatography-mass spectrometry (GC-MS) was used to characterize the oxidation products. The thermal decomposition kinetics of levopimaric acid were thus elucidated, and a high peroxide value was detected in the levopimaric acid. The decomposition heat (QDSC) and exothermic onset temperature (Tonset) of hydroperoxides were 338.75 J g−1 and 375.37 K, respectively. Finally, levopimaric acid underwent a second-stage oxidation process at its melt point (423.15 K), resulting in complex oxidation products. Thermal oxidation of levopimaric acid could yield potential thermal hazards, indicating that antioxidants must be added during levopimaric acid application to protect against such hazardous effects.

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Catalyst -Free Biodiesel Production from Industrial Rosin Residue (Dark-Grade Rosin) Using Supercritical Methanol

Cited by 6 publications

References 35 publications

Recent Progress on Catalytic of Rosin Esterification Using Different Agents of Reactant

Recent Progress on Catalytic of Rosin Esterification Using Different Agents of Reactant

Advances in Rosin-Based Chemicals: The Latest Recipes, Applications and Future Trends

Thermal stability of levopimaric acid and its oxidation products

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