Easy Epoxidation of Monoterpenes from Common Starting Materials

Bermudez, John H.; Rojas, Giovanni; Benítez, Ricardo; Franco, J. M.

doi:10.21577/0103-5053.20190253

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The αpinene and β-pinene are molecules made up of the same type and number of atoms (isomers) and shaped like mirror images of each other, and usually occur together in most plant and industrial compounds. Because of this, α-pinene and β-pinene have very similar effects on the human body, and relative differences in effects are difficult to distinguish (Pekgozlu and Ceylan, 2018;Bermudez et al, 2020). It is of great significance to study efficient and practical methods to remove the VOCs emitted during the manufacture and processing of biomass briquette fuel (Li H.-Y.…”

Section: Introductionmentioning

confidence: 99%

Metal-Organic Framework Supporting Fe3O4 Prepared by Microwave in Couple With NTP to Eliminate VOCs From Biofuel

et al. 2022

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In the production process of briquette biofuel, terpenes such as pinene and camphene, as well as non-terpenoid VOCs such as formic acid, acetaldehyde, and benzene, are generated during conditioning, drying and other procedures. Different catalysts of Fe3O4 supported by CoFe-ZIFs were prepared by thermal dissolution method and microwave dissolution method with changing the doping amount of iron. The structures of these catalysts were characterized by X-ray Diffraction (XRD), Fourier transform infrared spectrometer Fourier-Transformed InfraRed, thermogravimetric analysis (TG), and scanning electron microscope and the catalytic performance for α-pinene was tested on a fixed bed. The results show that, compared with the thermal dissolution method, the microwave dissolution method was easier to induce iron to form Fe3O4 grains with higher activity. At the same time, the grains did not affect the formation of CoFe-ZIFs structure. Fe3O4 supported on CoFe-ZIFs enhanced the catalytic activity and energy efficiency of the catalysts for α-pinene. Among the test samples, CoFe14-ZIF-W prepared by microwave method with Fe doping 14% mol exhibited the stable structural characteristics and the highest catalytic efficiency of 94.3% and energy efficiency of 8.11 g·kWh−1, which provided a further possibility of practical application for the removal of VOCs from biomass.

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Section: Introductionmentioning

confidence: 99%

Metal-Organic Framework Supporting Fe3O4 Prepared by Microwave in Couple With NTP to Eliminate VOCs From Biofuel

et al. 2022

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R-(+)-limonene diastereoselective epoxidation: A minireview about of the synthesis methods

Rodríguez¹,

Lobo

2022

Cienc. En Desarro.

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R-(+)-limonene epoxidation has been focused from different synthesis methods. Thanks to the optically active epoxides obtained from this reaction are widely employed at industrial level, like: agrochemicals, polymers, cosmetics, pharmaceuticals. A key point found in this topic has been the asymmetric induction to improve the yield to the diastereomers of 1,2-limonene oxide. Many catalysts have been developed for the diastereoselective epoxidation, but some oxidation methodology have not been so useful. The enzymes and the Jacobsen´s catalyst presented the highest selectivity towards the endocyclic epoxides diastereomers, while other catalysts like metals supported on mesoporous materials were directed to one or more oxidation products, reducing their potential industrial scaling. Also, it was evidenced that controlling the reaction parameters it allows the segregation homogeneous catalyst to a phase different from the reaction products, thus increasing its useful reutilization in several reaction cycles. This minireview confronts the different systems used for the diastereoselective epoxidation of R-(+)-limonene. Challenges, issues and trends of said chemical transformation are also discussed.

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Catalytic Epoxidation of 3-Carene and Limonene with Aqueous Hydrogen Peroxide, and Selective Synthesis of α-Pinene Epoxide from Turpentine

2021

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The epoxidation of turpentine (technical α-pinene), 3-carene, and limonene with aqueous hydrogen peroxide was studied in a new catalytic system employing manganese sulfate, salicylic acid, sodium bicarbonate, and acetonitrile, as a polar solvent. The proposed approach makes it possible to carry out a “chemical separation” of turpentine components, yielding valuable individual derivatives of monoterpenes without the need to isolate individual monoterpene reagents. Specific methods have been developed for the production of α-pinene epoxide, 3-carene epoxide, limonene diepoxide, as well as for two related compounds: 3-carene-5-one and 3-carene-2,5-dione.

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Easy Epoxidation of Monoterpenes from Common Starting Materials

Cited by 3 publications

References 16 publications

Metal-Organic Framework Supporting Fe3O4 Prepared by Microwave in Couple With NTP to Eliminate VOCs From Biofuel

Metal-Organic Framework Supporting Fe3O4 Prepared by Microwave in Couple With NTP to Eliminate VOCs From Biofuel

R-(+)-limonene diastereoselective epoxidation: A minireview about of the synthesis methods

Catalytic Epoxidation of 3-Carene and Limonene with Aqueous Hydrogen Peroxide, and Selective Synthesis of α-Pinene Epoxide from Turpentine

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