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Eco-friendly aerobic epoxidation of olefins using recyclable NiFe2O4@SO3H@AC magnetic nanoparticles.

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Title: Eco-friendly aerobic epoxidation of olefins using recyclable NiFe2O4@SO3H@AC magnetic nanoparticles.
Authors: Al Omari, Rima Heider1 (AUTHOR) r.alomari@ammanu.edu.jo, Kumar, Anjan2 (AUTHOR) dranjan.nitp@gmail.com, Al-Hussainy, Ali Fawzi3 (AUTHOR) Ali.Faowzy2.1991@gmail.com, Mohammed, Shaker4,5 (AUTHOR) Shakermohammed@iunajaf.edu.iq, Sinha, Aashna6 (AUTHOR) aashna07sinha@gmail.com, Ray, Subhashree7 (AUTHOR) sbhashreeray@soa.ac.in, Sajjadi, Ahmad8 (AUTHOR) sajjadiahmmad@gmail.com
Source: Research on Chemical Intermediates. Feb2026, Vol. 52 Issue 2, p993-1040. 48p.
Subjects: Epoxidation, Catalysts recycling, Green products, Alkenes, Magnetic nanoparticles, Sustainable chemistry
Abstract: The epoxidation of olefins is a pivotal reaction in organic synthesis, yielding epoxides that serve as essential intermediates in the production of pharmaceuticals, polymers, and fine chemicals. Conventional epoxidation methods often employ hazardous oxidants and nonrecyclable catalysts, leading to significant environmental and economic drawbacks. This study presents a novel, eco-friendly approach for the aerobic epoxidation of olefins utilizing recyclable NiFe2O4@SO3H@AC magnetic nanoparticles. The catalyst comprises nickel ferrite (NiFe2O4) for magnetic separability, sulfonic acid groups (SO3H) to provide acidic catalytic sites, and activated carbon (AC) to enhance surface area and adsorption properties. Employing molecular oxygen as the terminal oxidant, this system offers a sustainable alternative to traditional methods. The NiFe2O4@SO3H@AC catalyst demonstrates high activity and selectivity across a range of olefins, with excellent recyclability, maintaining performance over multiple reaction cycles. Characterization techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FT-IR), confirm the structural integrity and functionality of the catalyst. This work advances the field of green catalysis by providing an efficient, recyclable, and environmentally benign method for olefin epoxidation, addressing critical challenges in sustainability and industrial applicability, and instilling confidence in its reliability. [ABSTRACT FROM AUTHOR]
Copyright of Research on Chemical Intermediates is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The epoxidation of olefins is a pivotal reaction in organic synthesis, yielding epoxides that serve as essential intermediates in the production of pharmaceuticals, polymers, and fine chemicals. Conventional epoxidation methods often employ hazardous oxidants and nonrecyclable catalysts, leading to significant environmental and economic drawbacks. This study presents a novel, eco-friendly approach for the aerobic epoxidation of olefins utilizing recyclable NiFe2O4@SO3H@AC magnetic nanoparticles. The catalyst comprises nickel ferrite (NiFe2O4) for magnetic separability, sulfonic acid groups (SO3H) to provide acidic catalytic sites, and activated carbon (AC) to enhance surface area and adsorption properties. Employing molecular oxygen as the terminal oxidant, this system offers a sustainable alternative to traditional methods. The NiFe2O4@SO3H@AC catalyst demonstrates high activity and selectivity across a range of olefins, with excellent recyclability, maintaining performance over multiple reaction cycles. Characterization techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FT-IR), confirm the structural integrity and functionality of the catalyst. This work advances the field of green catalysis by providing an efficient, recyclable, and environmentally benign method for olefin epoxidation, addressing critical challenges in sustainability and industrial applicability, and instilling confidence in its reliability. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Research on Chemical Intermediates is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11164-025-05833-9
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      – TitleFull: Eco-friendly aerobic epoxidation of olefins using recyclable NiFe2O4@SO3H@AC magnetic nanoparticles.
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              Text: Feb2026
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              Y: 2026
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