Research Progress in Epoxidation of Light Small-Molecule Olefins

Light olefins, as important bulk raw materials in the petrochemical industry, play an irreplaceable role in the development of the manufacturing industry and the economy. The epoxides of light olefins are important intermediates for the synthesis of polymers, drugs, and fine chemicals, and their gre...

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Main Authors: Guanghui Zhao, Tianfu Yang, Jincheng Liu, Xianming Xu, Yulong Wang, Yongjun Zhang, Meng Gao, Chao Xiong, Hongbing Ji
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Molecules
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Online Access:https://www.mdpi.com/1420-3049/30/6/1340
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author Guanghui Zhao
Tianfu Yang
Jincheng Liu
Xianming Xu
Yulong Wang
Yongjun Zhang
Meng Gao
Chao Xiong
Hongbing Ji
author_facet Guanghui Zhao
Tianfu Yang
Jincheng Liu
Xianming Xu
Yulong Wang
Yongjun Zhang
Meng Gao
Chao Xiong
Hongbing Ji
author_sort Guanghui Zhao
collection DOAJ
description Light olefins, as important bulk raw materials in the petrochemical industry, play an irreplaceable role in the development of the manufacturing industry and the economy. The epoxides of light olefins are important intermediates for the synthesis of polymers, drugs, and fine chemicals, and their green, efficient, and safe synthesis has attracted much attention. This review focuses on the research progress of light olefin epoxidation and elucidates traditional epoxidation methods, such as the chlorohydrin method. Although these processes have mature processes, they have drawbacks, including equipment corrosion, environmental pollution, poor safety, and high waste emissions. Special emphasis is placed on catalytic epoxidation systems using oxygen or organic peroxides as oxygen sources. For homogeneous catalytic systems, certain metal complexes exhibit high activity and selectivity yet are difficult to separate and recycle. Moreover, heterogeneous catalytic systems have become a research hotspot due to their advantages of easy separation and reusability, with supported metal catalysts being a prime example. Meanwhile, the effects of reaction temperature, pressure, solvent, etc., on epoxidation are explored. The specific reaction mechanisms are also studied and analyzed. Current research challenges, including enhancing catalyst stability and reducing costs, are summarized. In the future, developing highly efficient, green, and economically viable epoxidation technologies for large-scale industrial applications represents an important research direction in this field.
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spelling doaj-art-b7781ec3d2e84a4dbd2728d2174f22252025-08-20T03:43:34ZengMDPI AGMolecules1420-30492025-03-01306134010.3390/molecules30061340Research Progress in Epoxidation of Light Small-Molecule OlefinsGuanghui Zhao0Tianfu Yang1Jincheng Liu2Xianming Xu3Yulong Wang4Yongjun Zhang5Meng Gao6Chao Xiong7Hongbing Ji8Daqing Petrochemical Research Center, PetroChina Petrochemical Research Institute, Da’qing 163714, ChinaSchool of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaDaqing Petrochemical Research Center, PetroChina Petrochemical Research Institute, Da’qing 163714, ChinaDaqing Petrochemical Research Center, PetroChina Petrochemical Research Institute, Da’qing 163714, ChinaDaqing Petrochemical Research Center, PetroChina Petrochemical Research Institute, Da’qing 163714, ChinaDaqing Petrochemical Research Center, PetroChina Petrochemical Research Institute, Da’qing 163714, ChinaDaqing Petrochemical Research Center, PetroChina Petrochemical Research Institute, Da’qing 163714, ChinaState Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Institute of Green Petroleum Processing and Light Hydrocarbon Conversion, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaSchool of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, ChinaLight olefins, as important bulk raw materials in the petrochemical industry, play an irreplaceable role in the development of the manufacturing industry and the economy. The epoxides of light olefins are important intermediates for the synthesis of polymers, drugs, and fine chemicals, and their green, efficient, and safe synthesis has attracted much attention. This review focuses on the research progress of light olefin epoxidation and elucidates traditional epoxidation methods, such as the chlorohydrin method. Although these processes have mature processes, they have drawbacks, including equipment corrosion, environmental pollution, poor safety, and high waste emissions. Special emphasis is placed on catalytic epoxidation systems using oxygen or organic peroxides as oxygen sources. For homogeneous catalytic systems, certain metal complexes exhibit high activity and selectivity yet are difficult to separate and recycle. Moreover, heterogeneous catalytic systems have become a research hotspot due to their advantages of easy separation and reusability, with supported metal catalysts being a prime example. Meanwhile, the effects of reaction temperature, pressure, solvent, etc., on epoxidation are explored. The specific reaction mechanisms are also studied and analyzed. Current research challenges, including enhancing catalyst stability and reducing costs, are summarized. In the future, developing highly efficient, green, and economically viable epoxidation technologies for large-scale industrial applications represents an important research direction in this field.https://www.mdpi.com/1420-3049/30/6/1340light olefinssmall moleculesepoxidationcatalysis mechanismresearch progress
spellingShingle Guanghui Zhao
Tianfu Yang
Jincheng Liu
Xianming Xu
Yulong Wang
Yongjun Zhang
Meng Gao
Chao Xiong
Hongbing Ji
Research Progress in Epoxidation of Light Small-Molecule Olefins
Molecules
light olefins
small molecules
epoxidation
catalysis mechanism
research progress
title Research Progress in Epoxidation of Light Small-Molecule Olefins
title_full Research Progress in Epoxidation of Light Small-Molecule Olefins
title_fullStr Research Progress in Epoxidation of Light Small-Molecule Olefins
title_full_unstemmed Research Progress in Epoxidation of Light Small-Molecule Olefins
title_short Research Progress in Epoxidation of Light Small-Molecule Olefins
title_sort research progress in epoxidation of light small molecule olefins
topic light olefins
small molecules
epoxidation
catalysis mechanism
research progress
url https://www.mdpi.com/1420-3049/30/6/1340
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