期刊
CATALYSTS
卷 12, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/catal12080897
关键词
glycerol; carboxylation; oxidation; etherification; hydrogenolysis; esterification; dehydration; heterogeneous catalyst
资金
- Canada Research Chair (CRC) Program
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Agriculture Development Funds [20190145]
The utilization of biofuels from renewable sources is becoming increasingly important due to their advantages in reducing fossil fuel consumption and preventing global warming. This review focuses on the conversion of glycerol, a by-product of biodiesel production, into valuable products through various catalytic pathways. The knowledge of catalysts, reaction pathways, and operating parameters are crucial for achieving higher glycerol conversion and desired product selectivity.
Utilization of biofuels generated from renewable sources has attracted broad attention due to their benefits such as reducing consumption of fossil fuels, sustainability, and consequently prevention of global warming. The production of biodiesel causes a huge amount of by-product, crude glycerol, to accumulate. Glycerol, because of its unique structure having three hydroxyl groups, can be converted to a variety of industrially valuable products. In recent decades, increasing studies have been carried out on different catalytic pathways to selectively produce a wide range of glycerol derivatives. In the current review, the main routes including carboxylation, oxidation, etherification, hydrogenolysis, esterification, and dehydration to convert glycerol to value-added products are investigated. In order to achieve more glycerol conversion and higher desired product selectivity, acquisition of knowledge on the catalysts, the type of acidic or basic, the supports, and studying various reaction pathways and operating parameters are necessary. This review attempts to summarize the knowledge of catalytic reactions and mechanisms leading to value-added derivatives of glycerol. Additionally, the application of main products from glycerol are discussed. In addition, an overview on the market of glycerol, its properties, applications, and prospects is presented.
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