生物炼制的进展:甘油氢解制1,3-丙二醇

Reactions Pub Date : 2022-09-19 DOI:10.3390/reactions3030032
M. Gatti, N. Nichio, F. Pompeo
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引用次数: 4

摘要

人类对不可再生资源的日益依赖以及由此产生的环境影响促使人们寻找替代品,以取代从石油衍生物中获得的化学品和能源。在生物燃料中,生物柴油已经在全球范围内取得了相当大的增长,从2010年的2000万吨/年增长到2022年的4700万吨/年,这增加了甘油的供应,甘油是生物柴油合成的副产品,可以很容易地用作可再生、清洁、低成本的原料,用于制造化学工业的产品。甘油的氢解可生成二醇、1,2-丙二醇(1,2- pg)和1,3-丙二醇(1,3- pg)。特别是1,3- pg具有最高的附加值,具有多种用途,包括在聚合物工业中用作添加剂,制造化妆品,清洁产品,冷却液等。本文综述了甘油氢解制备1,3- pg的研究进展,介绍了液体相和气相反应的主要机理和所用催化剂。讨论了工程方面和操作变量对实现最大产量的影响。最后,对催化体系的稳定性和主要失活机理进行了研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Advances for Biorefineries: Glycerol Hydrogenolysis to 1,3-Propylene Glycol
Humanity’s growing dependence on non-renewable resources and the ensuing environmental impact thus generated have spurred the search for alternatives to replace chemicals and energy obtained from petroleum derivatives. Within the group of biofuels, biodiesel has managed to expand worldwide at considerable levels, going from 20 million tn/year in 2010 to 47 million tn/year in 2022, boosting the supply of glycerol, a by-product of its synthesis that can be easily used as a renewable, clean, low-cost raw material for the manufacture of products for the chemical industry. The hydrogenolysis of glycerol leads to the production of glycols, 1,2-propylene glycol (1,2-PG) and 1,3-propylene glycol (1,3-PG). In particular, 1,3-PG has the highest added value and has multiple uses including its application as an additive in the polymer industry, the manufacture of cosmetics, cleaning products, cooling liquids, etc. This review focuses on the study of the hydrogenolysis of glycerol for the production of 1,3-PG, presenting the main reaction mechanisms and the catalysts employed, both in liquid and vapor phase. Engineering aspects and the effect of the operating variables to achieve maximum yields are discussed. Finally, studies related to the stability and the main deactivation mechanisms of catalytic systems are presented.
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CiteScore
2.70
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