科研之友
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摘要
As one of the most important renewable chemicals, aromatic compounds are closely related to human production and life. Increasing concerns about diminishing oil resources and the relevant environmental pollution have gradually motivated interests in exploring new green chemistry routes towards aromatic hydrocarbons synthesis. Prized for the low cost and molecular diversity, biomass-derived furans arise as vital candidate raw materials for the production of aromatic compounds in the new century. Through Diels-Alder cycloaddition and the subsequent dehydration, furans could react with enophiles (such as ethylene and propylene) to obtain value-added aromatics including para-xylene. To our knowledge there exist broad industrial application prospects and economic benefits, and the catalytic reation of biomass-derived furans can effectively utilize renewable, abundant, sustainable energy. However, most of the reported catalytic conversion requires elevated temperature and high pressure, and the one-pot method usually results in multifarious and unrestricted side effects, such as hydrolysis, alkylation, isomerization and oligomerization. In this review, we summarize recent developments in the research achievements and issues of aromatic synthesis based on different biomass-derived furan molecules. The mechanism of Diels-Alder cycloaddition reaction is briefly introduced, followed by its influencing factors: catalyst composition, solvent effect and enophile. Then, perspectives and challenges for biomass-based aromatic synthesis are discussed.
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单位高性能陶瓷和超微结构国家重点实验室; 中国科学院大学
