生物质基化学品_新一代的可持续绿色溶剂.docVIP

 Bio-based chemicals: a sustainable candidate for new generation of green solvents# Gu Yanlong* 5 10 15 20 25 30 35 40 45 (School of Chemical Engineering, Huazhong University of Science and Technology, WuHan 430074) Abstract: Biomass has exhibited great potential to replace fossil resources for the production of chemicals and fuels. The search for alternative reaction media to replace petroleum-based, volatile and often toxic solvents commonly used in chemical processes is an important objective of significant environmental consequence. Recently, bio-based compounds have been either used entirely as green solvents or utilized as pivotal ingredients for constructing innovative solvents, providing a new generation of green solvents, which are inexpensive, less toxic and bio-compatible. This review presents background and classification of these new media and highlights recent advances in their use in various areas including organic synthesis, biotransformations and separations. Keywords: Applied chemistry; Green solvent; bio-based solvent; bio-based chemicals; sustainable medium 0 Introduction For several years, the manufacturing of raw materials resulted from chemicals obtained mainly from fossil resources, which are in the process of exhaustion nowadays. Considering both the environmental regulations, as well as the increase in crude oil prices, the use of renewable raw materials as alternatives to fossil resources for energy generation and as starting materials for industrial chemical processes attract great attention.[1] Indeed, nature produces 170 billion tons of biomass per year by photosynthesis, 75 % of which belong to the class of carbohydrates; however, just 3–4 % of these compounds are used by humans for food and nonfood purposes.[2] The search and uses of bio-based chemicals obtained from renewable sources are therefore imperative for sustainable development. On the other hand, environmental concern associated with chemical synthesis has posed string