Department of Environmental and Safety Engineering, Ajou University, Suwon 16499, Korea.
School of Semiconductor and Chemical Engineering & School of Chemical Engineering, Jeonbuk National University, Jeonju 54896, Korea.
Int J Environ Res Public Health. 2021 Nov 9;18(22):11749. doi: 10.3390/ijerph182211749.
Fluctuating crude oil price and global environmental problems such as global warming and climate change lead to growing demand for the production of renewable chemicals as petrochemical substitutes. Butanol is a nonpolar alcohol that is used in a large variety of consumer products and as an important industrial intermediate. Thus, the production of butanol from renewable resources (e.g., biomass and organic waste) has gained a great deal of attention from researchers. Although typical renewable butanol is produced via a fermentative route (i.e., acetone-butanol-ethanol (ABE) fermentation of biomass-derived sugars), the fermentative butanol production has disadvantages such as a low yield of butanol and the formation of byproducts, such as acetone and ethanol. To avoid the drawbacks, the production of renewable butanol via non-fermentative catalytic routes has been recently proposed. This review is aimed at providing an overview on three different emerging and promising catalytic routes from biomass/organic waste-derived chemicals to butanol. The first route involves the conversion of ethanol into butanol over metal and oxide catalysts. Volatile fatty acid can be a raw chemical for the production of butanol using porous materials and metal catalysts. In addition, biomass-derived syngas can be transformed to butanol on non-noble metal catalysts promoted by alkali metals. The prospect of catalytic renewable butanol production is also discussed.
波动的原油价格和全球变暖与气候变化等全球环境问题导致人们越来越希望用可再生化学品替代石化产品来生产。丁醇是一种非极性醇，广泛应用于各种消费产品中，也是一种重要的工业中间体。因此，人们对利用可再生资源（如生物质和有机废物）生产丁醇产生了浓厚的兴趣。尽管典型的可再生丁醇是通过发酵途径（即生物质衍生糖的丙酮-丁醇-乙醇（ABE）发酵）生产的，但发酵法生产丁醇存在丁醇产率低和副产物（如丙酮和乙醇）形成等缺点。为了避免这些缺点，最近提出了通过非发酵性催化途径生产可再生丁醇的方法。本综述旨在概述三种从生物质/有机废物衍生化学品到丁醇的新兴且有前途的催化途径。第一条途径涉及在金属和氧化物催化剂上将乙醇转化为丁醇。挥发性脂肪酸可以作为多孔材料和金属催化剂生产丁醇的原料。此外，在碱金属促进下，非贵金属催化剂可以将生物质衍生的合成气转化为丁醇。本文还讨论了催化可再生丁醇生产的前景。
