University of Oulu, Research Unit of Sustainable Chemistry, P.O. Box 3000, FIN-90014 Oulu, Finland; University of Jyvaskyla, Kokkola University Consortium Chydenius, FI-67100 Kokkola, Finland.
University of Oulu, Kajaani University Consortium, CEMIS-Oulu, FI-87400 Kajaani, Finland.
Bioresour Technol. 2017 Jun;234:1-7. doi: 10.1016/j.biortech.2017.03.020. Epub 2017 Mar 7.
The catalytic conversion of lignocellulosic biomass is attractive due to the feasible generation of valuable products such as reducing sugars which constitute the basic substrates for chemical and transportation fuel production, as well as the production of renewable hydrogen. This study shows the efficient conversion of lignocellulose, especially hemicellulose, into reducing sugars such as xylose and galactose, by mechanocatalysis using potassium pyrosulfate, KSO, as an effective salt catalyst. Ball milling was performed, introducing a mechanical force which, combined with chemical pretreatment, leads to reducing sugar yields (40%) almost as high as when commonly used sulfuric acid was employed. Kinetic experiments as well as the optimization of the saccharification process are presented.
木质纤维素生物质的催化转化具有吸引力，因为它可以生成有价值的产品，如还原糖，这些糖是化学和运输燃料生产以及可再生氢气生产的基础底物。本研究表明，通过使用焦硫酸钾（KSO）作为有效盐催化剂的机械催化作用，可以有效地将木质纤维素（特别是半纤维素）转化为还原糖，如木糖和半乳糖。通过球磨引入机械力，与化学预处理相结合，可使还原糖产率（40%）几乎与使用常用硫酸时一样高。本文还介绍了动力学实验和糖化过程的优化。
