Efficiency of acetic acid and formic acid as a catalyst in catalytical and mechanocatalytical pretreatment of barley straw
Schneider, L., Dong, Y., Haverinen, J., Jaakkola, M., & Lassi, U. (2016). Efficiency of acetic acid and formic acid as a catalyst in catalytical and mechanocatalytical pretreatment of barley straw. Biomass and Bioenergy, 91, 134-142. https://doi.org/10.1016/j.biombioe.2016.05.015
Published inBiomass and Bioenergy
© 2016 Elsevier Ltd. This is a final draft version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
In this study, the potential of organic acids (formic acid, acetic acid) in a catalytical and mechanocatalytic conversion of lignocellulosic barley straw to valuable sugars is explored using sulfuric acid as a reference. Acid-catalyzed hydrolysis has been carried out with acid-impregnated samples as well as unmodified barley straw. In the mechanocatalytical approach, pretreatment consists of impregnation with the acid catalyst and mechanical treatment by ball milling following chemical hydrolysis. Straw samples and residues were analyzed by Fourier transform infrared spectrometry (FT-IR) whereas hydrolysate analysis was based on total reducing sugar (TRS) determination following the DNS method and capillary electrophoresis (CE) analysis. The results indicated that acetic acid and formic acid are rather mild acids yielding low TRS levels compared to the reference acid. Mechanocatalytical pretreatment slightly increased TRS yields, but not significantly. Strikingly, sulfuric acid showed an efficient conversion efficiency yielding almost 45% of TRS. Furthermore, this study provided evidence for the acetylation of straw components when acetic acid was used as catalyst. Alkali hydrolysis induced the de-esterification, but revealed no significant increase of TRS yields. ...
Publication in research information system
MetadataShow full item record
Showing items with similar title or keywords.
Catalytic conversion of glucose to 5-hydroxymethylfurfural over biomass-based activated carbon catalyst Rusanen, Annu; Lahti, Riikka; Lappalainen, Katja; Kärkkäinen, Johanna; Hu, Tao; Romar, Henrik; Lassi, Ulla (Elsevier BV, 2020)Selective and efficient dehydration of glucose to 5-hydroxymethylfurfural (HMF) has been widely explored research problem recently, especially from the perspective of more sustainable heterogeneous catalysts. In this study, ...
Biomass-based composite catalysts for catalytic wet peroxide oxidation of bisphenol A : preparation and characterization studies Juhola, Riikka; Heponiemi, Anne; Tuomikoski, Sari; Hu, Tao; Prokkola, Hanna; Romar, Henrik; Lassi, Ulla (Elsevier BV, 2019)The wet granulation process was used to prepare new, efficient, and cost-effective granular biomass-based composite catalysts for catalytic wet peroxide oxidation (CWPO) of bisphenol A (BPA). The most stable composite ...
Effect of lithium ions on the catalytic efficiency of calcium oxide as a nanocatalyst for the transesterification of lard oil Ambat, Indu; Srivastava, Varsha; Haapaniemi, Esa; Sillanpää, Mika (Royal Society of Chemistry, 2019)The present work encompasses the effect of Li+ ions on CaO nanoparticles for the transesterification of lard oil. The modification of CaO nanoparticles was achieved by the impregnation of different molar ratios of lithium ...
Rusanen, Annu; Kupila, Riikka; Lappalainen, Katja; Kärkkäinen, Johanna; Hu, Tao; Lassi, Ulla (MDPI, 2020)In this study, conversion of xylose to furfural was studied using lignin-based activated carbon-supported iron catalysts. First, three activated carbon supports were prepared from hydrolysis lignin with different activation ...
Efficient Conversion of Light to Chemical Energy : Directional, Chiral Photoswitches with Very High Quantum Yields Herges, Rainer; Moorman, Widukind; Tellkamp, Tobias; Stadler, Eduard; Röhricht, Fynn; Naether, Christian; Puttreddy, Rakesh; Rissanen, Kari; Gescheidt, Georg (Wiley-VCH Verlag, 2020)Photochromic systems have been used to achieve a number of engineering functions such as light energy conversion, molecular motors, pumps, actuators, and sensors. Key to p rac tical applications is a high efficiency in ...