Lignin-based activated carbon-supported metal oxide catalysts in lactic acid production from glucose
Kupila, R., Lappalainen, K., Hu, T., Romar, H., & Lassi, U. (2021). Lignin-based activated carbon-supported metal oxide catalysts in lactic acid production from glucose. Applied Catalysis A: General, 612, Article 118011. https://doi.org/10.1016/j.apcata.2021.118011
Published inApplied Catalysis A: General
© 2021 The Authors. Published by Elsevier B.V.
In this study, heterogeneous biomass-based activated carbon-supported metal oxide catalysts were prepared and tested for lactic acid production from glucose in aqueous solution. Activated carbons were produced from hydrolysis lignin by chemical (ZnCl2) or steam activation and modified with a nitric acid treatment and Sn, Al, and Cr chlorides to obtain carbon-based metal oxide catalysts. The modification of the carbon support by nitric acid treatment together with Sn and Al oxides led to an increase in lactic acid yield. The highest lactic acid yield (42%) was obtained after 20 minutes at 180 °C with the Sn/Al (5/2.5 wt.%) catalyst on steam-activated carbon treated by nitric acid. Reusability of the catalyst was also studied with the conclusion that the deposition of carbonaceous byproducts and leaching of Al oxides led to a decrease in catalyst selectivity to lactic acid.
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Related funder(s)European Commission
Funding program(s)Interreg, others
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingAuthors R.K. and K.L. would like to thank the Green Bioraff Solutions Project (EU/Interreg/Botnia-Atlantica, 20201508) for funding this research. Hanna Prokkola is thanked for performing the elemental analysis.
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