University of Oulu

Riikka Kupila, Katja Lappalainen, Tao Hu, Henrik Romar, Ulla Lassi, Lignin-based activated carbon-supported metal oxide catalysts in lactic acid production from glucose, Applied Catalysis A: General, Volume 612, 2021, 118011, ISSN 0926-860X,

Lignin-based activated carbon-supported metal oxide catalysts in lactic acid production from glucose

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Author: Kupila, Riikka1; Lappalainen, Katja1,2; Hu, Tao2;
Organizations: 1Unit of Applied Chemistry, Kokkola University Consortium Chydenius, University of Jyväskylä, P.O. Box 567, FIN-67101, Kokkola, Finland
2Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 4300, FIN-90014, Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.3 MB)
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Language: English
Published: Elsevier, 2021
Publish Date: 2021-07-08


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 min 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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Series: Applied catalysis. A, General
ISSN: 0926-860X
ISSN-E: 1873-3875
ISSN-L: 0926-860X
Volume: 612
Article number: 118011
DOI: 10.1016/j.apcata.2021.118011
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
215 Chemical engineering
Funding: Authors R.K. and K.L. would like to thank the Green Bioraff Solutions Project (EU/Interreg/Botnia-Atlantica, 20201508) for funding this research.
Copyright information: © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (