A1 Journal article (refereed)
Production of ethyl lactate by activated carbon-supported Sn and Zn oxide catalysts utilizing lignocellulosic side streams (2021)

Kupila, R., Lappalainen, K., Hu, T., Heponiemi, A., Bergna, D., & Lassi, U. (2021). Production of ethyl lactate by activated carbon-supported Sn and Zn oxide catalysts utilizing lignocellulosic side streams. Applied Catalysis A: General, 624, Article 118327. https://doi.org/10.1016/j.apcata.2021.118327

JYU authors or editors

Publication details

All authors or editorsKupila, Riikka; Lappalainen, Katja; Hu, Tao; Heponiemi, Anne; Bergna, Davide; Lassi, Ulla

Journal or seriesApplied Catalysis A: General



Publication year2021


Article number118327


Publication countryNetherlands

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/77491


In this study, activated carbon-supported Sn and Zn oxide catalysts were prepared from hydrolysis lignin and used for the conversion of model solutions of trioses, hexoses, and lignocellulosic biomass hydrolysates to ethyl lactate. Both catalysts, SnO2@AC and ZnO@AC, were able to produce ethyl lactate in high yields. SnO2@AC was a more active and selective catalyst in triose (dihydroxyacetone) conversion, providing 99% yield to ethyl lactate. ZnO@AC, by contrast, was more selective in glucose and hydrolysate conversion, with a yield of 60% and 85%, respectively. The ethyl lactate yields were significantly higher than those from the optimized model solution experiments when using ZnO@AC catalyst. These findings indicate that milder acidity of the ZnO@AC catalyst together with Na+ and SO42- in hydrolysate favored ethyl lactate production, preventing byproduct, furan derivatives and acetal, formation. Moreover, the catalysts were able to maintain their catalytic activity in recycling experiments.

Keywordschemical technologylactatescatalysiscatalystsactivated carbonbiomass (industry)oxideszinc oxide

Free keywordsactivated carbon; heterogeneous catalyst; metal oxide; ethyl lactate; lignocellulosic biomass

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Ministry reportingYes

Reporting Year2021

JUFO rating2

Last updated on 2024-22-04 at 14:42