A1 Journal article (refereed)
Lignin-based activated carbon-supported metal oxide catalysts in lactic acid production from glucose (2021)

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

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Publication details

All authors or editors: Kupila, Riikka; Lappalainen, Katja; Hu, Tao; Romar, Henrik; Lassi, Ulla

Journal or series: Applied Catalysis A: General

ISSN: 0926-860X

eISSN: 1873-3875

Publication year: 2021

Volume: 612

Article number: 118011

Publisher: Elsevier

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.apcata.2021.118011

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/74030

Abstract

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.

Keywords: chemical technology; chemical reactions; conversion; glucose; lactic acid; catalysis; catalysts; activated carbon; biomass (industry); oxides

Free keywords: heterogeneous catalyst; lactic acid; activated carbon; metal oxide; aqueous solution; biomass

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Ministry reporting: Yes

VIRTA submission year: 2021

JUFO rating: 2