6533b7dbfe1ef96bd127085c

RESEARCH PRODUCT

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

Ulla LassiUlla LassiRiikka KupilaHenrik RomarTao HuKatja LappalainenKatja Lappalainen

subject

inorganic chemicalsChemistryProcess Chemistry and TechnologyOxidefood and beverageschemistry.chemical_elementcomplex mixturesCatalysisLactic acidCatalysischemistry.chemical_compoundHydrolysisLeaching (chemistry)Nitric acidmedicineCarbonNuclear chemistryActivated carbonmedicine.drug

description

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 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.

yearjournalcountryeditionlanguage
2021-02-01Applied Catalysis A: General
https://doi.org/10.1016/j.apcata.2021.118011