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Sökning: L773:1864 5631 OR L773:1864 564X > Sveriges Lantbruksuniversitet

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1.
  • Lofstedt, Joakim, et al. (författare)
  • Green Diesel from Kraft Lignin in Three Steps
  • 2016
  • Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 9:12, s. 1392-1396
  • Tidskriftsartikel (refereegranskat)abstract
    • Precipitated kraft lignin from black liquor was converted into green diesel in three steps. A mild Ni-catalyzed transfer hydrogenation/hydrogenolysis using 2-propanol generated a lignin residue in which the ethers, carbonyls, and olefins were reduced. An organocatalyzed esterification of the lignin residue with an insitu prepared tall oil fatty acid anhydride gave an esterified lignin residue that was soluble in light gas oil. The esterified lignin residue was coprocessed with light gas oil in a continous hydrotreater to produce a green diesel. This approach will enable the development of new techniques to process commercial lignin in existing oil refinery infrastructures to standardized transportation fuels in the future.
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2.
  • Mäkelä, Mikko, et al. (författare)
  • Hyperspectral Imaging to Determine the Properties and Homogeneity of Renewable Carbon Materials
  • 2017
  • Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 10, s. 2751-2757
  • Tidskriftsartikel (refereegranskat)abstract
    • Hyperspectral imaging within the near infrared (NIR) region offers a fast and reliable way for determining the properties of renewable carbon materials. The chemical information provided by a spectrum combined with the spatial information of an image allows mathematical operations that can be performed in both the spectral and spatial domains. Here, we show that hyperspectral NIR imaging can be successfully used to determine the properties of hydrothermally prepared carbon on the material and pixel levels. Materials produced from different feedstocks or prepared under different temperatures can also be distinguished, and their homogeneity can be evaluated. As hyperspectral imaging within the NIR region is non-destructive and requires very little sample preparation, it can be used for controlling the quality of renewable carbon materials destined for a wide range of different applications.
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