Publication

Phenolic acetals from lignins of varying compositions via iron(III) triflate catalysed depolymerisation

Deuss, P. J., Lancefield, C. S., Narani, A., De Vries, J. G., Westwood, N. J. & Barta, K., 21-Jun-2017, In : Green Chemistry. 19, 12, p. 2774-2782 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

Copy link to clipboard

Documents

  • Deuss_Barta_GreenChem_15022017_green

    Final author's version, 1 MB, PDF document

  • Phenolic acetals from lignins of varying compositions via iron( III ) tri fl ate catalysed depolymerisation

    Final publisher's version, 3 MB, PDF document

    Request copy

DOI

  • Peter J. Deuss
  • Christopher S. Lancefield
  • Anand Narani
  • Johannes G. De Vries
  • Nicholas J. Westwood
  • Katalin Barta

Lignin is a highly abundant, renewable aromatic polymer that can potentially be obtained in large quantities from lignocellulosic biorefineries. Thus the valorisation of this renewable resource by the production of aromatic chemicals would be highly desirable and is especially important for achieving high yields of these products. In this regard, not only the catalytic method used should be highly selective, but also we must better understand the possible correlations between the structure of the lignin used and the yield of useful products. Here, we demonstrate that lignins obtained from a range of different biomass sources and pretreatment methods can be successfully depolymerized using iron(III) triflate in the presence of ethylene glycol to give p-(1,3-dioxolan-2-yl)methyl substituted phenols. 27 lignins, obtained from 13 different pretreatment methods, were examined in this study. A combined yield of up to 35.5 wt% of acetal products was obtained from a beta-aryl ether rich organosolv lignin and the best yield of a single component (16.5 wt%) was achieved starting from pine lignin. Much lower yields were obtained from technical lignins which were low in beta-aryl ether content, whilst a range of organosolv lignins of intermediate beta-aryl ether content gave intermediate yields of acetal products. Overall, correlations were found between the product distributions and yields and structural data of the parent lignins obtained from 2D HSQC NMR analysis.

Original languageEnglish
Pages (from-to)2774-2782
Number of pages9
JournalGreen Chemistry
Volume19
Issue number12
Early online date20-Mar-2017
Publication statusPublished - 21-Jun-2017

    Keywords

  • BETA-O-4 BOND-CLEAVAGE, SELECTIVE OXIDATION, BIOMASS, CHEMICALS, FRACTIONATION, VALORIZATION, CONVERSION, AROMATICS, LIGNOCELLULOSE, COMPLEXES

Download statistics

No data available

ID: 42582793