Jump to main content
Jump to site search

Issue 1, 2013
Previous Article Next Article

The pyrolysis chemistry of a β-O-4 type oligomeric lignin model compound

Author affiliations

Abstract

The pyrolysis behavior of a β-O-4 type oligomeric lignin model compound is studied at a temperature range from 250 °C to 550 °C. Thermogravimetric analysis (TGA) indicates the model compound has three distinct thermal decompositions peaks when a slow temperature ramp is applied while only one decomposition peak is observed when a higher temperature ramp is used. The pyrolysis behavior of this model compound is similar to that of lignin prepared by enzymatic hydrolysis of Maplewood. 1H-NMR shows that the β-O-4 linkage thermally decomposes at a temperature between 250 °C and 350 °C with the formation of solid products at 350 °C. This solid product undergoes transformation to a polyaromatic from 350 °C to 550 °C. Around twenty five volatile compounds are quantified by pyroprobe-GC-MS with vanillin and 2-methoxy-4-methyl phenol being the most abundant monomeric products. A free radical reaction pathway is proposed to explain the product chemistry for pyrolysis of the lignin model compound. Char is most likely formed by random repolymerization of the radicals.

Graphical abstract: The pyrolysis chemistry of a β-O-4 type oligomeric lignin model compound

Back to tab navigation

Publication details

The article was received on 22 Aug 2012, accepted on 08 Oct 2012 and first published on 22 Oct 2012


Article type: Paper
DOI: 10.1039/C2GC36332A
Citation: Green Chem., 2013,15, 125-136
  •   Request permissions

    The pyrolysis chemistry of a β-O-4 type oligomeric lignin model compound

    S. Chu, A. V. Subrahmanyam and G. W. Huber, Green Chem., 2013, 15, 125
    DOI: 10.1039/C2GC36332A

Search articles by author

Spotlight

Advertisements