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Issue 67, 2016, Issue in Progress
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Radicals from the gas-phase pyrolysis of a lignin model compound: p-coumaryl alcohol

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Abstract

The intermediate radicals produced in the gas-phase pyrolysis of one of the main building blocks of lignin – p-coumaryl alcohol (p-CMA) – were investigated using the low temperature matrix isolation technique interfaced with electron paramagnetic resonance spectroscopy (LTMI-EPR). An anisotropic EPR spectrum characterized by a high g-value (>2.0080) and a relatively low saturation coefficient (∼1.40) throughout the high pyrolytic temperature region (700 to 1000 °C) was observed. Theoretical calculations revealed plausible decomposition pathways for p-CMA comprising highly delocalized aromatic radicals. The results provide evidence for a dominant role of oxygen-centered radicals during the pyrolysis of p-CMA.

Graphical abstract: Radicals from the gas-phase pyrolysis of a lignin model compound: p-coumaryl alcohol

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Supplementary files

Article information


Submitted
02 May 2016
Accepted
14 Jun 2016
First published
15 Jun 2016

RSC Adv., 2016,6, 62399-62405
Article type
Paper

Radicals from the gas-phase pyrolysis of a lignin model compound: p-coumaryl alcohol

M. Xu, L. Khachatryan, A. Baev and R. Asatryan, RSC Adv., 2016, 6, 62399
DOI: 10.1039/C6RA11372A

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