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

Meng Xia Xu; Lavrent Khachatryan; Alexander Baev; Rubik Asatryan

doi:10.1039/c6ra11372a

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

Meng Xia Xu, Lavrent Khachatryan, Alexander Baev, Rubik Asatryan

Research output: Journal Publication › Article › peer-review

12 Citations (Scopus)

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.

Original language	English
Pages (from-to)	62399-62405
Number of pages	7
Journal	RSC Advances
Volume	6
Issue number	67
DOIs	https://doi.org/10.1039/c6ra11372a
Publication status	Published - 2016
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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10.1039/c6ra11372a

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title = "Radicals from the gas-phase pyrolysis of a lignin model compound:: P -coumaryl alcohol",

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.",

author = "Xu, {Meng Xia} and Lavrent Khachatryan and Alexander Baev and Rubik Asatryan",

note = "Publisher Copyright: {\textcopyright} 2016 The Royal Society of Chemistry.",

year = "2016",

doi = "10.1039/c6ra11372a",

language = "English",

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journal = "RSC Advances",

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T1 - Radicals from the gas-phase pyrolysis of a lignin model compound:: P -coumaryl alcohol

AU - Xu, Meng Xia

AU - Khachatryan, Lavrent

AU - Baev, Alexander

AU - Asatryan, Rubik

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

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U2 - 10.1039/c6ra11372a

DO - 10.1039/c6ra11372a

M3 - Article

AN - SCOPUS:84977585981

SN - 2046-2069

VL - 6

SP - 62399

EP - 62405

JO - RSC Advances

JF - RSC Advances

IS - 67

ER -

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

Abstract

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