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Proxies for land plant biomass: closed system pyrolysis of some methoxyphenols

Lookup NU author(s): Dr Christopher Vane, Dr Geoffrey AbbottORCiD

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Abstract

Methoxyphenols can be used as proxies for terrestrial biomass when investigating the chemical changes in lignin during hydrothermal alteration. The closed system microscale pyrolysis of 2-methoxyphenol (2-MOP) and 2,6-dimethoxyphenol (2,6-DMP), in the presence of water vapour, has been studied in borosilicate glass vessels. 2-MOP was heated isothermally at temperatures of 330 degrees C for 96 h and 2,6-DMP was heated isothermally at 300 degrees C for 118 h. Pyrolysis of the model compound 2-MOP gave a simple product distribution which was composed mainly of 1,2-dihydroxybenzene with lower amounts of 2-methylphenol and phenol. The prominent reaction products from heating 2,6-DMP were 1,2-dihydroxy-6-methoxybenzene and 2-methoxy-6-methylphenol, with minor amounts of 2-MOP, 1,2-dihydroxybenzene and 2-methylphenol. The decreasing amounts of 2,6-DMP with heating time and the concomitant increase in the amounts of 1,2-dihydroxy-6-methoxybenzene suggested that demethylation had occurred. (C) 1999 Elsevier Science Ltd. All rights reserved.


Publication metadata

Author(s): Vane CH, Abbott GD

Publication type: Article

Publication status: Published

Journal: Organic Geochemistry

Year: 1999

Volume: 30

Issue: 12

Pages: 1535-1541

Print publication date: 03/12/1999

ISSN (print): 0146-6380

ISSN (electronic): 1873-5290

URL: http://dx.doi.org/10.1016/S0146-6380(99)00125-4

DOI: 10.1016/S0146-6380(99)00125-4


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