2015
DOI: 10.1016/j.jaap.2015.07.009
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Pyrolysis mechanism of β O 4 type lignin model dimer

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Cited by 65 publications
(28 citation statements)
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“…4), with values of 62-68 kcal mol l − 1 and 56-58 kcal mol − 1 , respectively. A similar range of values have been reported by other researchers [73][74][75]. The Nimlos's research group [72] reported the formation of degradation products from the gas-phase pyrolysis of phenethyl phenyl ether and they concluded that the C−O homolysis occurred at high temperatures (>1000 °C), whereas the concerted retro-ene and Maccoll mechanisms were significant at lower temperatures (<600 °C).…”
Section: Ether Cleavage Mechanismssupporting
confidence: 80%
See 1 more Smart Citation
“…4), with values of 62-68 kcal mol l − 1 and 56-58 kcal mol − 1 , respectively. A similar range of values have been reported by other researchers [73][74][75]. The Nimlos's research group [72] reported the formation of degradation products from the gas-phase pyrolysis of phenethyl phenyl ether and they concluded that the C−O homolysis occurred at high temperatures (>1000 °C), whereas the concerted retro-ene and Maccoll mechanisms were significant at lower temperatures (<600 °C).…”
Section: Ether Cleavage Mechanismssupporting
confidence: 80%
“…Several concerted (heterolytic) mechanisms have been proposed for β-ether bond cleavage [42,[72][73][74][75][76]. Klein and Virk [42] proposed a six membered retro-ene mechanism based on an analysis of the kinetics for the formation of styrene and phenol from phenethyl phenyl ether.…”
Section: Ether Cleavage Mechanismsmentioning
confidence: 99%
“…Analysis of the pyrolytic products showed that these substances were mainly generated through the pyrolysis of guaiacol, 2-methoxybenzaldehyde. This result implied that the Cβ-O concerted decomposition reaction took place in the thermal degradation of compound (1) under medium pyrolysis temperatures, which agrees well with Chen et al (2015), who confirmed that Cβ-O homolysis and Cβ-O concerted decomposition occur at moderate temperatures. As the relative content of these products from the concerted decomposition of Cβ-O is low, Cβ-O homolysis is still prominent at medium temperature.…”
Section: Py-gc/ms Analysissupporting
confidence: 87%
“…According to analysis of the pyrolysis products of guaiacyl glycerol-β-guaiacyl ether (1), guaiacol (2) and 2-methoxybenzaldehyde (3) as shown in Figs. 4, 5 and 6, the products formed from Cβ-O homolysis and Cβ-O concerted decomposition undergo dissociation reactions, producing small molecule products (Chen et al 2015). For example catechol, 2-methyl-phenol, and 2-hydroxy-benzaldehyde are mainly produced from guaiacol, whereas benzaldehyde is mainly produced from 2-methoxybenzaldehyde.…”
Section: Py-gc/ms Analysismentioning
confidence: 99%
“…According to previous studies, both the homolytic cleavage and the concerted decomposition may take place during the preliminary pyrolysis process of lignin (Elder and Beste 2014;Huang et al 2014;Chen et al 2015). For all β-1-type lignin dimers, the homolytic cleavage should occur on the Cα-Cβ bond because it has the lowest bond dissociation energy (BDE) value (Parthasarathi et al 2011).…”
Section: Density Functional Theory Calculations Initial Pyrolysis Mecmentioning
confidence: 99%