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A study of the mechanisms of vanillin pyrolysis by mass spectrometry and multivariate analysis

โœ Scribed by Eun-Jae Shin; Mark R. Nimlos; Robert J. Evans

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
208 KB
Volume
80
Category
Article
ISSN
0016-2361

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โœฆ Synopsis

The pyrolysis of vanillin (3-methoxy-4-hydroxy-benzaldehyde) was studied to determine the reaction pathways that lead to the formation of aromatics and to establish an empirical kinetic model. Molecular beam mass spectrometry and multivariate data analysis were used to follow the complicated pyrolysis chemistry and to determine quantitative kinetic parameters of aromatic hydrocarbon formation. The pyrolysis of vanillin is modeled as a lumped, two-step, sequential process. Possible identiยฎcation of reaction intermediates is discussed utilizing known reaction mechanisms and thermochemistry for anisole (C 6 H 5 OCH 3 ), phenol (C 6 H 5 OH), and benzaldehyde (C 6 H 5 CHO).

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