Guaiacol demethoxylation catalyzed by Re2O7 in ethanol
No Thumbnail Available
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2020-09-15
Major/Subject
Mcode
Degree programme
Language
en
Pages
7
Series
Catalysis Today, Volume 355, pp. 231-237
Abstract
Re2O7 is used to convert guaiacol in alcohols at 280–320 °C. In ethanol, guaiacol is deoxygenated and alkylated, and the major products are phenol and alkylphenols (including ethylphenol, diethylphenol, diisopropylphenol, di-tert-butylphenol and 2,6-di-tert-butyl-4-ethylphenol), accounting for 97 mol% of all products after 6 hour reaction at 320 °C. Both catechol and phenol are the intermediates of guaiacol demethoxylation. Among the substituents, ethyl is directly provided by ethanol while isopropyl and tert-butyl are formed by the addition of methyl to ethyl step by step. In addition, Re2O7 has negligible activity for the saturation of benzene ring so it does not cause considerable over-consumption of reductant. The actual catalyst for guaiacol demethoxylation is likely a ReIV−VI species.Description
Keywords
Alkylation, Demethoxylation, Ethanol, Guaiacol, ReO
Other note
Citation
Yan, F, Sang, Y, Bai, Y, Wu, K, Cui, K, Wen, Z, Mai, F, Ma, Z, Yu, L, Chen, H & Li, Y 2020, ' Guaiacol demethoxylation catalyzed by Re 2 O 7 in ethanol ', Catalysis Today, vol. 355, pp. 231-237 . https://doi.org/10.1016/j.cattod.2019.07.018