Hydrodeoxygenation of Propylphenols on a Niobia-Supported Platinum Catalyst : Ortho, Meta, Para Isomerism, Reaction Conditions, and Phase Equilibria
Loading...
Access rights
openAccess
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
View/Open full text file from the Research portal
Other link related to publication
View publication in the Research portal
View/Open full text file from the Research portal
Other link related to publication
Date
2020-10-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
11
Series
Advanced Sustainable Systems, Volume 4, issue 10
Abstract
The alkylphenols found in liquefied lignocellulose could become a source of bio-based aromatic hydrocarbons for fuel components. In the hydrodeoxygenation (HDO) of alkylphenols, hydroxyl groups must be removed while avoiding the hydrogenation of the aromatic ring. Here, the HDO of propylphenols is studied using a Pt/Nb2O5 catalyst and n-tetradecane solvent. HDO experiments are performed using different reaction conditions of batch residence time (0–161 min gcat greactant −1), pressure (20–30 bar H2), and temperature (300–375 °C). HDO is studied with ortho-, meta-, and para-propylphenol. The influence of vapor–liquid equilibrium and chemical equilibrium are assessed using thermodynamic calculations. Almost full deoxygenation is attained in the experiments; the main products are propylbenzene and propylcyclohexane. The study finds that, of the isomers, 4-propylphenol is the most favorable for forming propylbenzene (77% maximum selectivity), whereas 2-propylphenol is the least favorable (55% maximum selectivity). Additionally, the reactivity of propylbenzene in the test conditions is detrimental to its selectivity after 5 min gcat greactant −1. Finally, the temperature at which the process favors propylbenzene is found to shift as a function of pressure; at 20 bar, propylbenzene is favored at 350 °C and at 30 bar, it is favored at 375 °C.Description
Keywords
hydrodeoxygenation, niobia, platinum, process parameters, propylphenols
Other note
Citation
González Escobedo, J L, Mäkelä, E, Neuvonen, J, Uusi-Kyyny, P, Lindblad, M, Karinen, R & Puurunen, R L 2020, ' Hydrodeoxygenation of Propylphenols on a Niobia-Supported Platinum Catalyst : Ortho, Meta, Para Isomerism, Reaction Conditions, and Phase Equilibria ', Advanced Sustainable Systems, vol. 4, no. 10, 1900140 . https://doi.org/10.1002/adsu.201900140
