Evaluation of anisole hydrodeoxygenation reaction pathways over a Ni/Al2O3 catalyst

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F24%3A10255231" target="_blank" >RIV/61989100:27710/24:10255231 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22320/24:43928935
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0021951724002665?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0021951724002665?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcat.2024.115553" target="_blank" >10.1016/j.jcat.2024.115553</a>

Result language
angličtina
Original language name
Evaluation of anisole hydrodeoxygenation reaction pathways over a Ni/Al2O3 catalyst
Original language description
Anisole is a model molecule for studying hydrodeoxygenation (HDO) of lignin-derived oxygenates. Here we elucidate its HDO pathway over 10 % Ni/Al2O3 catalyst. Adsorption experiments showed that anisole is adsorbed on the acidic sites of the Al2O3. Anisole adsorption at 200-300 oC is reactive in nature, and results in its demethylation. The catalyst was tested at 100-300 oC, 5-40 bar H2 pressure. Conversion of 78 % was obtained at 5 bar and 300 oC, restricted by hydrogenation-dehydrogenation equilibrium. HDO mainly starts through the ring-hydrogenation pathway. This is followed by demethoxylation beyond 180 oC. At 5-12 bar, cyclohexane dehydrogenates to benzene. This was confirmed by conducting an HDO experiment with methoxycyclohexane. At lower pressure deoxygenation is favored; and demethylation is accompanied with methylation of the aromatic ring, for temperature >260 oC. Investigation of the initial reaction stages showed that anisole HDO on Ni/Al2O3 catalyst proceeds via two independent pathways i.e., reactive adsorption/(de)methylation and aromatic ring hydrogenation.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20402 - Chemical process engineering

Project
<a href="/en/project/GA22-12925S" target="_blank" >GA22-12925S: Investigation of the key factors affecting hydrogenation/deoxygenation of mixtures of oxygenates</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)