Semi-Batch Hydrotreatment of Lignin-Derived Phenolic Compounds over Raney-Ni with a Continuous Regeneration of the H-Donor Solvent

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43922258" target="_blank" >RIV/60461373:22320/21:43922258 - isvavai.cz</a>

Result on the web

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.202102099" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.202102099</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cssc.202102099" target="_blank" >10.1002/cssc.202102099</a>

Result language

angličtina

Original language name

Semi-Batch Hydrotreatment of Lignin-Derived Phenolic Compounds over Raney-Ni with a Continuous Regeneration of the H-Donor Solvent

Original language description

Lignin can be converted into useful precursors of fuels and fine chemicals by thermochemical conversion followed by catalytic hydrogenation using metal catalysts at severe reaction conditions. Thus, mild hydrogenation would significantly improve the sustainability of lignin valorization. Here, hydrogenation of phenols, alkylphenols, and methoxyphenols was achieved at mild reaction conditions (70°C and atmospheric pressure) via H-transfer hydrogenation over Raney Ni catalyst in 2-propanol and2-butanol solvents. The transfer hydrogenation was feasible at the mild conditions, but the complexity of the reactant greatly decreased or even completely suppressed its reactivity. The position of the functional group (o-, m-, p position) had a great effect on the reactivity of phenols. Moreover, 2 butanol enhanced the conversion of phenols in comparison with 2-propanol. When comparing classic hydrogenation with H-transfer hydrogenation in presence of external H2, it was found that external H2 not only regenerated H donor solvent and ensured stable performance but also increased conversion of phenols and alkylphenols. On the other hand, the absence of external H2 boosted the conversion of methoxyphenols. Finally, phenols extracted from a pyrolysis oil aqueous phase were hydrogenated. The conversion of phenols was greatly affected by competitive adsorption of different compounds present in the reaction mixture. External H2 promoted hydrogenation of the complex reaction mixture and prevented condensation of the reactive species in contrast to the H-transfer hydrogenation.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20704 - Energy and fuels

Project

<a href="/en/project/GC20-28086J" target="_blank" >GC20-28086J: Simultaneous deoxygenation of acids and phenols in pyrolyzed wastewater sludges</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ChemSusChem

ISSN

1864-5631

e-ISSN

—

Volume of the periodical

15

Issue of the periodical within the volume

15

Country of publishing house

DE - GERMANY

Number of pages

17

Pages from-to

1-17

UT code for WoS article

000726781900001

EID of the result in the Scopus database

2-s2.0-85120582199