Shumeiko, Bogdan published the artcileSemi-Batch Hydrotreatment of Lignin-Derived Phenolic Compounds over Raney-Ni with a Continuous Regeneration of the H-Donor Solvent, HPLC of Formula: 645-56-7, the publication is ChemSusChem (2022), 15(1), e202102099, database is CAplus and MEDLINE.
Lignin can be converted into useful precursors of fuels and fine chems. by thermochem. 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° and atm. pressure) via H-transfer hydrogenation over Raney-Ni catalyst in iso-PrOH and 2-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. Also, 2-butanol enhanced the conversion of phenols in comparison with iso-PrOH. When comparing classic hydrogenation with H-transfer hydrogenation in presence of external H2, external H2 not only regenerated H-donor solvent and ensured stable performance but also increased conversion of phenols and alkylphenols. However, the absence of external H2 boosted the conversion of methoxy phenols. 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.
ChemSusChem published new progress about 645-56-7. 645-56-7 belongs to alcohols-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 4-Propylphenol, and the molecular formula is C9H5F3O, HPLC of Formula: 645-56-7.
Referemce:
https://en.wikipedia.org/wiki/Alcohol,
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