Hydrodearomatization Deceleration as a Key Factor of Improved Selectivity in Transfer Hydrogenation of Phenolics over Ni-Co Bifunctional Catalysts Full article
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Molecular Catalysis
ISSN: 2468-8231 |
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| Output data | Year: 2026, Volume: 591, Article number : 115711, Pages count : 16 DOI: 10.1016/j.mcat.2026.115711 | ||
| Tags | Transfer hydrogenation; Hydrodeoxygenation; Supercritical antisolvent coprecipitation; Supercritical alcohols; Ni-Co catalysts; Phenolic compounds | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | FWUR-2024-0043 |
Abstract:
The study aims to control the selectivity towards hydrodeoxygenation (HDO) products in the transfer hydrogenation of guaiacol and anisole by decelerating aromatic ring saturation, using isopropanol as a hydrogen donor. For this purpose, bifunctional Ni-Co catalysts were synthesized using an eco-friendly method based on coprecipitation in supercritical CO2. The bifunctionality of the bimetallic catalysts was achieved through the controlled replacement of some nickel with cobalt, a metal that is known to have lower activity in the saturation of aromatic rings. The peculiarities of the synthesized samples are high content of the active compound and monophasic bimetallic particles, which facilitates interaction between Ni and Co. It was observed that the rate of aromatic ring saturation decreased as nickel was substituted for cobalt in the catalyst. Simultaneously, the rate constants of anisole and guaiacol HDO responded differently to cobalt substitution. The hydrogenolysis of the C–OMe bond in guaiacol accelerated with higher Co content. In contrast, for anisole, the elimination of the same fragment, catalyzed by bimetallic catalysts, slowed down compared to the monometallic Ni sample. Importantly, the approach of slowing hydrodearomatization proved versatile, as this effect was observed for both anisole and guaiacol with an increase in Co content. Thus, this work demonstrates the design of catalysts capable of processing real lignin pyrolysis oil, which is rich in a diverse set of oxygenated molecules.
Cite:
Nasokhov D.
, Philippov A.
, Nesterov N.
, Pakharukova V.
, Prosvirin I.
, Martyanov O.
Hydrodearomatization Deceleration as a Key Factor of Improved Selectivity in Transfer Hydrogenation of Phenolics over Ni-Co Bifunctional Catalysts
Molecular Catalysis. 2026. V.591. 115711 :1-16. DOI: 10.1016/j.mcat.2026.115711 WOS OpenAlex
Hydrodearomatization Deceleration as a Key Factor of Improved Selectivity in Transfer Hydrogenation of Phenolics over Ni-Co Bifunctional Catalysts
Molecular Catalysis. 2026. V.591. 115711 :1-16. DOI: 10.1016/j.mcat.2026.115711 WOS OpenAlex
Dates:
| Submitted: | Sep 25, 2025 |
| Accepted: | Jan 6, 2026 |
| Published online: | Jan 9, 2026 |
| Published print: | Feb 15, 2026 |
Identifiers:
| Web of science: | WOS:001664160700001 |
| OpenAlex: | W7119980623 |
Citing:
| DB | Citing |
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| OpenAlex | Нет цитирований |