Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds over Bifunctional Catalyst Comprising H4PMo11VO40 Coupled with Ni/C

Yin, T and Luo, Y and Singh Chauhan, A and Shu, R and Tian, Z and Wang, C and Chen, Y and Kumar Gupta, N (2024) Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds over Bifunctional Catalyst Comprising H4PMo11VO40 Coupled with Ni/C. In: ChemPhysChem, 25 (21).

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Abstract

In the catalytic transformation of bio-oil into liquid fuels having alkanes via hydrodeoxygenation (HDO), the acid and metal sites in the catalyst are pivotal for promoting the HDO of lignin-derived phenolic compounds. This study introduces a novel bifunctional catalyst comprising phosphomolybdenum-vanadium heteropolyacids (H4PMo11VO40) coupled with Ni/C. The HDO reaction of the model compound guaiacol was carried out under reaction conditions of 230 °C, revealing the superior performance of H4PMo11VO40 with Ni/C catalysts compared to the conventional acids, even at low dosage. The Keggin structure of H4PMo11VO40 provided a solid catalyst with strong acidic and redox properties, alongside advantages such as ease of synthesis, cost-effectiveness, and tunable acid and redox properties at the molecular level. Characterization of Ni/C and the prepared acid demonstrated favorable pore structure with a mesopore volume of 0.281 cm3/g and an average pore size of 3.404 nm, facilitating uniform distribution and catalytic activity of Ni-metal. Incorporating acid enhances the acidic sites, fostering synergistic interactions between metal and acidic sites within the catalyst, thereby significantly enhancing HDO performance. Guaiacol conversion at 230 °C reached 100 , with a cyclohexane selectivity of 89.3 . This study offers a promising avenue for the conversion and upgrading of lignin-derived phenolic compounds. © 2024 Wiley-VCH GmbH.

Item Type:	Journal Article
Publication:	ChemPhysChem
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to the publishers.
Keywords:	Bioconversion; Lithium compounds; Nickel compounds; Redox reactions, Acidic sites; Bifunctional catalysts; Biomass conversion; Heteropolyacids; Hydrodeoxygenation; Metal sites; Performance; Phenolic compounds; Redox property; ]+ catalyst, Biofuels, Acids; Conversion; Lithium Compounds; Metals; Nickel Compounds; Performance; Redox Reactions; Sites
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	04 Dec 2024 17:07
Last Modified:	04 Dec 2024 17:07
URI:	http://eprints.iisc.ac.in/id/eprint/86893

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