Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds over Bifunctional Catalyst Comprising H 4 PMo 11 VO 40 Coupled with Ni/C.

Autor:	Yin T; Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, PR China., Luo Y; Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, PR China., Singh Chauhan A; Centre for Sustainable Technologies, Indian Institute of Science, Gulmohar Marg, Mathikere, 560012, Bengaluru, India., Shu R; Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, PR China., Tian Z; Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, PR China., Wang C; Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, PR China., Chen Y; Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, PR China., Kumar Gupta N; Centre for Sustainable Technologies, Indian Institute of Science, Gulmohar Marg, Mathikere, 560012, Bengaluru, India.
Jazyk:	angličtina
Zdroj:	Chemphyschem : a European journal of chemical physics and physical chemistry [Chemphyschem] 2024 Nov 04; Vol. 25 (21), pp. e202400505. Date of Electronic Publication: 2024 Sep 09.
DOI:	10.1002/cphc.202400505
Abstrakt:	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 (H 4 PMo 11 VO 40 ) 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 H 4 PMo 11 VO 40 with Ni/C catalysts compared to the conventional acids, even at low dosage. The Keggin structure of H 4 PMo 11 VO 40 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 cm 3 /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.)
Databáze:	MEDLINE
Externí odkaz:	Plný text