The bifunctional active sites on carbon supported Fe-Mo bimetallic catalyst to improve Kraft lignin liquefaction

Chang Li, Yishuang Wang, Zhiyuan Tang, Zinan Zhou, Baolong Qin and Mingqiang Chen

Renewable Energy, 2023, vol. 219, issue P2

Abstract: Carbon-supported Fe-Mo bimetallic catalysts were synthesized for the thermal catalytic ethanolysis of lignin to liquid fuels composed of aromatic monomers. A yield of 40.7 wt % of lignin oil, consisting of 38.8 wt % phenol monomers and 39.3 wt % benzeneacetaldehyde monomers, was obtained in the presence of Fe-Mo-P catalysts (1:0.5) at 290 °C for 4 h in the supercritical ethanol solvent (6.5 MPa). The catalysts exhibited a rich distribution of α-MoC nanoparticles, Fe0 nanoclusters, surface oxygen defects, and active species of Mo6+ and phosphoric acid on the graphitized microporous carbon substrate. The synergistic effects of these active components were crucial for enhancing lignin liquefaction efficiency. The ethanolysis of the lignin model compound revealed that the Fe-Mo bimetallic catalyst can facilitate double cracking of C-C/C-O bonds under supercritical ethanol conditions. In situ Raman and FT-IR characterization were performed to monitor the transformation of the Fe-Mo bimetallic catalyst from the precursor to the carbon material, including the dehydration and carbonization of the organic precursor.

Keywords: Lignin liquefaction; Bimetallic catalysts; Ensemble effect; Aromatic monomers; In situ Raman/IR spectra (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148123014180
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:219:y:2023:i:p2:s0960148123014180

DOI: 10.1016/j.renene.2023.119503

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().