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Updated: Jan 17, 2026
Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
Published on: August 17, 2019
Ru nanoparticles on HZSM-5 with strong metal-support interactions for efficient hydrodeoxygenation of lignin-derived
Jirong Long1, Yuxuan Mao1, Yiwei Long1
1School of Resources & Environment and Engineering Research Center of Watershed Carbon Neutrality of Ministry of Education, Nanchang University, Nanchang 330047, China.
Abstract:
Hydrodeoxygenation of lignin-derived phenols into high-value cycloalkanes under mild conditions is challenging. Herein, we report a RuNPs@HZSM-5 catalyst with a unique metal-support interactions that achieves 100 % guaiacol conversion and 99.7 % cyclohexane selectivity at 160 °C and 1 MPa H2. Comparative studies with single-atom and aggregated Ru catalysts reveal that well-dispersed Ru nanoparticles coupled with acid sites offer superior activity and selectivity. Kinetic analysis and in situ DRIFTS demonstrate a sequential mechanism involving rapid hydrogenation of the aromatic ring followed by rate-limiting deoxygenation steps. Characterizations and CO-DRIFTS confirm particle sizes, optimal metal-support interactions, and enhanced acidity in RuNPs@HZSM-5. Theoretical calculations further reveal favorable electronic states and lower energy barriers for deoxygenation on RuNPs@HZSM-5. The catalyst also shows broad substrate compatibility, efficiently converting various lignin-derived phenolics. This work provides valuable insights into the critical synergy between metal nanoparticles and acidic supports for efficient lignin upgrading.
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