Journal
ACS ENERGY LETTERS
Volume 5, Issue 4, Pages 1330-1336Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.0c00411
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Funding
- National Key R&D Program of China [2019YFC1905302]
- National Natural Science Foundation of China [21776236, 21676225, 21721004, 21878288, 21690083]
- Natural Science Foundation of Hunan Province [2018JJ2384]
- Scientific Research Fund of Hunan Provincial Education Department [19A478]
- Engineering Research Centre of Chemical Process Simulation and Optimization of Ministry of Education
- Hunan Key Laboratory of Environment-Friendly Chemical Process Integrated Technology
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To enhance the catalytic activity and temper the reaction conditions in the hydrodeoxygenation (HDO) of lignin-derived phenols to arenes, a Co-MoS2-x catalyst was proposed and prepared via a facile strategy. Co oxide was synthesized via a solvothermal method, adsorbed at the edge of MoS2-x, and finally reduced to metallic Co via an in situ spontaneous interfacial redox reaction to form Co-MoS2-x. In the HDO of 4-methylphenol, a 97.4% conversion with toluene selectivity up to 99.6% is obtained at the hitherto lowest reaction temperature of 120 degrees C. This catalyst also exhibits good versatility in catalyzing HDO of different lignin monomers and even lignin bio-oil into arenes. Notably, CoMoS2-x is very stable in the HDO reusability study: no deactivation was observed after recycling eight times. The high HDO activity of CoMoS2-x is attributed to the formation of a metal-vacancy interface and electronic transfer from Co to MoS2-x according to the characterization results and theoretical analysis.
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