期刊
ACS CATALYSIS
卷 9, 期 1, 页码 259-268出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b03402
关键词
Co-doped MoS2; nanosulfide; Co-Mo-S phase; phenols; hydrodeoxygenation
资金
- National Natural Science Foundation of China [21703179, 21878237, U1463210, 11474147, 11874199]
- Fundamental Research Funds for the Central Universities of China [20720170103]
- National Basic Research Program of China [2015CB654901]
- Wuhan Institute of Technology
- Yangzhou University
- [33750000-16-ZC0607-0001]
We propose a surface atom engineering strategy to obtain a well-dispersed Co-incorporated MoS2 nanomaterial, which maximizes the Co-Mo-S phase and achieves high activity in hydrodeoxygenation (HDO) of lignin-derived phenolic compounds. It was shown by X-ray diffraction, transmission electron microscopy, Ramanspectroscopy, high-sensitivity low-energy ion scattering, and X-ray photoelectron spectroscopy that plenty of accessible Co-Mo-S phase were generated on the catalyst surface, which could accelerate the hydrodeoxygenation (HDO) reaction. Notably, most of the Co-Mo-S phases were located at the top surface of MoS2, which explained the full deoxygenation performance of the CoMoS catalyst. Moreover, among the diverse lignin-derived oxygenated compounds, phenolic hydroxyl HDO was structure-sensitive relative to diphenyl ether over Co-doped MoS2 catalysts. Effective conversion of mixed phenols to corresponding arenes such as BTX (benzene, toluene, and xylene) with high yield (>85%) and stable recyclability was exhibited by using the CoMoS catalyst with highly dispersed Co-Mo-S phase.
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