Journal
ENERGY & FUELS
Volume 33, Issue 9, Pages 8302-8311Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.9b01832
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Funding
- National Natural Science Foundation of China [21722604, 21576122]
- China Postdoctoral Science Foundation [2019M651743]
- Postgraduate Research & Practice Innovation Program of 550Jiangsu Province [SJKY19_2575]
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University [20150376]
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Efficient metal-free carbon-based catalysts are of particular interest due to their unique electronic structure and compositional variability. Herein, petroleum-coke-based N,O-doped porous graphene (PG) was prepared as a preferred alternative to metal catalysts for catalytic oxidative reaction. Such a high specific surface area and heteroatom-rich structure promote high exposure of active sites, regulating the electron delocalization of materials effectively. In addition, the synergistic effect between N-doped and oxygen-containing functional groups is beneficial for the catalytic performance. As such, when employing the active PG as catalyst for the catalytic oxidative desulfurization (ODS), aromatic sulfur-containing compounds would be oxidized effectively and the sulfur removal in real diesel reached 84%. This work develops a facile approach for preparing heteroatoms co-doped porous graphene for aerobic catalytic ODS as well as an effective design idea for high value-added utilization of petroleum coke.
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