首页|Oxidative desulfurization of liquid fuels catalyzed by W2C@C derived from metallophthalocyanine/phosphotungstic acid composites
Oxidative desulfurization of liquid fuels catalyzed by W2C@C derived from metallophthalocyanine/phosphotungstic acid composites
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NSTL
Elsevier
Herein, the tungsten carbide (W2C) coated with the ultrathin carbon layer (W2C@C) was firstly exploited as an efficient and stable oxidative desulfurization (ODS) catalyst, which was prepared via annealing metallophthalocyanine/phosphotungstic acid composites at 800 degrees C under N-2 atmosphere. The Zn element in precursor markedly promoted the formation of the pure-phase W2C during annealing process. W2C@C showed a remarkable ODS performance with H2O2 as oxidant under mild conditions. Dibenzothiophene (DBT) was100% removed by W2C@C within 40 min at 50 degrees C. The density functional theory (DFT) calculations combined with the radical scavenging experiments suggest that the ODS over W2C@C follows a non-radical mechanism that involves the facile formation of surface active oxygen species. Moreover, the W2C@C catalyst could be easily regenerated by solvent washing and recycled with no obvious loss of performance. Therefore, W2C could be firstly suggested as a promising catalyst for the ODS of liquid fuels.
NSTL
Elsevier
