Journal
APPLIED SURFACE SCIENCE
Volume 579, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2021.152251
Keywords
Oxidative desulfurization; Molybdenum oxide; Large specific surface area; Hollow nanocages
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Funding
- National Natural Science Foundation of China [51890893]
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The study presents a superior oxidative desulfurization performance through the synthesis of composite CoMoO4-Co3O4 hollow nanocages, showing high catalytic activity and recycling stability, suitable for industrial applications.
The oxidative desulfurization (ODS) is a promising industrial technology of environmental protection, and developing effective catalysts for aerobic oxidation desulfurization (AODS) has attracted much attention. In this work, composite CoMoO4-Co3O4 hollow nanocages (CoMoO HNCs) are synthesized using a novel self-template strategy with ZIF-67 as the sacrificial template, and they show a superior ODS performance to eliminate the dibenzothiophene (DBT) completely at 110 degrees C in 1 h, O-2 in air as the oxidant. The outstanding ODS activity is the outcome of large specific surface area (221.3 m(2) g(-1)), high dispersed molybdenum active centers, causing more Mo to react with DBT in oil. The ODS mechanism of Mo-peroxo species based on O-2 is proposed. Additionally, CoMoO HNCs catalysts can be easily separated by centrifuged and show excellent recycled stability. This work provides a valuable method for designing cost-effective Mo-based bimetal oxides catalysts with outstanding ODS performance for industrial applications.
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