Mechanical exfoliation of boron carbide: A metal-free catalyst for aerobic oxidative desulfurization in fuel.

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ID: 93291
2020
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Abstract
Metal-free catalysts have been proved to be a low-cost and environmentally friendly species in aerobic oxidative desulfurization (ODS). In this work, exfoliated metal-free boron carbide with few-layered structure, small size, and abundant defects, was first employed in an aerobic ODS system for ultra-deep desulfurization. The exfoliation process was realized by employing a planetary ball mill strategy. Detailed characterizations showed that the ball milling process not only induces thinner layers and small sizes but also introduces numerous defects into the boron carbide catalysts, which is vital in metal-free catalysis. Furthermore, the exfoliated boron carbide catalyst was applied in aerobic ODS system, and 99.5 % of sulfur removal was obtained. Moreover, the catalyst can be recycled 17 times without a significant decrease in catalytic activity. In particular, it was found that ∼90 % of the sulfur compounds in real diesel oil could be removed by the current aerobic ODS system.
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wu2020mechanicaljournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wu, Peiwen;Jia, Qingdong;He, Jing;Lu, Linjie;Chen, Linlin;Zhu, Jie;Peng, Chong;He, Minqiang;Xiong, Jun;Zhu, Wenshuai;Li, Huaming;
Journal Journal of hazardous materials
Year 2020
DOI
S0304-3894(20)30171-0
URL
Keywords
mechanism boron carbide exfoliation fuels ultra-deep desulfurization

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