文献类型：期刊文献

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

作者：Wu, Peiwen[1];Jia, Qingdong[1];He, Jing[1];Lu, Linjie[1];Chen, Linlin[1];Zhu, Jie[1];Peng, Chong[2];He, Minqiang[1];Xiong, Jun[1];Zhu, Wenshuai[1];Li, Huaming[1]

机构：[1]Jiangsu Univ, Sch Chem & Chem Engn, Inst Energy Res, Zhenjiang 212013, Jiangsu, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：391

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20200608133901);WOS:【SCI-EXPANDED(收录号:WOS:000524462300023)】；

基金：All authors appreciate the financial support from the National Natural Science Foundation of China (No. 21722604, 21908082 and 21606113), China Postdoctoral Science Foundation (No. 2019M651743), Natural Science Foundation of Jiangsu Province (BK20190852, BK20190854), Natural Science Research of Jiangsu Higher Education Institutions of China (19KJB530005)

语种：英文

外文关键词：Ultra-deep desulfurization; Boron carbide; Exfoliation; Fuels; Mechanism

摘要：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 similar to 90 % of the sulfur compounds in real diesel oil could be removed by the current aerobic ODS system.