In situ electrochemical oxidation-distillation desulfurization of gasoline with electrogenerated dichromate. (2nd June 2020)

• Record Type: Journal Article
• Authors: Tang, Xiao-dong; Wang, Chun; Li, Jing-jing; Jiao, Shuang; Wang, Zhi-yu; Yang, Liu
• Is Part Of: Petroleum science and technology. Volume 38:Number 11(2020)
• Page Start: 723
• Page End: 730
• Publication Date: 2020-06-02
• Subjects: deep desulfurization -- distillation -- electrochemical oxidation -- gasoline -- Cr3+/Cr2O72−; Liquid fuels -- Periodicals; Petroleum -- Periodicals; 665.505
• DOI: 10.1080/10916466.2020.1771365
• Languages: English
• ISSNs: 1091-6466

Abstract

Abstract: Cr 3+ contained sulfuric acid aqueous solution and β -PbO2 /Ti anode were prepared for electrochemical oxidation-distillation desulfurization of straight-run gasoline. Strong oxidant (Cr2 O7 2− ) was formed and reacted with organic sulfides. The oxidized sulfides were removed by distillation. Under optimal operating conditions, the desulfurization rate of gasoline reached to 99.16%. β -PbO2 /Ti electrode were characterized by XRD and SEM. Model oil was analyzed by FTIR and GC-MS and the possible desulfurization mechanism was proposed. The recycling experiments of the electrolyte showed its excellent stability, but the concentration of H + in electrolyte should be monitored, since the water will be consumed in electrolysis process, and the over-high H + concentration is not good for the formation of Cr2 O7 2− .