Abstract Cr3+ contained sulfuric acid aqueous solution and β-PbO2/Ti anode were prepared for electrochemical oxidation-distillation desulfurization of straight-run gasoline. Strong oxidant (Cr2O72−) 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 Cr2O72−.

中文翻译：

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电生重铬酸盐原位电化学氧化-蒸馏汽油脱硫

摘要 制备了含Cr3+的硫酸水溶液和β-PbO2/Ti阳极，用于直馏汽油电化学氧化-蒸馏脱硫。形成强氧化剂（Cr2O72-）并与有机硫化物反应。通过蒸馏除去氧化的硫化物。在最佳操作条件下，汽油脱硫率达到99.16%。采用XRD和SEM对β-PbO2/Ti电极进行表征。通过FTIR和GC-MS对模型油进行分析，提出了可能的脱硫机理。电解液的回收实验表明其稳定性很好，但电解液中的H+浓度需要监测，因为电解过程中会消耗水，过高的H+浓度不利于Cr2O72-的形成。