Catalytic oxidation desulfurization of gasoline liquefied petroleum gas (LPG) is a key process for the utilization of petroleum hydrocarbons. However, the inherent mechanism remains unclear and the kinetic investigation is usually performed in processes with limited mass transfer rates. Herein, the kinetics and mechanism of catalytic oxidation of sodium ethyl mercaptide were investigated with microfluidics. The effects of temperature, pressure, residence time, and gas-liquid flow ratio on the oxidation were assessed on the basis of eliminating mass transfer resistance. According to the results of UV-vis spectra and binding constant, it was confirmed that the catalytic center was in the form of the dimer. A heterogeneous reaction kinetic model was proposed as such. The kinetic parameters close to intrinsic kinetics and corresponding kinetic rate expression were obtained.

中文翻译：

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MeroxTM 工艺微流控汽油液化石油气催化氧化脱硫动力学及机理

汽油液化石油气(LPG)的催化氧化脱硫是石油烃利用的关键工艺。然而，其内在机制仍不清楚，动力学研究通常在传质速率有限的过程中进行。在此，用微流体研究了乙硫醇钠催化氧化的动力学和机理。在消除传质阻力的基础上，评估了温度、压力、停留时间和气液流量比对氧化的影响。根据紫外-可见光谱和结合常数的结果，证实催化中心为二聚体形式。非均相反应动力学模型被提出。