Propionic acid-based deep eutectic solvents (C3H6O2/X ZnCl2, X from 0.1 to 0.6) were synthesized by stirring a mixture of propionic acid and zinc chloride at 100 °C. C3H6O2/0.5 ZnCl2 was characterized by infrared spectroscopy, electrospray ionization mass spectrometry and 1H NMR spectroscopy. The oxidative desulfurization (ODS) of model oil and gasoline was investigated with C3H6O2/0.5 ZnCl2 DESs as an extractant and catalyst, and hydrogen peroxide (H2O2) as an oxidant. Some influence factors such as acidity of DESs, reaction temperature, H2O2 to sulfur (H2O2/S) molar ratio, and volume ratio of DESs to oil were studied. The results indicated that the desulfurization rates of dibenzothiophene (DBT), 4,6-dimethyl-dibenzothiophene (4,6-DMDBT), and gasoline can reach 99.42%, 98.80%, and 66.67%, respectively, under conditions of 30 °C, an H2O2/S molar ratio of 4, and volume ratio of DESs to oil of 0.15/1 over a period of 180 min. The desulfurization rate of DBT in model oil reached 96.31% after five recycles in the C3H6O2/0.5 ZnCl2–H2O2 systems.
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机译：丙酸基深共熔溶剂（C 3 H 6 O 2 / X ZnCl 2 ， X 从0.1到0.6）通过搅拌丙酸和氯化锌在100°C的混合物。 C 3 H 6 O 2 /0.5通过红外光谱，电喷雾电离质谱和 1 H NMR光谱对ZnCl 2 进行了表征。用C 3 H 6 O 对模型石油和汽油的氧化脱硫（ODS）进行了研究 2 /0.5 ZnCl 2 DESs作为萃取剂和催化剂，以及过氧化氢（H 2 < / sub> O 2 ）作为氧化剂。 DES的酸度，反应温度，H 2 O 2 对硫的影响因素（H 2 O 2 / S）的摩尔比，以及DES与油的体积比。结果表明，在30°C的条件下，二苯并噻吩（DBT），4,6-二甲基-二苯并噻吩（4,6-DMDBT）和汽油的脱硫率分别达到99.42％，98.80％和66.67％。 ，H 2 O 2 / S摩尔比为4，DES与油的体积比为0.15 180分钟内为/ 1。在C 3 H 6 O <5中循环五次后，模型油中DBT的脱硫率达到96.31％。 small> 2 /0.5 ZnCl 2 –H 2 O 2 系统。
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