OA⁃ZnCl2/SG催化剂的合成及其氧化脱硫性能

Synthesis of OA⁃ZnCl2/SG Catalyst and Its Oxidative Desulfurization Performance

王韵淇 李珊珊 汤梦蝶 刘闯 柳畅 付琦 王志猛 赵荣祥

Yunqi Wang Shanshan Li Mengdie Tang Chuang Liu Chang Liu Qi Fu Zhimeng Wang Rongxiang Zhao

辽宁石油化工大学 石油化工学院，辽宁 抚顺 113001

School of Petrochemical Engineering，Liaoning Petrochemical University，Fushun Liaoning 113001，China

以正辛酸?氯化锌型低共熔溶剂（OA?ZnCl2）为添加组分、硅胶（SG）为载体，经溶胶?凝胶过程合成OA?ZnCl2/SG负载型催化剂。采用红外光谱、X射线衍射、N2?吸附脱附和扫描电镜等技术对催化剂的结构进行分析。以OA?ZnCl2/SG为吸附剂和催化剂、双氧水为氧化剂，研究其氧化脱硫性能。考察了低共熔溶剂的负载量、反应温度、n(H2O2)/n(S)、催化剂质量和不同硫化物对脱硫效果的影响。结果表明，在最佳条件下催化剂的脱硫率达到95.6%，经过5 次循环后脱硫率降为89.7%。

OA?ZnCl2/SG supported catalyst was synthesized by sol?gel process using octanoic acid?zinc chloride deep eutectic solvents (OA?ZnCl2 DESs) as additive. The structure of the catalyst was analyzed by infrared spectroscopy, X?ray diffraction, N2 adsorption?desorption and scanning electron microscopy. The performance of oxidative desulfurization was studied by using OA?ZnCl2/SG as adsorbent and catalyst, and hydrogen peroxide as oxidant. The loading dose of DESs, reaction temperature, n(H2O2)/n(S) ratio, the amount of catalyst and the effect of different sulfides on desulfurization rate were investigated. The results show that the desulfurization rate of the catalyst reaches 95.6% under the optimal conditions, and after 5 cycles, the desulfurization rate drops to 89.7%.

辽宁省自然科学基金指导计划项目(2019?ZD?0064);辽宁省大学生创新创业训练计划项目(201910148051)

10.3969/j.issn.1672-6952.2022.04.003