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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
【摘要】 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%。
【Abstract】 OA-ZnCl2/SG supported catalyst was synthesized by sol-gel process using octanoic acid-zinc chloride deep eutectic solvents(OA-ZnCl2DESs) 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%.
【Key words】 Deep eutectic solvents; Sol-gel method; Oxidation desulfurization; Zinc chloride;
- 【文献出处】 辽宁石油化工大学学报 ,Journal of Liaoning Petrochemical University , 编辑部邮箱 ,2022年04期
- 【分类号】TE624.9
- 【下载频次】28