室温合成Lews⁃Brönsted型低共熔溶剂萃取脱硫研究

Extraction Desulfurization with Synthesized Lews⁃Brönsted Deep Eutectic Solvent at Room Temperature

陈思宇 庄仕钊 李秀萍 赵荣祥

Siyu Chen Shizhao Zhuang Xiuping Li Rongxiang Zhao

辽宁石油化工大学 石油化工学院，辽宁 抚顺 113001

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

以Br?nsted酸（羧酸）和Lews酸（三氯化铁）为原料，通过搅拌方法使之形成低共熔溶剂，并采用红外光谱分析仪对低共熔溶剂进行分析。结果表明，Br?nsted酸与Lews酸通过氢键作用形成低共熔溶剂。以低共熔溶剂为萃取剂进行萃取脱硫研究，得出最佳脱硫条件：Br?nsted酸与Lews的物质的量比为1∶0.5，脱硫温度为30 ℃，剂油体积比为1∶5；在最佳脱硫条件下，低共熔溶剂对模拟油、汽油和柴油有较好的脱硫效果。

A deep eutectic solvent was synthesized by the stirring method with Br?nsted acid (carboxylic acid) and Lews acid (ferric chloride) as raw materials. It was then analyzed with a Fourier transform infrared (FTIR) spectrometer. The results showed that the deep eutectic solvent was formed by hydrogen bonding between Br?nsted acid and Lews acid. Extraction desulfurization with this deep eutectic solvent as the extractant was investigated, and the optimum desulfurization conditions were obtained as follows. When the molar ratio of Br?nsted acid to Lews acid is 1 ∶ 0.5, the desulfurization temperature is 30 °C, and the ratio of solvent to oil is 1 ∶ 5, the proposed extractant demonstrates a favorable desulfurization effect on the simulated oil, gasoline, and diesel.

辽宁省教育厅项目(201910148041)

10.3969/j.issn.1006-396X.2022.04.005