Extractive desulfurization of diesel fuel by amide-based type IV deep eutectic solvents
Extractive desulfurization of diesel fuel by amide-based type IV deep eutectic solvents
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DOI：
10.1016/j.molliq.2021.116620
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发表时间：
2021-09
影响因子：
6
通讯作者：
Lixian Xu;Luo Yaping;Hui Liu;Jie Yin;Hongping Li;Jiang Wei;Wenshuai Zhu;Liu Huaming;Hong-Bin Ji
中科院分区：
文献类型：
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作者：
Lixian Xu;Luo Yaping;Hui Liu;Jie Yin;Hongping Li;Jiang Wei;Wenshuai Zhu;Liu Huaming;Hong-Bin Ji
深共熔溶剂（deep eutectic solvents，DESs）作为离子液体的绿色替代溶剂，在分离、催化、合成等领域有着广泛的应用前景。本文以金属氯化物和酰胺为原料，通过配位作用合成了酰胺基IV型脱硫剂，并将其用于燃料的萃取脱硫。实验结果表明，DES ZnCl 2/N-甲基甲酰苯胺（ZnCl 2/MFA）具有最高的脱硫效率，能斯特分配系数（KN）为2.41。通过傅里叶变换红外光谱（FT-IR）和核磁共振氢谱（1H NMR）对萃取机理进行了初步探讨。密度泛函理论（DFT）研究表明，DBT的有效脱除主要是通过π-π相互作用和C单键H···π相互作用实现的。
As promising green alternative solvents for ionic liquids, deep eutectic solvents (DESs) have been widely used in separation, catalysis, synthesis, etc. Most of the researches have focused on the application of DESs formed by hydrogen bonding interaction. In this paper, amide-based type IV DESs were synthesized from metal chloride and amides with coordination interaction, and they were used for extractive desulfurization of fuels. The experimental results showed the DES ZnCl2/N-methylformanilide (ZnCl2/MFA) had the highest desulfurization efficiency with the Nernst partition coefficient (KN) as 2.41. The extraction mechanism was firstly explored by Fourier transform infrared spectrometer (FT-IR) and1H nuclear magnetic resonance (1H NMR). Then density functional theory (DFT) study suggested that π-π interactions and Csingle bondH···π interactions contribute mainly to effective removal of DBT from fuel oil by DESs.