Supramolecular-based preparation of deep eutectic solvents synergized with carbon nanotubes for oxidative desulfurization of fuels

IF 5.2 2区化学 Q2 CHEMISTRY, PHYSICAL Journal of Molecular Liquids Pub Date : 2025-02-03 DOI:10.1016/j.molliq.2025.127077

Meijun Chen , Changjun Zou , Wenyue Tang , Japan Trivedi

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Abstract

A supramolecular deep eutectic solvent (SUPRADES) was synthesized by cyclodextrin and lactic acid, and its synergistic effect on fuel desulfurization performance with carbon nanotubes (CNTs) was also explored. The stability of CNTs in SUPRADES and the effect of CNTs on the viscosity of SUPRADES were investigated. The results indicate that adding CNTs can enhance the desulfurization efficiency of supramolecular deep eutectic solvents, and can achieve a better desulfurization effect in a shorter timeframe. The desulfurization rates were examined under varying conditions, including different CNTs contents, temperatures, O/S ratios, initial sulfur concentrations, and SUPRADES-to-simulated oil volume ratios. The desulfurization rate can reach 90.32 % at a temperature of 80 °C and a mass fraction of CNTs of 0.1 wt%. An increase in desulfurization rate of 19.47 % at 80 °C was observed for HL-β-CD/CNT compared to HL-β-CD. By characterizing the desulfurized SUPRADES, it was found that its structure remained stable after desulfurization. This SUPRADES synergized CNTs provide a novel approach for fuel desulfurization.

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碳纳米管协同制备燃料氧化脱硫用深共晶溶剂的超分子研究

以环糊精和乳酸为原料合成了超分子深度共晶溶剂SUPRADES，并探讨了其与碳纳米管（CNTs）对燃料脱硫性能的协同作用。研究了CNTs在SUPRADES中的稳定性以及CNTs对SUPRADES粘度的影响。结果表明，添加CNTs可以提高超分子深共晶溶剂的脱硫效率，并能在更短的时间内达到更好的脱硫效果。研究了不同条件下的脱硫率，包括不同CNTs含量、温度、O/S比、初始硫浓度和suprades与模拟油体积比。当温度为80℃，CNTs质量分数为0.1 wt%时，脱硫率可达90.32%。与HL-β-CD相比，HL-β-CD/CNT在80℃下的脱硫率提高了19.47%。通过对脱硫后的SUPRADES进行表征，发现其脱硫后结构保持稳定。这种SUPRADES协同碳纳米管为燃料脱硫提供了一种新的途径。

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.