Oxidative desulfurization catalyzed by magnetically recoverable CoFe2O4 nano-particles

IF 5.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Arabian Journal of Chemistry Pub Date : 2025-01-01 DOI:10.1016/j.arabjc.2024.106076

Fengmin Wu , Qinlin Yuan , Jinlong Wang , Xiaowei Wang , Jie Luo , Yafei Guo , Hang Xu , Xuefeng Wei

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引用次数: 0

Abstract

In this study, the magnetic CoFe₂O₄ was fabricated and utilized as catalysts to activate peroxymonosulfate (PMS) for removal of dibenzothiophene (DBT) in model oil with the extraction-coupled catalytic combined with oxidation desulfurization system (ECODS). The prepared magnetic CoFe₂O₄ was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Vibrating Sample Magnetometer VSM etc. The results showed that the prepared magnetic CoFe₂O₄ with a large specific surface area and exhibited excellent magnetism, phase composition, crystallinity and uniform distribution of the elements. The sulfur removal of DBT in n-octane was 95 % in 60 min at 40 °C under the conditions: 6 mL of model oil (600 ppm), O/S = 3:1 and 125 mg of CoFe₂O₄ powder. The possible mechanism of desulfurization was proposed by GC–MS. In conclusion, CoFe₂O₄ magnetic nanoparticles function well in both desulfurization and catalysis for PMS.

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磁可回收CoFe2O4纳米颗粒催化氧化脱硫研究

本研究制备了磁性CoFe2O4作为催化剂，利用萃取偶联催化-氧化脱硫系统（ECODS）活化过氧单硫酸盐（PMS）去除模型油中的二苯并噻吩（DBT）。采用扫描电镜（SEM）、傅里叶变换红外光谱（FT-IR）、x射线衍射（XRD）、x射线光电子能谱（XPS）、振动样品磁强计VSM等手段对制备的磁性CoFe2O4进行了表征。结果表明，制备的磁性CoFe2O4具有较大的比表面积，具有优异的磁性、相组成、结晶度和元素分布均匀性。在6 mL模型油（600 ppm）、O/S = 3:1和125 mg CoFe2O4粉末的条件下，在40°C条件下，60 min内，正辛烷中DBT的脱硫率为95%。采用气相色谱-质谱法分析了其可能的脱硫机理。综上所述，CoFe2O4磁性纳米颗粒对PMS具有良好的脱硫和催化作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Arabian Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

10.80

自引率

3.30%

发文量

763

审稿时长

63 days

期刊介绍： The Arabian Journal of Chemistry is an English language, peer-reviewed scholarly publication in the area of chemistry. The Arabian Journal of Chemistry publishes original papers, reviews and short reports on, but not limited to: inorganic, physical, organic, analytical and biochemistry. The Arabian Journal of Chemistry is issued by the Arab Union of Chemists and is published by King Saud University together with the Saudi Chemical Society in collaboration with Elsevier and is edited by an international group of eminent researchers.