Synthesis of novel magnetic ionic liquids as high efficiency catalysts for extraction-catalytic oxidative desulfurization in fuel oil

2019 ◽  
Vol 43 (48) ◽  
pp. 19232-19241
Author(s):  
Tao Wang ◽  
Wen-hui Yu ◽  
Tan-xiangning Li ◽  
Yu-ting Wang ◽  
Jun-jun Tan ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
High Efficiency ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Magnetic Ionic Liquids ◽  
Deep Desulfurization ◽  
Catalytic Oxidative Desulfurization

Deep desulfurization of magnetic ionic liquids [C4(mim)2]Cl2/2FeCl3.

scholarly journals Polyoxometalate Dicationic Ionic Liquids as Catalyst for Extractive Coupled Catalytic Oxidative Desulfurization

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 356
Author(s):  
Jingwen Li ◽  
Yanwen Guo ◽  
Junjun Tan ◽  
Bing Hu
Keyword(s):  
Ionic Liquids ◽  
Oxidative Desulfurization ◽  
Catalytic Performance ◽  
Fuel Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Efficient Catalyst ◽  
Dibenzothiophene Sulfone ◽  
Catalytic Oxidative Desulfurization ◽  
Dicationic Ionic Liquids ◽  
Model Oil

Wettability is an important factor affecting the performance of catalytic oxidative desulfurization. In order to develop an efficient catalyst for the extractive coupled catalytic oxidative desulfurization (ECODS) of fuel oil by H2O2 and acetonitrile, a novel family of imidazole-based polyoxometalate dicationic ionic liquids (POM-DILs) [Cn(MIM)2]PW12O40 (n = 2,4,6) was synthesized by modifying phosphotungstic acid (H3PW12O40) with double imidazole ionic liquid. These kinds of catalysts have good dispersity in oil phase and H2O2, which is conducive to the deep desulfurization of fuel oil. The catalytic performance of the catalysts was studied under different conditions by removing aromatic sulfur compound dibenzothiophene (DBT) from model oil. Results showed that [C2(MIM)2]PW12O40 had excellent desulfurization efficiency, and more than 98% of DBT was removed under optimum conditions. In addition, it also exhibited good recyclability, and activity with no significant decline after seven reaction cycles. Meanwhile, dibenzothiophene sulfone (DBTO2), the only oxidation product of DBT, was confirmed by Gas Chromatography-Mass Spectrometry (GC-MS), and a possible mechanism of the ECODS process was proposed.

scholarly journals A Comprehensive Review on Catalytic Oxidative Desulfurization of Liquid Fuel Oil

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 229 ◽  
Author(s):  
Muhammad Hossain ◽  
Hoon Park ◽  
Hang Choi
Keyword(s):  
Catalytic Oxidation ◽  
Selective Adsorption ◽  
Oxidative Desulfurization ◽  
Complete Removal ◽  
Extractive Distillation ◽  
Fuel Oil ◽  
Healthy Life ◽  
Refractory Compounds ◽  
Catalytic Oxidative Desulfurization ◽  
Future Challenges

The production of green fuel oil is of the utmost importance for maintaining a healthy life and environment in the current world. Effective and complete removal of sulfur refractory compounds (such as 4,6-dimethyldibenzothiophene and other alkyl-substituted thiophene derivatives) from fuel oil is essential to meet the new requirements of sulfur standards. Several techniques have been proposed for desulfurization of fuel oil, such as hydrodesulfurization (HDS), selective adsorption, extractive distillation, biodesulfurization, and oxidative desulfurization (ODS). The removal of sulfur by the HDS process requires higher investment costs, high reaction temperature (up to 400 °C), and high pressure (up to 100 atm) reactors. On the other hand, studies have shown that the ODS process is remarkably successful in the removal of sulfur under mild reaction conditions. This review article presents a comparative analysis of various existing catalytic oxidation techniques: acetic acid/formic acid catalytic oxidation, heteropolyacid (HPA) catalytic oxidation, ionic liquid catalytic oxidation, molecular sieve catalytic oxidation, polyoxometalates catalytic oxidation, titanium catalytic oxidation, and ultrasound-assisted oxidation systems, as well as discusses research gaps, and proposes important recommendations for future challenges.

Performances, kinetics and mechanisms of catalytic oxidative desulfurization from oils

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 103253-103269 ◽  
Author(s):  
Sainan Wei ◽  
Huijun He ◽  
Yan Cheng ◽  
Chunping Yang ◽  
Guangming Zeng ◽  
...  
Keyword(s):  
Air Quality ◽  
Oxidative Desulfurization ◽  
Deep Desulfurization ◽  
Catalytic Oxidative Desulfurization

Ultra-deep desulfurization technologies are critical for cleaner oils and consequent better air quality.

Deep catalytic oxidative desulfurization of fuels by novel Lewis acidic ionic liquids

2018 ◽  
Vol 177 ◽  
pp. 81-88 ◽  
Author(s):  
Jingyuan Wang ◽  
Luhong Zhang ◽  
Yongli Sun ◽  
Bin Jiang ◽  
Yang Chen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Oxidative Desulfurization ◽  
Acidic Ionic Liquids ◽  
Catalytic Oxidative Desulfurization

Size-matched polyoxometalate encapsulated in UiO-66(Zr): an extraordinary catalyst with double active sites for highly efficient ultra-deep oxidative desulfurization of fuel oil

2021 ◽  
Author(s):  
Fangyuan He ◽  
Heyi Zhang ◽  
Xiaonan Li ◽  
Jie Yang ◽  
Wenqing Ma ◽  
...  
Keyword(s):  
Active Sites ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Highly Efficient ◽  
Catalytic Oxidative Desulfurization ◽  
First Time

In this work, the first time we selected a size-matched polyoxometalate α-Mo8O26, and successfully prepared Mo8-UiO-66 as a catalyst for extractive and catalytic oxidative desulfurization systems (ECODS) with double active...

Preparation of CoWO4/g-C3N4 and its Ultra-Deep Desulfurization Property

2017 ◽  
Vol 70 (3) ◽  
pp. 271
Author(s):  
Pengfei Xing ◽  
Rongxiang Zhao ◽  
Xiuping Li ◽  
Xiaohan Gao
Keyword(s):  
Removal Rate ◽  
Oxidative Desulfurization ◽  
Optimal Operation ◽  
Fuel Oil ◽  
X Ray Diffraction ◽  
Operation Conditions ◽  
Deep Desulfurization ◽  
Ft Ir ◽  
Model Oil ◽  
Ft Ir Spectroscopy

The ultra-deep desulfurization of fuel oil has become inevitable for environmental protection. Here, CoWO4/g-C3N4 was used as a catalyst, H2O2 as an oxidant, and 1-ethyl-3-methylimidazolium ethylsulfate ([EMIM][EtSO4], IL) as an extractant for the oxidative desulfurization of model oil. Scanning electron microscopy, FT-IR spectroscopy, N2 adsorption isotherms, and X-ray diffraction were used to confirm the morphology, structure, and properties of the catalysts. The influence of calcination temperature, loading dose of cobalt, amount of H2O2, reaction temperature, and other parameters were investigated. The removal rate of sulfide in model oil could reach 92.9 % at 80°C in 180 min under the optimal operation conditions (V(oil) = 5 mL, T = 80°C, m(catalyst) = 0.03 g, V(H2O2) = 0.4 mL, t = 180 min, V(IL) = 1.0 mL). In addition, the catalyst was reused five times with no significant reduction in the catalytic activity.

Fast heterogeneous oxidative desulfurization of dibenzothiophene from ionic liquids supported urchin-liked meso-silica

2020 ◽  
Vol 10 (2) ◽  
pp. 199-205
Author(s):  
Jinrui Zhang ◽  
Ming Zhang ◽  
Jiaqi Liu ◽  
Chao Wang ◽  
Hongping Li ◽  
...  
Keyword(s):  
Air Pollution ◽  
Ionic Liquids ◽  
Reaction Mechanism ◽  
Mild Condition ◽  
Oxidation Product ◽  
High Efficiency ◽  
Oxidative Desulfurization ◽  
Environmental Problems ◽  
Sulfur Compounds ◽  
Green House

As air pollution and green-house effect have caused numerous environmental problems in past decades, and increasing investigations have been focused on reducing the emission of harmful gas such as SOx. Oxidative desulfurization of fuel is considered as a promising method for its high efficiency and mild condition. Herein, ionic liquids supported urchin-liked meso-silica were facilely prepared and applied for heterogeneous oxidative desulfurization, which had a good dispersion of polyoxometalate ionic liquids. With the prepared materials, sulfur compounds can be efficiently removed. Moreover, the oxidation product was analyzed by GC-MS to further investigate reaction mechanism.

scholarly journals Extractive and Catalytic Oxidative Desulfurization of Gasoline by Methyltrioxorhenium in Ionic Liquids

2013 ◽  
Vol 28 (1) ◽  
pp. 516-521 ◽  
Author(s):  
Mingdong Zhou ◽  
Wenye Meng ◽  
Yang Li ◽  
Qiang Wang ◽  
Xuebing Li ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Oxidative Desulfurization ◽  
Catalytic Oxidative Desulfurization
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