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.

Synthesis of Functional Ionic Liquids by Thermal Heating and Ultrasonic-Assisted Methods

2012 ◽  
Vol 581-582 ◽  
pp. 326-329
Author(s):  
Zhe Zhang ◽  
Yi He Li ◽  
Hua Xiao ◽  
Chi Zhou Tu ◽  
Chun Hua Wang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Mild Condition ◽  
High Efficiency ◽  
Ester Group ◽  
Synthesis Condition ◽  
Synthesis Methods ◽  
Thermal Heating ◽  
Heating Method ◽  
Ultrasonic Assisted

1-(2-Methacryloyloxy)ethyl-3-butylimidazolium bromide, a kind of functional ionic liquid containing ester group, was synthesized by two synthesis methods, denoted as thermal heating method and ultrasonic-assisted method. The optimal synthesis condition of the thermal heating method is discussed. Comparison of the two methods shows that ultrasound significantly enhances the efficiency of the reaction. The ultrasonic-assisted method is quite promising in synthesis of ionic liquids with mild condition and high efficiency.

Air pollution: new bio-based ionic liquids absorb both hydrophobic and hydrophilic volatile organic compounds with high efficiency

2020 ◽  
Vol 18 (4) ◽  
pp. 1403-1411 ◽  
Author(s):  
Fatima Fahri ◽  
Katia Bacha ◽  
Fadwa Fatima Chiki ◽  
Jean-Pierre Mbakidi ◽  
Somenath Panda ◽  
...  
Keyword(s):  
Air Pollution ◽  
Ionic Liquids ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
High Efficiency ◽  
Volatile Organic

Extractive desulfurization of fuel using N-butylpyridinium-based ionic liquids

RSC Advances ◽  
2015 ◽  
Vol 5 (38) ◽  
pp. 30234-30238 ◽  
Author(s):  
Hongshuai Gao ◽  
Shaojuan Zeng ◽  
Xiaomin Liu ◽  
Yi Nie ◽  
Xiangping Zhang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Environmental Problems ◽  
Sulfur Compounds

Sulfur compounds in fuels have become one of the sources of serious environmental problems.

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.

Green Chemistry and Green Solvents: An Overview

2020 ◽  
Vol 7 (3) ◽  
pp. 314-325
Author(s):  
Barla Karuna Devi ◽  
Swathi Naraparaju ◽  
Chaganti Soujanya ◽  
Sayan Dutta Gupta
Keyword(s):  
Ionic Liquids ◽  
Green Chemistry ◽  
Chemical Reaction ◽  
Supercritical Co2 ◽  
Environmental Problems ◽  
Green Solvents ◽  
Eutectic Mixtures ◽  
Organic Carbonates

: Green chemistry emphasizes designing novel routes to overcome health and environmental problems that occur during a chemical reaction. Green solvents are used in place of conventional solvents that are hazardous to both human and the environment. Solvents like water, ionic liquids, supercritical CO2, biosolvents, organic carbonates, and deep eutectic mixtures can be used as green solvents. The review focuses on the properties, applications, and limitations of these solvents.

scholarly journals Oxidative Extractive Desulfurization System for Fuel Oil Using Acidic Eutectic-Based Ionic Liquid

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1050
Author(s):  
Sarrthesvaarni Rajasuriyan ◽  
Hayyiratul Fatimah Mohd Zaid ◽  
Mohd Faridzuan Majid ◽  
Raihan Mahirah Ramli ◽  
Khairulazhar Jumbri ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Removal Efficiency ◽  
Environmental Effects ◽  
Sulfur Compounds ◽  
Operating Conditions ◽  
Fuel Oil ◽  
Organosulfur Compounds ◽  
Dsc Analysis ◽  
Oil Refineries ◽  
Desulfurization Process

The biggest challenge faced in oil refineries is the removal of sulfur compounds in fuel oil. The sulfur compounds which are found in fuel oil such as gasoline and diesel, react with oxygen in the atmosphere to produce sulfur oxide (SOx) gases when combusted. These sulfur compounds produced from the reaction with oxygen in the atmosphere may result in various health problems and environmental effects. Hydrodesulfurization (HDS) is the conventional process used to remove sulfur compounds from fuel oil. However, the high operating conditions required for this process and its inefficiency in removing the organosulfur compounds turn to be the major drawbacks of this system. Researchers have also studied several alternatives to remove sulfur from fuel oil. The use of ionic liquids (ILs) has also drawn the interest of researchers to incorporate them in the desulfurization process. The environmental effects resulting from the use of these ILs can be eliminated using eutectic-based ionic liquids (EILs), which are known as greener solvents. In this research, a combination of extractive desulfurization (EDS) and oxidative desulfurization (ODS) using a photocatalyst and EIL was studied. The photocatalyst used is a pre-reported catalyst, Cu-Fe/TiO2 and the EIL were synthesized by mixing choline chloride (ChCl) with organic acids. The acids used for the EILs were propionic acid (PA) and p-toluenesulfonic acid (TSA). The EILs synthesized were characterized using thermogravimetry analyser (TGA) differential scanning calorimetry (DSC) analysis to determine the physical properties of the EILs. Based on the TGA analysis, ChCl (1): PA (3) obtained the highest thermal stability whereas, as for the DSC analysis, all synthesized EILs have a lower melting point than its pure component. Further evaluation on the best EIL for the desulfurization process was carried out in a photo-reactor under UV light in the presence of Cu-Fe/TiO2 photocatalyst and hydrogen peroxide (H2O2). Once the oxidation and extraction process were completed, the oil phase of the mixture was analyzed using high performance liquid chromatography (HPLC) to measure the sulfur removal efficiency. In terms of the desulfurization efficiency, the EIL of ChCl (1): TSA (2) showed a removal efficiency of about 99.07%.

Ultrasound-assisted oxidative desulfurization of Arabian extra light oil (AXL) with molecular characterization of the sulfur compounds

Fuel ◽  
2021 ◽  
Vol 305 ◽  
pp. 121612
Author(s):  
Jiyuan Fan ◽  
Aiping Chen ◽  
Saumitra Saxena ◽  
Sundaramurthy Vedachalam ◽  
Ajay K. Dalai ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Oxidative Desulfurization ◽  
Sulfur Compounds ◽  
Light Oil ◽  
Ultrasound Assisted

Extraction Coupled with Aerobic Oxidative Desulfurization of Model Diesel Using a B-type Anderson Polyoxometalate Catalyst in Ionic Liquids

2019 ◽  
Vol 149 (7) ◽  
pp. 1888-1893 ◽  
Author(s):  
Lulu Sun ◽  
Ting Su ◽  
Pengcheng Li ◽  
Jiajia Xu ◽  
Naimeng Chen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Oxidative Desulfurization ◽  
Model Diesel
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