Deep eutectic solvents as non-traditionally multifunctional media for the desulfurization process of fuel oil

2021 ◽  
Author(s):  
Zhiguo Zhu ◽  
Hongying Lü ◽  
Ming Zhang ◽  
Hengquan Yang
Keyword(s):  
Physicochemical Properties ◽  
Deep Eutectic Solvents ◽  
Fuel Oil ◽  
Future Opportunity ◽  
Desulfurization Process

This review summarizes the physicochemical properties of deep eutectic solvents (DESs) and their applications for the desulfurization processes of fuel oil. Moreover, current challenges and future opportunity are discussed.

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%.

scholarly journals Physicochemical Properties, Cytotoxicity, and Antioxidative Activity of Natural Deep Eutectic Solvents Containing Organic Acid

2019 ◽  
Vol 33 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Anamarija Mitar ◽  
Manuela Panić ◽  
Kristina Radošević ◽  
Ivana Radojčić Redovniković ◽  
Kristina Zagajski Kučan ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Antioxidative Activity ◽  
Deep Eutectic Solvents ◽  
Oxygen Radical ◽  
Structural Variations ◽  
Natural Deep Eutectic Solvents ◽  
Environmentally Safe ◽  
Mcf 7

Natural deep eutectic solvents (NADES) may be considered ‘designer solvents’ due to their numerous structural variations and the possibility of tailoring their physicochemical properties. Prior to their industrial application, characterization of NADES is essential, including determination of their physicochemical properties, cytotoxicity, and antioxidative activity. The most important physicochemical properties of eight prepared NADES (choline chloride:malic acid, proline:malic acid, choline chloride:proline:malic acid, betaine:malic acid, malic acid:glucose, malic acid:glucose:glycerol, choline chloride:citric acid, and betaine:citric acid) were measured as functions of temperature and water content. In general, the structure of prepared NADES greatly influences their physical properties, which could be successfully modified and adjusted by addition of water. All tested NADES were absolutely benign and noncorrosive for investigated steel X6CrNiTi18-10. Furthermore, cytotoxicity of prepared solvents was assessed toward three human cell lines (HEK-293T, HeLa, and MCF-7 cells), and antioxidative activity was measured by the Oxygen Radical Absorbance Capacity (ORAC) method. With regard to cell viability, all tested NADES containing carboxylic acid could be classified as practically harmless and considered environmentally safe. The ORAC values indicated that the tested NADES displayed antioxidative activity.

Modeling the Physicochemical Properties of Natural Deep Eutectic Solvents

ChemSusChem ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3789-3804 ◽  
Author(s):  
Attila Kovács ◽  
Erik C. Neyts ◽  
Iris Cornet ◽  
Marc Wijnants ◽  
Pieter Billen
Keyword(s):  
Physicochemical Properties ◽  
Deep Eutectic Solvents ◽  
Natural Deep Eutectic Solvents

Physicochemical Properties of Choline Chloride-Based Deep Eutectic Solvents with Polyols: An Experimental and Theoretical Investigation

2020 ◽  
Vol 8 (50) ◽  
pp. 18712-18728
Author(s):  
Krzysztof Biernacki ◽  
Hiléia K. S. Souza ◽  
Cláudio M. R. Almeida ◽  
Alexandre L. Magalhães ◽  
Maria Pilar Gonçalves
Keyword(s):  
Physicochemical Properties ◽  
Theoretical Investigation ◽  
Choline Chloride ◽  
Deep Eutectic Solvents

scholarly journals Experimental and predicted physicochemical properties of monopropanolamine-based deep eutectic solvents

2020 ◽  
Vol 309 ◽  
pp. 113110
Author(s):  
Bartosz Nowosielski ◽  
Marzena Jamrógiewicz ◽  
Justyna Łuczak ◽  
Maciej Śmiechowski ◽  
Dorota Warmińska
Keyword(s):  
Physicochemical Properties ◽  
Deep Eutectic Solvents

Physicochemical properties of ammonium-based deep eutectic solvents and their electrochemical evaluation using organometallic reference redox systems

2013 ◽  
Vol 113 ◽  
pp. 205-211 ◽  
Author(s):  
Laleh Bahadori ◽  
Mohammed Harun Chakrabarti ◽  
Farouq Sabri Mjalli ◽  
Inas Muen AlNashef ◽  
Ninie Suhana Abdul Manan ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Deep Eutectic Solvents ◽  
Redox Systems ◽  
Electrochemical Evaluation

scholarly journals Deep desulfurization performance of thiophene with deep eutectic solvents loaded carbon nanotube composites

2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Yue Liu ◽  
Jiaojiao Xue ◽  
Xin Zhou ◽  
Yingna Cui ◽  
Jingmei Yin
Keyword(s):  
Composite Material ◽  
Chemical Properties ◽  
Oxidation Mechanism ◽  
Deep Eutectic Solvents ◽  
Fuel Oil ◽  
Desulfurization Rate ◽  
Composites Materials ◽  
Deep Desulfurization ◽  
Physico Chemical ◽  
Nanotube Composites

One source of air pollution is the combustion of sulfur compounds in fuel oil. Reducing sulfur content in fuel oil has become a hot issue demanding timely solutions. Using ionic liquids and deep eutectic solvents (DESs) to remove sulfides in fuel oil has achieved good results presently. However, since DESs are liquid and their transportation and separation are inconvenient, a new way is proposed that the DESs are loaded on the carbon nanotubes (CNTs) with large specific surface area and good chemical stability. A series of composites materials (DESs/CNTs) were prepared. Finally, they are applied to the removal of sulfides in fuel oil. This loading method, which imparts introduced unique physico-chemical properties of the DESs to the carrier materials, preserves both advantages while overcoming some of the problems with DESs. The interaction between DESs and CNTs is mutual promotion. Therefore, this study has important theoretical significance and industrial application value. Under optimal conditions, when the reagent ChCl/p-TsOH (1 : 2) was loaded on multi-walled CNTs (OD = 30–60 nm) to prepare the composite material (ChCl/p-TsOH)/CNTs, the single desulfurization rate of the composite material was 95.8%. Finally, the catalytic/oxidation mechanism was studied systematically and this work would provide a green route for the desulfurization of fuels.

Sign in / Sign up

Export Citation Format

Share Document