scholarly journals Facile Construction of Magnetic Ionic Liquid Supported Silica for Aerobic Oxidative Desulfurization in Fuel

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1496
Author(s):  
Fujie Liu ◽  
Ming Zhang ◽  
Yongkang Gao ◽  
Haojie Tan ◽  
Hongping Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ball Milling ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Reaction Conditions ◽  
Deep Desulfurization ◽  
Fuel Demand ◽  
Desulfurization Process ◽  
Milling Method ◽  
Magnetic Ionic Liquid

With the rapid growth in fuel demand, deep desulfurization of fuel oil is vitally necessary for the sake of health and environmental protection. In this work, a kind of magnetic ionic liquid supported silica is prepared by a facile ball milling method, and applied in the aerobic oxidative desulfurization of organosulfurs in fuel. The experimental results indicated that ball milling procedure can increase the specific surface area of samples, which is beneficial to oxidative desulfurization process. Under the optimal reaction conditions, the prepared materials can have an entire removal of aromatic sulfur compounds as well as a good recycling ability. Moreover, the introduction of Fe3O4 did not decline the desulfurization performance, but help the catalyst to be easily separated after reaction.

Structures of Li1+xMn2-XO4 Synthesized by Different Methods

2013 ◽  
Vol 652-654 ◽  
pp. 844-847 ◽  
Author(s):  
Xing Hua Liang ◽  
Tian Jiao Liu ◽  
Xiao Ming Hua
Keyword(s):  
Crystal Lattice ◽  
Ball Milling ◽  
Lithium Battery ◽  
Diffraction Peak ◽  
Coprecipitation Method ◽  
Synthetic Method ◽  
X Ray Diffraction ◽  
Reaction Conditions ◽  
X Ray ◽  
Milling Method

In the paper, Li1+xMn2-xO4 are synthesized by ball-milling method and coprecipitation method. The phases of three compounds have been analyzed by X-ray diffraction to compare diffraction peak, crystal system and crystal lattice′ s size. Advisedly, the results show that a compound has more purity phase and better crystallinity. Synthetic method and reaction conditions of this compound are as follows: via coprecipitation method, heat the sample at 250°C for 4h in air, followed by heating at 750°C for 36h in air. This analysis provides a reasonable and valuable thinking for research of the structures of Li1+xMn2-xO4. And it is propitious to develop the positive material of lithium battery.

The quantity and type of ILs needed to form magnetic-heteropolyacid mesoporous catalysts and their highly performance for DBT removal

2020 ◽  
Vol 4 (5) ◽  
pp. 2422-2437 ◽  
Author(s):  
Si-Wen Li ◽  
Wei Wang ◽  
Jian-She Zhao
Keyword(s):  
Ionic Liquid ◽  
Oxidative Desulfurization ◽  
Mesoporous Catalysts ◽  
Desulfurization Process ◽  
Mcm 41

Magnetic-heteropolyacid mesoporous catalysts, formed through the linkage of an ionic liquid, a magnetic Fe3O4@MCM-41 support, and a heteropolyacid, have been prepared and used in the deep oxidative desulfurization process.

Oxidative Desulfurization of Dibenzothiophene Catalyzed by Polyoxometalate-Based Ionic Liquid

2014 ◽  
Vol 1033-1034 ◽  
pp. 65-69
Author(s):  
Min Wang ◽  
Qin Wu ◽  
Han Sheng Li ◽  
Yun Zhao ◽  
Qing Ze Jiao
Keyword(s):  
Ionic Liquid ◽  
Sulfonic Acid ◽  
Sulfur Removal ◽  
Oxidative Desulfurization ◽  
Ionization Mass ◽  
Thermogravimetric Analyzer ◽  
Catalytic Oxidative Desulfurization ◽  
Ionization Mass Spectrum ◽  
Electrospray Ionization Mass Spectrum ◽  
Desulfurization Process

A polyoxometalate-based ionic liquid, 1-(4-sulfonic acid) methylimidazolium phosphotungstate ([MIMBS]3PW12O40), was synthesized and characterized by Fourier transform infrared spectrum, nuclear magnetic resonance, electrospray ionization mass spectrum and thermogravimetric analyzer. [MIMBS]3PW12O40exhibited high activity for the extractive catalytic oxidative desulfurization process, together with H2O2and CH3CN/H2O. The sulfur removal of DBT could reach 99.9% under wild conditions, and the catalyst could be used three times with only a slight decline in activity.

Sulfur in Petroleum

2016 ◽  
pp. 1-52 ◽  
Author(s):  
Waqas Ahmad
Keyword(s):  
Ionic Liquids ◽  
Oxidative Desulfurization ◽  
Reactor Design ◽  
Organosulfur Compounds ◽  
Reaction Conditions ◽  
Adsorptive Desulfurization ◽  
Oxidative Desulphurization ◽  
Different Types ◽  
Desulfurization Process ◽  
Ultrasound Assisted

This chapter describes the occurrence of organosulfur compounds in petroleum, their detrimental effects and various techniques for removal of these compounds. The sole commercial desulfurization process i.e. HDS is broadly discussed in terms of reaction conditions, different types of catalysts used, reactor design and mechanistic pathways in the process. The shortcomings of HDS and needs for developing new desulfurization techniques is also described. Various newly developed research techniques for desulfurization are also discussed with their technical backgrounds, commercial overview, advantages and shortcomings in the light of literature reports. These techniques include, Adsorptive desulfurization, Bio-desulfurization, Precipitative desulfurization, and Oxidative desulfurization with its sub types like ODS using H2O2- Polyoxometalates (POM), ODS with Ionic liquids, Photo-oxidative desulphurization and Ultrasound Assisted ODS.

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.

Pyridinium-based temperature-responsive magnetic ionic liquid for oxidative desulfurization of fuels

2013 ◽  
Vol 229 ◽  
pp. 250-256 ◽  
Author(s):  
Wenshuai Zhu ◽  
Peiwen Wu ◽  
Lei Yang ◽  
Yonghui Chang ◽  
Yanhong Chao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Oxidative Desulfurization ◽  
Temperature Responsive ◽  
Magnetic Ionic Liquid

Photocatalytic oxidative desulfurization of dibenzothiophene by C/TiO2@MCM-41 nanoparticles under visible light and mild conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34652-34662 ◽  
Author(s):  
Mahshid Zarrabi ◽  
Mohammad H. Entezari ◽  
Elaheh K. Goharshadi
Keyword(s):  
Fuel Cell ◽  
Oxidative Desulfurization ◽  
Environmental Pressures ◽  
Mild Conditions ◽  
Ultra Low Sulfur Diesel ◽  
Deep Desulfurization ◽  
Desulfurization Process ◽  
Petroleum Refineries ◽  
Low Sulfur ◽  
Mcm 41

Today, due to the environmental pressures on the sulfur content of gasoline and fuel cell applications, petroleum refineries need a very deep desulfurization process to reach the ultra-low sulfur diesel (ULSD, 1 ppm).

scholarly journals Synthesis, Characterization and Application of 1-Butyl-3 Methylimidazolium Chloride as Green Material for Extractive Desulfurization of Liquid Fuel

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Swapnil A. Dharaskar ◽  
Mahesh N. Varma ◽  
Diwakar Z. Shende ◽  
Chang Kyoo Yoo ◽  
Kailas L. Wasewar
Keyword(s):  
Energy Efficient ◽  
Liquid Fuel ◽  
Molecular Structures ◽  
Liquid Fuels ◽  
Reaction Conditions ◽  
Green Material ◽  
H Nmr ◽  
Deep Desulfurization ◽  
Desulfurization Process ◽  
C Nmr

The possible application of imidazolium ionic liquids as energy-efficient green material for extractive deep desulfurization of liquid fuel has been investigated. 1-Butyl-3-methylimidazolium chloride [BMIM]Cl was synthesized by nucleophilic substitution reaction of n-methylimidazolium and 1-chlorobutane. Molecular structures of the ILs were confirmed by FTIR,1H-NMR, and13C-NMR. The thermal properties, conductivity, solubility, water content and viscosity analysis of [BMIM]Cl were carried out. The effects of reaction time, reaction temperature, sulfur compounds, and recycling of IL without regeneration on dibenzothiophene removal of liquid fuel were presented. In the extractive desulfurization process, the removal of dibenzothiophene in n-dodecane using [BMIM]Cl was 81% with mass ratio of 1 : 1, in 30 min at 30°C under the mild reaction conditions. Also, desulfurization of real fuels with IL and multistage extraction were studied. The results of this work might offer significant insights in the perceptive use of imidazoled ILs as energy-efficient green material for extractive deep desulfurization of liquid fuels as it can be reused without regeneration with considerable extraction efficiency.

Deep Desulfurization of Model Oil Using Ionic Liquid and Active Carbon Binary System

2012 ◽  
Vol 550-553 ◽  
pp. 957-960
Author(s):  
Qiang Li ◽  
Yang Liu ◽  
Juan Juan Fei ◽  
Geng Sheng Ji ◽  
Xu Ding Gu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Binary System ◽  
Active Carbon ◽  
Room Temperature ◽  
Mass Ratio ◽  
Deep Desulfurization ◽  
Desulfurization Process ◽  
Desulfurization Efficiency ◽  
Model Oil ◽  
Temperature Time

Ionic liquid (IL) N-methyl-N-methylimidazoliumdimethyl phosphate ([DMIM][DMP]) and active carbon (AC) binary system were established and demonstrated to be effective for the deep removal of sulfur compounds (Dibenzothiophene, DBT) from model oil at room temperature. Mass ratio of IL to active carbon on the extractive performance, desulfurization temperature, time and desulfurization reagent to model oil were investigated. In the first stage desulfurization efficiency of binary system, IL and active carbon were 65.09%, 51.72% and 47.3%，which was followed the order of binary system > IL > active carbon. It was suitable to carried out desulfurization process with mass ratio of IL to active carbon in 1:1, binary system to model oil in 1:1 for 10 min at 25-45oC. In the optimiazed condition, desulfurization efficiency of binary system was nearly 100% after the fifth stage desulfurization process.

Deep oxidative desulfurization catalyzed by an ionic liquid-type peroxotungsten catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25904-25910 ◽  
Author(s):  
Jizhong Chen ◽  
Chen Chen ◽  
Ran Zhang ◽  
Li Guo ◽  
Li Hua ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Efficiency ◽  
Oxidative Desulfurization ◽  
Solvent Free ◽  
Deep Desulfurization ◽  
Solvent Free Conditions ◽  
Liquid Type ◽  
Model Oil

Peroxotungsten anion-based ionic liquid-type catalysts carried out the deep desulfurization of model oil with H2O2 under mild and solvent-free conditions with high efficiency.

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