Oxidative desulfurization of dibenzothiophene using a catalyst of molybdenum supported on modified medicinal stone

RSC Advances ◽  
2016 ◽  
Vol 6 (21) ◽  
pp. 17036-17045 ◽  
Author(s):  
Lu Qiu ◽  
Yan Cheng ◽  
Chunping Yang ◽  
Guangming Zeng ◽  
Zhiyong Long ◽  
...  
Keyword(s):  
Oxidative Desulfurization ◽  
Catalytic Oxidative Desulfurization ◽  
Model Oil

In this paper, the performance of catalytic oxidative desulfurization from model oil was studied using a catalyst of molybdenum supported on modified medicinal stone (Mo/MMS).

scholarly journals Desulfurization Performance of Choline Chloride-Based Deep Eutectic Solvents in the Presence of Graphene Oxide

Environments ◽  
2020 ◽  
Vol 7 (11) ◽  
pp. 97
Author(s):  
Chiau Yuan Lim ◽  
Mohd Faridzuan Majid ◽  
Sarrthesvaarni Rajasuriyan ◽  
Hayyiratul Fatimah Mohd Zaid ◽  
Khairulazhar Jumbri ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Oxidative Desulfurization ◽  
Deep Eutectic Solvents ◽  
Tetraethylene Glycol ◽  
Catalytic Oxidative Desulfurization ◽  
The One ◽  
Model Oil

Extractive catalytic oxidative desulfurization (ECODS) is the one of the recent methods used in fuel desulfurization which involved the use of catalyst in the oxidative desulfurization of diesel fuel. This study is aimed to test the effectiveness of synthesized choline chloride (ChCl) based deep eutectic solvent (DES) in fuel desulfurization via ECODS method, with the presence of graphene oxide (GO) as catalyst and hydrogen peroxide (H2O2) as oxidant. In this study, 16 DESs based on choline chloride were synthesized using glycerol (GLY), ethylene glycol (EG), tetraethylene glycol (TEG) and polyethylene glycol (PEG). The characterization of the synthesized DES was carried out via Fourier transform infrared spectroscopy (FTIR) analysis, density, and viscosity determination. According to the screening result, ChCl-PEG (1:4) was found to be the most effective DES for desulfurization using ECODS method, with a removal of up to 47.4% of sulfur containing compounds in model oil in just 10 min per cycle after the optimization of the reaction parameters, and up to 95% desulfurization efficiency could be achieved by six cycles of desulfurization. It is found that the addition of GO as catalyst does not increase the desulfurization performance drastically; hence, future studies for the desulfurization performance of DESs made up from ChCl and PEG and its derivatives can be done simply by using extraction desulfurization (EDS) method instead of ECODS method, for cost reduction purpose and easier regulation of DES waste into environment.

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.

Immobilization of Acidic Ionic Liquid on Silica Gel for Catalytic Oxidative Desulfurization of Fuel Oils(II): Desulfurization

2015 ◽  
Vol 1090 ◽  
pp. 183-187 ◽  
Author(s):  
Kai Peng Cheng ◽  
Hao Yang ◽  
Jian Hong Wang ◽  
Hui Peng Liu ◽  
Cong Zhen Qiao
Keyword(s):  
Ionic Liquid ◽  
Reaction Time ◽  
Silica Gel ◽  
Oxidative Desulfurization ◽  
Molar Ratio ◽  
Acidic Ionic Liquid ◽  
Fuel Oils ◽  
Catalytic Oxidative Desulfurization ◽  
Highly Dispersed ◽  
Model Oil

A series of highly dispersed ionic liquid catalysts were used for the oxidation desulfurization of dibenzothiophene (DBT) in model oil in the presence of H2O2. The effects of the loading of [BMIM]HSO4immobilized, reaction time, temperature, O/S molar ratio and the dosage of catalysts on DBT removal were investigated in detail. The catalyst with the loading of [BMIM]HSO4was 25% exhibited the highest activity. The DBT removal of model oil can reach 99.9% in 5 h at 60 °C, O/S molar ratio of 10, Vmodeloil=10mL, mcatalysts=2.00g. The catalysts can be easily recycled and can be recycled 2 times without a significant decrease in activity.

Catalytic Oxidative Desulfurization of Fuel by H2O2 In Situ Produced via Oxidation of 2-Propanol

2012 ◽  
Vol 51 (13) ◽  
pp. 4868-4874 ◽  
Author(s):  
Hong-Xing Zhang ◽  
Jia-Jun Gao ◽  
Hong Meng ◽  
Ying-zhou Lu ◽  
Chun-Xi Li
Keyword(s):  
Oxidative Desulfurization ◽  
Catalytic Oxidative Desulfurization
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