Oxidative Desulfurization of Dibenzothiophene Using Cobalt (II) Complexes with Substituted Salen-Type Ligands as Catalysts in Model Fuel Oil

2020 ◽  
Author(s):  
Deependra Tripathi ◽  
Raj K. Singh
Keyword(s):  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Model Fuel

Catalytic Oxidative Desulfurization of Model Fuel Oil with Phosphomolybdic Acid Loaded on SiO2

2012 ◽  
Vol 512-515 ◽  
pp. 2110-2114 ◽  
Author(s):  
Jiang Hua Qiu ◽  
Guang Hui Wang ◽  
Yun Cheng Bao ◽  
Yu Qin Zhang ◽  
Dan Lin Zeng
Keyword(s):  
Sol Gel ◽  
Oxidative Desulfurization ◽  
Phosphomolybdic Acid ◽  
Fuel Oil ◽  
Molar Ratio ◽  
First Order Kinetics ◽  
Model Fuel ◽  
Catalytic Oxidative Desulfurization ◽  
Apparent Activation Energies ◽  
Calcined Temperature

Phosphomolybdic acid loaded on SiO2 has been prepared as the catalyst by the sol-gel method. The catalysts were evaluated for the oxidative desulfurization of model fuel oil using hydrogen peroxide as an oxidant. Results show that the calcined temperature, Mo/Si molar ratio, catalyst dosage, H2O2 dosage, reaction temperature and reaction time affect the desulfurization rates. The oxidative reactions fit apparent first-order kinetics, and the apparent activation energies of BT and DBT are 51.87 KJ/mol and 25.79 KJ/mol, respectively.

scholarly journals Promotion of oxidative desulfurization performance of model fuel by 3DOM Ce-doped HPW/TiO2 material

2020 ◽  
Vol 13 (2) ◽  
pp. 4043-4052 ◽  
Author(s):  
Zhou Lina ◽  
Du Yue ◽  
Guo Zhenran ◽  
Jiaheng Lei ◽  
Xiaodi Du
Keyword(s):  
Oxidative Desulfurization ◽  
Model Fuel

Boosting oxidative desulfurization of model fuel by POM-grafting ZIF-8 as a novel and efficient catalyst

Polyhedron ◽  
2019 ◽  
Vol 170 ◽  
pp. 364-372 ◽  
Author(s):  
Mahboube Ghahramaninezhad ◽  
Fatemeh Pakdel ◽  
Mahdi Niknam Shahrak
Keyword(s):  
Oxidative Desulfurization ◽  
Efficient Catalyst ◽  
Model Fuel

Highly efficient Co(II) porphyrin catalysts for the extractive oxidative desulfurization of dibenzothiophene in fuel oils under mild conditions

2020 ◽  
Vol 25 (01) ◽  
pp. 24-30
Author(s):  
Deependra Tripathi ◽  
Inderpal Yadav ◽  
Himani Negi ◽  
Raj K. Singh ◽  
Vimal C. Srivastava ◽  
...  
Keyword(s):  
Oxidative Desulfurization ◽  
Volume Ratio ◽  
Fuel Oil ◽  
Molar Ratio ◽  
Mild Conditions ◽  
Reaction Optimization ◽  
Middle Distillate Fuel ◽  
Fuel Oils ◽  
Optimized Conditions ◽  
Distillate Fuel

Co(II) porphyrins have been utilized as efficient and selective catalysts for the extractive oxidative desulfurization reaction on the refractory dibenzothiophene (DBT) in [Formula: see text]-dodecane (model middle distillate fuel oil). The acetonitrile was taken as extracting polar solvent and H2O2 was used as oxidant. The reaction optimization was done with respect to DBT:catalyst molar ratio; DBT:H2O2 molar ratio; extracting solvent: CH3CN/[Formula: see text]-dodecane volume ratio; reaction temperature and time. Under the optimized conditions, a maximum of [Formula: see text]98% DBT removal was achieved by using the meso-tetrakis(4[Formula: see text] methoxyphenyl)porphyrinatocobalt(II) as catalyst under mild conditions at 50[Formula: see text]C.

scholarly journals Catalytic oxidative desulfurization of a 4,6-DMDBT containing model fuel by metal-free activated carbons: the key role of surface chemistry

2019 ◽  
Vol 21 (24) ◽  
pp. 6685-6698 ◽  
Author(s):  
Zoi Christina Kampouraki ◽  
Dimitrios A. Giannakoudakis ◽  
Konstantinos S. Triantafyllidis ◽  
Eleni A. Deliyanni
Keyword(s):  
Surface Chemistry ◽  
Activated Carbons ◽  
Oxidative Desulfurization ◽  
Ambient Conditions ◽  
Metal Free ◽  
Model Fuel ◽  
Catalytic Oxidative Desulfurization

Commercial micro/mesoporous activated carbons were utilized as metal-free catalysts for the desulfurization of a model fuel, i.e. 4,6-dimethyldibenzothiophene (4,6-DMDBT) in hexadecane, under ambient conditions. Oxidation of carbons led to a further catalytic improvement.

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.

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