Catalytic Oxidative Desulfurization of Model Fuel Using [HPMo][HTAC]2/SiO2 as a Amphiphilic Catalyst

2011 ◽  
Vol 396-398 ◽  
pp. 827-832 ◽  
Author(s):  
Qi Na Li ◽  
Guang Hui Wang ◽  
Jiang Hua Qiu ◽  
Ning Wang ◽  
Qi Gang Zhang ◽  
...  
Keyword(s):  
Sol Gel ◽  
Oxidative Desulfurization ◽  
Structure Parameters ◽  
Desulfurization Rate ◽  
Mesoporous Catalysts ◽  
Model Fuel ◽  
Catalytic Oxidative Desulfurization ◽  
Highly Dispersed ◽  
Ft Ir ◽  
Loading Amount

Mesoporous catalysts [HPMo][HTAC]2/SiO2 with different loading amount of [HPMo][HTAC]2 were prepared by sol–gel method. The catalysts were characterized by XRD, FT-IR, SEM and pore structure parameters. The catalytic activity for the oxidative desulfurization of benzothiophene (BT) and dibenzothiophene (DBT) was evaluated using hydrogen peroxide as an oxidant. Results of the charaterization show that the Keggin structures of all the loaded catalysts were kept and [HPMo][HTAC]2 was highly dispersed on the surface of SiO2. The desulfurization rate of the catalyst 20%[HPMo][HTAC]2/SiO2 can be up to 91% for DBT and 75% for BT in 2 h.

Deep Oxidative Desulfurization of Model Fuel with H2O2 Catalyzed by Ce-Mo/SiO2 Catalysts

2011 ◽  
Vol 396-398 ◽  
pp. 858-863
Author(s):  
Ning Wang ◽  
Guang Hui Wang ◽  
Jiang Hua Qiu ◽  
Qi Na Li ◽  
Yu Qin Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Sol Gel ◽  
Oxidative Desulfurization ◽  
High Dispersion ◽  
Structure Parameters ◽  
Reaction Conditions ◽  
Desulfurization Rate ◽  
Model Fuel ◽  
Ft Ir ◽  
Optimal Reaction

The catalysts of HPMo/SiO2 modified with Ce3+ were prepared by the sol-gel method. The catalysts were characterized by FT-IR, XRD, SEM and pore structure parameters and evaluated for the oxidative desulfurization of model fuel using hydrogen peroxide as an oxidant. Results showed that the catalysts kept the Keggin structures and the introduction of CeCl3 promoted the high dispersion of MoO3 over SiO2 and increased the specific surface area of the catalysts. Under the optimal reaction conditions, the desulfurization rate for dibenzothiophene (DBT) and benzothiophene (BT) achieved 98.9% and 43.4%, respectively.

Immobilization of Acidic Ionic Liquid in Silica Gel for Catalytic Oxidative Desulfurization of Fuel Oils(I): Preparation and Charaterization of Catalysts

2015 ◽  
Vol 1090 ◽  
pp. 178-182 ◽  
Author(s):  
Hao Yang ◽  
Jian Hong Wang ◽  
Peng Wang ◽  
Hua Ling Hu ◽  
Cong Zhen Qiao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Silica Gel ◽  
Sol Gel ◽  
Oxidative Desulfurization ◽  
Acidic Ionic Liquid ◽  
Structures And Properties ◽  
Fuel Oils ◽  
Catalytic Oxidative Desulfurization ◽  
Highly Dispersed ◽  
Ft Ir

A series of highly dispersed ionic liquid catalysts were prepared by immobilized acidic ionic liquid [BMIM]HSO4 in silica gel through sol-gel methods. The structures and properties of the catalysts were characterized by FT-IR, SEM and XRD. The results showed the [BMIM]HSO4 had been successfully confined or encapsulated in a silica-gel matrix.

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 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 Catalytic Conversion of Cellulose to 5-hydroxymethylfurfural (5-HMF) Over Nano SO42--ZrO2 /MCM-41 Catalysts

2020 ◽  
Vol 36 (1) ◽  
Author(s):  
Pham Tung Son ◽  
Le Ha Giang ◽  
Nguyen Ba Manh ◽  
Pham Thi Thu Trang ◽  
Vu Quang Loi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Selectivity ◽  
Sol Gel ◽  
Catalyst System ◽  
Hydroxymethyl Furfural ◽  
Structure And Morphology ◽  
Highly Dispersed ◽  
Ft Ir ◽  
Mcm 41 ◽  
Medium Acidity

A zirconium catalyst system supported on MCM-41 (S-Z) with various weight components (4-20 wt.%) Was synthesized by the sol-gel method. Structure and Morphology Catalysts were characterized by X-RD, TEM, BET, FT-IR and TPD-NH3 methods. In this catalyst, ZrO2 is highly dispersed on the surface of MCM-41 capillaries. Catalytic activity and selectivity were evaluated by the effectiveness of mild hydrothermal decomposition of cellulose to 5-hydroxymethyl furfural (5-HMF). The results show that a catalyst with medium acidity exhibits a high selectivity of 5-HMF. Keywords: S-Zr/MCM-41 materials, sol-gel methods, cellulose, 5-HMF.

Oxidative Desulfurization of Gasoline Oil Using K2FeO4 over SO42–/ZrO2 Solid Superacid

2011 ◽  
Vol 183-185 ◽  
pp. 2086-2090
Author(s):  
Hua Song ◽  
Deng Wang ◽  
Yong Wei Zhang
Keyword(s):  
Reaction Time ◽  
Oxidative Desulfurization ◽  
Volume Ratio ◽  
Fuel Oil ◽  
Solid Superacid ◽  
Desulfurization Rate ◽  
Methanol Extraction ◽  
Ft Ir ◽  
H 20

A catalyst comprising SO42–/ZrO2superacid was prepared by impregnation and characterized by FT-IR, XRD, and BET. A novel procedure for oxidative desulfurization of simulated light fuel oil using K2FeO4over the SO42–/ZrO2solid superacid was developed. The effects of the oxidantion and extraction conditions on desulfurization were investigated. At temperature of 30 °C, SZ of 0.2 g, K2FeO4of 0.2 g, reaction time of 1 h, 20 mL of oil is oxidized, followed by methanol extraction at 15 °C for 10 min with the volume ratio of solvent/oil of 1, the results display desulfurization rate for simulated light fuel oil and straight-run gasoline were 88.2% and 89.2%, respectively.

Catalytic oxidative desulfurization of model fuel utilizing functionalized HMS catalysts: characterization, catalytic activity and mechanistic studies

2021 ◽  
Author(s):  
Fang Wang ◽  
Ke Xiao ◽  
Lin Shi ◽  
Liancheng Bing ◽  
Dezhi Han ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxidative Desulfurization ◽  
Mechanistic Studies ◽  
Model Fuel ◽  
Catalytic Oxidative Desulfurization

In this study, a novel Fe(ii) porphyrin conjugated amino modified HMS catalyst was synthesized and characterized by BET, XRD, TEM, SEM, and UV-vis techniques.

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.

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