Size-matched polyoxometalate encapsulated in UiO-66(Zr): an extraordinary catalyst with double active sites for highly efficient ultra-deep oxidative desulfurization of fuel oil

2021 ◽  
Author(s):  
Fangyuan He ◽  
Heyi Zhang ◽  
Xiaonan Li ◽  
Jie Yang ◽  
Wenqing Ma ◽  
...  
Keyword(s):  
Active Sites ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Highly Efficient ◽  
Catalytic Oxidative Desulfurization ◽  
First Time

In this work, the first time we selected a size-matched polyoxometalate α-Mo8O26, and successfully prepared Mo8-UiO-66 as a catalyst for extractive and catalytic oxidative desulfurization systems (ECODS) with double active...

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.

Ultrathin NiCo2O4 nanosheets with dual-metal active sites for enhanced solar water splitting of a BiVO4 photoanode

2019 ◽  
Vol 7 (39) ◽  
pp. 22274-22278 ◽  
Author(s):  
Chenchen Feng ◽  
Qi Zhou ◽  
Bin Zheng ◽  
Xiang Cheng ◽  
Yajun Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Active Sites ◽  
Oxygen Vacancies ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Highly Efficient ◽  
Dual Metal ◽  
Nico2o4 Nanosheets ◽  
First Time

Spinel-structured NiCo2O4 nanosheets with dual-metal active sites, an ultrathin structure, and abundant oxygen vacancies were decorated for the first time on a BiVO4 photoanode for highly efficient PEC water oxidation.

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.

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.

A size-matched POM@MOF composite catalyst for highly efficient and recyclable ultra-deep oxidative fuel desulfurization

2018 ◽  
Vol 5 (7) ◽  
pp. 1563-1569 ◽  
Author(s):  
Yun-Lei Peng ◽  
Jingyi Liu ◽  
Hai-Feng Zhang ◽  
Dong Luo ◽  
Dan Li
Keyword(s):  
Heterogeneous Catalyst ◽  
Phosphotungstic Acid ◽  
Metal Organic Framework ◽  
Oxidative Desulfurization ◽  
Composite Catalyst ◽  
Highly Efficient ◽  
Keggin Type ◽  
Catalytic Oxidative Desulfurization ◽  
Metal Organic ◽  
Organic Framework

A composite of Keggin-type phosphotungstic acid (H3PW12O40) encapsulated in sized-matched metal–organic framework UiO-67 (PW12@UiO-67) was prepared as a heterogeneous catalyst for extractive and catalytic oxidative desulfurization systems (ECODS).

Molybdenum anchored on NH2 -modified spherical SiO2 : A highly efficient and stable catalyst for oxidative desulfurization of fuel oil

2018 ◽  
Vol 32 (11) ◽  
pp. e4521 ◽  
Author(s):  
Zhen Hu ◽  
Shuxiang Lu ◽  
Xiaoqiao Huang ◽  
Jianxin Li ◽  
Yongsheng Duan ◽  
...  
Keyword(s):  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Highly Efficient ◽  
Stable Catalyst

Synthesis of novel magnetic ionic liquids as high efficiency catalysts for extraction-catalytic oxidative desulfurization in fuel oil

2019 ◽  
Vol 43 (48) ◽  
pp. 19232-19241
Author(s):  
Tao Wang ◽  
Wen-hui Yu ◽  
Tan-xiangning Li ◽  
Yu-ting Wang ◽  
Jun-jun Tan ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
High Efficiency ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Magnetic Ionic Liquids ◽  
Deep Desulfurization ◽  
Catalytic Oxidative Desulfurization

Deep desulfurization of magnetic ionic liquids [C4(mim)2]Cl2/2FeCl3.

Clean fuel-oriented investigation of thiophene oxidation by hydrogen peroxide using polyoxometalate as catalyst

2009 ◽  
Vol 63 (5) ◽  
Author(s):  
Gao Zhang ◽  
Rui Wang ◽  
Feng Yu ◽  
Hai Zhao
Keyword(s):  
Hydrogen Peroxide ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Clean Fuel ◽  
Catalyst Screening ◽  
Recoverable Catalyst ◽  
Oxidative Removal ◽  
Thiophene Oxidation ◽  
First Time ◽  
Oxidation By Hydrogen Peroxide

AbstractAfter catalyst screening for oxidative desulfurization of fuel oil within several polyoxometalates, H3PW6Mo6O40 was confirmed for the first time to be an effective and recoverable catalyst for the oxidative removal of thiophene, being also effective for the desulfurization of real diesel and gasoline.

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