Polyoxometalate-based ionic liquid catalyst with unprecedented activity and selectivity for oxidative desulfurization of diesel in [Omim]BF4

Hao, Lingwan; Sun, Lulu; Su, Ting; Hao, Dongmei; Liao, Weiping; Deng, Changliang; Ren, Wanzhong; Zhang, Yanmei; Lü, Hongying

doi:10.1016/j.cej.2018.10.006

Cited by 131 publications

(56 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the synthesized system has the following advantages: content of ionic liquid in the catalytic system (0.5 mL of ionic liquid in ref. [24], less than 100 mg in our case) and reaction time (3 h in ref. [27], 1 h in this paper).…”

Section: Introductionmentioning

confidence: 78%

“…To eliminate phase transfer constraints, interfacial carriers are used, which contribute to a faster and more efficient reaction [20]. Ionic liquids have become widespread as interfacial carriers in the oxidation of sulfur compounds [1,[21][22][23][24][25]. For example, the authors of [24] managed to increase the conversion of dibenzothiophene (DBT) from 10% to 100% in 1 h by adding an ionic liquid (IL) to the catalytic mixture.…”

Section: Introductionmentioning

confidence: 99%

“…Ionic liquids have become widespread as interfacial carriers in the oxidation of sulfur compounds [1,[21][22][23][24][25]. For example, the authors of [24] managed to increase the conversion of dibenzothiophene (DBT) from 10% to 100% in 1 h by adding an ionic liquid (IL) to the catalytic mixture. In another article [26], it was shown that more than 90% of DBT can be removed by adding to hydrogen peroxide [(C 2 H 4 OH)N(CH 3 ) 3 ]FeCl 4 (ChFeCl 4 ) and an ionic liquid (1-butyl-3-methylimidazole tetrafluoroborate [BMIM]BF 4 or 1-n-octyl-3-methylimidazole tetrafluoroborate [OMIM]BF 4 ) as a catalyst.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Deep Oxidative Desulfurization of Fuels in the Presence of Brönsted Acidic Polyoxometalate-Based Ionic Liquids

et al. 2020

View full text Add to dashboard Cite

Polyoxometalate-based ionic liquid hybrid materials with a pyridinium cation, containing Brönsted acid sites, were synthesized and used as catalysts for the oxidation of model and real diesel fuels. Keggin-type polyoxometalates with the formulae [PMo12O40]3−, [PVMo11O40]4−, [PV2Mo10O40]4−, [PW12O40]3− were used as anions. It was shown that increasing the acid site strength leads to an increase of dibenzothiophene conversion to the corresponding sulfone. The best results were obtained in the presence of a catalyst, containing a nicotinic acid derivative as cation and phosphomolybdate as anion. The main factors affecting the process consisting of catalyst dosage, temperature, reaction time, oxidant dosage were investigated in detail. Under optimal conditions full oxidation of dibenzothiophene and more than a 90% desulfurization degree of real diesel fuel (initial sulfur content of 2050 ppm) were obtained (the oxidation conditions: NK-1 catalyst, molar ratio H2O2:S 10:1, molar ratio S:Mo 8:1, 1 mL MeCN, 70 °C, 1 h). The synthesized catalysts could be used five times with a slight decrease in activity.

show abstract

Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deep Oxidative Desulfurization of Fuels in the Presence of Brönsted Acidic Polyoxometalate-Based Ionic Liquids

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Compounds containing Mo(VI) active centers have proven to be particularly effective as catalysts to activate H 2 O 2 for the oxidation of the sulfur compounds to the corresponding sulfoxides and/or sulfones. Most of the studies have been performed with inorganic (e.g., Na + [20][21][22][23][24][25]. In some cases, hybrid materials were prepared by immobilization of the anions in support matrices such as poly(vinyl alcohol), mesoporous silica nanoparticles, layered double hydroxides, and metal-organic frameworks [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Desulfurization and Denitrogenation Processes to Treat Diesel Using Mo(VI)‐Bipyridine Catalysts

et al. 2020

View full text Add to dashboard Cite

High efficiency was found for desulfurization and denitrogenation processes to treat diesel using either the hybrid material {[MoO3(2,2′‐bipy)][MoO3(H2O)]}n or the octanuclear complex [Mo8O22(OH)4(di‐tBu‐bipy)4] (2,2′‐bipy = 2,2′‐bipyridine, di‐tBu‐bipy = 4,4′‐di‐tert‐butyl‐2,2′‐bipyridine) as catalysts. These processes were employed in a single procedure to simultaneously remove sulfur (dibenzothiophene, 4‐methyldibenzothiophene, and 4,6‐dimethyldibenzothiophene) and nitrogen (indole and quinoline) compounds from diesel. A reaction time of two hours was sufficient to achieve at least 99.9 % S removal and 97 % N removal. Furthermore, the catalytic systems presented a high capacity to be reused/recycled for consecutive desulfurization/denitrogenation cycles.

show abstract

“…As a supplementary desulfurization approach, oxidation desulfurization (ODS) has attracted great attention in the past decades due to the absence of hydrogen and the mild reaction conditions . ODS involves two steps: oxidation of the compound and removal of the sulfone (oxidation product) by extraction.…”

Section: Introductionmentioning

confidence: 99%

Removal of Dibenzothiophene from Diesels by Extraction and Catalytic Oxidation with Acetamide‐Based Deep Eutectic Solvents

Hao

Deng

et al. 2019

Chem Eng & Technol

Self Cite

View full text Add to dashboard Cite

A series of acetamide-based deep eutectic solvents (DESs) with different proportions were prepared. Extraction and catalytic oxidation desulfurization (ECODS) of the acetamide-based DESs were investigated and the process was optimized. Such DESs with a molar ratio of acetamide and p-TsOH of 1/3 (C 2 H 5 NO/3p-TsOH) exhibits such a remarkable catalytic activity that the dibenzothiophene (DBT) removal could reach 100 % under optimized conditions. C 2 H 5 NO/3p-TsOH was used for the oxidative desulfurization of actual commercial diesel. The sulfur removal of diesel achieved up to 98 %. C 2 H 5 NO/3p-TsOH could be recycled six times and the desulfurization activity was slightly decreased. Evaluation of the mechanism indicated that oxidative desulfurization (ODS) was realized via dual activation of acetamide-based DESs. A novel and effective way for deep desulfurization of diesel is provided.

show abstract

Polyoxometalate-based ionic liquid catalyst with unprecedented activity and selectivity for oxidative desulfurization of diesel in [Omim]BF4

Cited by 131 publications

References 46 publications

Deep Oxidative Desulfurization of Fuels in the Presence of Brönsted Acidic Polyoxometalate-Based Ionic Liquids

Deep Oxidative Desulfurization of Fuels in the Presence of Brönsted Acidic Polyoxometalate-Based Ionic Liquids

Desulfurization and Denitrogenation Processes to Treat Diesel Using Mo(VI)‐Bipyridine Catalysts

Removal of Dibenzothiophene from Diesels by Extraction and Catalytic Oxidation with Acetamide‐Based Deep Eutectic Solvents

Contact Info

Product

Resources

About