Choline chloride-based deep eutectic solvents for efficient cycloaddition of CO<sub>2</sub> with propylene oxide

Wu, Kai; Su, Ting; Hao, Dongmei; Liao, Weiping; Zhao, Yuchao; Ren, Wanzhong; Deng, Changliang; Lü, Hongying

doi:10.1039/c8cc04412k

Cited by 88 publications

(59 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The C 2 H 5 NO/3 p ‐TsOH demonstrated a remarkable desulfurization activity. In agreement with our previous work, there is a correlation between the composition and chemical properties , , , , . Finally, the C 2 H 5 NO/3 p ‐TsOH system demonstrating the best oxidation desulfurization activity was chosen for further research.…”

Section: Resultssupporting

confidence: 74%

See 1 more Smart Citation

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

Section: Resultssupporting

confidence: 74%

“…According to the results of some previous works, the compositions of the DESs play a vital role for their physicochemical properties , , , , . Different desulfurization systems of acetamide‐based DESs with various molar proportions of acetamide and p ‐TsOH were investigated (Fig.…”

Section: Resultsmentioning

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

show abstract

“…The polarization of the CÀ O bond promoted by the carboxylic acid groups on the biochar's surface is key to accelerating the epoxide ring-opening performed by the co-catalytic nucelophile. [26][27][28][29][30][31][32]…”

Section: Cycloaddition Of Co 2 and Propylene Oxide (Po)mentioning

confidence: 99%

“…Treatment of biochar and carbon‐based materials with nitric acid (HNO 3 ) is known to greatly increase the content of oxygenated groups on their surface, introducing more hydroxyl and carboxyl groups. These functional groups are important structural motifs in catalysts for the reaction chosen herein . However, the use of oxidized biochar to remove pollutants is the only application studied to date .…”

Section: Introductionmentioning

confidence: 99%

“…These functional groups are important structural motifs in catalysts for the reaction chosen herein. [26][27][28][29][30][31][32][33][34][35][36][37] However, the use of oxidized biochar to remove pollutants is the only application studied to date. [24,25] As a catalyst, functionalized biochar containing sulfonic acid groups (SO 3 H) has shown favorable performance in the hydrolysis of biomass, biodiesel production, and in various acid-catalyzed reactions (e. g. acylation of alcohols and amines, and alkylation of aromatics).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Oxidized Biochar as a Simple, Renewable Catalyst for the Production of Cyclic Carbonates from Carbon Dioxide and Epoxides

et al. 2019

View full text Add to dashboard Cite

Hard‐ and softwood residues (from birch and pine respectively) of forestry, pulp, and paper industries (e. g. sawdust, branches) were used to prepare biochar, which was then oxidized using nitric acid to produce catalytic carboxylic acid functionalized biochar. This oxidized biochar, ox–bc, in the presence of a co‐catalyst, showed excellent catalytic activity towards the cycloaddition reaction between CO2 and epoxides using mild conditions (CO2 pressure, 10 bar). No differences in catalytic activity were seen between the two types of oxidized biochar despite the hardwood ox–bc having a significantly higher surface area. The catalysts function through activation of the epoxide reagent via hydrogen‐bonding with carboxylic acid groups on the surface. The number of surface acid groups was reduced by reaction with 3‐aminopropyltriethoxysilane and the resulting material was inactive in the reactions studied. The ox–bc catalysts are sustainable, economic, and renewable alternatives for currently used heterogeneous systems and are also the first carbon‐based materials derived from biomass to exhibit good recyclability (over five runs) with a broad substrate scope for the production of cyclic carbonates from epoxides and CO2.

show abstract

Metal‐Free Cycloaddition of Epoxides and Carbon Dioxide Catalyzed by Triazole‐Bridged Bisphenol

2020

View full text Add to dashboard Cite

1,2,3‐triazole‐bridged bisphenol has been developed as organocatalyst in the coupling of CO2 and epoxides. In the absence of halide co‐catalyst, halomethyl‐substituted epoxides reacted with 1 bar CO2, while a series of aryl‐substituted epoxides were transformed into cyclic carbonates in 57–95 % yields at 120 °C and 10 bar pressure. 1,2,3‐triazole‐bridged bisphenol is thus among the most efficient organocatalysts that are active in the absence of both metal and halide. For alkyl‐substituted epoxides, good yields of 80–95 % were obtained under 1 bar CO2 in the presence of halide. The bisphenol was recycled 14 times in the presence of halide, and 5 times in the absence of halide. The two hydroxyl groups of bisphenol are proposed to work synergistically in the catalytic cycle.

show abstract

Choline chloride-based deep eutectic solvents for efficient cycloaddition of CO₂ with propylene oxide

Abstract: Choline chloride-based deep eutectic solvents (DESs) exhibited remarkable activity in the cycloaddition of CO2 with propylene oxide (PO) in the absence of any additives under solvent- and metal-free conditions as well as recyclability.

Cited by 88 publications

References 41 publications

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

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

Oxidized Biochar as a Simple, Renewable Catalyst for the Production of Cyclic Carbonates from Carbon Dioxide and Epoxides

Metal‐Free Cycloaddition of Epoxides and Carbon Dioxide Catalyzed by Triazole‐Bridged Bisphenol

Contact Info

Product

Resources

About

Choline chloride-based deep eutectic solvents for efficient cycloaddition of CO2 with propylene oxide

Abstract: Choline chloride-based deep eutectic solvents (DESs) exhibited remarkable activity in the cycloaddition of CO2 with propylene oxide (PO) in the absence of any additives under solvent- and metal-free conditions as well as recyclability.

Cited by 88 publications

References 41 publications

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

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

Oxidized Biochar as a Simple, Renewable Catalyst for the Production of Cyclic Carbonates from Carbon Dioxide and Epoxides

Metal‐Free Cycloaddition of Epoxides and Carbon Dioxide Catalyzed by Triazole‐Bridged Bisphenol

Contact Info

Product

Resources

About

Choline chloride-based deep eutectic solvents for efficient cycloaddition of CO₂ with propylene oxide