scholarly journals Efficient and Reusable Iron Catalyst to Convert CO2 into Valuable Cyclic Carbonates

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1089
Author(s):  
Ana P. C. Ribeiro ◽  
Peter Goodrich ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic Effect ◽  
Iron Catalyst ◽  
Cyclic Carbonate ◽  
Cyclic Carbonates ◽  
Mild Conditions ◽  
First Time

The production of cyclic carbonates from CO2 cycloaddition to epoxides, using the C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz = 1H-pyrazol-1-yl) as a catalyst, is achieved in excellent yields (up to 98%) in a tailor-made ionic liquid (IL) medium under mild conditions (80 °C; 1–8 bar). A favorable synergistic catalytic effect was found in the [FeCl2{κ3-HC(pz)3}]/IL system. Notably, in addition to exhibiting remarkable activity, the catalyst is stable during ten consecutive cycles, the first decrease (11%) on the cyclic carbonate yield being observed during the 11th cycle. The use of C-scorpionate complexes in ionic liquids to afford cyclic carbonates is presented herein for the first time.

Mapping the “Extra Solvent Power, ESP” of Ionic Liquids for Monomers, Polymers and Globular Nanoparticles

2017 ◽  
Author(s):  
Jose A. Pomposo
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Linear Polymers ◽  
Green Solvents ◽  
Ionic Polymers ◽  
First Time ◽  
Solvent Power

Understanding the miscibility behavior of ionic liquid (IL) / monomer, IL / polymer and IL / nanoparticle mixtures is critical for the use of ILs as green solvents in polymerization processes, and to rationalize recent observations concerning the superior solubility of some proteins in ILs when compared to standard solvents. In this work, the most relevant results obtained in terms of a three-component Flory-Huggins theory concerning the “Extra Solvent Power, ESP” of ILs when compared to traditional non-ionic solvents for monomeric solutes (case I), linear polymers (case II) and globular nanoparticles (case III) are presented. Moreover, useful ESP maps are drawn for the first time for IL mixtures corresponding to case I, II and III. Finally, a potential pathway to improve the miscibility of non-ionic polymers in ILs is also proposed.

Brønsted acidic ionic liquid-catalyzed dehydrative formation of isosorbide from sorbitol: introduction of a continuous process

2017 ◽  
Vol 7 (10) ◽  
pp. 2065-2073 ◽  
Author(s):  
Jie Deng ◽  
Bao-Hua Xu ◽  
Yao-Feng Wang ◽  
Xian-En Mo ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Continuous Process ◽  
Efficient Synthesis ◽  
Acidic Ionic Liquid ◽  
Highly Efficient ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
First Time

A highly efficient synthesis of isosorbide from sorbitol was developed using Brønsted acidic ionic liquids (BILs) as the catalyst for the first time.

scholarly journals Efficient transformation of CO2 to cyclic carbonates using bifunctional protic ionic liquids under mild conditions

2019 ◽  
Vol 21 (12) ◽  
pp. 3456-3463 ◽  
Author(s):  
Xianglei Meng ◽  
Zhaoyang Ju ◽  
Suojiang Zhang ◽  
Xiaodong Liang ◽  
Nicolas von Solms ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
High Activity ◽  
Cyclic Carbonates ◽  
Protic Ionic Liquids ◽  
Mild Conditions ◽  
Efficient Transformation ◽  
Mild Temperature

Bifunctional protic ionic liquids were prepared and they showed high activity for conversion of CO2 with epoxides at mild temperature (30–50 °C) and 1 bar CO2.

Catalytic effect of different hydroxyl-functionalised ionic liquids together with Zn(II) complex in the synthesis of cyclic carbonates from CO2

2021 ◽  
Vol 499 ◽  
pp. 111292
Author(s):  
Ana B. Paninho ◽  
Andreia Forte ◽  
Malgorzata E. Zakrzewska ◽  
Kamran T. Mahmudov ◽  
Armando J.L. Pombeiro ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Catalytic Effect ◽  
Cyclic Carbonates

scholarly journals Highly efficient synthesis of alkylidene cyclic carbonates from low concentration CO2 using hydroxyl and azolate dual functionalized ionic liquids

2021 ◽  
Author(s):  
Guiling Shi ◽  
Ran Zhai ◽  
Haoran Li ◽  
Congmin Wang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic System ◽  
Cyclic Carbonates ◽  
Efficient Synthesis ◽  
Excellent Performance ◽  
Functionalized Ionic Liquid ◽  
Low Concentration ◽  
Propargylic Alcohols ◽  
Highly Efficient

A dual functionalized ionic liquid catalytic system was developed for the reaction between CO2 and propargylic alcohols, and exhibited excellent performance and good reusability, even under a low concentration of CO2 in a gram-scale reaction.

Eco-friendly acetylcholine-carboxylate bio-ionic liquids for controllable N-methylation and N-formylation using ambient CO2 at low temperatures

2019 ◽  
Vol 21 (3) ◽  
pp. 567-577 ◽  
Author(s):  
Wenfeng Zhao ◽  
Xiaoping Chi ◽  
Hu Li ◽  
Jian He ◽  
Jingxuan Long ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic System ◽  
Low Temperatures ◽  
Mild Conditions ◽  
Ambient Co2

A sustainable and recyclable ionic liquid catalytic system is developed to be efficient in N-methylation or N-formylation of amines with CO2 under mild conditions.

scholarly journals Access to cross-linked chitosans by exploiting CO2 and the double solvent-catalytic effect of ionic liquids

2017 ◽  
Vol 19 (5) ◽  
pp. 1235-1239 ◽  
Author(s):  
Andrea Mezzetta ◽  
Lorenzo Guazzelli ◽  
Cinzia Chiappe
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic Effect ◽  
Component System

Fist synthesis of ureido cross-linked chitosans employing the CO2–chitosan–ionic liquid three component system as a way to prepare new biomaterials.

A solvent-free protocol for the green synthesis of arylalkylidene rhodanines in a task-specific ionic liquid

2010 ◽  
Vol 88 (6) ◽  
pp. 514-518 ◽  
Author(s):  
Abdolhamid Alizadeh ◽  
Mohammad M. Khodaei ◽  
Ali Eshghi
Keyword(s):  
Ionic Liquid ◽  
Green Synthesis ◽  
Carbonyl Compounds ◽  
Catalytic Effect ◽  
Knoevenagel Condensation ◽  
Solvent Free ◽  
Detailed Mechanism ◽  
Solvent Free Conditions ◽  
First Time ◽  
Task Specific Ionic Liquid

2-Hydroxyethylammonium formate acts as a task-specific ionic liquid (TSIL) for the Knoevenagel condensation of carbonyl compounds with rhodanine to afford arylalkylidene rhodanines under solvent-free conditions and in good-to-excellent yields. Additionally, compared with those in organic solvents, the yields obtained in the presence of our ionic liquid (IL) were significantly increased. The detailed mechanism of the catalytic effect of TSIL is also reported for the first time.

Sign in / Sign up

Export Citation Format

Share Document