Environmentally benign perfluorooctanesulfonate alternatives using a Zn/CuI mediated Michael-type addition in imidazolium ionic liquids

2014 ◽  
Vol 16 (5) ◽  
pp. 2406-2410 ◽  
Author(s):  
B. V. D. Vijaykumar ◽  
B. Premkumar ◽  
Kiwan Jang ◽  
Bong-In Choi ◽  
J. R. Falck ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Environmentally Benign ◽  
Imidazolium Ionic Liquids ◽  
Michael Type Addition ◽  
Perfluorooctanesulfonic Acid

Michael-type addition in imidazolium ionic liquids for the synthesis of bio-degradable and efficient alternatives to perfluorooctanesulfonic acid.

Microwave Assisted Amidation of 5-Aminoisophtalic Acid Dimethyl Ester Catalyzed by Imidazolium Ionic Liquids

2021 ◽  
Vol 874 ◽  
pp. 75-80
Author(s):  
Anita Alni ◽  
Alyssa Pratiwi Putri
Keyword(s):  
Ionic Liquids ◽  
Microwave Radiation ◽  
Biological Activities ◽  
Dimethyl Ester ◽  
Living System ◽  
Environmentally Benign ◽  
Imidazolium Ionic Liquids ◽  
Suitable Material ◽  
Acid Dimethyl Ester ◽  
Benign Synthesis

Amide functionalities present in living system as peptides and possess various biological role. Many synthetic amides also possess biological activities due to the possibility of interaction with cellular liquids such as those compounds useful as a contrast agent in radiographic method. Synthesis of amides from the carboxylic acid or derivatives normally require heating and catalyst. In this report, an environmentally benign synthesis of amide was carried out utilizing microwave radiation and catalyzed by imidazolium ionic liquids (BMIMCl). Microwave radiation provided efficient heating through activation of chemical bonds instead of conventional conductivity methods hence increasing the rate of reactions. Ionic liquids were suitable material in this synthesis due to non-volatile nature as well as stability under high temperature and microwave heating. Furthermore, ionic liquids are tunable material that can be designed for the specific synthesis and functioned as a catalyst. The optimum condition for coupling of 5-Amino-isophthalic acid dimethyl ester with an amino diol was found at 80 °C, 90 minutes, under radiation of microwave at the power of 300 Watt. The product was obtained at 38.46% yield. Furthermore, the methodology was applied to synthesis radiographic material and was successful to obtain product with 48.78% yield. The products were characterized by NMR spectroscopy.

scholarly journals Carbon dioxide capture using water-imidazolium ionic liquids-amines ternary systems

2021 ◽  
Vol 105 ◽  
pp. 103210
Author(s):  
Mariusz Zalewski ◽  
Tomasz Krawczyk ◽  
Agnieszka Siewniak ◽  
Aleksander Sobolewski
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Carbon Dioxide Capture ◽  
Ternary Systems ◽  
Imidazolium Ionic Liquids

Degradation of imidazolium ionic liquids in a thermally activated persulfate system

2021 ◽  
Vol 412 ◽  
pp. 128624
Author(s):  
Tian-Lin Ren ◽  
Xi-Wen Ma ◽  
Xiao-Qiong Wu ◽  
Li Yuan ◽  
Yang-Li Lai ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Imidazolium Ionic Liquids ◽  
Thermally Activated ◽  
Activated Persulfate

α−Fe2O3/rGO cooperated with tri-alkyl-substituted-imidazolium ionic liquids for enhancing oxygen sensing

2021 ◽  
Vol 341 ◽  
pp. 130029
Author(s):  
Wenyan Yin ◽  
Khaled Tawfik Alali ◽  
Milin Zhang ◽  
Jingyuan Liu ◽  
Dalei Song ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Oxygen Sensing ◽  
Imidazolium Ionic Liquids

Separation of phenols from oils using deep eutectic solvents and ionic liquids

2020 ◽  
Vol 92 (10) ◽  
pp. 1717-1731
Author(s):  
Yucui Hou ◽  
Zhi Feng ◽  
Jaime Ruben Sossa Cuellar ◽  
Weize Wu
Keyword(s):  
Ionic Liquids ◽  
Phenolic Compounds ◽  
High Efficiency ◽  
Deep Eutectic Solvents ◽  
Environmentally Benign ◽  
Organic Chemical ◽  
Environmental Friendliness ◽  
Oil Mixtures ◽  
Organic Chemical Industry

AbstractPhenolic compounds are important basic materials for the organic chemical industry, such as pesticides, medicines and preservatives. Phenolic compounds can be obtained from biomass, coal and petroleum via pyrolysis and liquefaction, but they are mixtures in oil. The traditional methods to separate phenols from oil using alkaline washing are not environmentally benign. To solve the problems, deep eutectic solvents (DESs) and ionic liquids (ILs) have been developed to separate phenols from oil, which shows high efficiency and environmental friendliness. In this article, we summarized the properties of DESs and ILs and the applications of DESs and ILs in the separation of phenols and oil. There are two ways in which DESs and ILs are used in these applications: (1) DESs formed in situ using different hydrogen bonding acceptors including quaternary ammonium salts, zwitterions, imidazoles and amides; (2) DESs and ILs used as extractants. The effect of water on the separation, mass transfer dynamics in the separation process, removal of neutral oil entrained in DESs, phase diagrams of phenol + oil + extractant during extraction, are also discussed. In the last, we analyze general trends for the separation and evaluate the problematic or challenging aspects in the separation of phenols from oil mixtures.

Sign in / Sign up

Export Citation Format

Share Document