scholarly journals Tunable aryl imidazolium ionic liquids (TAIILs) as environmentally benign catalysts for the esterification of fatty acids to biodiesel fuel

2021 ◽  
Vol 149 ◽  
pp. 106243
Author(s):  
Mayur Thul ◽  
Amit Pantawane ◽  
Wesley Lin ◽  
Yi-Jyun Lin ◽  
Po-Fang Su ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Ionic Liquids ◽  
Environmentally Benign ◽  
Biodiesel Fuel ◽  
Imidazolium Ionic Liquids

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.

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.

Evaluation of catalytic activity of two functionalized imidazolium ionic liquids for biodiesel fuel production by a two-stage process

2013 ◽  
Vol 89 (7) ◽  
pp. 998-1006 ◽  
Author(s):  
Yasir A. Elsheikh ◽  
Zakaria Man ◽  
Azmi Bustam ◽  
Suzana Yusup ◽  
Faheem H. Akhtar ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Biodiesel Fuel ◽  
Fuel Production ◽  
Two Stage ◽  
Imidazolium Ionic Liquids ◽  
Stage Process

scholarly journals Bicarbonate for microalgae cultivation: a case study in a chlorophyte, Tetradesmus wisconsinensis isolated from a Norwegian lake

2021 ◽  
Author(s):  
Ikumi Umetani ◽  
Eshetu Janka ◽  
Michal Sposób ◽  
Chris J. Hulatt ◽  
Synne Kleiven ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Lipid Production ◽  
Cetane Number ◽  
Fluorescence Analysis ◽  
Dry Weight ◽  
Maximum Growth ◽  
Biodiesel Fuel ◽  
Fatty Acid Production ◽  
Total Fatty Acids

AbstractBicarbonate was evaluated as an alternative carbon source for a green microalga, Tetradesmus wisconsinensis, isolated from Lake Norsjø in Norway. Photosynthesis, growth, and lipid production were studied using four inorganic carbon regimes: (1) aeration only, (2) 20 mM NaHCO3, (3) 5% (v/v) CO2 gas, and (4) combination of 20 mM NaHCO3 and 5% CO2. Variable chlorophyll a fluorescence analysis revealed that the bicarbonate treatment supported effective photosynthesis, while the CO2 treatment led to inefficient photosynthetic activity with a PSII maximum quantum yield as low as 0.31. Conversely, bicarbonate and CO2 treatments gave similar biomass and fatty acid production. The maximum growth rate, the final cell dry weight, and total fatty acids under the bicarbonate-only treatment were 0.33 (± 0.06) day−1, 673 (± 124) mg L−1 and 75 (± 5) mg g−1 dry biomass, respectively. The most abundant fatty acid components were α-linolenic acid and polyunsaturated fatty acids constituting 69% of the total fatty acids. The fatty acid profile eventuated in unsuitable biodiesel fuel properties such as high degree of unsaturation and low cetane number; however, it would be relevant for food and feed applications. We concluded that bicarbonate could give healthy growth and comparative product yields as CO2.

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
Sign in / Sign up

Export Citation Format

Share Document