Influence of acidic strength on the catalytic activity of Brønsted acidic ionic liquids on synthesizing cyclic carbonate from carbon dioxide and epoxide

2014 ◽  
Vol 67 ◽  
pp. 285-290 ◽  
Author(s):  
Lin-Fei Xiao ◽  
Dong-Wei Lv ◽  
Dan Su ◽  
Wei Wu ◽  
Hong-Feng Li
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Cyclic Carbonate ◽  
Acidic Ionic Liquids

Protic pyrazolium ionic liquids for efficient chemical fixation of CO2: design, synthesis, and catalysis

2018 ◽  
Vol 3 (2) ◽  
pp. 348-356 ◽  
Author(s):  
Danning Zheng ◽  
Tengfei Wang ◽  
Xinrui Zhu ◽  
Ci Chen ◽  
Tiegang Ren ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Propylene Oxide ◽  
Coupling Reaction ◽  
Chemical Fixation ◽  
Design Synthesis

Three new protic pyrazolium ILs, HTMPzBr, HMM3PzBr, and HMM5PzBr, have been synthesized to explore their catalytic activity for the coupling reaction of carbon dioxide and propylene oxide.

Functionalized phosphonium-based ionic liquids as efficient catalysts for the synthesis of cyclic carbonate from expoxides and carbon dioxide

2014 ◽  
Vol 470 ◽  
pp. 183-188 ◽  
Author(s):  
Dai Wei-Li ◽  
Jin Bi ◽  
Luo Sheng-Lian ◽  
Luo Xu-Biao ◽  
Tu Xin-Man ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Cyclic Carbonate

Understanding the role of hydrogen bonding in Brønsted acidic ionic liquid-catalyzed transesterification: a combined theoretical and experimental investigation

2016 ◽  
Vol 18 (48) ◽  
pp. 32723-32734 ◽  
Author(s):  
Kaixin Li ◽  
Yibo Yan ◽  
Jun Zhao ◽  
Junxi Lei ◽  
Xinli Jia ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Ionic Liquid ◽  
Hydrogen Bonding ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
Hydrogen Bonding Networks

The intra- and inter-hydrogen bonding networks that govern the catalytic activity of Brønsted acidic ionic liquids were identified.

Preparation of Biodiesel from Tung Oil Catalyzed by Sulfonic-Functional Brǒnsted Acidic Ionic Liquids

2011 ◽  
Vol 314-316 ◽  
pp. 1459-1462 ◽  
Author(s):  
Jian Hui Zhou ◽  
Yu Jing Lu ◽  
Bao Hua Huang ◽  
Yan Ping Huo ◽  
Kun Zhang
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Acid Group ◽  
Sulfonic Acid Group ◽  
Tung Oil ◽  
Acidic Ionic Liquids ◽  
Good Catalytic Activity

Preparation of biodiesel from tung oil catalyzed by five Brǒnsted acidic ionic liquids (ILs) with propyl sulfonic acid group was investigated. These ILs show good catalytic activity for the transeserification of tung oil. Among these ILs, [C3SO3Hmim]HSO4 showed a highest catalytic activity. In addition, these ionic liquids had a good reusability and could be easily separated from the biodiesel.

Properties and catalytic activity of magnetic and acidic ionic liquids: Experimental and molecular simulation

2014 ◽  
Vol 105 ◽  
pp. 300-307 ◽  
Author(s):  
Cunshan Zhou ◽  
Xiaojie Yu ◽  
Haile Ma ◽  
Xingyi Huang ◽  
Henan Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Molecular Simulation ◽  
Acidic Ionic Liquids

High Efficacy Glycerol Acetalization with silica gel immobilized Bronsted acidic ionic liquids catalyst - Preparation and comprehending the counter-anion effect on the catalytic activity

2021 ◽  
Author(s):  
Shalini Shashni ◽  
Vasundhara Singh ◽  
Amrit Pal Toor
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Silica Gel ◽  
Catalyst Preparation ◽  
High Efficacy ◽  
Counter Anion ◽  
Anion Effect ◽  
Acidic Ionic Liquids ◽  
Mesoporous Silica Gel ◽  
Nano Catalysts

The subsequent imidazolium sulfonate zwitterions (ZIs) with unconventional counter-anions were used to fabricate a series of mesoporous silica gel immobilized Bronsted acidic ionic liquids (SG@BAILs) nano-catalysts. In comparison to traditional...

scholarly journals Brønsted acidic ionic liquids for cellulose hydrolysis in an aqueous medium: structural effects on acidity and glucose yield

RSC Advances ◽  
2018 ◽  
Vol 8 (26) ◽  
pp. 14623-14632 ◽  
Author(s):  
Shiori Suzuki ◽  
Yuko Takeoka ◽  
Masahiro Rikukawa ◽  
Masahiro Yoshizawa-Fujita
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Theoretical Calculations ◽  
Cellulose Hydrolysis ◽  
Acidity Function ◽  
Structural Effects ◽  
Glucose Yield ◽  
Acidic Ionic Liquids ◽  
Hammett Acidity Function

Using Brønsted acidic ionic liquids with various structures, their acidic catalytic activity for cellulose hydrolysis assisted by microwave irradiation was assessed using the Hammett acidity function (H0) and theoretical calculations.

Synthesis, Characterization of Novel Hexamethyleneiminium-Based Ionic Liquids and their Application in Esterification

2011 ◽  
Vol 233-235 ◽  
pp. 155-159
Author(s):  
Gong Li ◽  
Fei Ke Wu ◽  
Hui Juan Tong
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Citric Acid ◽  
Hydrogen Sulfate ◽  
Catalytic Activities ◽  
H Nmr ◽  
Acidic Ionic Liquids ◽  
Ft Ir

Three novel Brønsted acidic ionic liquids (ILs), 1-(3-sulfopropyl) hexamethyleneiminium hydrogen sulfate ([HMIPS]HSO4), 1-(3-sulfopropyl) hexamethyleneiminium tosilate ([HMIPS]OTs) and 1-hexamethyleneiminium hydrogen sulfate([HMI]HSO4), were synthesized and characterized by1H NMR, FT-IR and DSC-TG. Their catalytic activities for the esterification of citric acid with n-butanol were examined and compared with the imidazolium-based ILs. The results showed that the hexamethyleneiminium-based ILs exhibits excellent catalytic activity. By using [HMIPS]HSO4as the catalyst, the yield of tributyl citrate reached 97.5%. Furthermore, the catalysts were reused at least 10 times without significant decrease in activity

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