A Novel and Green Method for the Synthesis of Ionic Liquids Using the Corresponding Acidic Ionic Liquid Precursors and Dialkyl Carbonate

2010 ◽  
Vol 39 (10) ◽  
pp. 1112-1113 ◽  
Author(s):  
Wenjun Xiao ◽  
Xiaoxing Wang ◽  
Qin Chen ◽  
Tinghua Wu ◽  
Ying Wu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Green Method ◽  
Acidic Ionic Liquid ◽  
Liquid Precursors ◽  
Dialkyl Carbonate

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 Mild and Efficient Tunable Brønsted Acidic Ionic Liquid Catalyzed O-Acetylation and O-Trimethylsilylation with Trimethylsilyl Acetate (TMSOAc) and Hexamethyldisilazane (HMDS)

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 825
Author(s):  
Amit Ravindra Pantawane ◽  
Mayur Thul ◽  
Yi-Jyun Lin ◽  
Michelle Lin ◽  
Wesley Lin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Visible Spectroscopy ◽  
Acidic Ionic Liquid ◽  
Post Process ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
Uv Visible ◽  
Work Up

This report discloses a mild and efficient O-acetylation using easily accessible TMSOAc as a novel acetyl reagent and O-trimethylsilylation using HMDS for various alcohols catalyzed by tunable Brønsted acidic ionic liquids (TBAILs). Imidazolium-based TBAILs were prepared by a two-step atom-economic reaction and acidities measured by using UV-visible spectroscopy. Both protections for alcohols were accomplished at room temperature with good to excellent yields, while the products and TBAILs were separated by simple work-up for O-silylation and column chromatography for O-acetylation. Notably, with the simple post-process, TBAILs catalyst in this solvent free method easily recovered and recycled several times without significant degradation.

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.

MOR zeolite supported Brønsted acidic ionic liquid: an efficient and recyclable heterogeneous catalyst for ketalization

RSC Advances ◽  
2014 ◽  
Vol 4 (24) ◽  
pp. 12160-12167 ◽  
Author(s):  
Zhang-Min Li ◽  
Yan Zhou ◽  
Duan-Jian Tao ◽  
Wei Huang ◽  
Xiang-Shu Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Heterogeneous Catalyst ◽  
Heterogeneous Catalysts ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Recyclable Heterogeneous Catalyst ◽  
Supported Ionic Liquids

In order to widen the application of ionic liquids as efficient and renewable heterogeneous catalysts, supported ionic liquids (SILs) have received considerable attention.

Brönsted acidic ionic liquid-catalyzed conversion of hemicellulose into sugars

2015 ◽  
Vol 5 (1) ◽  
pp. 531-539 ◽  
Author(s):  
Babasaheb M. Matsagar ◽  
Paresh L. Dhepe
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids

Brönsted acidic ionic liquids were synthesized, characterized and used in the conversion of assorted hemicelluloses to yield C5 sugars in 87% yield.

scholarly journals Dispersing of Petroleum Asphaltenes by Acidic Ionic Liquid and Determination by UV-Visible Spectroscopy

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Eshagh Rezaee Nezhad ◽  
Fariba Heidarizadeh ◽  
Sami Sajjadifar ◽  
Zahra Abbasi
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Visible Spectroscopy ◽  
Acidic Ionic Liquid ◽  
Petroleum Asphaltenes ◽  
Effect Of Water ◽  
Acidic Ionic Liquids ◽  
Stirring Time ◽  
Uv Visible

Nowadays, constructing a mechanism to prevent the aggregation petroleum asphaltenes by the use of new acidic ionic liquids has become of fundamental importance. In this research, 3-(2-carboxybenzoyl)-1-methyl-1H-imidazol-3-ium chloride ([CbMIM] [Cl]) and other ionic liquids such as [CbMIM]BF4, [HMIM]Cl, [BMIM]Br, and [HMIM]HSO4 were tested. It should be noted that during the experiment the presence of the acidic ionic liquid moiety enhanced interactions between asphaltenes and acidic ionic liquids and it greatly limited asphaltene aggregation. We considered parameters such as temperature, amount of dispersant, effect of water: toluene ratio, the stirring time and effects of other ionic liquids, and determination of concentration of petroleum asphaltenes after dispersing by acidic ionic liquid under various parameters using UV-Visible spectroscopy.

Carbon materialization of ionic liquids: from solvents to materials

2015 ◽  
Vol 2 (2) ◽  
pp. 168-197 ◽  
Author(s):  
Shiguo Zhang ◽  
Kaoru Dokko ◽  
Masayoshi Watanabe
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Carbon Materials ◽  
Future Trends ◽  
Liquid Precursors ◽  
Potential Applications

Synthesis, characteristics, porous design, and potential applications of novel carbon materials derived from ionic liquid precursors have been reviewed, including future trends and prospects in this direction.

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