Influence of temperature and alkyl chain length on physicochemical properties of trihexyl- and trioctylammonium based protic ionic liquids

2019 ◽  
Vol 133 ◽  
pp. 170-180 ◽  
Author(s):  
Dasthaiah Keshapolla ◽  
Kancharla Srinivasarao ◽  
Ramesh L. Gardas
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Protic Ionic Liquids ◽  
Influence Of Temperature

Protic Ionic Liquids Based on the Alkyl-Imidazolium Cation: Effect of the Alkyl Chain Length on Structure and Dynamics

2019 ◽  
Vol 123 (18) ◽  
pp. 4044-4054 ◽  
Author(s):  
Iqbaal Abdurrokhman ◽  
Khalid Elamin ◽  
Olesia Danyliv ◽  
Mohammad Hasani ◽  
Jan Swenson ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Protic Ionic Liquids ◽  
Imidazolium Cation ◽  
Structure And Dynamics ◽  
Cation Effect

scholarly journals Effect of Alkyl Chain Length in Anions on the Physicochemical Properties of Cellulose-Dissolving Protic Ionic Liquids

2019 ◽  
Vol 72 (2) ◽  
pp. 55 ◽  
Author(s):  
Hideki Hanabusa ◽  
Yuko Takeoka ◽  
Masahiro Rikukawa ◽  
Masahiro Yoshizawa-Fujita
Keyword(s):  
Physicochemical Properties ◽  
Chain Length ◽  
Alkyl Chain ◽  
Ionic Conductivities ◽  
Alkyl Chain Length ◽  
Cellulose Dissolution ◽  
Protic Ionic Liquids ◽  
Scanning Calorimetry ◽  
Protic Ionic Liquid ◽  
Chemical Structures

A protic ionic liquid (PIL) composed of 1,8-diazabicyclo[5.4.0]-undec-7-ene (DBU) and acetic acid can dissolve cellulose under mild conditions and catalyse its transesterification. To investigate the relationship between physicochemical properties and chemical structures, PILs composed of DBU and carboxylic acids with varying alkyl chain lengths were prepared as cellulose-dissolving solvents. The thermal behaviours of the PILs were analysed by thermogravimetry and differential scanning calorimetry, and their viscosities, ionic conductivities, and cellulose-dissolution abilities were determined. The effect of the alkyl chain length in the carboxylate ion on the physicochemical properties of the PILs was investigated. With increasing chain length, the thermal stability and ionic conductivity increased, whereas the melting point (Tm), glass-transition temperature (Tg), cellulose solubility, and viscosity decreased. The cellulose solubility increased as the difference between the pKa values of the DBU and carboxylic acid (ΔpKa) increased. In addition, the cellulose solubility increased with the increasing density of the PIL. It was revealed that PILs with a high ΔpKa value and a carboxylate ion with a short alkyl chain are suitable for cellulose dissolution.

Effect of alkyl chain length in protic ionic liquids: an AIMD perspective

2017 ◽  
Vol 115 (13) ◽  
pp. 1582-1589 ◽  
Author(s):  
M. Campetella ◽  
M. Macchiagodena ◽  
L. Gontrani ◽  
B. Kirchner
Keyword(s):  
Ionic Liquids ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Protic Ionic Liquids

Effect of alkyl chain length of protic ionic liquids on dynamic and static properties of alkylammonium nitrate/water mixtures

2021 ◽  
Vol 329 ◽  
pp. 115610
Author(s):  
Kazuyoshi Kaneko ◽  
Yuichi Izumi ◽  
Kyohei Kitawaki ◽  
Shuji Hattori ◽  
Tomoyoshi Mori ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Static Properties ◽  
Protic Ionic Liquids

Spectroscopic Study on Imidazolium-Based Ionic Liquids: Effect of Alkyl Chain Length and Anion

2012 ◽  
Vol 116 (11) ◽  
pp. 3512-3518 ◽  
Author(s):  
Enrico Binetti ◽  
Annamaria Panniello ◽  
Leonardo Triggiani ◽  
Raffaele Tommasi ◽  
Angela Agostiano ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Spectroscopic Study ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length
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