scholarly journals Towards an Understanding of the Mutual Solubilities of Water and Hydrophobic Ionic Liquids in the Presence of Salts: The Anion Effect

2009 ◽  
Vol 113 (9) ◽  
pp. 2815-2825 ◽  
Author(s):  
Luciana I. N. Tomé ◽  
Fátima R. Varanda ◽  
Mara G. Freire ◽  
Isabel M. Marrucho ◽  
João A. P. Coutinho
Keyword(s):  
Ionic Liquids ◽  
Anion Effect ◽  
Hydrophobic Ionic Liquids ◽  
Mutual Solubilities

scholarly journals Mutual solubilities between water and non-aromatic sulfonium-, ammonium- and phosphonium-hydrophobic ionic liquids

2015 ◽  
Vol 17 (6) ◽  
pp. 4569-4577 ◽  
Author(s):  
Kiki A. Kurnia ◽  
Maria V. Quental ◽  
Luís M. N. B. F. Santos ◽  
Mara G. Freire ◽  
João A. P. Coutinho
Keyword(s):  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Charge Distribution ◽  
Significant Role ◽  
Hydrophobic Ionic Liquids ◽  
Mutual Solubilities

The charge distribution at the cation and further hydrogen-bonding ability plays a significant role in the solubility of non-aromatic and non-cyclic ionic liquids in water.

scholarly journals Mutual Solubilities of Water and Hydrophobic Ionic Liquids

2007 ◽  
Vol 111 (45) ◽  
pp. 13082-13089 ◽  
Author(s):  
Mara G. Freire ◽  
Catarina M. S. S. Neves ◽  
Pedro J. Carvalho ◽  
Ramesh L. Gardas ◽  
Ana M. Fernandes ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Hydrophobic Ionic Liquids ◽  
Mutual Solubilities

Ion Specific Effects on the Mutual Solubilities of Water and Hydrophobic Ionic Liquids

2009 ◽  
Vol 113 (1) ◽  
pp. 202-211 ◽  
Author(s):  
Mara G. Freire ◽  
Pedro J. Carvalho ◽  
Artur M. S. Silva ◽  
Luís M. N. B. F. Santos ◽  
Luís P. N. Rebelo ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Specific Effects ◽  
Hydrophobic Ionic Liquids ◽  
Mutual Solubilities

scholarly journals Mutual Solubilities of Water and the [Cnmim][Tf2N] Hydrophobic Ionic Liquids

2008 ◽  
Vol 112 (6) ◽  
pp. 1604-1610 ◽  
Author(s):  
Mara G. Freire ◽  
Pedro J. Carvalho ◽  
Ramesh L. Gardas ◽  
Isabel M. Marrucho ◽  
Luís M. N. B. F. Santos ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Hydrophobic Ionic Liquids ◽  
Mutual Solubilities

On the stabilization of conducting pernigraniline salt by the synthesis and oxidation of polyaniline in hydrophobic ionic liquids

2008 ◽  
Vol 10 (10) ◽  
pp. 1457 ◽  
Author(s):  
Fernanda F. C. Bazito ◽  
Leonardo T. Silveira ◽  
Roberto M. Torresi ◽  
Susana I. Córdoba de Torresi
Keyword(s):  
Ionic Liquids ◽  
Hydrophobic Ionic Liquids

ChemInform Abstract: Characterization of Hydrophilic and Hydrophobic Ionic Liquids: Alternatives to Volatile Organic Compounds for Liquid-Liquid Separations

ChemInform ◽  
2010 ◽  
Vol 33 (50) ◽  
pp. no-no
Author(s):  
Ann E. Visser ◽  
W. Matthew Reichert ◽  
Richard P. Swatloski ◽  
Heather D. Willauer ◽  
Jonathan G. Huddleston ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Abstract Characterization ◽  
Volatile Organic ◽  
Hydrophobic Ionic Liquids ◽  
Liquid Separations

scholarly journals Selective Extraction of Copper, Mercury, Silver, and Palladium Ions from Water Using Hydrophobic Ionic Liquids

2008 ◽  
Vol 47 (15) ◽  
pp. 5080-5086 ◽  
Author(s):  
Nicolas Papaiconomou ◽  
Jong-Min Lee ◽  
Justin Salminen ◽  
Moritz von Stosch ◽  
John M. Prausnitz
Keyword(s):  
Ionic Liquids ◽  
Selective Extraction ◽  
Hydrophobic Ionic Liquids

Development of Novel Shale Swelling Inhibitors Using Hydrophobic Ionic Liquids and Gemini Surfactants for Water-Based Drilling Fluids

2021 ◽  
Author(s):  
Rizwan Ahmed Khan ◽  
Mobeen Murtaza ◽  
Hafiz Mudaser Ahmad ◽  
Abdulazeez Abdulraheem ◽  
Muhammad Shahzad Kamal ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Gemini Surfactant ◽  
Drilling Fluid ◽  
Control Agent ◽  
Drilling Fluids ◽  
The Novel ◽  
Combined Solution ◽  
Hydrophobic Ionic Liquids ◽  
Inhibition Performance

Abstract In the last decade, hydrophilic Ionic liquids have been emerged as an additive in drilling fluids for clay swelling inhibition. However, the application of hydrophobic Ionic liquids as a clay swelling inhibitor have not been investigated. In this study, the combination of hydrophobic Ionic liquids and Gemini surfactant were studied to evaluate the inhibition performance. The novel combination of hydrophobic ionic liquid (Trihexyltetradecyl phosphonium bis(2,4,4-trimethyl pentyl) phosphinate) and cationic gemini surfactant (GB) was prepared by mixing various concentrations of both chemicals and then preparing water based drilling fluid using other drilling fluid additives such as rheological modifier, filtration control agent, and pH control agent. The wettability of sodium bentonite was determined by contact angle with different concentrations of combined solution. Some other experiments such as linear swelling, capillary suction test (CST) and bentonite swell index were performed to study the inhibition performance of ionic liquid. Different concentrations of novel combined ionic liquid and gemini surfactant were used to prepare the drilling fluids ranging from (0.1 to 0.5 wt.%), and their performances were compared with the base drilling fluid. The wettability results showed that novel drilling fluid having 0.1% Tpb-P - 0.5% GB wt.% concentration has a maximum contact angle indicating the highly hydrophobic surface. The linear swelling was evaluated over the time of 24 hours, and least swelling of bentonite was noticed with 0.1% Tpb-P - 0.5% GB wt.% combined solution compared to linear swelling in deionized water. Furthermore, the results of CST also suggested the improved performance of novel solution at 0.1% Tpb-P - 0.1% GB concentration. The novel combination The novel combination of hydrophobic ionic liquids and gemini surfactant has been used to formulate the drilling fluid for high temperature applications to modify the wettability and hydration properties of clay. The use of novel combined ionic liquid and gemini surfactant improves the borehole stability by adjusting the clay surface and resulted in upgraded wellbore stability.

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