Evaluation of Thermophysical Properties of Functionalized Imidazolium Thiocyanate Based Ionic Liquids

Gonfa, Girma; Bustam, Mohamad Azmi; Muhammad, Nawshad; Khan, Amir Sada

doi:10.1021/acs.iecr.5b03707

Cited by 49 publications

(36 citation statements)

References 45 publications

(105 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the density measured for 25 mg/ml to 45 mg/ml of ATP concentration, for only 45 mg/ml ATP concentration in water and for pure acetate based ionic liquid from 25°C to 75°C (Table D.1, Table D.2, Table D.3, Table D.4, Table D.5, Table E and Table F), the molecular volume data showed an increase with respect to an increase in temperature. Gonfa, et al, (2015) concluded results over molecular volume similar to our findings.…”

Section: Molecular Volumesupporting

confidence: 91%

See 1 more Smart Citation

Physiochemical Properties of Protic Ionic Liquids Mixed with Adenosine Triphosphate

Idrees¹,

Awan²,

Muhammad³

2018

mmr

View full text Add to dashboard Cite

properties of protic ionic piquids mixed with adenosine triphosphate (ATP)/water mixture, 8(1): 1-22 (doi: 10.5376/mmr.2018.08.0001) Abstract The densities of adenosine triphosphate/water/1-H-3-methyl imidazolium acetate mixture and adenosine triphosphate/water/1-H-3-methyl imidazolium hydrogen sulphate mixture at five different concentrations of adenosine triphosphate as 25 mg/ml to 45 mg/ml were estimated respectively. Ionic liquids used were 1-H-3-methyl imidazolium acetate and 1-H-3-methyl imidazolium hydrogen sulphate. The density of ionic liquids was measured from 298.15 K and 348.15 K respectively, using Rudolph Research Analytical Density Meter. The density for adenosine triphosphate and water was measured from 298.15 K and 343.15 K for 45 mg/ml concentration of adenosine triphosphate (ATP) respectively. The main objective was to access the suitable method for CO 2 capturing in order to reduce the CO 2 emission level up to 90% that may be helpful for reducing global warming. Our study of physiochemical properties of mixture of protic ionic liquids along with ATP was a novel work involving CO 2 capturing as a primary goal. Our study is a door step to help the worldwide researchers in understanding the basic properties of our used mixture however, its effects on CO 2 capturing and other purposes yet unknown. Adenosine triphosphate transports chemical energy within the cells for metabolism and is found to absorb carbon dioxide when used in dissolved form in water and is very effective when used with ionic liquids for CO 2 capturing. Therefore, the purpose of our study was CO 2 capturing and the best possible chemical for this propose. It was found that the calculated excess molar volumes were positive for a given composition range of ATP. The properties of thermal expansion coefficients, molar volumes, molecular volumes and standard entropy showed an increasing trend with increase in temperature. On the other hand, lattice potential energy showed a decrease in the graphical trend with the increasing temperature while the densities were found decreasing linearly with increase in temperature.

show abstract

Section: Molecular Volumesupporting

confidence: 91%

“…Table B, Table C), the molecular volume data showed an increase with respect to an increase in temperature. Gonfa, et al, (2015) concluded findings over molecular volume similar to our work. …”

Section: Coefficient Of Thermal Expansionsupporting

confidence: 91%

Physiochemical Properties of Protic Ionic Liquids Mixed with Adenosine Triphosphate

Idrees¹,

Awan²,

Muhammad³

2018

mmr

View full text Add to dashboard Cite

show abstract

“…Selection of cations from the imidazolium, pyrrolidininium, and ammonium classes along with the thiocyanate anion resulted in fifteen ILs as reported in Table . The preparation of these ILs is well established in literature . The general criterion of dehydrogenation of AB is the disruption of dihydrogen bonding to suppress induction period.…”

Section: Resultsmentioning

confidence: 99%

“…1‐Ethyl‐3‐methylimidazolium thiocyanate ([EMIM][SCN], ≥95% purity), AB (97% purity), and EDAB (96% purity) were purchased from Sigma‐Aldrich. The [EMIM][SCN] was purified using ethyl acetate and diethyl ether and then dried at 48°C at a vacuum of 0.1 pa for 2 days . Later 1 H NMR analysis was performed to check the purity of IL.…”

Section: Methodsmentioning

confidence: 99%

Effect of thiocyanate‐based ionic liquids on the dehydrogenation of amine boranes: Experimental and molecular modeling studies

Kundu

Chakma

Pugazhenthi

et al. 2019

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

The present investigation reports the effect of thiocyanate-based ionic liquid (IL) on the thermal dehydrogenation of amine boranes. Fifteen ILs based on thiocyanate anion comprising cations from imidazolium, pyrrolidinium, and ammonium family were screened by a priori prediction of infinite dilution activity coefficient using the quantum chemical-based conductor-like screening model segment activity coefficient method. The IL with the highest predicted solubility of amine boranes converged to 1-ethyl-3-methylimidazolium thiocyanate ([EMIM] [SCN]) that was then used for the dehydrogenation reaction. In the IL medium, ammonia borane (AB) and ethylene diamine bisborane (EDAB) were found to produce~1.64 equivalent of hydrogen with an induction period of 60 min and~2.37 equivalent of hydrogen having an induction period of 30 min, respectively. It was observed that the mixture of AB and EDAB in [EMIM][SCN] produced prolonged induction period of 210 min. After 240 min, the mixed amine boranes only produce 0.43 equivalent of H 2 . To elucidate this slow dynamics, Density Functional Theory (DFT) optimized geometries followed by the natural bond orbital analysis revealed the formation of hydrogen bond between IL and amine borane moiety. Further, the presence of the stronger dihydrogen bond among the protic and hydridic hydrogens was also observed in AB + EDAB/[EMIM][SCN] system, resulting in longer induction period for dehydrogenation. KEYWORDS amine borane, boron NMR, natural bond orbital, thiocyanate ionic liquid

show abstract

“…ILs show excellent thermal and electrical stability. [6][7][8][9] The knowledge of interactions between ILs and molecular solvents is essential for industry and research [10][11][12] for designing a group of alternative solvents for various applications. Addition of molecular solvents to ILs strongly affects various properties such as density, viscosity, and conductivity.…”

Section: Introductionmentioning

confidence: 99%

Nanostructure domains, voids, and low-frequency spectra in binary mixtures of N,N-dimethylacetamide and ionic liquids with varying cationic size

Reddy

Mallik

2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

Evaluation of Thermophysical Properties of Functionalized Imidazolium Thiocyanate Based Ionic Liquids

Cited by 49 publications

References 45 publications

Physiochemical Properties of Protic Ionic Liquids Mixed with Adenosine Triphosphate

Physiochemical Properties of Protic Ionic Liquids Mixed with Adenosine Triphosphate

Effect of thiocyanate‐based ionic liquids on the dehydrogenation of amine boranes: Experimental and molecular modeling studies

Nanostructure domains, voids, and low-frequency spectra in binary mixtures of N,N-dimethylacetamide and ionic liquids with varying cationic size

Contact Info

Product

Resources

About