Effects of [Bmim][Cl] ionic liquid with different concentrations on the functional groups and wettability of coal

2019 ◽  
Vol 30 (3) ◽  
pp. 610-624 ◽  
Author(s):  
Ni Guanhua ◽  
Li Zhao ◽  
Sun Qian ◽  
Li Shang ◽  
Dong Kai
Keyword(s):  
Ionic Liquid ◽  
Functional Groups

Design and preparation of a cellulose-based adsorbent modified by imidazolium ionic liquid functional groups and their studies on anionic dye adsorption

Cellulose ◽  
2018 ◽  
Vol 25 (6) ◽  
pp. 3557-3569 ◽  
Author(s):  
Su-Feng Zhang ◽  
Miao-Xiu Yang ◽  
Li-Wei Qian ◽  
Chen Hou ◽  
Rui-Hua Tang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Functional Groups ◽  
Dye Adsorption ◽  
Imidazolium Ionic Liquid ◽  
Anionic Dye

Flotation of quartz using ionic liquid collectors with different functional groups and varying chain lengths

2016 ◽  
Vol 95 ◽  
pp. 107-112 ◽  
Author(s):  
Hrushikesh Sahoo ◽  
Swagat S. Rath ◽  
Bisweswar Das ◽  
Barada Kanta Mishra
Keyword(s):  
Ionic Liquid ◽  
Functional Groups ◽  
Chain Lengths

Study of Ionic Liquids (AIL and PIL) Viscosity and its Functional Groups under Heat Treatment on Cutting Tool Surface Using Fourier-Transform Infrared Spectroscopy (FTIR)

2020 ◽  
Vol 981 ◽  
pp. 98-103
Author(s):  
Mona Alis Md. Yasser ◽  
Zaidi Embong ◽  
Erween Abdul Rahim ◽  
Amiril Sahab Abdullah Sani ◽  
Kamaruddin Kamdani
Keyword(s):  
Heat Treatment ◽  
Ionic Liquid ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Functional Groups ◽  
Cutting Tool ◽  
Fourier Transform Infrared ◽  
Nitrile Group ◽  
Tool Surface

This study was conducted to investigate the efficiency of Minimum Quantity Lubrication (MQL) technique by using Modified Jatropha Oil (MJO) bio-based lubricant with the presence of 10% Ammonium Ionic Liquid (MJO+AIL10%) and 1% Phosphonium Ionic Liquid (MJO+PIL1%) additives respectively at various temperature of 200 °C, 300 °C and 400 °C heat treatment to determine the ability to exhibit corrosion and wear throughout the process. Fourier-Transform Infrared Spectroscopy (FTIR) analysis revealed prominent peaks of functional groups in these bio-lubricants; esters (C-O) and (C=O), alkanes (C-H), hydroxide (O-H), and nitrile groups deposited on the cutting tool surface. Initially, nitrile group is detected on cutting tool surface without lubricants at 2200 to 2300 absorption band reduced to lower intensity and most likely concealed by MJO+AIL10% compared to MJO+PIL1% where the nitrile group remains reflected in FTIR spectrum. In this work, it is proved that MJO+AIL10% has higher viscosity as compared to MJO+PIL1%. in the context of functional groups and supported the previous study on MJO+AIL10% as corrosion inhibitor.

Study on Surface Tension and Displacement Efficiency of Ionic Liquid Surfactants Containing Amine Functional Groups

2014 ◽  
Vol 484-485 ◽  
pp. 66-69
Author(s):  
Xiu Li Zhao ◽  
Chang Bao Zhang ◽  
Cheng Chen ◽  
Guo Qiao Li ◽  
Da Liu
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Functional Groups ◽  
Water Flooding ◽  
Displacement Efficiency ◽  
Oil Displacement ◽  
Wave Numbers ◽  
Infrared Spectrometer

Description is given to preparation of three ionic liquid surfactants containing amine functional groups, characterization of their functional groups using the infrared spectrometer, determination of their surface tension and the oil displacement test in this paper to investigate the effect of alkane branch chains with different carbon numbers on the surface tension and the displacement efficiency. The result shows that, the surfactants exhibit the structural characteristic of the ionic liquid as the characteristic absorption peaks occur on C-N and C-H of the imidazole rings at the wave numbers of 1338cm-1, 1234cm-1, 1465cm-1 and 3142cm-1, respectively. The surface tension isothermal curves and the oil displacement test proved that the ionic liquid imidazole surfactants with shorter-chain groups are more active on surface, with the minimal surface tension up to 32.5 mN/m, and led to higher displacement efficiency, increasing by 3.3% at the concentration of 1000mg/L compared with the water flooding.

scholarly journals Effect of Increased Ionic Liquid Uptake via Thermal Annealing on Mechanical Properties of Polyimide-Poly(ethylene glycol) Segmented Block Copolymer Membranes

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2143
Author(s):  
Gokcen A. Ciftcioglu ◽  
Curtis W. Frank
Keyword(s):  
Ionic Liquid ◽  
Block Copolymer ◽  
Ethylene Glycol ◽  
Functional Groups ◽  
Water Retention ◽  
Proton Exchange ◽  
Poly Ethylene Glycol ◽  
Practical Applications ◽  
Different Temperatures ◽  
Poly Ethylene

Proton exchange membranes (PEMs) suffer performance degradation under certain conditions—temperatures greater than 80 °C, relative humidity less than 50%, and water retention less than 22%. Novel materials are needed that have improved water retention, stability at higher temperatures, flexibility, conductivity, and the ability to function at low humidity. This work focuses on polyimide-poly(ethylene glycol) (PI-PEG) segmented block copolymer (SBC) membranes with high conductivity and mechanical strength. Membranes were prepared with one of two ionic liquids (ILs), either ethylammonium nitrate (EAN) or propylammonium nitrate (PAN), incorporated within the membrane structure to enhance the proton exchange capability. Ionic liquid uptake capacities were compared for two different temperatures, 25 and 60 °C. Then, conductivities were measured for a series of combinations of undoped or doped unannealed and undoped or doped annealed membranes. Stress and strain tests were performed for unannealed and thermally annealed undoped membranes. Later, these experiments were repeated for doped unannealed and thermally annealed. Mechanical and conductivity data were interpreted in the context of prior small angle X-ray scattering (SAXS) studies on similar materials. We have shown that varying the compositions of polyimide-poly(ethylene glycol) (PI-PEG) SBCs allowed the morphology in the system to be tuned. Since polyimides (PI) are made from the condensation of dianhydrides and diamines, this was accomplished using components having different functional groups. Dianhydrides having either fluorinated or oxygenated functional groups and diamines having either fluorinated or oxygenated diamines were used as well as mixtures of these species. Changing the morphology by creating macrophase separation elevated the IL uptake capacities, and in turn, increased their conductivities by a factor of three or more compared to Nafion 115. The stiffness of the membranes synthesized in this work was comparable to Nafion 115 and, thus, sufficient for practical applications.

Influence of oligo(ethylene oxide) substituents on pyrrolidinium-based ionic liquid properties, Li+ solvation and transport

2016 ◽  
Vol 18 (31) ◽  
pp. 21539-21547 ◽  
Author(s):  
Jan von Zamory ◽  
Guinevere A. Giffin ◽  
Sebastian Jeremias ◽  
Franca Castiglione ◽  
Andrea Mele ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ethylene Oxide ◽  
Functional Groups

The presence of oligoether functional groups in the cations of ionic liquids has a significant effect on Li+ coordination.

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