Triethanolamine-based protic ionic liquids with various sulfonic acids: Synthesis and properties

Груздев, М. С.; Shmukler, L. E.; Kudryakova, N.O.; Kolker, A. M.; Sergeeva, Yu. A.; Safonova, L. P.

doi:10.1016/j.molliq.2017.07.078

Cited by 34 publications

(32 citation statements)

References 45 publications

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“…After coating polypropylene with triethanolamine, it can be seen from the infrared spectrum in Figure 4b that three new peaks appeared at 3300 cm −1 , 1650 cm −1 , and 1030 cm −1 , besides the band of polypropylene. These three peaks were all caused by triethanolamine, wherein the band at 3300 cm −1 was due to the stretching vibration of the hydroxyl group of triethanolamine [19], the band at 1650 cm −1 was derived from the molecular bending O–H vibrations [20,21], and the band at 1030 cm −1 was caused by C–O bond vibration of triethanolamine [21]. Compared to untreated polypropylene, it can be seen from Figure 4c,d that the infrared spectrum of the Ag-coated polypropylene has no significant change.…”

Section: Resultsmentioning

confidence: 99%

A Facile Approach for Preparing Ag Functionalized Nonwoven Polypropylene Membrane to Improve Its Electrical Conductivity and Electromagnetic Shielding Performance

et al. 2019

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The commonly used preparation methods of polypropylene functionalization require special equipment to be put into use or take a long time, which limits its application. Therefore, a simple and economical method for preparing silver functionalized nonwoven polypropylene membrane was studied herein. Triethanolamine was first coated on the surface of the polypropylene, and then Ag was deposited on the surface of polypropylene using a continuous reduction reaction of triethanolamine and silver ions. Surface morphology, crystal structure, and surface chemistry during the preparation of Ag functionalized nonwoven polypropylene were investigated. The electrical conductivity, electromagnetic shielding properties, and washing durability of the treated nonwoven polypropylene were also studied. It was found that Ag was uniformly deposited on the surface of the nonwoven polypropylene, and the coating reaction did not change the chemical structure of the polypropylene. The crystallinity and thermal stability of polypropylene were improved after silver coated polypropylene. The washing experiment results showed that the weight gain rate of the treated nonwoven relative to the untreated sample after the 90 min washing ranged from 6.72% to 9.64%. The resistance test results showed that the maximum surface resistivity of Ag coated nonwoven polypropylene was about 1.95 × 105 Ω, which was 64,615 times lower than the original. In addition, the results showed that the maximum electromagnetic shielding effectiveness of the Ag coated nonwoven polypropylene was about 71.6 dB, showing a very good electromagnetic shielding effect.

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Section: Resultsmentioning

confidence: 99%

A Facile Approach for Preparing Ag Functionalized Nonwoven Polypropylene Membrane to Improve Its Electrical Conductivity and Electromagnetic Shielding Performance

et al. 2019

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“…The relevant structure of cations and anions of synthesized PILs are shown in Figure 1 and their description and abbreviation are presented in Table 1. Among them, [MDEA][mesy], [DMEA][mesy], [TEA][mesy], [TEA][OTf], [TEA][Bsa], [ETA][OTf], and [DEA][OTf] have been reported in other studies (Xuedan Song et al, 2012; Gruzdev et al, 2017; Yang et al, 2018). The remaining PILs were reported for the first time in this study.…”

Section: Methodsmentioning

confidence: 91%

Physicochemical Properties of Various 2-Hydroxyethylammonium Sulfonate -Based Protic Ionic Liquids and Their Potential Application in Hydrodeoxygenation

et al. 2019

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In order to obtain the regularities of physicochemical properties of hydroxy protic ionic liquids (PILs) and broaden their potential application, a series of 2-hydroxyethylammonium sulfonate-based PILs were synthesized through proton transfer reaction and characterized by NMR and FT-IR and elemental analysis. Their phase transfer behavior ( T m ) and initial decomposition point ( T d ) were characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively. Meanwhile, the regularities of density (ρ), viscosity (η) and electrical conductivity (σ) of synthesized PILs at different temperatures were measured. The results indicated that their physicochemical properties were tightly related with their structures and the interactions between cations and anions. In addition, the dissociation constants (p K a) of synthesized PILs were obtained by acid-base titration, which revealed that all synthesized PILs had p K a exceeding 7 and their cations were the crux of determining the p K a value. Moreover, several synthesized PILs with a low melting temperature also showed potential application in the deoxidation reaction of cyclohexanol, as they had conversion rates approximating 100% and the selectivity of cyclohexane or cyclohexene was about 80%.

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“…PILs based on triethylamine with sulfonic acids have been largely studied as electrolytes because they typically exhibit ionic conductivities and wide electrochemical windows. [19,26,27] Since [ [PTSA] À were approximately 4.9 and 3.4 mS cm À 1 ( Table 1); this is in the range of typical ionic conductivities of PILs formed between amines and sulfonic acids. [28,29] It is worth noting that the low conductivity of many PILs has been associated with a high viscosity and the poor mobility of ions in such a viscous medium (Table 1 and Figure S4 in the Supporting Information).…”

Section: Resultsmentioning

confidence: 77%

“…PILs based on triethylamine with sulfonic acids have been largely studied as electrolytes because they typically exhibit ionic conductivities and wide electrochemical windows [19,26,27] . Since [EOAH] + [MSA] − and [EOAH] + [PTSA] − were solid at room temperature, we measured their ionic conductivity and the ESW at 100 °C.…”

Section: Resultsmentioning

confidence: 99%

Aqueous Co‐Solvent in Zwitterionic‐based Protic Ionic Liquids as Electrolytes in 2.0 V Supercapacitors

Vicent-Luna

Calero

et al. 2020

ChemSusChem

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High-performance energy-storage devices are receiving great interest in sustainable terms as a required complement to renewable energy sources to level out the imbalances between supply and demand. Besides electrode optimization, a primary objective is also the judicious design of high-performance electrolytes combining novel ionic liquids (ILs) and mixtures of aqueous solvents capable of offering "à la carte" properties. Herein, it is described the stoichiometric addition of a zwitterion such as betaine (BET) to protic ILs (PILs) such as those formed between methane sulfonic acid (MSAH) or p-toluenesulfonic acid (PTSAH) with ethanolamine (EOA). This addition resulted in the formation of zwitterionic-based PILs (ZPILs) containing the original anion and cation as well as the zwitterion. The ZPILs prepared in this work ([EOAH] + [BET][MSA] À and [EOAH] + [BET] [PTSA] À) were liquid at room temperature even though the original PILs ([EOAH] + [MSA] À and [EOAH] + [PTSA] À) were not. Moreover, ZPILs exhibited a wide electrochemical stability window, up to 3.7 V vs. Ag wire for [EOAH] + [BET][MSA] À and 4.0 V vs. Ag wire for [EOAH] + [BET][PTSA] À at room temperature, and a high miscibility with both water and aqueous co-solvent (WcS) mixtures. In particular, "WcS-in-ZPIL" mixtures of [EOAH] + [BET][MSA] À in 2 H 2 O/ACN/DMSO provided specific capacitances of approximately 83 F g À 1 at current densities of 1 A g À 1 , and capacity retentions of approximately 90 % after 6000 cycles when operating at a voltage of 2.0 V and a current density of 4 A g À 1 .

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Triethanolamine-based protic ionic liquids with various sulfonic acids: Synthesis and properties

Cited by 34 publications

References 45 publications

A Facile Approach for Preparing Ag Functionalized Nonwoven Polypropylene Membrane to Improve Its Electrical Conductivity and Electromagnetic Shielding Performance

A Facile Approach for Preparing Ag Functionalized Nonwoven Polypropylene Membrane to Improve Its Electrical Conductivity and Electromagnetic Shielding Performance

Physicochemical Properties of Various 2-Hydroxyethylammonium Sulfonate -Based Protic Ionic Liquids and Their Potential Application in Hydrodeoxygenation

Aqueous Co‐Solvent in Zwitterionic‐based Protic Ionic Liquids as Electrolytes in 2.0 V Supercapacitors

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