Category: 79917-90-1

Chang, Jinyu published the artcilePreparation of 5-methyl-3,5-dipropyl-2-pyrazoline catalyzed by chloroaluminate ionic liquids, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Journal of Molecular Structure (2022), 132539, database is CAplus.

5-Methyl-3,5-dipropyl-2-pyrazoline is an intermediate for the preparation of new high energy fuels. In this paper, chloroaluminate ionic liquids ([Bmim]Cl-xAlCl₃, x = 1, 1.2, 1.4, 1.6, 1.8, 2.0) were applied as green catalysts for the synthesis of 5-methyl-3,5-dipropyl-2-pyrazoline through the intramol. cyclization reaction of 2-pentyl ketazine. The effects of temperature, acidity and dosage of ionic liquids on the cyclization reaction were studied in detail and the highest catalytic performance was under the conditions as 110°, [Bmim]Cl-1.6AlCl₃ and 10% of 2-pentyl ketazine. With the theor. simulations, the possible catalytic mechanism was proposed as the hydrogen-like interaction between Al ([Bmim]⁺AlCl₄^–) and N1 atoms, which increases the charge of N2 atoms, thereby improving its nucleophilicity and further making it undergo intramol. addition reaction with Me. This study will provide guidance for the green preparation of 5-methyl-3,5-dipropyl-2-pyrazoline.

Journal of Molecular Structure published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Hu, Xutao published the artcileElucidating the transition between CO₂ physisorption and chemisorption in 1,2,4-triazolate ionic liquids at a molecular level, HPLC of Formula: 79917-90-1, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2022), 435(Part_2), 134956, database is CAplus.

Capture of CO₂ is a crucial process to achieve carbon neutrality. High-performance CO₂ capture involves both physi- and chemi-sorption, with a transition between them. However, the underlying mechanistic insights required to produce the methods to tune the transition are poorly understood. Here, we describe a series of 1,2,4-triazolate ionic liquids (TZ ILs) that capture > 0.7 mol CO₂ /mol TZ IL in a two-stage absorption process. Physi- and chemi-sorption were studied by spectroscopy using ¹³CO₂ and the transition between the two sorption modes has been identified. UV-Vis, FT-IR and NMR spectroscopy as well as d. and viscosity measurements demonstrate that physisorption is initially the dominant process whereas later chemisorption predominates. Based on the identification of key species combined with theor. modeling, a plausible mol.-level mechanism is proposed for the transition between the two sorption modes. These mechanistic insights enable the transition of CO₂ capture to be tuned.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, HPLC of Formula: 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Chen, Jiuyan published the artcileThe mechanisms involved into the inhibitory effects of ionic liquids chemistry on adsorption performance of ciprofloxacin onto inorganic minerals, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2022), 129422, database is CAplus.

The ionic liquids (ILs) can influence the adsorption of antibiotics on minerals but there was ambiguity about mechanisms. Herein, we demonstrated the adsorption characteristics of ciprofloxacin (CIP) onto ferrihydrite and montmorillonite by various soluble ILs. Five imidazolium-based ILs with different alkyl chain lengths ([C₂mim]Cl, [C₄mim]Cl, [C₆mim]Cl) and counteranions ([C₄mim][TOS] and [C₄mim][PF₆]) were employed. The results validated that ILs could suppress CIP adsorption on both minerals due to the adsorption site competition between cations and CIP mols., steric hindrance induced by long alkyl chains of ILs, and electrostatic interaction. Interestingly, the adsorption-inhibition effects of ILs were almost unchanged with the lengthening alkyl chain for ferrihydrite, which were ascribed to the comparable adsorption capacities of the three ILs on ferrihydrite. Whereas, the effects of ILs on CIP adsorption onto montmorillonite followed the order of [C₆mim]Cl > [C₄mim]Cl > [C₂mim]Cl owing to the adsorption site competition and steric hindrance effects on the ILs increased with the lengthening alkyl chain. Furthermore, the inhibitory effects of ILs on CIP adsorption onto both studied minerals were also dependent on the counteranions (kept the same cation ([C₄mim]+)) and in the following order of [C₄mim][PF₆] > [C₄mim][TOS] > [C₄mim]Cl, which was mainly ascribed to the differences of anions in the ion sizes and the binding affinities to minerals. Addnl., the extent of the inhibitory impact of [C₄mim][TOS] on CIP adsorption onto ferrihydrite declined with increasing solution pH from 5.0 to 9.0, which was attributed to the amounts of adsorbed [TOS]^– declined with increasing pH. Contrarily, for montmorillonite, the extent increased with increasing pH, owing to increase in adsorption site competition and steric effect at higher pH conditions. Our findings emphasize the significance of emerging contaminants in understanding the antibiotic environmental behavior in eco-environmental systems.

Colloids and Surfaces, A: Physicochemical and Engineering Aspects published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Wang, Qiang published the artcileEfficient absorption of low partial pressure SO₂ by deep eutectic solvents based on pyridine derivatives, Application of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Chemical Engineering Research and Design (2022), 36-44, database is CAplus.

Efficient and reversible absorption of SO₂ by deep eutectic solvents (DESs) has drawn much attention in recent years. In this work, a new type of deep eutectic solvents (DESs) were synthesized via pyridine derivatives, nicotinamide, aminopyridines and hydroxypyridines, as the hydrogen bond donors (HBDs) with common quaternary ammonium salt ionic liquids (ILs) as hydrogen bond acceptors (HBAs). The studied DESs exhibited an attractive absorption behavior for SO₂, especially for low concentration SO₂. The 1-allyl-3-methylimidazolium chloride (AmimCl)/2-aminopyridine (2-NH2Py) (2:1) and 1-butyl-3-methylimidazolium chloride (BmimCl)/3-aminopyridine (3-NH2Py) (2:1) could capture 0.273 and 0.223 g SO₂/g DES at 293 K and 1.0 kPa, resp., surpassing that of most DESs and ILs in the present literature. The influence of DES composition, temperature and pressure on SO₂ absorption performance was systematically investigated. Moreover, the absorption mechanism studied by NMR (NMR) and Fourier transform IR (FT-IR) spectroscopies indicated that the efficient absorption of SO₂ was ascribed to the chem. interaction between the pyridine nitrogen atom and SO₂.

Chemical Engineering Research and Design published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C15H12O8, Application of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Hu, Kaibo published the artcileRemoval of aluminum to obtain high purity gadolinium with pyridinium-based ionic liquids, Formula: C8H15ClN2, the publication is Hydrometallurgy (2022), 105930, database is CAplus.

As an associated element, aluminum (Al(III)) has a neg. effect on the purity of rare earth gadolinium (Gd(III)). Three pyridinium-based ionic liquids ([(CH₂)nCOOHpyr][NTf₂], n = 3, 5, 7) were proposed as the solvent in liquid-liquid extraction for separation of the Al(III) impurity from Gd(III) in this study. The effect of pH value of the aqueous phase, diluent type, extraction time and temperature on the extraction separation of Al³⁺ from GdCl₃ solution were investigated systemically. The results show that the separation factor β of Al(III)/Gd(III) is up to 340 by adjusting the pH value of the aqueous phase which is higher than the values of other reported systems, and the removal efficiency of Al(III) could reach 97.1%, with the recovery efficiency of Gd(III) of 85.6% through one-time extraction using a mixture of ionic liquids[(CH₂)₇COOHpyr][NTf₂]-[C₄mim][NTf₂] as the extractant. The slope anal. and IR spectroscopic characterization indicated that the extraction mechanism of Al(III) by the [(CH₂)₇COOHpyr][NTf₂]-[C₄mim][NTf₂] system follows the cation exchange mechanism. After the extraction, 0.08 mol/L hydrochloric acid aqueous solution was used to strip Al(III) from the ionic liquid phase, and complete recovery of Al(III) could be realized. The extraction efficiency of the [(CH₂)₇COOHpyr][NTf₂]-[C₄mim][NTf₂] system for separation of Al(III) is still more than 97.8% after recycling for 8 cycles.

Hydrometallurgy published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Formula: C8H15ClN2.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Wang, Yuanyuan published the artcileGreen fabrication of an ionic liquid-activated lignocellulose flame-retardant composite, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Industrial Crops and Products (2022), 114602, database is CAplus.

A flame-retardant lignocellulose composite was fabricated via ionic liquid activation assisted by hot-pressing. To obtain a dilated, isolated surface, lignocellulose was pretreated with an ionic liquid After modification with an ionic liquid, micro/nanofibrils appeared on the surface of lignocellulose. Crosslinking between micro/nanofibrils was beneficial for the deposition of inorganic particles. Ammonium polyphosphate and aluminum hydroxide particles were deposited on the surface of lignocellulose via hydrogen bonding and van der waals adsorption, forming a flame-retardant layer. The ionic liquid-activated flame-retardant lignocellulose composite exhibited better flame retardancy and higher mech. strength than those of pure lignocellulose. Compared to those of pure lignocellulose, the heat release rate (HRR), total heat release (THR) and total smoke production (TSP) of lignocellulose-based ammonium polyphosphate/aluminum hydroxide (LPA) composites decreased by 78.5%, 35.71% and 88.24%, resp. The LPA composites had a mech. strength of 48.5 MPa, which was 33.99% higher than that of pure lignocellulose. This method provides a new approach for lignocellulose-based flame-retardant materials.

Industrial Crops and Products published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C13H10F2, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Wang, Hui published the artcileEffect of critical micelle concentration of imidazole ionic liquids in aqueous solutions on the wettability of anthracite, Synthetic Route of 79917-90-1, the publication is Energy (Oxford, United Kingdom) (2022), 239(Part_B), 122088, database is CAplus.

In this study, the influence of ionic liquids (ILs) on the microstructure and wetting behavior of anthracite is explored. ¹H NMR and conductometry are used to determine the critical micelle concentration (CMC) for the aggregation of the ILs in an aqueous solution XPS and zeta potential are used to analyze the changes in functional groups on the surface of coal treated with ILs and their effects on the wetting process. The results show that with an increase in the concentration of the ILs, the chem. shift of the end proton of the alkyl side chain moves forward to the high field, and the chem. shift value decreases. 1-Butyl-3-methylimidazolium chloride [Bmim][Cl] and 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim][BF₄] in aqueous solution attain the CMC at 0.93 mol/L and 0.95 mol/L, resp. XPS results show that at the CMC of [Bmim][Cl], the relative content of oxygen-containing functional groups (C-O-, C=O, COO-) is higher, and the wetting effect is better. When the concentration of [Bmim][BF₄] in aqueous solution is 0.5 mol/L, it has a low hydrophobic group (C-C/C-H) content and strong wetting ability to coal dust. At the CMC, [Bmim][Cl] aqueous solution has an inhibiting effect on the wetting behavior, while [Bmim][BF₄] has the opposite effect.

Energy (Oxford, United Kingdom) published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C25H47NO8, Synthetic Route of 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Zhang, Shunlin published the artcileThe Chemistry of the Passivation Mechanism of Perovskite Films with Ionic Liquids, SDS of cas: 79917-90-1, the publication is Inorganic Chemistry (2022), 61(12), 5010-5016, database is CAplus and MEDLINE.

Passivation of perovskite films by ionic liquids (ILs) improves the performance (efficiency and stability) of perovskite solar cells (PSCs). However, the role of ILs in the passivation of perovskite films is not fully understood. Here, we report the reactions of commonly used ILs with the components of perovskites. The reaction of ILs with perovskite precursors (PbI₂ and methylammonium iodide or formamidinium iodide) in a 1:1:1 molar ratio affords one-dimensional (1D) salts composed of the IL cation interspersed along infinite 1D polymeric [PbI₃]^–_n chains. If the IL is applied in excess, the resulting crystal is composed of six cations surrounding a discrete [Pb₃I₁₂]^6- cluster. All the isolated salts were unambiguously characterized by single-crystal X-ray diffraction anal., which also reveals extensive hydrogen-bonding interactions.

Inorganic Chemistry published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C13H18N2, SDS of cas: 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Li, Na published the artcileThe activity and molecular interaction of lysozyme in adding four ionic liquids aqueous solutions, Computed Properties of 79917-90-1, the publication is Journal of Molecular Liquids (2022), 118788, database is CAplus.

In this work, four hydrophilic ionic liquids (ILs, 1-butyl-3-methylimidazolium tetrafluoroborate ([C₄mim]BF₄), 1-butyl-3-methylimidazolium chloride ([C₄mim]Cl), 1-butyl-3-methylimidazolium bromide ([C₄mim]Br) and 1,3-dimethylimidazolium iodide ([dmim]I)) were selected to probe their effect on lysozyme activity and the mol. interaction in aqueous solutions Specifically, the effects of pH and concentration of ILs on lysozyme activity were investigated by using the spectrophotometric turbidity assay. The results demonstrated that the effect of ILs on lysozyme activity depended on the concentration of ILs. Fixing the pH at 6.85, lysozyme activity rose firstly and then reduced with the increase of concentration of four ILs, reaching the maximum at 75 mM. The UV-Vis spectra illustrated that the interaction between ILs and lysozyme was weak. The results of emission and synchronous fluorescence spectra indicated that ILs had a quenching effect on the fluorescence of lysozyme, and the quenching effect increased with the increasing concentration of ILs. Meanwhile, the fluorescent quenching mechanism of ILs on lysozyme was dynamic quenching, and ILs had significant effects on the tryptophan (Trp) residues Trp62 or Trp108 at the active site of lysozyme, which suggested that effects of ILs on lysozyme activity could be attributed to the conformational changes of lysozyme triggered by changes in the microenvironment surrounding Trp62 or Trp108.

Journal of Molecular Liquids published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Computed Properties of 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Wang, Liling published the artcileExtraction and Determination of Protein from Edible Oil Using Aqueous Biphasic Systems of Ionic Liquids and Salts, Application In Synthesis of 79917-90-1, the publication is Food and Bioprocess Technology (2022), 15(1), 190-202, database is CAplus.

This study aimed to develop the extraction method of protein from edible oil for rapid detection. Firstly, aqueous biphasic systems (ABS) based on six hydrophilic ionic liquids (ILs) and three salts were developed and the phase diagram was drawn by turbidimetric point method. The binodal curves were fitted to the Merchuk equation. On this basis, the ABS composed of IL and salt were applied to extract protein from edible oil. The type of IL or salt, IL concentration, salt concentration, oil mass, extraction pH, and temperature on the extraction efficiency of protein from oil were investigated. The results showed that the optimum conditions for the extraction of protein from edible oil with ABS were as follows: 50% (w/v) K3PO4, 20% (w/v) [Bmim]Cl at 35°C, and pH 9.0. Under the optimal conditions, the protein extraction efficiency was almost 100%. Also, the extraction mechanism was studied and the main driving factors of protein extraction may be the hydrophobicity, electrostatic interaction, and salting-out between mols. Finally, the method was used to detect the com. edible oils from different sources. The results showed that the ABS could also be used to extract protein from other edible oils. In conclusion, the IL-based ABS method is simple and rapid for protein extraction from edible oil, and will highlight novel possibilities in the large-scale separation and purification of protein from oily solution

Food and Bioprocess Technology published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C38H74Cl2N2O4, Application In Synthesis of 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem