Friedel-Crafts Alkylation of Indoles Exclusively in Water Catalyzed by Ionic Liquid Supported on a Polyacrylonitrile Fiber: A Simple “Release and Catch” Catalyst

ChemCatChem ◽  
2014 ◽  
Vol 6 (10) ◽  
pp. 2947-2953 ◽  
Author(s):  
Xian-Lei Shi ◽  
Huikun Lin ◽  
Pengyu Li ◽  
Wenqin Zhang
Keyword(s):  
Ionic Liquid ◽  
Polyacrylonitrile Fiber

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: A typical “Release and Catch” mechanism

2022 ◽  
Author(s):  
Wenjie Zheng ◽  
Qianwen Wu ◽  
Wusong Xu ◽  
Qizhong Xiong ◽  
Yusef Kianpoor Kalkhajeh ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Renewable Resource ◽  
Polyacrylonitrile Fiber ◽  
Phosphorus Containing ◽  
Catch Mechanism

The enrichment and separation of phosphorus-containing compounds from wastewater can prevent eutrophication and recycle non-renewable resource. Herein, we developed a recyclable functionalized polyacrylonitrile fiber (PANAF-Cl) capable of loading ionic liquid...

Structure and Property Development of Polyacrylonitrile Fiber with Ionic Liquid as Solvent during Spinning Process

2014 ◽  
Vol 936 ◽  
pp. 997-1001 ◽  
Author(s):  
Hai Ming Cheng ◽  
En Jie Zhang ◽  
Xue Min Yin ◽  
Yu Mei Zhang ◽  
Hua Ping Wang
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Dynamic Mechanical Properties ◽  
Polyacrylonitrile Fiber ◽  
Property Development ◽  
Elongation At Break ◽  
Structure And Property ◽  
Pan Fiber ◽  
Subsequent Decrease ◽  
Spinning Process

In order to study the structure and property development of polyacrylonitrile fiber during spinning process with ionic liquid as solvent, the 13 wt% PAN/[BMICl solution was prepared by dissolving polyacrylonitrile (PAN) in 1-butyl-3-methylimidazolium chloride ([BMICl). The dry-jet wet spinning of PAN/[BMIM]Cl was carried out to obtain the samples along spinning line. The mechanical properties, dynamic mechanical properties (DMA) and supramolecular structure of PAN fiber were analyzed. It is found that along spinning line tensile strength of PAN fiber increased significantly; initially, elongation at break increased followed by subsequent decrease. The fibers glass transition temperature (Tg) drops initially and later becomes constant; however, the fibers crystallinity and orientation increased.

Soft ionic liquid based resistive memory characteristics in a two terminal discrete polydimethylsiloxane cylindrical microchannel

2020 ◽  
Vol 8 (38) ◽  
pp. 13368-13374
Author(s):  
Muhammad Umair Khan ◽  
Gul Hassan ◽  
Jinho Bae
Keyword(s):  
Ionic Liquid ◽  
Acrylic Acid ◽  
Sodium Hydroxide ◽  
Sodium Salt ◽  
Resistive Memory ◽  
Cylindrical Microchannel ◽  
Memory Characteristics ◽  
Poly Acrylic Acid

This paper proposes a novel soft ionic liquid (IL) electrically functional device that displays resistive memory characteristics using poly(acrylic acid) partial sodium salt (PAA-Na+:H2O) solution gel and sodium hydroxide (NaOH) in a thin polydimethylsiloxane (PDMS) cylindrical microchannel.

Enhanced Ion Transport in an Ether Aided Super Concentrated Ionic Liquid Electrolyte for Long-Life Practical Lithium Metal Battery Applications

2020 ◽  
Author(s):  
Urbi Pal ◽  
Fangfang Chen ◽  
Derick Gyabang ◽  
Thushan Pathirana ◽  
Binayak Roy ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Current Density ◽  
Coulombic Efficiency ◽  
High Energy ◽  
Liquid Electrolyte ◽  
High Mass ◽  
Lithium Metal ◽  
Ionic Liquid Electrolyte ◽  
Lithium Metal Battery

We explore a novel ether aided superconcentrated ionic liquid electrolyte; a combination of ionic liquid, <i>N</i>-propyl-<i>N</i>-methylpyrrolidinium bis(fluorosulfonyl)imide (C<sub>3</sub>mpyrFSI) and ether solvent, <i>1,2</i> dimethoxy ethane (DME) with 3.2 mol/kg LiFSI salt, which offers an alternative ion-transport mechanism and improves the overall fluidity of the electrolyte. The molecular dynamics (MD) study reveals that the coordination environment of lithium in the ether aided ionic liquid system offers a coexistence of both the ether DME and FSI anion simultaneously and the absence of ‘free’, uncoordinated DME solvent. These structures lead to very fast kinetics and improved current density for lithium deposition-dissolution processes. Hence the electrolyte is used in a lithium metal battery against a high mass loading (~12 mg/cm<sup>2</sup>) LFP cathode which was cycled at a relatively high current rate of 1mA/cm<sup>2</sup> for 350 cycles without capacity fading and offered an overall coulombic efficiency of >99.8 %. Additionally, the rate performance demonstrated that this electrolyte is capable of passing current density as high as 7mA/cm<sup>2</sup> without any electrolytic decomposition and offers a superior capacity retention. We have also demonstrated an ‘anode free’ LFP-Cu cell which was cycled over 50 cycles and achieved an average coulombic efficiency of 98.74%. The coordination chemistry and (electro)chemical understanding as well as the excellent cycling stability collectively leads toward a breakthrough in realizing the practical applicability of this ether aided ionic liquid electrolytes in lithium metal battery applications, while delivering high energy density in a prototype cell.

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