The ionic liquid-mediated Claus reaction: a highly efficient capture and conversion of hydrogen sulfide

2016 ◽  
Vol 18 (7) ◽  
pp. 1859-1863 ◽  
Author(s):  
Kuan Huang ◽  
Xi Feng ◽  
Xiao-Min Zhang ◽  
You-Ting Wu ◽  
Xing-Bang Hu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Hydrogen Sulfide ◽  
Claus Reaction ◽  
Highly Efficient

Ionic liquids can mediate effectively the reaction of H2S with SO2without catalysts. The conversion of H2S is as high as 96% within 3 min in [hmim][Cl]. This finding opens up a promising roadmap for the simultaneous capture and conversion of H2S.

Heterogenization of amine-functionalized ionic liquids using graphene oxide as a support material: a highly efficient catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction

2017 ◽  
Vol 41 (24) ◽  
pp. 15545-15554 ◽  
Author(s):  
Charu Garkoti ◽  
Javaid Shabir ◽  
Padmini Gupta ◽  
Manisha Sharma ◽  
Subho Mozumdar
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Ionic Liquids ◽  
Recyclable Catalyst ◽  
Support Material ◽  
Efficient Catalyst ◽  
Functionalized Ionic Liquid ◽  
Type Reaction ◽  
Highly Efficient ◽  
Amine Functionalized

Heterogenization of amine functionalized ionic liquid and its application as an efficient and recyclable catalyst.

Brønsted acidic ionic liquid-catalyzed dehydrative formation of isosorbide from sorbitol: introduction of a continuous process

2017 ◽  
Vol 7 (10) ◽  
pp. 2065-2073 ◽  
Author(s):  
Jie Deng ◽  
Bao-Hua Xu ◽  
Yao-Feng Wang ◽  
Xian-En Mo ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Continuous Process ◽  
Efficient Synthesis ◽  
Acidic Ionic Liquid ◽  
Highly Efficient ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
First Time

A highly efficient synthesis of isosorbide from sorbitol was developed using Brønsted acidic ionic liquids (BILs) as the catalyst for the first time.

scholarly journals Highly efficient synthesis of alkylidene cyclic carbonates from low concentration CO2 using hydroxyl and azolate dual functionalized ionic liquids

2021 ◽  
Author(s):  
Guiling Shi ◽  
Ran Zhai ◽  
Haoran Li ◽  
Congmin Wang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic System ◽  
Cyclic Carbonates ◽  
Efficient Synthesis ◽  
Excellent Performance ◽  
Functionalized Ionic Liquid ◽  
Low Concentration ◽  
Propargylic Alcohols ◽  
Highly Efficient

A dual functionalized ionic liquid catalytic system was developed for the reaction between CO2 and propargylic alcohols, and exhibited excellent performance and good reusability, even under a low concentration of CO2 in a gram-scale reaction.

Removal of Hydrogen Sulfide from Gas Mixtures Using Membranes Impregnated with Ionic Liquids

2018 ◽  
Vol 7 (1) ◽  
pp. 31-37
Author(s):  
А. Ахметшина ◽  
A. Ahmetshina ◽  
А. Мечергуи ◽  
A. Mechergui ◽  
А. Петухов ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Hydrogen Sulfide ◽  
Transport Properties ◽  
Binary Mixtures ◽  
Separation Factor ◽  
Gas Mixtures ◽  
Porous Membranes ◽  
Acidic Gases ◽  
Gas Transport Properties

In this paper have been considered gas transport properties of porous membranes immobilized by 1-butyl‑3-methylimidazolium tetrafluoroborate (bmim [BF4]) and 1-butyl‑3-methylimidazolium acetate (bmim [ace]) toward CH4, CO2 and H2S. Have been investigated transport features of individual gases as well as theirs binary mixtures CO2/CH4 and H2S/CH4. It has been stated that for binary gas mixtures the highest efficiency of acidic gases separation is achieved on membranes containing bmim [ace]. It has been shown experimentally that for a membrane operating according to mechanism of simplified transport, the separation factor increases with diminishing of concentration for penetrant fixed by ionic liquid.

scholarly journals Highly efficient electrochemical reduction of CO2 to CH4 in an ionic liquid using a metal–organic framework cathode

2016 ◽  
Vol 7 (1) ◽  
pp. 266-273 ◽  
Author(s):  
Xinchen Kang ◽  
Qinggong Zhu ◽  
Xiaofu Sun ◽  
Jiayin Hu ◽  
Jianling Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Electrochemical Reduction ◽  
Metal Organic Framework ◽  
Selective Reduction ◽  
Highly Efficient ◽  
Metal Organic ◽  
Reduction Of Co2 ◽  
Organic Framework

It has been discovered that Zn metal-organic framework (Zn-MOF) electrodes and ionic liquids are an excellent combination for the efficient and selective reduction of CO2 to CH4.

Extractive/catalytic oxidative mechanisms over [Hnmp]Cl·xFeCl3 ionic liquids towards the desulfurization of model oils

2019 ◽  
Vol 43 (20) ◽  
pp. 7725-7732 ◽  
Author(s):  
Yun Hao ◽  
Ying-juan Hao ◽  
Jie Ren ◽  
Biao Wu ◽  
Xiao-jing Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Sulfur Removal ◽  
Highly Efficient

A highly efficient extractant of an FeCl3-based ionic liquid is prepared and its extractive/catalytic oxidative mechanisms for sulfur removal are proposed.

Highly efficient and recyclable copper based ionic liquid catalysts for amide synthesis

2016 ◽  
Vol 40 (8) ◽  
pp. 7162-7170 ◽  
Author(s):  
Poonam Rani ◽  
Rajendra Srivastava
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Reaction Conditions ◽  
Amide Synthesis ◽  
Highly Efficient ◽  
Tertiary Amides

Copper based ionic liquids have been successfully prepared for the synthesis of primary, secondary and tertiary amides under mild reaction conditions.

Mapping the “Extra Solvent Power, ESP” of Ionic Liquids for Monomers, Polymers and Globular Nanoparticles

2017 ◽  
Author(s):  
Jose A. Pomposo
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Linear Polymers ◽  
Green Solvents ◽  
Ionic Polymers ◽  
First Time ◽  
Solvent Power

Understanding the miscibility behavior of ionic liquid (IL) / monomer, IL / polymer and IL / nanoparticle mixtures is critical for the use of ILs as green solvents in polymerization processes, and to rationalize recent observations concerning the superior solubility of some proteins in ILs when compared to standard solvents. In this work, the most relevant results obtained in terms of a three-component Flory-Huggins theory concerning the “Extra Solvent Power, ESP” of ILs when compared to traditional non-ionic solvents for monomeric solutes (case I), linear polymers (case II) and globular nanoparticles (case III) are presented. Moreover, useful ESP maps are drawn for the first time for IL mixtures corresponding to case I, II and III. Finally, a potential pathway to improve the miscibility of non-ionic polymers in ILs is also proposed.

Dynamics of Ion Locking in Doubly Polymerized Ionic Liquids

2020 ◽  
Author(s):  
Swati Arora ◽  
Julisa Rozon ◽  
Jennifer Laaser
Keyword(s):  
Dielectric Constant ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ion Pairs ◽  
Polymer Chains ◽  
Ion Motion ◽  
Charged Species ◽  
Broadband Dielectric Spectroscopy ◽  
Covalently Linked ◽  
Insight Into

<div>In this work, we investigate the dynamics of ion motion in “doubly-polymerized” ionic liquids (DPILs) in which both charged species of an ionic liquid are covalently linked to the same polymer chains. Broadband dielectric spectroscopy is used to characterize these materials over a broad frequency and temperature range, and their behavior is compared to that of conventional “singly-polymerized” ionic liquids (SPILs) in which only one of the charged species is attached to the polymer chains. Polymerization of the DPIL decreases the bulk ionic conductivity by four orders of magnitude relative to both SPILs. The timescales for local ionic rearrangement are similarly found to be approximately four orders of magnitude slower in the DPILs than in the SPILs, and the DPILs also have a lower static dielectric constant. These results suggest that copolymerization of the ionic monomers affects ion motion on both the bulk and the local scales, with ion pairs serving to form strong physical crosslinks between the polymer chains. This study provides quantitative insight into the energetics and timescales of ion motion that drive the phenomenon of “ion locking” currently under investigation for new classes of organic electronics.</div>

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