Poly(ionic liquid)s with high density of nucleophile /electrophile for CO2 fixation to cyclic carbonates at mild conditions

Xie, Yaqiang; Liang, Jun; Fu, Yawen; Lin, Jingfang; Wang, Hongtao; Song, Tao; Li, Jun

doi:10.1016/j.jcou.2019.04.023

Cited by 63 publications

(28 citation statements)

References 45 publications

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“…Cyclic carbonate yields of .92 % (1 atm (100 kPa) and 308C for 18-48 h) were obtained for a broad range of epoxides owing to the very high density of bromide anions and zinc sites (six bromide anions in a monomer, 5.15 wt-% loading of Zn). [44] In another study, PIL-supported NHC silver complexes (poly(NHC-Ag/ IL)) containing active sites of ILs and NHC-Ag complexes in the network were able to catalyze the cycloaddition reaction under mild conditions without co-catalyst. [45] A proposed mechanism for the reaction of epoxide with CO 2 , catalyzed by poly(NHC-Ag/IL) is a dual activation of the epoxide ring with a Lewis acid site (NHC-Ag) together with a nucleophilic reagent (Br -), resulting in ring-opening of the epoxide, followed by the addition of CO 2 .…”

Section: Functionalized Pilsmentioning

confidence: 99%

“…The choice of an efficient synthesis protocol and the introduction of targeted active sites (such as HBD groups, metal sites, nucleophiles) with high density and good dispersion can further enhance the stability of ionic polymers. [44] For example, a Co porphyrin-based ionic polymer synthesized via a clickbased reaction was recovered and reused eight times without change in its composition. [53] The internal structure of the catalyst was unchanged and its activity remained above 98 % after eight runs.…”

Section: Recyclability and Stability Of Ionic Polymersmentioning

confidence: 99%

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Emerging Ionic Polymers for CO

et al. 2021

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In this mini review, we highlight some key work from the last 2 years where ionic polymers have been used as a catalyst to convert CO 2 into cyclic carbonates. Emerging ionic polymers reported for this catalytic application include materials such as poly(ionic liquid)s (PILs), ionic porous organic polymers (iPOPs) or ionic covalent organic frameworks (iCOFs) among others. All these organic materials share in common the ionic moiety cations such as imidazolium, pyridinium, viologen, ammonium, phosphonium, and guanidinium, and anions such as halides, [BF 4 ] -, [PF 6 ] -, and [Tf 2 N] -. The mechanistic aspects and efficiency of the CO 2 conversion reaction and the polymer design including functional groups and porosity are discussed in detail. This review should provide valuable information for researchers to design new polymers for important catalysis applications.

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Section: Functionalized Pilsmentioning

confidence: 99%

Section: Recyclability and Stability Of Ionic Polymersmentioning

confidence: 99%

Emerging Ionic Polymers for CO

et al. 2021

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“…In order to overcome this challenging issue, several strategies have been used. The most frequently reported catalysts that lower the energy barrier and promote this reaction are quaternary ammonium salts, alkali metal halides, ionic liquids, functionalized polymers and transition metal complexes [14–18] …”

Section: Introductionmentioning

confidence: 99%

Insights into the BPO₄‐Driven Catalytic Mechanism for the Formation of Cyclic Carbonates from CO₂ and Epoxides

2021

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The growing concern about climate change has aroused great interest in the scientific community to carry out a large number of investigations pointing to find new strategies of using the carbon dioxide (CO2) to produce useful and harmless molecules. A computational study on the catalytic fixation of CO2 to epoxides with the aim of obtaining cyclic carbonates is presented in this article. The boron phosphate (BPO4) and some halides have been used as the catalyst and co‐catalysts, respectively. The reaction mechanisms have been rationalized based on density functional theory (DFT) energies and the polarizable continuum model (PCM) to simulate the effect of different solvents. This study provides a deeper understanding on the BPO4 catalyst and its role on conversion of CO2 into cyclic carbonates by exploring the topography of the potential energy surfaces and analyzing the geometrical and electronic structures of the relevant stationary points along different reaction pathways. In addition, a solvent effect comparison was made between n‐hexanol, Et2O and 2‐butanol.

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“…[ 33–47 ] Also PILs based on imidazolium and bipyridine monomer were constructed and exhibited enhanced efficiency for generating of cyclic carbonates in the presence of zinc bromide. [ 48,49 ]…”

Section: Introductionmentioning

confidence: 99%

Hydroxylamino‐Anchored Poly(Ionic Liquid)s for CO₂ Fixation into Cyclic Carbonates at Mild Conditions

Zhang

Zheng

et al. 2020

Advanced Sustainable Systems

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Catalytic utilization of CO2 addition into chemicals has potential as a strategy for removing CO2 from the atmosphere. In this context the additive‐free catalytic conversion of CO2 into cyclic carbonates in the absence of metal and solvents under mild conditions is a major challenge. Herein, a series of hydroxylamino‐tethered polymeric ionic liquids bearing adjustable alkyl length substitutes are constructed from copolymerization of divinyl benzene and vicinal hydroxyl and amino base monomeric ionic liquids synthesized from 1‐glycidyl‐3‐vinylimidazolium bromide with alkyl amine. The polymeric ionic liquids are used in CO2‐epoxide cycloaddition reactions to prepare cyclic carbonates and demonstrate high efficiency and stable reusability without a co‐catalyst under atmospheric pressure and under solvent‐free conditions. The introduction of alkyl groups on an ionic polymer host backbone can accelerate the reaction process. A preliminary kinetic study is performed using [PDVB‐HAVIM‐C18]Br and the activation energy is calculated as 53.2 kJ mol−1. A hydrogen bonding and Br– ion synergistic catalytic mechanism is proposed to account for the excellent catalytic activity of the synthesized ionic polymer.

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Poly(ionic liquid)s with high density of nucleophile /electrophile for CO2 fixation to cyclic carbonates at mild conditions

Cited by 63 publications

References 45 publications

Emerging Ionic Polymers for CO

Emerging Ionic Polymers for CO

Insights into the BPO₄‐Driven Catalytic Mechanism for the Formation of Cyclic Carbonates from CO₂ and Epoxides

Hydroxylamino‐Anchored Poly(Ionic Liquid)s for CO₂ Fixation into Cyclic Carbonates at Mild Conditions

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Poly(ionic liquid)s with high density of nucleophile /electrophile for CO2 fixation to cyclic carbonates at mild conditions

Cited by 63 publications

References 45 publications

Emerging Ionic Polymers for CO

Emerging Ionic Polymers for CO

Insights into the BPO4‐Driven Catalytic Mechanism for the Formation of Cyclic Carbonates from CO2 and Epoxides

Hydroxylamino‐Anchored Poly(Ionic Liquid)s for CO2 Fixation into Cyclic Carbonates at Mild Conditions

Contact Info

Product

Resources

About

Insights into the BPO₄‐Driven Catalytic Mechanism for the Formation of Cyclic Carbonates from CO₂ and Epoxides

Hydroxylamino‐Anchored Poly(Ionic Liquid)s for CO₂ Fixation into Cyclic Carbonates at Mild Conditions