Direct synthesis of ordered imidazolyl-functionalized mesoporous polymers for efficient chemical fixation of CO<sub>2</sub>

Zhang, Wei; Liu, Tingying; Wu, Haihong; Wu, Peng; He, Min

doi:10.1039/c4cc08062a

Cited by 51 publications

(31 citation statements)

References 25 publications

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“…Organic ionic polymers with an extremely high density of ionic sites (a subclass of polyelectrolytes in the field of polymer science) have emerged as versatile platforms for catalyst supports because their properties can be altered easily and broadly by cation functionalization and counterion exchange . With this in mind, we envisioned a route in which the introduction of Lewis acid (metal center) active sites to a halogen anion (X − ) based ionic polymer could provide highly active, recyclable catalysts for the synthesis of cyclic carbonates.…”

Section: Introductionmentioning

confidence: 99%

Ionic Polymer Microspheres Bearing a Co^III–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO₂ and Epoxides

Leng

Zhang

et al. 2016

Chemistry A European J

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We report a unique strategy to obtain the bifunctional heterogeneous catalyst TBB-Bpy@Salen-Co (TBB=1,2,4,5-tetrakis(bromomethyl)benzene, Bpy=4,4'-bipyridine, Salen-Co=N,N'-bis({4-dimethylamino}salicylidene)ethylenediamino cobalt(III) acetate) by combining a cross-linked ionic polymer with a Co(III) -salen Schiff base. The catalyst showed extra high activity for CO2 fixation under mild, solvent-free reaction conditions with no requirement for a co-catalyst. The synthesized catalyst possessed distinctive spherical structural features, abundant halogen Br(-) anions with good leaving group ability, and accessible Lewis acidic Co metal centers. These unique features, together with the synergistic role of the Co and Br(-) functional sites, allowed TBB-Bpy@Salen-Co to exhibit enhanced catalytic conversion of CO2 into cyclic carbonates relative to the corresponding monofunctional analogues. This catalyst can be easily recovered and recycled five times without significant leaching of Co or loss of activity. Moreover, based on our experimental results and previous work, a synergistic cycloaddition reaction mechanism was proposed.

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Section: Introductionmentioning

confidence: 99%

Ionic Polymer Microspheres Bearing a Co^III–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO₂ and Epoxides

Leng

Zhang

et al. 2016

Chemistry A European J

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“…[9][10][11] Owing to exponential growth in the field of nanomaterials over the last two decades, we have witnessed the rapid development of high-performance nanostructured adsorbents. Numerous nanomaterials with well-defined porosities and controllable surface properties have been designed, synthesized and used as adsorbents for desired applications, including for CO 2 capture, 12,13 for the separation and storage of fuel gas 14 and especially for the elimination of pollutants in aqueous effluents. 15,16 In recent years, water contamination has become a serious environmental problem, and a huge amount of toxic dyes have been discharged directly into the environment.…”

Section: Introductionmentioning

confidence: 99%

Super-adsorbent material based on functional polymer particles with a multilevel porous structure

et al. 2016

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Porous polymer particles with multilevel structures consisting of submicron-sized hollow cavities and interconnected mesopores within the crosslinked shell were designed and prepared. An extremely high density of anhydride groups in the crosslinked shell can be conveniently converted into versatile functional groups for the adsorption of hazardous pollutants. As a proof of concept, we utilized carboxylate-functionalized hollow particles as a selective adsorbent for the removal of the basic dye methylene blue and found that these particles exhibited a very high adsorption capacity (1603 mg g − 1 ). Furthermore, the hollow structure, highly interconnected mesopores and rigid shell of the particles not only endow the adsorbent with fast adsorption/desorption rates but also facilitate their facile separation and easy regeneration. We believe that these porous polymer particles have great potential for applications in many fields, including as adsorbents, catalyst supports and matrices for the binding of sensitive materials.

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“…The catalyst was used five times without significant loss of activity. More recently, the same authors reported the direct synthesis of a series of FDU‐IL materials obtained through an evaporation‐induced self‐assembly method . Complete conversion of propylene oxide was achieved with 0.5 mol % of catalyst within 3 h and the material was recycled five times with no loss in activity.…”

Section: Csilp As Catalystsmentioning

confidence: 99%

Covalently Supported Ionic Liquid Phases: An Advanced Class of Recyclable Catalytic Systems

2016

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In this review, the most recent advances in the synthesis and catalytic applications of covalently supported ionic liquid (IL) phases will be discussed. This class of recyclable catalytic materials is based on the covalent attachment of several types of ammonium salts, usually imidazolium, but also thiazolium, triazolium, and pyrrolidinium salts, on the surface of different supports, for example, silica, periodic mesoporous organosilica, polystyrene, magnetic‐based materials, carbon nanotubes (NTs), halloysite NTs, polyhedral oligomeric silsesquioxane (POSS), and fullerenes. Moreover, poly(ionic liquid) materials, in which the IL‐based structure also acts as a support, will be considered. The synthetic applications of these materials will be presented, with special emphasis on their roles as catalysts, without added organocatalysts or metal‐based catalysts, as supports for organocatalysts, and as supports for metal‐based catalysts.

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Direct synthesis of ordered imidazolyl-functionalized mesoporous polymers for efficient chemical fixation of CO₂

Abstract: Ordered imidazolyl-functionalized mesoporous polymers (IM-MPs) are directly synthesized by an evaporation-induced self-assembly method, which are further functionalized with bromoethane and employed as highly efficient and recyclable catalysts for the cycloaddition of CO2 to epoxides.

Cited by 51 publications

References 25 publications

Ionic Polymer Microspheres Bearing a Co^III–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO₂ and Epoxides

Ionic Polymer Microspheres Bearing a Co^III–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO₂ and Epoxides

Super-adsorbent material based on functional polymer particles with a multilevel porous structure

Covalently Supported Ionic Liquid Phases: An Advanced Class of Recyclable Catalytic Systems

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Direct synthesis of ordered imidazolyl-functionalized mesoporous polymers for efficient chemical fixation of CO2

Abstract: Ordered imidazolyl-functionalized mesoporous polymers (IM-MPs) are directly synthesized by an evaporation-induced self-assembly method, which are further functionalized with bromoethane and employed as highly efficient and recyclable catalysts for the cycloaddition of CO2 to epoxides.

Cited by 51 publications

References 25 publications

Ionic Polymer Microspheres Bearing a CoIII–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO2 and Epoxides

Ionic Polymer Microspheres Bearing a CoIII–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO2 and Epoxides

Super-adsorbent material based on functional polymer particles with a multilevel porous structure

Covalently Supported Ionic Liquid Phases: An Advanced Class of Recyclable Catalytic Systems

Contact Info

Product

Resources

About

Direct synthesis of ordered imidazolyl-functionalized mesoporous polymers for efficient chemical fixation of CO₂

Ionic Polymer Microspheres Bearing a Co^III–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO₂ and Epoxides

Ionic Polymer Microspheres Bearing a Co^III–Salen Moiety as a Bifunctional Heterogeneous Catalyst for the Efficient Cycloaddition of CO₂ and Epoxides