Imidazolium‐ and Triazine‐Based Porous Organic Polymers for Heterogeneous Catalytic Conversion of CO₂ into Cyclic Carbonates

Abstract

CO adsorption and concomitant catalytic conversion into useful chemicals are promising approaches to alleviate the energy crisis and effects of global warming. This is highly desirable for developing new types of heterogeneous catalytic materials containing CO -philic groups and catalytic active sites for CO chemical transformation. Here, we present an imidazolium- and triazine-based porous organic polymer with counter chloride anion (IT-POP-1). The porosity and CO affinity of IT-POP-1 may be modulated at the molecular level through a facile anion-exchange strategy. Compared with the post-modified polymers with iodide and hexafluorophosphate anions, IT-POP-1 possesses the highest surface area and the best CO uptake capacity with excellent adsorption selectivity over N . The roles of the task-specific components such as triazine, imidazolium, hydroxyl, and counter anions in CO absorption and catalytic performance were illustrated. IT-POP-1 exhibits the highest catalytic activity and excellent recyclability in solvent- and additive-free cycloaddition reaction of CO with epoxides.

Ionic‐Liquid‐Modified Click‐Based Porous Organic Polymers for Controlling Capture and Catalytic Conversion of CO2

“…After the incorporation of a certain amount of IL, full conversion of 2‐(chloromethyl)oxirane was achieved for CPP‐IL0.05. Besides the above‐mentioned interactions for CO 2 adsorption and activation, the counter bromide anion of 2‐methyimidazolium groups facilitates the ring opening of epoxides through the stronger nucleophilic attack toward the epoxides . However, when CPP‐IL0.15 and CPP‐IL0.25 were used as catalysts, 97 and 84 % of 2‐(chloromethyl)oxirane was converted, respectively, which reveals the synergetic effects of the porous properties of the polymer and nucleophilicity of the charge‐balanced bromide anion on the chemical transformation.…”

Porous Organic Polymers for CO2 Storage and Conversion Reactions

“…Wang et al. on the other hand incorporated the imidazolium, triazine, hydroxyl and counter iodide ions in a porous polymer material IT‐POP‐1, which catalyzes the CO 2 fixation on epoxides to the respective cyclic carbonates . Baeg et al.…”

“…Zn(II) containing ionic liquid containing PPH3‐ILX@POPs is one of the typical POPs where multifunctional moieties are grafted within the POP framework through the solvothermal condensation of an ionic liquid bearing olefinic moiety, zinc halide and triphenylphosphine (PPh 3 ) linked with vinyl groups in the presence of AIBN initiator. IT‐POP‐1 (Figure ) is another typical POP bearing imidazolium, triazine, phenolic‐OH and I − ions, and thus have potential to play multifunctional behavior in a complex chemical reaction. Wang et al.…”

Ionic‐Liquid‐Functionalized UiO‐66 Framework: An Experimental and Theoretical Study on the Cycloaddition of CO2 and Epoxides

“…[2,3] Compared to carbon capture and storage( CCS) techniques, carbon capturea nd utilization (CCU) techniques are more attractive, ast he captured CO 2 can be effectively converted to various valuable productss uch as urethanes, formic acid, dimethyl carbonate, and cyclic carbonates. [11][12][13][14][15][16][17][18][19][20] Cyclic carbonates are highly stable compounds; thus, long-term sequestration of CO 2 is possible. [11][12][13][14][15][16][17][18][19][20] Cyclic carbonates are highly stable compounds; thus, long-term sequestration of CO 2 is possible.…”