POSS and imidazolium-constructed ionic porous hypercrosslinked polymers with multiple active sites for synergistic catalytic CO₂ transformation

Abstract

In this work, we reported a facile one-pot approach to construct polyhedral oligomeric silsesquioxane (POSS) and imidazolium-based ionic porous hypercrosslinked polymers (denoted iPHCPs) with multiple active sites towards efficient catalytic...

Urea and Thiourea-Functionalized, Pyridinium-Based Ionic Polymers Convert CO2 to Cyclic Carbonate under Mild Conditions

“…In our previous work, we synthesized a series of imidazolium-based porous ionic polymers to catalyze the cycloaddition of CO 2 . Distinguished by their easy modification, high specific surface area, dispersed high active sites, good stability, and easy recovery, they are considered as a promising metal-free heterogeneous catalyst for CO 2 conversion. − In addition, the hydrogen-bond donors can form hydrogen bonds with the epoxide to promote the ring opening of the epoxides and stabilize the reaction intermediates, while the dual hydrogen bonds can cooperate to further build up the stability thereby developing into a promising substitute for metal catalysts. Inspired by previous work and the advantages of hydrogen-bond donors, we attempted to synthesize bifunctional ionic polymer catalysts to enable the conversion of CO 2 to cyclic carbonates under milder conditions.…”

POSS-based polyionic liquids for efficient CO2 cycloaddition reactions under solvent- and cocatalyst-free conditions at ambient pressure

“…Ionomeric polymers, PILs, were synthesized by the polymerization of OS-POSS units and the imidazolium linker and verified by Fourier transform infrared (FT-IR) spectroscopy, solid 13 C nuclear magnetic resonance ( 13 C NMR) spectroscopy and solid 29 Si nuclear magnetic resonance ( 29 Si NMR) spec- a The BET surface area calculated over the P/P 0 = 0.05-0.25 range. b The total pore volume calculated at P/P 0 = 0.99. c By BJH analysis.…”

Eco-Friendly Production of Hyper-Cross-Linked Polymers Using Mechanosynthesis and Bioresources: A Critical Review

“…Other atoms such as Br were also used to develop organic frameworks in which the delocalization caused by this atom could help to reduce CO 2 to CO with a selectivity of almost 96% and a yield of about 300 μmol/g for 12 h (see 3D molecular representation in Figure I) . By combining imidazole and octavinylsesquioxane, HCPs with surface areas up to 537 m 2 /g and having microporosity and mesoporosity were obtained, which again acted as efficient catalysts for CO 2 conversion . S-functionalized HCPs were formulated by Li et al, showing very good results for the rearrangement of cyclohexanone oxime.…”

“…59 By combining imidazole and octavinylsesquioxane, HCPs with surface areas up to 537 m 2 /g and having microporosity and mesoporosity were obtained, which again acted as efficient catalysts for CO 2 conversion. 62 S-functionalized HCPs were formulated by Li et al, 63 showing very good results for the rearrangement of cyclohexanone oxime. More examples based on N-and S-doped HCPs can be found in the study of Gu et al 3 Regarding HCP-based catalysts that include metal compounds in their structure, HCPs have been applied as supports for NiOOH and SiO 2 , used as the active phase and Bronsted acid, respectively, demonstrating the ability to produce hydrocracking of anthracene in supercritical propanol.…”