Novel porous organic polymers functionalized by metalloporphyrin and phosphonium salts for the efficient synergistic catalysis of CO₂ conversion under mild conditions

Abstract

Functional porous organic polymers (POPs) have been extensively developed as the heterogeneous catalysts for carbon dioxide conversion. However, exploring a general strategy to incorporate versatile active moieties into POPs is...

Construction of silsesquioxane and phosphinum‐based ionic porous hypercrosslinked polymers for efficient heterogeneous catalytic CO2 cycloaddition

“…In addition, the in‐situ formed POSS‐derived Si–OH groups could be used as HBD active groups to work together with mixed active anions, which also play an important role in enhancing the heterogeneous catalytic performance of P‐iPHCP‐14. As a result, the good catalytic performance of P‐iPHCP‐14 for the conversion of CO 2 with EH under mild conditions was superior to most of many previously reported metal‐free iPOPs 11,15–20,32,35,36,39,48 and metal‐based iPOPs catalysts 28,29,33,57,58 (seen the detailed comparisons Table S2), which can be attributed to the synergistic catalysis of free nucleophilic anions Cl − and Br − , the complex anion [AlCl 3 Br] − and POSS‐derived Si–OH HBD active groups in the catalyst P‐iPHCP‐14.…”

Optimization and kinetics of crown ether-based hydroxyl-rich organic polymers for sustainable CO2 fixation and iodine vapor adsorption

“…62 The peak at approximately 1141 cm −1 is the result of the C–O–C stretching mode of crown ethers. 43,63 In the case of CHOP@KIs, the O–H stretching vibration originating from phenol is located at 3465 cm −1 ; 41,61 the absence of the corresponding signal in dialdehydedibenzo-18-crown-6 and the aforementioned peaks suggest the successful formation of a polymer framework via a phenolic formaldehyde condensation reaction.…”

“…17,18 While the high free energy of epoxides can counterbalance the high thermal stability of CO 2 in the atmosphere, certain catalysts make the xation of CO 2 onto epoxides thermodynamically advantageous. The current state of the art involves the development of a wide range of catalysts such as ionic liquids (ILs), [19][20][21] metal complexes, [22][23][24][25][26][27] metal organic frameworks (MOFs), [28][29][30][31][32] supported catalysts, [33][34][35][36][37] covalent organic frameworks (COFs), [38][39][40] and porous organic polymers (POPs), [41][42][43][44][45][46][47] each possessing distinct structures and functions, to efficiently facilitate this reaction. Among these, POPs exhibit unique CO 2 conversion and I 2 capture properties, due to their high intrinsic specic surface area, controllable pore size, synthetic versatility, exceptional physicochemical stability, and facile functionalization for creating metal-active centers.…”

Two in one: aluminum porphyrin-based porous organic polymers containing symmetrical quaternary phosphonium salts for catalytic conversion of CO2 into cyclic carbonates

“…44 We also noticed that our as-developed catalyst is more active than metal-free phosphonium-based iPOPs and cobalt porphyrin-based iPOPs containing quaternary phosphonium salts (Table 1, entries 12-14). [45][46][47] Also, the catalytic activity of AlPor-QP@POP is superior to that of AlPor-PIP-Br with imidazolium-based ILs under identical conditions (Table 1, entry 15). 17 It follows that quaternary phosphonium salts are embedded in the porphyrin networks and thus bring about an excellent synergistic catalysis of nucleophilic halogen anions and Lewis acidic metal centers.…”