Synthesis of Mn (III)–porphyrin porous coordination polymers as heterogeneous catalysts for CO₂ cycloaddition reaction

Abstract

Two carboxyl‐functional Mn (III)–porphyrins reacted with two metal nitrates (Cr (NO3)3·9H2O and Al (NO3)3·9H2O) via solvothermal method, respectively, to produce four metalloporphyrin‐based metal organic gels (MOGs). To remove unreacted metal salts and DMF, the gels were dealt with Soxhlet extraction and supercritical CO2. Finally, four desired porous coordination polymers (PCPs) were prepared. The newly synthesized PCPs were characterized by FT‐IR, UV–vis, SEM, and TEM. The contrast experiments show these PCPs possess good catalytic activities for the cycloaddition reactions of epoxide and CO2 under mild and solvent‐free conditions using tetrabutylammonium bromide (TBAB) as co‐catalyst.

Benzimidazolium‐Decorated Metalloporphyrin Molecule and Polymer: a Reliable Preparation Method and Application in Catalyzing the Cycloaddition Reaction of CO2and Epoxides

“…Until now, it remains an attractive task to find a convenient and reliable method to synthesize cationic metalloporphyrin molecules and corresponding polymers [39,40] . In this work, two different methods were developed to synthesize the benzimidazolium‐decorated metalloporphyrin 1 ZnIL and 2 ZnIL .…”

A zinc porphyrin polymer as efficient bifunctional catalyst for conversion of CO2 to cyclic carbonates

“…In 2021, Yang and coworkers reported the bifunctional polymers PP-Br-Zn, coincorporated with porphyrin-Zn as Lewis acid and Br À as nucleophiles, that efficiently catalyze the cycloaddition of epichlorohydrin with dilute CO 2 under ambient conditions [33]. Our group is committed to preparing various metalloporphyrin-based porous coordination polymers (PCPs) [35][36][37][38]. In 2020, we reported four Mn-porphyrins-base PCPs that exhibited high catalytic activity under 0.1 MPa CO 2 pressure conditions [38].…”

“…Our group is committed to preparing various metalloporphyrin-based porous coordination polymers (PCPs) [35][36][37][38]. In 2020, we reported four Mn-porphyrins-base PCPs that exhibited high catalytic activity under 0.1 MPa CO 2 pressure conditions [38].…”

Restrictive Regulation of Ionic Liquid Quaternary Ammonium Salt in SBA‐15 Pore Channel for Efficient Carbon Dioxide Conversion

“…Among them, metal/halogen catalysts react with epoxide and CO 2 under mild conditions, resulting in high yields. The synergistic activation of nucleophiles such as halogen anions (Cl À , Br À , I À ) and metal sites such as Lewis acids (like copper, [13] cobalt, [14] zinc, [15] magnesium, [16] zirconium, [17] etc.) can accelerate the ringopening, which can be confirmed by DFT calculation.…”