Environment-friendly, co-catalyst- and solvent-free fixation of CO₂ using an ionic zinc(ii)–porphyrin complex immobilized in porous metal–organic frameworks

Abstract

Development of a heterogeneous catalyst composed of a [Zn(ii)NMeTPyP]4+[I−]4 complex immobilized in PCN-224 for environment-friendly, co-catalyst-free fixation of CO2 is reported.

Conversion of CO2 into Chloropropene Carbonate Catalyzed by Iron (II) Phthalocyanine Hypercrosslinked Porous Organic Polymer

“…The catalytic activity of FePc-POP was compared with those reported for some heterogeneous porphyrin- [ 19 , 20 , 21 , 22 , 23 , 38 , 39 , 40 , 41 ] or phthalocyanine-based [ 42 , 43 ] catalysts in the cycloaddition of CO 2 to ECH ( Table 3 ). The Mg porphyrin based catalysts (entries 1 and 2) work with very high substrate/metal ratios which result in very high TON values but higher CO 2 pressures and temperatures are needed to achieve total conversion.…”

Effective visible‐light CO2 photoreduction over (metallo)porphyrin‐based metal–organic frameworks to achieve useful hydrocarbons

“…In contrast, higher CO 2 uptake for PCN‐222(M) (M = Fe, Co, Ni, and Cu) was observed (37, 35, 39, and 36 cm 3 g −1 ), respectively (Figure 4). According to the previous literature reports, [ 26,33–36 ] the values of the heat of adsorption ( Q st ) for CO 2 were estimated, implying that PCN‐222 and PCN‐222(M) have a high affinity for CO 2 which can improve the photocatalytic reaction.…”

Heterogenisation of polyoxometalates and other metal-based complexes in metal–organic frameworks: from synthesis to characterisation and applications in catalysis

“…130 The cationic Zn(II) porphyrin complex [Zn II NMeTPyP] 4+ (NMeTPyP = 5,10,15,20-tetrakis(1methylpyridinium-4'-yl)porphyrin) was also immobilised in the Zr porphyrinic MOF PCN-224 together with its iodide counterions as shown by EDS analysis. 167 In the CoW12@ZIF-8 composite prepared by synthetic encapsulation, the absence of K + counterions (although present in the POM precursor) is evidenced by elemental analysis and the authors propose that charge compensation of the [CoW12O40] 6-POM is ensured by solution protons trapped by the composite. 203 The localisation of the protons is however not discussed.…”