Defect formation in metal–organic frameworks initiated by the crystal growth-rate and effect on catalytic performance

Catalytic Activity of Ferrates (NiFe2O4, ZnFe2O4 and CoFe2O4) on the Thermal Decomposition of Ammonium Perchlorate

“…Besides, the T LDP of AP disappeared and the T HDP decreased to the maximum degree after mixed with CoFe 2 O 4 , demonstrating the excellent catalytic activity of CoFe 2 O 4 for AP thermal decomposition. The catalytic activity of NiFe 2 O 4 and CoFe 2 O 4 is better than that of ZnFe 2 O 4 and can be attributed to the smaller crystallite size, which owned more crystal defects that are beneficial to the thermal decomposition of AP . Additionally, the excellent catalytic performance of CoFe 2 O 4 and NiFe 2 O 4 samples may also be related to their hollow structure and larger surface area, which are favorable to increase the active catalytic sites and diffusion rate of reaction molecules .…”

“…However, the low thermal decomposition peak temperature (T LDP ) and T HDP of AP changed significantly after different ferrates addition (see Table 1). and can be attributed to the smaller crystallite size, which owned more crystal defects that are beneficial to the thermal decomposition of AP [32]. Additionally, the excellent catalytic performance of CoFe 2 O 4 and NiFe 2 O 4 samples may also be related to their hollow structure and larger surface area, which are favorable to increase the active catalytic sites and diffusion rate of reaction molecules [33].…”

Effect of metal–ligand ratio on the CO2 adsorption properties of Cu–BTC metal–organic frameworks

“…These approaches likely create defects in the form of missing organic linkers and/or metal sites in the MOF structures. [38][39][40][41][42] For example, organic ligand defects can increase the surface areas and porosity of MOFs. 43 In fact, the presence of defects in MOFs is difficult to be quantitatively evaluated.…”

MIL-101(Cr) for CO2 Conversion into Cyclic Carbonates, Under Solvent and Co-Catalyst Free Mild Reaction Conditions

“…The presence of this high amount of strong acid sites in MIL-101(Cr) can be applied to elucidate the high catalytic performance of MIL-101 for the cycloaddition of carbon dioxide with epoxides in comparison with other reported MOFs. Recently, it was reported that the defect structure in MOFs plays an active role as active sites in a catalyst [51]. Herein, the defect structures present in MIL-101(Cr) could participate as well and result in an excellent catalytic performance under mild conditions.…”