Enhancing activity for carbon dioxide methanation by encapsulating (1 1 1) facet Ni particle in metal–organic frameworks at low temperature

Recent Advances on Metal‐Organic Frameworks in the Conversion of Carbon Dioxide

“…The results showed that the incorporation of small Cu 2 O nanoparticles significantly promotes the catalytic activity of the resulting hybrid MOF with a TOF value of 50 × 10 –3 s –1 at 215 °C, which is much higher than the reported for Ni@MIL‐ 101(Cr) (1.63 × 10 –3 s –1 at 300 °C). [ 149 ] The promoted activity can be attributed to the following factors: (1) The superior photoactivity of Cu 2 O@MOF(Zn)‐1 under UV region provides intrinsic advantages for light adsorption; (2) the small Cu 2 O NPs behaving both as semiconductor and cocatalyst nearby the Zn reduction centers generate a synergistic effect; (3) the incorporation of Cu 2 O NPs increases the charge separation efficiency.…”

Thermocatalytic hydrogenation of CO2 into aromatics by tailor‐made catalysts: Recent advancements and perspectives

“…that usually take up CO 2 through the interaction between CO 2 and the pore, the unique features in MOFs including open metal sites, Lewis basic sites in the organic linkers, covalently‐bound polar functional groups, tunable pore sizes, framework flexibility, and hydrophobicity guaranteed the superior CO 2 adsorption capability and the preferential CO 2 adsorption over other gas molecules, such as N 2 , CH 4 and H 2 O 84 . In addition to the excellent CO 2 capture performance, MOFs with metallic active sites confined in their cavities can be employed as ideal catalysts for CO 2 hydrogenation 85‐87 . Benefiting from the cooperative effects between the MOFs substrates and the metallic active sites, MOFs‐based catalysts exhibited superior catalytic performances compared with the traditional heterogeneous counterparts.…”

Nanoparticle/Metal–Organic Framework Composites for Catalytic Applications: Current Status and Perspective

“…The quantitative volume (less than the MOF pore volume) of the aqueous precursor solution can be readily incorporated into the pores of MOF, which was suspended in a large amount of low-boiling-point hydrophobic solvent, by capillary force and hydrophilic interactions. By using the DSM combined with the reduction with reducing agents, such as H 2 and NaBH 4 , metallic NPs including Pt, Pd, Rh, Ni NPs, and AuNi, RuNi, AuCo, and CuCo bimetallic NPs were successfully immobilized inside the pores of MOFs without aggregation on the external surface of the framework [ 28 , 29 , 30 , 31 , 32 , 33 ].…”

“…Recently, metal or metal oxide NPs incorporated in MOFs have been proved to be effective catalysts for converting CO 2 to valuable chemicals, including CO, CH 4 , CH 3 OH, and light olefins [ 33 , 53 , 54 , 55 , 56 , 57 ]. The Materials of Institute Lavoisior (MIL) and University of Oslo (UiO) families, and their surface modified MOFs were mainly used as supports due to their high thermal stability and high chemical stability in water.…”

“…As shown in Figure 2 , the resulting Cu/ZnO x @MOF catalysts exhibit remarkably higher activity (space-time yield of 2.59 g MeOH kg Cu −1 h −1 ), higher selectivity (100%), and higher stability (>100 h) for methanol synthesis from CO 2 hydrogenation, when compared to the commercial Cu/ZnO/Al 2 O 3 catalyst. Similarly, Lu et al [ 33 ] prepared Ni NPs encapsulated in MIL-101(Cr) composites by double solvent method (DSM) and multiple impregnation method (IM) for CO 2 methanation. The Ni@MIL-101(DSM) catalyst with Ni loading of 20 wt % exhibited surprisingly higher activity for CO 2 methanation than Ni@MIL-101(IM), giving a CH 4 turnover frequency (TOF) value of 1.63 × 10 −3 ·s −1 at 300 °C.…”