Exploring the Tunability of Trimetallic MOF Nodes for Partial Oxidation of Methane to Methanol.
Melissa BaronaRandall Q SnurrPublished in: ACS applied materials & interfaces (2020)
Density functional theory is used to study the tunability of trigonal prismatic SBUs found in metal-organic frameworks (MOFs) such as MIL-100, MIL-101, and PCN-250/MIL-127 of chemical composition M3+2M2+(μ3-O)(RCOO)6 for the partial oxidation of methane to methanol. We performed a combinatorial screening by varying the composition of the trimetallic node (M13+)2(M22+) (where M1 and M2 = V, Cr, Mn, Fe, Co, and Ni) and calculated the reaction pathway on both M1 and M2 sites. The systematic replacement of metals in the trimetallic cluster allowed us to study the influence of spectator atoms on the catalytic activity of a specific metal site in the cluster toward the N2O activation and C-H bond activation steps of the reaction. In the screening, we identified the top-performing node compositions with predicted barriers lower than those already reported for experimentally tested MOFs with trigonal prismatic SBUs. This work demonstrates the opportunity to tune the catalytic activity of MOFs for redox reactions by changing their metal node composition.
Keyphrases
- metal organic framework
- density functional theory
- lymph node
- carbon dioxide
- electron transfer
- squamous cell carcinoma
- molecular dynamics
- risk assessment
- early stage
- radiation therapy
- sentinel lymph node
- ionic liquid
- climate change
- drinking water
- neoadjuvant chemotherapy
- health risk
- visible light
- solid phase extraction