Title: Ligand Insertion in MOF-74 as Effective Design for Oxidation of Ethane to Ethanol

Journal Article · · Journal of Physical Chemistry. C

We report that efficient conversion of ethane into valuable materials is important with the availability of new natural gas resources. Recently, metal–organic frameworks (MOFs) with open iron sites (i.e., Fe0.1Mg1.9-MOF-74) have been shown to be promising material for catalyzing ethane to ethanol. In this computational study, various size-matching ligands are inserted into the Fe0.1Mg1.9-MOF-74 structure to further optimize this reaction. Our density functional theory calculations show that the presence of ligands enhances the binding affinity of the oxygen atoms of N2O to the iron atoms in the framework, thereby leading to an improvement in the oxidizing process. Furthermore, the reaction pathways for the new structures show reduced enthalpy barrier in the rate-determining step in the oxidation of ethane reaction cycle compared to the original Fe0.1Mg1.9-MOF-74. In conclusion, these findings provide ways in which the performance of the Fe0.1Mg1.9-MOF-74 can be optimized for next-generation catalysts.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1543654
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 40 Vol. 122; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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