DMOF-1 as a Representative MOF for SO2 Adsorption in Both Humid and Dry Conditions
- Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemical & Biomolecular Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
The mixed-ligand metal–organic framework (MOF) DMOF-1 has been successfully synthesized via ligand: 2,3,5,6-tetramethylterephthalic acid (TM), 9,10-anthracenedicarboxylic acid (ADC), 1,4-naphthalenedicarboxylic acid (NDC), 2,5-dimethyl terephthalic acid (DM), and metal (Zn, Cu, Ni, Co) substitutions to develop structure–property relationships for adsorption of water and SO2, an acid gas commonly found in flue gas streams at ppm-level concentrations. The substitution of bulky ligands, TM and ADC, resulted in not only improved water stability but also stability toward dry SO2, whereas substitution with NDC and DM did not provide water or SO2 stability. ADC-functionalized Zn–DMOF exhibited the greatest stability under humid SO2 exposure of the ligand-functionalized materials that were tested. Metal substitution of Cu into the DMOF–TM structure resulted in the greatest stability of the M–DMOF–TM samples upon exposure to humid SO2, and Ni–DMOF–TM provided the second most stable material. Finally, these results follow the prediction of the Irving–Williams series of metal node/ligand bond strengths.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Understanding and Control of Acid Gas-induced Evolution of Materials for Energy (UNCAGE-ME); Georgia Institute of Technology, Atlanta, GA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012577
- OSTI ID:
- 1566518
- Journal Information:
- Journal of Physical Chemistry. C, Vol. 122, Issue 41; ISSN 1932-7447
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Kinetic stability of metal–organic frameworks for corrosive and coordinating gas capture
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journal | September 2019 |
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