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Modification of the Mg/DOBDC MOF with Amines to Enhance CO2 Adsorption from Ultradilute Gases
Abstract
The MOF Mg/DOBDC has one of the highest known CO2 adsorption capacities at the low to moderate CO2 partial pressures relevant for CO2 capture from flue gas but is difficult to regenerate for use in cyclic operation. In this work, Mg/DOBDC is modified by functionalization of its open metal coordination sites with ethylene diamine (ED) to introduce pendent amines into the MOF micropores. DFT calculations and experimental nitrogen physisorption and thermogravimetric analysis suggest that 1 ED molecule is added to each unit cell, on average. This modification both increases the material's CO2 adsorption capacity at ultradilute CO2 partial pressures and increases the regenerability of the material, allowing for cyclic adsorption-desorption cycles with identical adsorption capacities. This is one of the first MOF materials demonstrated to yield significant adsorption capacities from simulated ambient air (400 ppm CO2), and its capacity is competitive with the best-known adsorbents based on amine-oxide composites.
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Cites
Metal-organic framework materials as catalysts
Lee, J., Farha, O. K., Roberts, J., Scheidt, K. A., Nguyen, S. T., & Hupp, J. T. (2009) · Chemical Society Reviews · doi:10.1039/b807080f · Cited by 7,969
Stuckert, A. N., & Yang, R. T. (2011) · Environmental Science & Technology · doi:10.1021/es202647a · Cited by 289
Cited by
Direct Capture of CO2 from Ambient Air
Sanz-Pérez, E. S., Murdock, C. R., Didas, S. A., & Jones, C. W. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00173 · Cited by 2,406
Self-citationRecycling of carbon dioxide to methanol and derived products – closing the loop
Goeppert, A., Czaun, M., Jones, J.-P., Surya Prakash, G. K., & Olah, G. A. (2014) · Chem. Soc. Rev. · doi:10.1039/c4cs00122b · Cited by 1,528
Air as the renewable carbon source of the future: an overview of CO2 capture from the atmosphere
Goeppert, A., Czaun, M., Surya Prakash, G. K., & Olah, G. A. (2012) · Energy & Environmental Science · doi:10.1039/c2ee21586a · Cited by 724
Sorbents for the Direct Capture of CO 2 from Ambient Air
Shi, X., Xiao, H., Azarabadi, H., Song, J., Wu, X., Chen, X., & Lackner, K. S. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.201906756 · Cited by 679
Understanding the Effect of Water on CO2 Adsorption
Kolle, J. M., Fayaz, M., & Sayari, A. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00762 · Cited by 523
Metadata
- Authors
- Choi, S., Watanabe, T., Bae, T.-H., Sholl, D. S., & Jones, C. W.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-04-15
- Volume
- 3
- Issue
- 9
- Pages
- 1136-1141
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2074445234
- Cited by
- 352
- References
- 2
- FWCI
- 40.67
- Type
- journal article
- Language
- en
- Open access
- closed
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- Choi, S., Watanabe, T., Bae, T.-H., Sholl, D. S., & Jones, C. W. (2012). Modification of the Mg/DOBDC MOF with Amines to Enhance CO2 Adsorption from Ultradilute Gases. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz300328j
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