Exceptional CO<inf>2</inf> working capacity in a heterodiamine-grafted metal-organic framework

Woo Ram Lee, Hyuna Jo, Li Ming Yang, Hanyeong Lee, Dae Won Ryu, Kwang Soo Lim, Jeong Hwa Song, Da Young Min, Sang Soo Han, Jeong Gil Seo, Yong Ki Park, Dohyun Moon, Chang Seop Hong

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Abstract

An amine-functionalized metal-organic framework (MOF), dmen-Mg<inf>2</inf>(dobpdc) (dmen = N,N-dimethylethylenediamine), which contains a heterodiamine with both primary and tertiary amines, was prepared via a post-synthetic method. This material exhibits a significant selectivity factor for CO<inf>2</inf> over N<inf>2</inf> that is commensurate with top-performing MOFs. It is remarkable that the solid is fully regenerated under vacuum or flowing Ar at low desorption temperatures, and following this can take up CO<inf>2</inf> at more than 13 wt%. An exceptionally high working capacity is achieved at low regeneration temperatures and after exposure to humid conditions, which are important parameters for a real post-combustion CO<inf>2</inf> capture process.

Original languageEnglish
Pages (from-to)3697-3705
Number of pages9
JournalChemical Science
Volume6
Issue number7
DOIs
Publication statusPublished - 2015 Jul 1

ASJC Scopus subject areas

  • Chemistry(all)

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    Lee, W. R., Jo, H., Yang, L. M., Lee, H., Ryu, D. W., Lim, K. S., Song, J. H., Min, D. Y., Han, S. S., Seo, J. G., Park, Y. K., Moon, D., & Hong, C. S. (2015). Exceptional CO<inf>2</inf> working capacity in a heterodiamine-grafted metal-organic framework. Chemical Science, 6(7), 3697-3705. https://doi.org/10.1039/c5sc01191d