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  • Title: An N-rich metal-organic framework with an rht topology: high CO2 and C2 hydrocarbons uptake and selective capture from CH4.
    Author: Liu K, Li B, Li Y, Li X, Yang F, Zeng G, Peng Y, Zhang Z, Li G, Shi Z, Feng S, Song D.
    Journal: Chem Commun (Camb); 2014 May 21; 50(39):5031-3. PubMed ID: 24709806.
    Abstract:
    We report the storage capacities and separation selectivity of an rht-type s-heptazine-based metal organic framework (MOF), [Cu3(TDPAH)(H2O)3]·13H2O·8DMA, 1, (where TDPAH is 2,5,8-tris(3,5-dicarboxylphenylamino)-s-heptazine and DMA is N,N-dimethylacetamide) for C2 hydrocarbons and CO2 over CH4. MOF 1 displays the highest C2H2/CH4 selectivity of 80.9 as well as record high C2H4 and C2H6 adsorption enthalpies. Theoretical calculations reveal that s-heptazine and NH groups within the framework have synergistic effects on CO2 binding.
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