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Influence of the amide groups in the CO2/N2 selectivity of a series of isoreticular, interpenetrated metal-organic frameworks

AuthorsSafarifard, Vahid; Rodríguez-Hermida, Sabina ; Guillerm, Vincent ; Imaz, Inhar ; Morsali, Ali; Maspoch, Daniel
Issue Date2016
PublisherAmerican Chemical Society
CitationCrystal Growth and Design 16(10): 6016-6023 (2016)
AbstractHere we report the use of a pillaring strategy for the design and synthesis of three novel amide-functionalized metal-organic frameworks (MOFs), TMUs-22/-23/-24, isoreticular to the recently reported imine-functionalized TMU-6 and TMU-21 MOFs. An extensive study of their CO sorption properties and selectivity for CO over N, from single gas sorption isotherms to breakthrough measurements, revealed that not only the incorporation of amide groups but also their accessibility is crucial to obtain enhanced CO sorption and CO/N selectivity. Therefore, the MOF with more accessible amide groups (TMU-24) shows a CO/N selectivity value of ca. 10 (as revealed by breakthrough experiments), which is ca. 500% and 700% of the selectivity values observed for the other amide-containing (TMU-22 and TMU-23) and imine-containing (TMU-6 and TMU-21) MOFs.
Identifiersdoi: 10.1021/acs.cgd.6b01054
e-issn: 1528-7505
issn: 1528-7483
Appears in Collections:(CIN2) Artículos
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