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CO 2 Adsorption in SIFSIX‐14‐Cu‐i: High Performance, Inflected Isotherms, and Water‐Triggered Release via Reversible Structural Transformation
Author(s) -
Sensharma Debobroto,
Vaesen Sebastien,
Healy Colm,
Hartmann Jens,
Kathalikkattil Amal Cherian,
Wix Paul,
Steuber Friedrich,
Zhu Nianyong,
Schmitt Wolfgang
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800217
Subject(s) - chemistry , sorption , adsorption , selectivity , porosity , porous medium , chemical engineering , phase (matter) , transformation (genetics) , inflection point , organic chemistry , biochemistry , geometry , mathematics , engineering , gene , catalysis
SIFSIX‐14‐Cu‐i belongs to a family of metal–organic materials (MOMs) with exciting gas‐sorption properties and high technological impact. CO 2 ‐adsorption isotherms are reported for SIFSIX‐14‐Cu‐i revealing very high uptake combined with CO 2 selectivity. Importantly, the isotherms show distinct inflection points that result from CO 2 ‐induced structural transformations and that can be modulated by the CO 2 uptake quantity. The observed behaviour directly relates to the unique structure of this azopyridine‐stabilised compound and gives rise to the highest known working capacity for CO 2 uptake between 0.1 and 1 bar. Furthermore, the synthetic procedures for the reversible transformation of SIFSIX‐14‐Cu‐i to a non‐porous hydrated form are highlighted, and exploit the reversible porous to non‐porous phase transition for instantaneous, moisture‐mediated CO 2 release.
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