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From Discrete Molecular Cages to a Network of Cages Exhibiting Enhanced CO 2 Adsorption Capacity
Author(s) -
Zhang Lei,
Xiang Long,
Hang Cheng,
Liu Wenlong,
Huang Wei,
Pan Yichang
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201702399
Subject(s) - adsorption , enthalpy , cage , porosity , sorption , imine , bar (unit) , materials science , physisorption , chemical engineering , chemistry , crystallography , thermodynamics , organic chemistry , composite material , physics , structural engineering , catalysis , meteorology , engineering
We have adopted the concept of “cage to frameworks” to successfully produce a Na–N connected coordination networked cage Na‐NC1 by using a [3+6] porous imine‐linked organic cage NC1 (Nanjing Cage 1) as the precursor. It is found that Na‐NC1 exhibits hierarchical porosity (inherent permanent voids and interconnected channel) and gas sorption measurements reveal a significantly enhanced CO 2 uptake (1093 cm 3 g −1 at 23 bar and 273 K) than that of NC1 (162 cm 3 g −1 under the same conditions). In addition, Na‐NC1 exhibits very low CO 2 adsorption enthalpy making it a good candidate for porous materials with both high CO 2 storage and low adsorption enthalpy.