From Discrete Molecular Cages to a Network of Cages Exhibiting Enhanced CO2 Adsorption Capacity. (30th May 2017)

• Record Type: Journal Article
• Authors: Zhang, Lei; Xiang, Long; Hang, Cheng; Liu, Wenlong; Huang, Wei; Pan, Yichang
• Is Part Of: Angewandte Chemie. Volume 129:Number 27(2017)
• Page Start: 7895
• Page End: 7899
• Publication Date: 2017-05-30
• Subjects: Hierarchische poröse Materialien -- Käfigverbindungen -- Kohlendioxidspeicherung -- Natrium -- Schiff-Basen; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201702399
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: 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 CO2 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 CO2 adsorption enthalpy making it a good candidate for porous materials with both high CO2 storage and low adsorption enthalpy.