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Title: Hydrophobic pillared square grids for selective removal of CO 2 from simulated flue gas

Capture of CO2 from flue gas or air is considered as feasible way to reduce the anthropogenic emission of CO2. Herein we reported the impact of metal substitution on tuning the physicochemical properties in isostructural family of metal organic materials (MOMs) based on pyrazine as organic linker, hexaflouro silicate as anionic pillar and Zn, Cu, Ni and Co as metal centres. Two new isostructural square grid networks namely SIFSIX-3-Ni and SIFSIX-Co are fully characterized and compared with the parent Zn(II) and Cu(II). Interestingly the new Ni(II) and Co (II) analogues higher loading capacity for CO2 at 0.15 bar and higher CO2/N2 selectivity at condition relevant to flue gas separation. Our data show that a small change in the structure could lead to dramatic enhancement in the physicochemical properties of MOMs.
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Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 1359-7345; KC0203020
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: ChemComm; Journal Volume: 51; Journal Issue: 85
Royal Society of Chemistry
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Org:
Country of Publication:
United States