Title
Tuning metal sites of DABCO MOF for gas purification at ambient conditionsTuning metal sites of DABCO MOF for gas purification at ambient conditions
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Publication type
article
Publication
Amsterdam,
Subject
Physics
Chemistry
Engineering sciences. Technology
Source (journal)
Microporous and mesoporous materials: zeolites, clays, carbons and related materials. - Amsterdam
Volume/pages
201(2015), p. 277-285
ISSN
1387-1811
ISI
000345185200030
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Metalorganic frameworks (MOFs) have emerged as new porous materials for capture and separation of binary gas mixtures. Tuning the metal sites in MOF structures has an impact on properties, which enhance affinity of gas adsorption and selectivity (e.g., surface area, cavity, electric field, etc.). The synthesis and characterization of a M-DABCO series (M = Ni, Co, Cu, Zn) of MOFs are described in this study. The experiments were conducted using multicomponent gas mixtures and the Ideal Adsorbed Solution Theory (IAST) was applied to determine the CO2/CH4 selectivity. Experimental adsorption isotherms were fitted with a model equation to evaluate the characteristic adsorption energy (Isosteric, Qst) of this series. The Ni metal in the M-DABCO series reveals the best performance concerning CO2 adsorption and CH4/CO2 selectivity at ambient conditions based on IAST calculations. The combination of characterizations, calculations and adsorption experiments were used to discuss the metal impact on the adsorption sites in the M-DABCO series at ambient conditions.
E-info
https://repository.uantwerpen.be/docman/iruaauth/22b3c1/26e9eb2f97d.pdf
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