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Screening the Effect of Water Vapour on Gas Adsorption Performance: Application to CO 2 Capture from Flue Gas in Metal–Organic Frameworks
Author(s) -
Chanut Nicolas,
Bourrelly Sandrine,
Kuchta Bogdan,
Serre Christian,
Chang JongSan,
Wright Paul A.,
Llewellyn Philip L.
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201601816
Subject(s) - adsorption , flue gas , water vapor , metal organic framework , chemistry , relative humidity , metal , humidity , environmental chemistry , thermodynamics , organic chemistry , physics
A simple laboratory‐scale protocol that enables the evaluation of the effect of adsorbed water on CO 2 uptake is proposed. 45 metal–organic frameworks (MOFs) were compared against reference zeolites and active carbons. It is possible to classify materials with different trends in CO 2 uptake with varying amounts of pre‐adsorbed water, including cases in which an increase in CO 2 uptake is observed for samples with a given amount of pre‐adsorbed water. Comparing loss in CO 2 uptake between “wet” and “dry” samples with the Henry constant calculated from the water adsorption isotherm results in a semi‐logarithmic trend for the majority of samples allowing predictions to be made. Outliers from this trend may be of particular interest and an explanation for the behaviour for each of the outliers is proposed. This thus leads to propositions for designing or choosing MOFs for CO 2 capture in applications where humidity is present.