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Finding and Evaluating of Adequate Adsorbents for the Adsorption of CO 2 from Humid Gas Streams
Author(s) -
CastroGonzales Lenny,
Kimmerle Klaus,
Schippert Egbert,
Fickinger Daniel
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600094
Subject(s) - adsorption , zeolite , amine gas treating , water vapor , streams , chemical engineering , mcm 41 , molecule , molecular sieve , materials science , chemistry , organic chemistry , catalysis , computer network , computer science , engineering
By studying the literature adsorbent materials were identified that are suitable for the physical and/or chemical adsorption of anthropogenic CO2 from gas streams that are nearly saturated with water vapor. Promising adsorbents (silica Tri‐PE‐MCM‐41, Zeolite 5 A BF, MOF Mg(DOBDC), MOF Basolite C300, and 3‐Aminopropyl‐functionalized silica) were investigated regarding their behavior in breakthrough experiments with CO2 and water vapor. Only the amine‐functionalized silica Tri‐PE‐MCM‐41, if preloaded with water, has suitable properties for this application. This is also the case for pelletized Tri‐PE‐MCM‐41, considering an industrial application. The thermodynamic analysis of pure CO2 adsorption using the ALIc model shows that the strongest binding forces between the CO2 molecule and the adsorbent wall are present during the adsorption of CO2 onto Tri‐PE‐MCM‐41. Differential and integral enthalpies of the system CO2/Zeolite 5ABF also show the strong affinity of this adsorbent/adsorptive system.