Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 1, Pages 455-463Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b13216
Keywords
UTSA-16; metal-organic frameworks; dry carbon-dioxide capture; wet carbon-dioxide capture; MOE-74; postcombustion; temperature swing adsorption
Funding
- European Union [608534]
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Water is the strongest competitor to CO2 in the adsorption on microporous materials, affecting their performances as CO2 scrubbers in processes such as postcombustion carbon capture. The metal-organic framework (MOF) UTSA-16 is considered a promising material for its capacity to efficiently capture CO2 in large quantities, thanks to the presence of open metal sites (OMSs). It is here shown that UTSA-16 is also able to desorb fully water already at room temperature. This property is unique from all the other materials with OMSs reported so far. UTSA-16 retains indeed the 70% of its CO2 separation capacity after admittance of water in a test flow, created to simulate the emissions from a real postcombustion carbon capture process. This important aspect not yet observed for any other amine-free material, associated with a high material stability tested for 160 cycles and a small temperature swing necessary for regeneration, places UTSA-16 in the restrict number of systems with a real technological future for CO2 separation.
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