CO2 Capture in Dry and Wet Conditions in UTSA-16 Metal–Organic Framework

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• 作者：Alessio Masala ; Jenny G. Vitillo ; Giorgia Mondino ; Carlos A. Grande ; Richard Blom ; Maela Manzoli ; Marc Marshall ; Silvia Bordiga
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2017
• 出版时间：January 11, 2017
• 年：2017
• 卷：9
• 期：1
• 页码：455-463
• 全文大小：493K
• ISSN：1944-8252

文摘

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.