Structural Changes of Silica Mesocellular Foam Supported Amine-Functionalized CO2 Adsorbents Upon Exposure to Steam
Structural Changes of Silica Mesocellular Foam Supported Amine-Functionalized CO2 Adsorbents Upon Exposure to Steam
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DOI：
10.1021/am100786z
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发表时间：
2010-11-01
影响因子：
9.5
通讯作者：
Jones, Christopher W.
中科院分区：
文献类型：
--
作者：
Li, Wen;Bollini, Praveen;Jones, Christopher W.
制备了三类胺功能化介孔泡沫（MCF）材料，并对其作为CO2吸附剂进行了评价。研究了吸附剂在蒸汽/空气和蒸汽/氮气条件下的稳定性，使用Parr高压釜反应器以加速的方式模拟了这些吸附剂在不同温度下蒸汽汽提再生条件下的暴露。蒸汽处理后，在流/空气和流/氮气条件下，所有吸附剂的CO2容量和有机含量都有所下降，这主要是由于MCF框架的结构崩溃，但在恶劣条件下处理期间，胺的降解可能会产生额外的影响。研究发现，与蒸汽/氮气处理相比，蒸汽/空气处理对吸附剂的CO2容量有更大的影响。
Three classes of amine-functionalized mesocellular foam (MCF) materials are prepared and evaluated as CO2 adsorbents. The stability of the adsorbents under steam/air and steam/nitrogen conditions is investigated using a Parr autoclave reactor to simulate, in an accelerated manner, the exposure that such adsorbents will see under steam stripping regeneration conditions at various temperatures. The CO2 capacity and organic content of all adsorbents decrease after steam treatment under both stream/air and stream/nitrogen conditions, primarily due to structural collapse of the MCF framework, but with additional contributions likely associated with amine degradation during treatment under harsh conditions. Treatment with steam/air is found to have stronger effect on the CO2 capacity of the adsorbents compared to steam/nitrogen.