Structural changes of silica mesocellular foam supported amine-functionalized CO 2 adsorbents upon exposure to steam

Wen Li, Praveen Bollini, Stephanie A. Didas, Sunho Choi, Jeffrey H. Drese, Christopher W. Jones

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

Three classes of amine-functionalized mesocellular foam (MCF) materials are prepared and evaluated as CO 2 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 CO 2 capacity and organic content of all adsorbents decrease after steam treatment under both steam/air and steam/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 CO 2 capacity of the adsorbents compared to steam/nitrogen.

Original languageEnglish (US)
Pages (from-to)3363-3372
Number of pages10
JournalACS Applied Materials and Interfaces
Volume2
Issue number11
DOIs
StatePublished - Nov 24 2010

Keywords

  • CO capture
  • deactivation
  • steam stability
  • supported amine

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