Adsorption of CO 2-containing gas mixtures over amine-bearing pore-expanded MCM-41 silica: Application for CO 2 separation

Youssef Belmabkhout, Rodrigo Serna-Guerrero, Abdelhamid Sayari*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

49 Citations (Scopus)

Abstract

Adsorption of CO 2, N 2, CH 4 and H 2 on triaminegrafted pore-expanded MCM-41 mesoporous silica (TRIPE- MCM-41) was investigated at room temperature in a wide range of pressure (up to 25 bar) using gravimetric measurements. The material was found to exhibit high affinity toward CO 2 in comparison to the other species over the whole range of pressure. Column-breakthrough dynamic measurements of CO 2-containing mixtures showed very high selectivity toward CO 2 over N 2, CH 4 and H 2 at CO 2 concentrations within the range of 5 to 50%. These conditions are suitable for effective removal of CO 2 at room temperature from syngas, flue gas and biogas using temperature swing (TS) or temperature-pressure swing (TPS) regeneration mode. Moreover, TRI-PE-MCM-41 was found to be highly stable over hundreds of adsorption-desorption cycles using TPS as regeneration mode.

Original languageEnglish
Pages (from-to)395-401
Number of pages7
JournalADSORPTION : JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
Volume17
Issue number2
DOIs
Publication statusPublished - Apr 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • Adsorption
  • CO adsorption
  • CO adsorption selectivity
  • CO removal
  • CO separation

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