Hierarchical Zeolites with Amine-Functionalized Mesoporous Domains for Carbon Dioxide Capture

Tien Hoa Nguyen, Sungjune Kim, Minyoung Yoon, Tae Hyun Bae

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

To prepare materials with high CO2 adsorption, a series of hierarchical LTA zeolites possessing various mesopore spaces that are decorated with alkylamines was designed and synthesized. The highest CO2 uptake capacity was achieved when (3-aminopropyl)trimethoxysilane (APTMS) was grafted onto the hierarchical LTA zeolite having the largest mesopores. Owing to the contributions of both alkylamine groups grafted onto the mesopore surfaces and active sites in the LTA zeolites, the amount of CO2 that can be taken up on these materials is much higher than for conventional aminosilicas such SBA-15 and MCM-41. Furthermore, the adsorbent shows good CO2 uptake capacity and recyclability in dynamic flow conditions.

Original languageEnglish
Pages (from-to)455-461
Number of pages7
JournalChemSusChem
Volume9
Issue number5
DOIs
StatePublished - 8 Mar 2016

Keywords

  • amines
  • carbon storage
  • hierarchical zeolite
  • mesoporous materials
  • zeolites

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