Interzeolite conversion of a micronsized FAU to a nanosized CHA zeolite free of organic structure directing agent with a high CO2capacity

Kristoffer Hauberg Møller, Maxime Debost, Louwanda Lakiss, Søren Kegnæs*, Svetlana Mintova

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The interzeolite transformation of a micronsized FAU zeolite to a nanosized CHA zeolite via alkali treatment is presented. The impact of the selection of the FAU zeolite starting material on the properties of the produced CHA zeolite was analyzed by XRD, ICP, SEM, TEM, N2 and CO2 adsorption, and in situ FT-IR. The analysis showed that the choice of starting FAU zeolite had a large impact on the chemical composition, size, morphology, and porosity of the produced CHA zeolite. The as prepared CHA samples show high capacity toward CO2 (4.26 mmol g-1) and it was demonstrated that the chemisorbed vs. physisorbed CO2 was controlled by varying the amount of alkali cations in the CHA zeolite. This journal is

Original languageEnglish
JournalRSC Advances
Volume10
Issue number70
Pages (from-to)42953-42959
ISSN2046-2069
DOIs
Publication statusPublished - 2020

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