Thermodynamic study of alkali and alkaline-earth cation-exchanged natrolites

Lili Wu, Alexandra Navrotsky, Yongmoon Lee, Yongjae Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A series of synthetic natrolites with different non-framework cations (Li-NAT, Na-NAT, K-NAT, Rb-NAT, Cs-NAT, Ca-NAT, Sr-NAT and Pb-NAT) are investigated by high temperature oxide melt solution calorimetry. The formation enthalpy from the component oxides (ΔHf,ox) becomes less exothermic with increasing ionic potential (Z/r) of the cations. The dehydration behavior of NATs is examined using TG-DSC. The strength of water binding decreases with increasing cation size. Similar to the trend seen in anhydrous zeolites, a linear dependence of ΔHf,ox on Al/(Al + Si) ratio for hydrous zeolites is established.

Original languageEnglish
Pages (from-to)221-227
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume167
DOIs
Publication statusPublished - 2013 Jan 1

Fingerprint

Alkalies
Cations
alkalies
Positive ions
Earth (planet)
Thermodynamics
Zeolites
cations
zeolites
thermodynamics
Oxides
oxides
Calorimetry
Dehydration
dehydration
Enthalpy
heat measurement
enthalpy
trends
water

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Cite this

Wu, Lili ; Navrotsky, Alexandra ; Lee, Yongmoon ; Lee, Yongjae. / Thermodynamic study of alkali and alkaline-earth cation-exchanged natrolites. In: Microporous and Mesoporous Materials. 2013 ; Vol. 167. pp. 221-227.
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Thermodynamic study of alkali and alkaline-earth cation-exchanged natrolites. / Wu, Lili; Navrotsky, Alexandra; Lee, Yongmoon; Lee, Yongjae.

In: Microporous and Mesoporous Materials, Vol. 167, 01.01.2013, p. 221-227.

Research output: Contribution to journalArticle

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