Effects of ion exchange on the structure of ETS-10

Y K Krisnandi, E E Lachowski, R F Howe

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

A detailed characterization study is reported of ETS-10 subjected to ammonium ion exchange and subsequent sodium ion back exchange. It is shown that although such ion exchange leaves the crystallinity of ETS-10 measured by X-ray powder diffraction unchanged, other techniques reveal that the structure becomes locally damaged. In particular, there is partial dissolution of silica from the outer regions of ETS-10 crystallites under low pH conditions, exposing titania-rich surface sites and substantially modifying the photoreactivity of the material.

Original languageEnglish
Pages (from-to)928-933
Number of pages6
JournalChemistry of Materials
Volume18
Issue number4
DOIs
Publication statusPublished - 21 Feb 2006

Keywords

  • microporous titanosilicateETS-10
  • ray-absorption spectroscopy

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