X-ray studies of iodine sorption in some silver zeolites

E. R. Vance, D. K. Agrawal

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

After saturation sorption, in a static system, of molecular iodine onto some silver zeolites at 130° C, powder X-ray diffraction analysis revealed sharp reflections due to crystalline α-Agl. However, this α-Agl contained only a fraction of the sorbed iodine and it seems likely that this α-Agl involves "unlocalized" ions such that a continuous three-dimensional network of α-Agl forms in the zeolite channels. Water in the zeolite channels is probably the underlying cause: heating to 200 to 300° C in air destroyed the sharp α-Agl reflections and no such reflections were observed if the sorption was carried out with the zeolites dehydrated beforehand. α-Agl formation was enhanced when the zeolite framework was broken down by heating in air at ≳ 800° C, heating in water or brine at 200° C, or γ-irradiation.

Original languageEnglish (US)
Pages (from-to)1889-1894
Number of pages6
JournalJournal of Materials Science
Volume17
Issue number7
DOIs
StatePublished - Jul 1 1982

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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