Solid-state ion exchange in zeolites: Part I. Alkaline chlorides/ZSM-5

H. K. Beyer, H. G. Karge, G. Borbély

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Abstract

Mixtures of solid alkaline chlorides MeCl (Me = Li, Na, K, Rb, Cs) and NH4-ZSM-5 or H-ZSM-5 react at elevated temperatures to evolve gaseous hydrogen chloride and form the respective cationic form of ZSM-5. The strong acidic OH groups are completely and the nonacidic ones partially removed, as evidenced by i.r. Thermogravimentic analysis, titration of the evolved gases, and temperatureprogrammed gas evolution monitored by mass spectrometry render the discrimination between a lowtemperature and a high-temperature exchange reaction possible. Evaluation of the analytical data shows good agreement between the aluminum content of the framework and the amount of neutralizing cations.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalZeolites
Volume8
Issue number1
DOIs
Publication statusPublished - Jan 1988

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Keywords

  • Solid-state ion exchange
  • ZSM-5

ASJC Scopus subject areas

  • Environmental Science(all)

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