Acetylene hydration on different Cd-zeolites

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Various Cd-zeolite preparations, containing adsorbed water in controlled amounts, were contacted with acetylene in an IR cell at 0.03 bar. The activity of the zeolites was estimated from the formation rate of adsorbed acetaldehyde at 50 °C detected by FTIR. Cd-derivatives of MOR, MFI, and clinoptilolite were prepared by conventional ion exchange and by a novel method which is based on redox reaction between zerovalent cadmium atoms and zeolitic lattice protons upon heating the mixtures of Cd dust and NH4-form of zeolites up to 350 °C. Samples partially ion exchanged in aqueous medium were more active in the formation of acetaldehyde than those which were obtained via solid-state reaction and contained more Cd in the cationic sites of these zeolites. For preparation of Cd-FER, however, the latter method was found to be applicable more advantageously. Cd-X,FAU could not be prepared with Cd dust because of crystal collapse below the temperature of the solid-state redox reaction (in this case at low temperature the so called contact induced ion exchange method was applied using Cd-(NO3)2 ). The activities of Cd 2+ cations are quite different in different zeolites prepared similarly.

Original languageEnglish
Pages (from-to)2831-2838
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume154 C
Publication statusPublished - 2004

Fingerprint

Zeolites
Acetylene
zeolites
acetylene
Hydration
hydration
Acetaldehyde
acetaldehyde
Redox reactions
Dust
Ion exchange
dust
solid state
preparation
ions
Solid state reactions
Cadmium
cadmium
Protons
Positive ions

Keywords

  • Acetylene hydration
  • Cd-zeolites
  • Solid state ion-exchange reactions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Acetylene hydration on different Cd-zeolites. / Onyestyák, G.; Páł, Borbély G.; Kalló, D.

In: Studies in Surface Science and Catalysis, Vol. 154 C, 2004, p. 2831-2838.

Research output: Contribution to journalArticle

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