Co-Ru/NaY catalyst: Advanced catalytic system for selective CO hydrogénation

L. Guczi, G. Stefler, Z. Koppány, Veikko Komppa, Matti Reinikainen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Co/NaY, Ru/NaY and Co-Ru/NaY samples have been prepared, characterized and studied in the CO hydrogénation. On one hand, synergism of ruthenium on cobalt in Co-Ru/NaY(I) sample was established, i.e. 0.4 wt % Ru on 4.1 wt % Co in NaY zeolite caused an increase in the rate and in the oxygenate selectivity in CO/Ha reaction at 21 bar, while CU2 formation was fully suppressed. On the other hand, the effect of pretreatment on the rate and selectivity of Ru/NaY and Co-Ru/NaY(II) catalysts have been investigated. Direct oxidation of the ion exchanged Ru/NaY caused migration of RuU2 particles to external surface of NaY, thus, enhanced metal particle size and olefin formation, whereas no oxygenates were formed in the reaction performed at 1 bar pressure. Ruthenium nanoparticles were formed and stabilized either by He treatment or/and by added cobalt, and only a slight change was observed in the reaction parameters. The phenomenon is interpreted by the location and the size of the metal particles in NaY zeolite.

Original languageEnglish
Pages (from-to)209-214
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume121
Publication statusPublished - 1999

Fingerprint

Zeolites
Ruthenium
Carbon Monoxide
Cobalt
Metals
metal particles
catalysts
ruthenium
Catalysts
Alkenes
cobalt
selectivity
Olefins
Particle size
Ions
Nanoparticles
pretreatment
Oxidation
alkenes
nanoparticles

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Co-Ru/NaY catalyst : Advanced catalytic system for selective CO hydrogénation. / Guczi, L.; Stefler, G.; Koppány, Z.; Komppa, Veikko; Reinikainen, Matti.

In: Studies in Surface Science and Catalysis, Vol. 121, 1999, p. 209-214.

Research output: Contribution to journalArticle

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AU - Komppa, Veikko

AU - Reinikainen, Matti

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