Uptake of 35S by Pd, Ir, Ru promoted Mo-oxide catalysts and their activity in cyclohexanol transformation

M. Dobrovolszky, Z. Paál, P. Tétényi

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15 Citations (Scopus)

Abstract

Initial stages of sulphurization of Pd, Ir, Ru-promoted Mo/Al2O3 have been investigated using H352S in a microcatalytic pulse system. Sulphur uptake of the catalysts as well as its effect on the transformation of cyclohexanol were monitored. Two types of retained sulphur can be distinguished: reversible which can be removed by hydrogen and/or by cyclohexanol pulses and irreversible which cannot. Hardly any sulphur was incorporated into an unpromoted Mo-Al2O3 causing practically no change in the catalytic behaviour. The hydrogenation and dehydrogenation selectivity of promoted catalysts decreased sharply as a function of the retained sulphur and did not change further after ca. 30-40% of the promoter atoms are sulphided.

Original languageEnglish
Pages (from-to)113-120
Number of pages8
JournalCatalysis Today
Volume9
Issue number1-2
DOIs
Publication statusPublished - Mar 26 1991

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Cyclohexanols
Sulfur
Oxides
Catalysts
Catalyst selectivity
Dehydrogenation
Hydrogenation
Hydrogen
Atoms

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Uptake of 35S by Pd, Ir, Ru promoted Mo-oxide catalysts and their activity in cyclohexanol transformation. / Dobrovolszky, M.; Paál, Z.; Tétényi, P.

In: Catalysis Today, Vol. 9, No. 1-2, 26.03.1991, p. 113-120.

Research output: Contribution to journalArticle

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