Hydrogenative transformations of methylcyclobutane over silica-supported Rh, Ni, Pt and Pd catalysts at different temperatures

Béla Török, M. Bartók

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The effect of temperature on the transformations of methylcyclobutane over silica-supported Rh, Ni, Pt and Pd catalysts was studied in a wide temperature range (323-723 K) in a pulse system. The transformations taking place were cracking (hydrogenolysis), hydrogenative ring opening and ring enlargement. The reaction directions were found to depend strongly on the nature of the metal. Over Pt and Pd, hydrogenative ring opening was the main reaction at all temperatures studied. In contrast, Rh and Ni promoted hydrogenolysis at high temperature, and this reaction occurred exclusively above 573 K. The selectivity data on the ring-opening reaction were different over Pt and Pd from those over Rh and Ni. The ring-opening selectivity (ratio of isopentane to both ring-opened products) was close to statistical over Pt and Pd, while sterically less hindered bond scission was the main direction of the ring opening over Rh and Ni.

Original languageEnglish
Pages (from-to)281-287
Number of pages7
JournalCatalysis Letters
Volume27
Issue number3-4
DOIs
Publication statusPublished - Sep 1994

Fingerprint

Silicon Dioxide
Silica
silicon dioxide
catalysts
Hydrogenolysis
Catalysts
rings
hydrogenolysis
Temperature
temperature
selectivity
Metals
cleavage
products
Direction compound
pulses
metals

Keywords

  • methylcyclobutane
  • ring-opening selectivity
  • side reactions
  • supported Rh, Ni, Pt and Pd catalysts
  • temperature dependence

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Hydrogenative transformations of methylcyclobutane over silica-supported Rh, Ni, Pt and Pd catalysts at different temperatures. / Török, Béla; Bartók, M.

In: Catalysis Letters, Vol. 27, No. 3-4, 09.1994, p. 281-287.

Research output: Contribution to journalArticle

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