Ring opening of decalin over zeolite-supported iridium catalysts

David Kubička*, Matias Kangas, Narendra Kumar, Marja Tiitta, Marina Lindblad, Dmitry Yu Murzin

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

35 Citations (Scopus)

Abstract

Selective ring opening of decalin was investigated over various metal-modified zeolites in order to shed light on the key parameters affecting the selectivity to ringopening products at low extent of cracking reactions. Ir-modified zeolites H-Y and H-Beta having different concentration and strength of acid sites were studied in a batch reactor at 250-310 °C and 20-60 bar H2 and their performance was compared with that of Pt-modified zeolites. The concentration of Brønsted acid sites, reaction temperature and hydrogen pressure were shown to be the crucial reaction parameters. To obtain high selectivity to formation of ring-opening products from decalin, mildly acidic Ir-modified Beta was the best choice when the reaction was carried out at temperature of 270 °C or lower and at H2 pressure of 60 bar. Under these conditions the selectivity and yield of ring-opening products exceeded 65 and 60%, respectively.

Original languageEnglish
Pages (from-to)1438-1445
Number of pages8
JournalTopics in Catalysis
Volume53
Issue number19-20
DOIs
Publication statusPublished - Dec 2010
MoE publication typeA1 Journal article-refereed

Keywords

  • Decalin
  • Iridium
  • Platinum
  • Ring opening
  • Zeolites

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