Isomerization of β-pinene oxide over Sn-modified zeolites

Päivi Mäki-Arvela, Narendra Kumar, Sara Faten Diáz, Atte Aho, Mikko Tenho, Jarno Salonen, Anne-Riikka Leino, Krisztian Kordás, Pekka Laukkanen, Johnny Dahl, Iliya Sinev, Tapio Salmi, Dmitry Yu Murzin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Abstract

Four different Sn modified zeolites, namely three Beta zeolites with varying SiO2/Al2O3 ratio along with Sn-Y were synthesized, and characterized by XRD, TEM, SEM, pyridine adsorption desorption, nitrogen adsorption, XPS and EXAFS. Kinetics in β-pinene oxide isomerization into myrtanal was studied at 70°C in toluene as a solvent with different catalysts. The initial isomerization rate increases with increasing acidity. Complete conversion of β-pinene oxide was achieved with the three most acidic catalysts within 30 min, whereas only 72% conversion in 1440 min was obtained with the catalyst exhibiting the lowest acidity, Sn-Beta-300. The catalyst most selective to the formation of myrtanal was Sn-Beta-300 giving 64% selectivity at 72% conversion, which is related to low amounts of acid sites.

Original languageEnglish
Pages (from-to)228-237
Number of pages10
JournalJournal of Molecular Catalysis A: Chemical
Volume366
DOIs
Publication statusPublished - Jan 2013
MoE publication typeA1 Journal article-refereed

Keywords

  • Isomerization
  • Terpene epoxide
  • Tin
  • Zeolite

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