Tin-containing silicates: structure–activity relations

Christian M. Osmundsen, Martin Spangsberg Holm, Søren Dahl, Esben Taarning

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The selective conversion of biomass-derived substrates is one of the major challenges facing the chemical industry. Recently, stannosilicates have been employed as highly active and selective Lewis acid catalysts for a number of industrially relevant reactions. In the present work, four different stannosilicates have been investigated: Sn-BEA, Sn-MFI, Sn-MCM-41 and Sn-SBA-15. When comparing the properties of tin sites in the structures, substantial differences are observed. Sn-beta displays the highest Lewis acid strength, as measured by probe molecule studies using infrared spectroscopy, which gives it a significantly higher activity at low temperatures than the other structures investigated. Furthermore, the increased acid strength translates into large differences in selectivity between the catalysts, thus demonstrating the influence of the structure on the active site, and pointing the way forward for tailoring the active site to the desired reaction.
Original languageEnglish
JournalProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Issue number2143
Pages (from-to)2000-2016
Publication statusPublished - 2012

Bibliographical note

© 2012 The Royal Society


  • Stannosilicate
  • Biomass
  • Catalysis
  • Zeolite
  • Infrared


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