Understanding zeolite catalysis: Inverse shape selectivity revised

Merijn Schenk, Sofia Calero, Theo L.M. Maesen, Lucas L. Van Benthem, Martijn G. Verbeek, Berend Smit

Research output: Contribution to journalArticleAcademicpeer-review

34 Citations (Scopus)

Abstract

Doing a stretch in zeolites: Usually molecular sieves selectively process and yield the fastest diffusing, least bulky molecule. When sieves were identified that seemed to selectively yield, adsorb, and stabilize isomers with a larger diameter, the term "inverse shape selectivity" was coined. Molecular simulations indicate that these sieves preferentially yield molecules because of entropic effects, which favor those molecules that have the shortest effective length. In narrow zeolite pores linear molecules are stretched whereas in wide pores they can be coiled (see diagram).

Original languageEnglish
Pages (from-to)2499-2502
Number of pages4
JournalAngewandte Chemie - International Edition
Volume41
Issue number14
DOIs
Publication statusPublished - 15 Jul 2002
Externally publishedYes

Keywords

  • Alkenes
  • Heterogeneous catalysis
  • Molecular modeling
  • Shape selectivity
  • Zeolites

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