Forty Years of Designing Catalytic and Adsorptive Sites in FAU Type Zeolites at KU Leuven

Johan A. Martens*, Dirk E. De Vos, Christine E. A. Kirschhock, Paolo P. Pescarmona, Bert Sels, Ivo F. J. Vankelecom

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

An overview of scientific achievements at K.U. Leuven on the design and characterization of active sites in X and Y zeolites and on the development of adsorptive and catalytic processes in which these active sites are operated is provided. The historical development of this research area and the scientific progress are presented. Zeolite Y and ultrastabilized specimen present Bronsted and Lewis sites that can be operated in vapor and liquid phase hydrocarbon conversion processes, bifunctional catalysis, epoxidation and ring opening of epoxides. Examples of molecular shape selective catalysis with Y zeolites are presented. The redox chemistry of transition metal exchanged faujasites is understood in great detail and has been exploited in Wacker chemistry and water splitting in a photochemical-thermal cycle. Selective adsorbents were designed based on knowledge of cation siting in X and Y zeolites. The occlusion of coordination compounds in the faujasite supercages is a means of creating unique active sites. Catalytic oxidative properties of the enzymes can be mimicked by embedding zeozyme in a hydrophobic membrane.

Original languageEnglish
Pages (from-to)1119-1130
Number of pages12
JournalTopics in Catalysis
Volume52
Issue number9
DOIs
Publication statusPublished - Aug-2009
Externally publishedYes

Keywords

  • Zeolite X
  • Zeolite Y
  • Catalytic sites
  • Molecular separation
  • Enzyme mimicking
  • EVENT MICROKINETIC MODEL
  • FAUJASITE-TYPE ZEOLITES
  • EXCHANGED Y-ZEOLITES
  • TRANSITION-METAL
  • ALKANE HYDROCONVERSION
  • HYDROGEN-PEROXIDE
  • OXIDATION
  • EPOXIDATION
  • SYSTEM
  • CYCLOPENTADIENE

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