Metal Complexes as Structure-Directing Agents for Zeolites and Related Microporous Materials

Abigail E. Watts, Alessandro Turrina, Paul A. Wright*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

Metal complexes can act as structure-directing agents (SDAs) for zeolites and zeotypes, either alone or together with additional SDAs in dual-templating approaches. Such complexes include organometallic cobaltocenium ions, alkali metal crown ether complexes, first-row transition-metal (Fe, Co, Ni, Cu) poly-amines and thiol-complexed second-and third-row transition metals (Pd, Pt). Their inclusion has been demonstrated in some cases by crystallographic methods but more commonly by spectroscopy (UV-visible, X-ray absorption, M€ossbauer). The unique feature of this class of template is that they can not only direct crystallisation but also give solids with homogeneously distributed metal cations or metal oxide species upon calcination, precluding the need for an additional post-synthesis modification step. Materials prepared via this ‘one-pot’ synthetic route have been shown to give shape-selective catalysts for reactions such as the selective catalytic reduction of NOx with ammonia and the hydrogenation, dehydration and oxidative dehydrogenation of small hydrocarbons and oxygenates.

Original languageEnglish
Title of host publicationStructure and Bonding
PublisherSpringer Science and Business Media
Pages179-200
Number of pages22
DOIs
Publication statusPublished - 2017

Publication series

NameStructure and Bonding
Volume176
ISSN (Print)0081-5993
ISSN (Electronic)1616-8550

Keywords

  • Catalysts
  • Metal complexes
  • One-pot synthesis
  • Structure-directing agents
  • Templates
  • Zeolites
  • Zeotypes

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