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) polyamines 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, Mössbauer). 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 NOxwith ammonia and the hydrogenation, dehydration and oxidative dehydrogenation of small hydrocarbons and oxygenates.
Original languageEnglish
Title of host publicationInsights into the Chemistry of Organic Structure-Directing Agents in the Synthesis of Zeolitic Materials
EditorsLuis Gómez-Hortigüela
Place of PublicationCham
PublisherSpringer International Publishing
Number of pages22
ISBN (Print)978-3-319-74289-2
Publication statusPublished - 2018

Publication series

NameStructure and Bonding Series

ID: 5020158