Syntheses, characterization and catalytic activities of CaAl-layered double hydroxide intercalated Fe(III)-amino acid complexes

Research output: Contribution to journalArticle

Abstract

Synthesis of intercalated composites were carried out using CaAl-LDH (layered double hydroxide) as host and the anionic form of Fe(III)-amino acid complexes as guest materials. Intercalation was attempted with two methods either introducing the preformed complexes or constructing the complex among the layers of the LDH. After optimization of the synthesis parameters, structural characterization was performed by X-ray diffractometry, scanning electron microscopy as well as mid and far infrared spectroscopies. Quantitative data about the intercalated complexes were collected by chemical analysis and X-ray absorption spectroscopy investigating the near edge region as well as the extended fine structure. Structural models based on characterization measurements are also given. Catalytic activities, selectivities and recycling abilities of the substances were studied in the oxidation reactions of cyclohexene with peracetic acid and . in situ formed iodosylbenzene as oxidants in the liquid phase. The catalysts were active in the Ullmann-type etherification coupling reaction as well. The intercalated substances were found to be efficient and highly selective catalysts with very good recycling abilities.

Details

Authors
  • Gábor Varga
  • Zita Timár
  • Szabolcs Muráth
  • Zoltán Kónya
  • Ákos Kukovecz
  • Stefan Carlson
  • Pál Sipos
  • István Pálinkó
Organisations
External organisations
  • University of Szeged
  • Hungarian Academy of Sciences
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Materials Chemistry

Keywords

  • Catalytic properties, Fe(III)-amino acid complexes in CaAl-LDH, Oxidation reactions, Structural characterisation, Ullman-type etherification
Original languageEnglish
Pages (from-to)42-50
JournalCatalysis Today
Volume306
Early online date2016 Aug 26
Publication statusPublished - 2018
Publication categoryResearch
Peer-reviewedYes