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Structure-activity correlations and solid-state kinetic investigations of iron oxide-based catalysts supported on SBA-15

Nina Sharmen Genz

ISBN 978-3-8325-4924-4
257 pages, year of publication: 2019
price: 44.00 €
In this book, iron oxidic species supported on nanostructured silica (SBA-15) are introduced as model catalysts for deducing structure-activity correlations in selective oxidation of propene. Influence of iron loading, Fe(III) precursor, powder layer thickness during calcination, and molybdenum addition on structure and activity of FexOy/SBA-15 catalysts is investigated.

FexOy/SBA-15 catalysts are characterized ex situ and in situ by a multitude of analyzing methods, i.e. XRD, DR-UV-Vis spectroscopy, N2 physisorption, Raman and Mössbauer spectroscopy, GC-MS, X-ray absorption spectroscopy, and TPR. Moreover, applicability of solid-state kinetic analysis methods to supported iron oxidic species is shown. Results from solid-state kinetic analysis under non-isothermal conditions are particularly helpful in corroborating structure-activity correlations of FexOy/SBA-15 catalysts. Understanding the correlation of various synthesis parameters with structure and activity of FexOy/SBA-15 catalysts eventually permits obtaining improved green iron oxide catalysts for selective oxidation of propene.

Keywords:
  • Heterogeneous catalysis
  • Supported metal oxides
  • Solid-state kinetic analysis
  • Selective oxidation
  • X-ray absorption spectroscopy

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