Cuvillier Verlag

35 Jahre Kompetenz im wissenschaftlichen Publizieren
Internationaler Fachverlag für Wissenschaft und Wirtschaft

Cuvillier Verlag

De En Es
Novel Ammoxidation Catalysts based on Vanadium Containing Oxynitrides

Printausgabe
EUR 26,60 EUR 25,27

E-Book
EUR 0,00

Download
PDF (3,1 MB)
Open Access CC BY 4.0

Novel Ammoxidation Catalysts based on Vanadium Containing Oxynitrides

Impact of Structure on the Catalytic Performance

Christiane Janke (Autor)

Vorschau

Inhaltsverzeichnis, Datei (40 KB)
Leseprobe, Datei (110 KB)

ISBN-13 (Printausgabe) 3954040379
ISBN-13 (Printausgabe) 9783954040377
ISBN-13 (E-Book) 9783736940376
Sprache Englisch
Seitenanzahl 154
Umschlagkaschierung glänzend
Auflage 1 Aufl.
Band 0
Erscheinungsort Göttingen
Promotionsort Rostock
Erscheinungsdatum 28.02.2012
Allgemeine Einordnung Dissertation
Fachbereiche Chemie
Beschreibung

The potential of a new catalyst class based on vanadium containing oxynitrides has been explored in the ammoxidation of 3-picoline (3-PIC) to 3-cyanopyridine (3-CP). So far, mixed oxides of the type SbVTiSiO belong to the best catalysts for this reaction, however, space-time yields (STY) did not exceed 150 g/lh. Improving STY while maintaining high 3-CP selectivity would be energetically most sustainable. Therefore, ternary VAlZrON and VZrPON, binary VMoON and VSbON oxynitrides as well as VMON/MoxOyNz (M = Al or Zr) catalysts have been investigated for their catalytic performance and structure-reactivity relationships. With VZrAlON catalysts, highest STY values ever measured have been obtained, while VSbON catalysts bear a great potential, too. By spectroscopic multimethod analysis, applied ex and in situ, structure-reactivity relationships have been proposed. The presence of direct V-N junctions and anionic surface defects are essential for high nitrile selectivity. This is the best fulfilled for VZrAlON, VMoON and VSbON catalysts.