Deactivation of vanadia-based commercial SCR catalysts by polyphosphoric acids

Commercial vanadia-based SCR monoliths have been exposed to flue gases in a pilot-scale setup into which phosphoric acid has been added and the deactivation has been followed during the exposure time. Separate measurements by SMPS showed that the phosphoric acid formed polyphosphoric acid aerosols,...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Applied catalysis. B, Environmental Environmental, 2008-09, Vol.83 (1-2), p.110-122
Hauptverfasser:	Castellino, Francesco, Rasmussen, Søren Birk, Jensen, Anker Degn, Johnsson, Jan Erik, Fehrmann, Rasmus
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis Chemistry EPR Exact sciences and technology General and physical chemistry Polyphosphoric acid SCR catalyst deactivation SMPS Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Vanadia
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Commercial vanadia-based SCR monoliths have been exposed to flue gases in a pilot-scale setup into which phosphoric acid has been added and the deactivation has been followed during the exposure time. Separate measurements by SMPS showed that the phosphoric acid formed polyphosphoric acid aerosols, which were characterized by particle number concentrations in the order of 1×1014#/m3 at 350°C and diameters
ISSN:	0926-3373 1873-3883
DOI:	10.1016/j.apcatb.2008.02.008