ISSN:
1572-879X
Schlagwort(e):
palladium
;
tin oxides
;
deNOx
;
photodeposition
;
CO adsorption
;
IR
;
UV‐visible DRS
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract High surface area tin dioxide (174 m2/g) has been synthetised and characterised by XRD, TEM and UV‐visible DRS. DRS gives evidence for the formation of oxygen vacancies (donor levels) under reducing conditions. CO adsorption gives rise to terminal carbonyl species linked to Sn4+ and Sn2+. Palladium–tin oxide catalysts have been prepared from various precursors (Pd(acac)2 and Pd(NO3)2) and by different preparation methods (grafting, photodeposition); they are active in deNOx reactions at low temperature (180 °C) in the presence of stoichiometric CO–NO–O2 mixtures. A mechanism involving palladium and oxygen vacancies is proposed.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1019051407087
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