Segregation phenomena induced by redox processes in V-Sb-O catalysts

• Autorzy: Bielańska, E. , Najbar, M. , Nizioł, S. , Dziembaj, R. , Witkowski, S.
• Języki publikacji: EN

Abstrakty

EN

Cation segregation induced by redox processes in a model biphasic V-Sb-O catalyst, containing mildly reduced antimony-deficient vanadium antimonate as a major phase and V(2)O(5)-Sb(2)O(4) solid solution as a minor one, was investigated. It was shown that oxidation caused enrichment of the surface of vanadium antimonate crystals in antimony and reduction, in opposite, resulted in enrichment of these surfaces in vanadium. It was revealed that oxidation and reduction caused vanadium antimonate segregation in large V(2)O(5)-Sb(2)O(4) solid solution crystallites.

Słowa kluczowe

PL

katalizator; utlenianie; redukcja; rozdzielanie

EN

catalyst; oxidation; reduction; cation segregation

• Czasopismo: Bulletin of the Polish Academy of Sciences. Chemistry
• Rocznik: 2002
• Tom: Vol. 50, No. 2
• Strony: 259-266
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Bielańska, E.

autor

Najbar, M.

autor

Nizioł, S.

autor

Dziembaj, R.

autor

Witkowski, S.

• Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Kraków, Poland (Instytut Metalurgii i Inżynierii Materiałowej PAN)