New insights into the development of Brønsted acidity of niobic acid - Sorbonne Université
Article Dans Une Revue Catalysis Today Année : 2012

New insights into the development of Brønsted acidity of niobic acid

Résumé

The development of Brønsted acidity and the relationship between acidity, catalytic performance and structure of niobium oxide were investigated for a series of samples prepared by calcination of niobic acid at temperatures between 423 and 823 K. All solids were active for propan-2-ol dehydration. The Brønsted acidity was monitored by adsorption of lutidine and CO followed by FT-IR. Low temperature CO adsorption measurements showed that all solids exhibit essentially the same medium Brønsted acid strength. A direct relationship between the abundance of Brønsted acid sites monitored by lutidine adsorption followed by desorption at 523 K and propan-2-ol dehydration activity was observed.

Dates et versions

hal-00745977 , version 1 (26-10-2012)

Identifiants

Citer

Vanessa Lebarbier, Marwan Houalla, Thomas Onfroy. New insights into the development of Brønsted acidity of niobic acid. Catalysis Today, 2012, 192, pp.123-129. ⟨10.1016/j.cattod.2012.02.061⟩. ⟨hal-00745977⟩
129 Consultations
0 Téléchargements

Altmetric

Partager

More