Calorimetric and FTIR study of the acid properties of sulfated titanias

A. Desmartin-Chomel , J. L. Flores , A. Bourane , J. M. Clacens , F. Figueras (1) , G. Delahay , A. Giroir Fendler , C. Lehaut-Burnouf

1 IRC - Institut de recherches sur la catalyse

Titanium oxides of different surface areas were sulfated then calcined to convert the solid to a strong acid. The amount of sulfur retained by the solid and the thermal stability of the resulting sulfate are controlled by the dispersion of the initial oxide. The acid properties were determined by gravimetry at 383 K, calorimetry using ammonia adsorption at 353 K, and by quantitative analysis of the infrared spectra of

Domaines: Catalyse

A. Desmartin-Chomel, J. L. Flores, A. Bourane, J. M. Clacens, F. Figueras, et al.. Calorimetric and FTIR study of the acid properties of sulfated titanias. Journal of Physical Chemistry B, 2006, 110, pp.858-863. ⟨hal-00023521⟩