Abstract
Diffuse reflectance spectra of hydrated, calcined, and reduced chromia/silica-alumina (Cr/SiO2 ¢ Al2O3) catalysts with different
SiO2 contents have been investigated by using an interactive selfmodeling
mixture analysis. Four pure components are revealed in the spectra of Cr-catalysts before and after calcination: these
are component A with three characteristic bands at 225, 325, and
... read more