Distribution of the strength of acid sites in mildly steamed HZSM-5 studied by IR spectroscopy

Datka J; Gil B; Baran P; Staudte B

Reaction Kinetics and Catalysis Letters, Vol.77, No.2, 209-217, 2002

DOI10.1023/A:1020863313715 Export Citation

Distribution of the strength of acid sites in mildly steamed HZSM-5 studied by IR spectroscopy

Steaming resulted in modification of the distribution of acid strength of OH groups. The contribution of less acidic sites increased and new, very strongly acidic hydroxyls characterized by IR band at 3590 cm(-1) appeared.

Keywords:acidity;steamed HZSM-5;IR spectroscopy