Pure Appl. Chem., 1993, Vol. 65, No. 10, pp. 2205-2208
doi:10.1351/pac199365102205
Acidity of the external surface of modified pentasil catalysts and its resistance to mechanical treatment
O. O. Parenago, O. E. Lebedeva, I. I. Ivanova and E. V. Lunina