( Activation of a sepiolite by dilute solutions of HNO3 and later heat treatment: I. Study of the specific surface area, Toledo, Spain).

1. Lopez-Gonzalez, J.D.D.
2. Ramierz-Saenz, A.
3. Rodriguez-Reinoso, F.
4. Valenzuela-Calahorro, C.
5. Zurita-Herrera, L.