2. The true density of the solid material in an activated alumina particle is 3.675 g/cm3. The density of the particle determined by mercury displacement is 1.547 g/cm3. The surface area (Sg) by adsorption measurement is 175 m2/g. The bulk density of bed (which is defined as mass of catalyst particle per volume of reactor bed) is 0.81 g/cm3. From this information, Determine,
a) the pore (void) volume per gram b) the porosity of the particles, c) the mean pore radius ( r ), d) what fraction of the total volume of the bed is void space between the particles e) what fraction of the total volume of the bed is void within the particles