Zeolite A can be described using a 11.9 primitive cubic cell with the origin at a -cage centerin Figure 14.3. From the figure, make

Zeolite A can be described using a 11.9 Å primitive cubic cell with the origin at a β-cage centerin Figure 14.3. From the figure, make a visual estimate of the size of a sphere that would fit inside the β and α cages. By using the information in the table accompanying Problem 14.4, estimate the surface area of these spheres in a 1 g sample of zeolite A. Compare your answer to the accessible area of 1205 m² /g quoted in the text.

Figure 14.3

Problem 14.4

Calculate the number of tetrahedral atoms per nm3 for each zeolite framework type listed in the table below. 

Na2 Si Na1