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Aluminum Catalyst
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Problem 3. Aluminum Catalyst
Aluminum oxide commonly occurs in several different crystal structures and distinctive
properties.
a) a – Al2O3 is the most common form of alumina with a bulk density around
4.0 g/cm². Assume it forms solid spherical particles with diameter 1um and the
sphere-sphere contact leads to negligible loss of exposed surface area. Find the
specific surface area a.
b) y - Al2O3 has a cubic crystal structure with a bulk density 3.5g/cm?. If it forms
platelets around 3nm thick and the edges have negligible area. Once again, assume
that no surface area is lost due to platelet contact, find a.
c) Compare the two aluminas. Which one would you use as a catalyst?
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