Homework 05
From the diagram, the effect
of temperature and Si/Al on the crystallisation of some aluminosilicates can be
illustrated. Use the diagram to answer following questions
1. Which zeolite possess the
lowest Si/Al ratio
2. Which zeolite possess the
highest density
3. At which temperature,
Analcite can be crystallised in pure form with the highest Si/Al ratio
4. Mordenite should possess
channel or cage structure, Why?
5. What is the dfference
between the Mordenite that crystallised at 330 oC and that
crystallised at 250 oC
6. If the Na/Al ratio for all
crystallisation is higher than 1, which zeolite should be crystallised at 270 oC
when the Si/Al of the gel composition is 4.5, why?