Zeolite Homework 03

1. If the zeolites in the last week homework were ion exchanged into acid form, which one possess the most acid strength, why?

2. From the ion Exchange Isotherm of Na-chabazite with other cations shown in the webpage (D.W. Breck, Zeolite Molecular Sieve, 1974, p 557),

2.1 Give the order of exchangeable preference of cations that can be exchanged into Na-chabasite

2.2 What cation(s) cannot be exchanged to 100%? Why? What should be done in order to increase the exchangeable capacity of such cation (s)?

2.3. If the Si/Al ration of Na-chabazite was increased, Which ion exchange isotherm will be most affected?, How and why?

2.4 Can we exchange chabasite into 100% Acid form? Whether or not, how is the acid strength of it as compared to the acid strength of Zeolite H-Beta