N-butane cracking values

The n-butane cracking values obtained with the titanium substituted zeolites all show an increase in kA value over that obtained with the starting zeolite. This is notable in that the Ti is tetra-valent, and does not require a cation. With reduced cation content, the acidity should be reduced. However, the result obtained was the reverse. With iron-substituted products, the resulting kA values varied with the zeolite. Although not discussed in detail in this paper, all Fe-containing products did show indications of metals activity there was a dramatic increase in the amount of olefins produced. 

Table IX. Maximum n-Butane Cracking Values (kA) for Selected MeAPO Molecular Sieves...

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See also in sourсe #XX -- [ , ]

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