Investigation of Effective Parameters Ce and Zr in the Synthesis of H-ZSM-5 and SAPO-34 on the Production of Light Olefins from Naphtha

Table 6

Acid properties of catalysts NH3-TPD analysis.

Catalysts	Acidity (mmol NH3/g-catalyst)
	Weak acid	Middle and strong acid	Total acid
SAPO-34	0.625	0.702	1.327
2%Ce-SAPO-34	0.677	0.942	1.619
2%Zr-SAPO-34	0.358	0.843	1.201
2%Ce-2%Zr-SAPO-34	0.725	0.973	1.698