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 7

Acid properties of catalysts NH3-TPD analysis.

Catalysts	Acidity (mmol NH3/g-catalyst)
	Weak acid	Middle and strong acid	Total acid
HZSM-5	0.40	0.82	1.18
2%Ce- HZSM-5	0.72	0.85	1.57
8% Ce - HZSM-5	1.05	1.49	2.54
2%Zr- HZSM-5	0.53	1.03	1.55
8%Zr- HZSM-5	0.71	1.33	2.04
2%Ce-8%Zr- HZSM-5	0.27	0.14	0.41
8%Ce-2%Zr- HZSM-5	0.18	0.00	0.18