Research Article
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 |
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