Effect of the P/Al ratio on the performance of modified HZSM-5 for methanol dehydration reaction |
| |
| Affiliation: | 1. Department of Physics, Faculty of Basic Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran;2. Department of Physics, College of Sciences, Yasouj University, P.O. Box 75914-353, Yasouj, Iran;1. Department of Chemistry, College of Science, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea;2. Korean Institute of Ceramic Engineering and Technology (KICET), Geumcheon-gu, Seoul 153-801, Republic of Korea;1. Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran;2. Chemistry Department, Semnan University, Semnan, Iran;3. Chemistry Department, University of Erciyes, 38039 Kayseri, Turkey;4. Department of Chemistry, Semnan University, Semnan 35195-363, Iran |
| |
| Abstract: | The precipitation method was used to modify HZSM-5 by coating it with aluminophosphate at P/Al molar ratios of 0.3, 0.8, 1.2 and 1.5. These catalysts were characterized by XRD, NH3-TPD, BET, FT-IR, ICP-TEOS and SEM and evaluated as catalysts for the methanol dehydration reaction. The ZALPO0.8 catalyst achieved 86% conversion which was the highest conversion till 315 °C. It was found that primary benefits of AlPO modification were that it tended to retard the activity of the highly active acid sites which promote dimethyl ether decomposition and led to decrease in the apparent activation energy. |
| |
| Keywords: | Aluminophosphate DME Methanol dehydration HZSM-5 |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
