Title of article
Dehydration of Methanol to Dimethyl Ether Employing Modified H-ZSM-S Catalysts
Author/Authors
Khandan, N sharif university of technology - Department of Chemical and Petroleum Engineering, تهران, ايران , Kazemeini, M sharif university of technology - Department of Chemical and Petroleum Engineering, تهران, ايران , Aghaziarati, m malekeashtar university of technology - Department of chemistry and chemical engineering, تهران, ايران
From page
3
To page
11
Abstract
Synthesis of Dimethyl ether from methanol was investigated over H-ZSM -5 and promoted H-ZSM- 5 catalysts empioving Mg, Na, Zr, AI and Zn components. All samples were characterized by AAS, BET. XRD and TPD analyses. Results of TPD analysis indicated that the number of weak strength acid sites increased Oil the surface or Na. Zn and Mg modi fied H-ZSM-5, while the number of medium strength acid sites increased Oil the surface of Zr and Al modified H-ZSM- 5. Zr- modified H-ZSM- 5 zeolite exhibited higher activity (94%) and selectivity (99%) than other materials while all modified catalysts exhibited good stability. Ultimately. it was concluded that production of dimethyl ether from methanol occurred Oil acidic sites with medium and/or weak strengths. in this direction. an optimum catalyst for dehydration or methanol to DME with high conversion, selectivitv and stability was developed.
Keywords
Dehydration. methanol. dimethyl ether , H , ZSM , 5
Journal title
Iranian Journal of Chemical Engineering
Journal title
Iranian Journal of Chemical Engineering
Record number
2550439
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