Catalytic dehydration of methanol to dimethyl ether (DME) over Al-HMS catalysts |
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| Affiliation: | 1. Department of Chemistry, Faculty of Science, Shahid Beheshti University, G.C., P.O. Box 19396-4716, Tehran, Iran;2. Research Institute of Petroleum Industry (RIPI), Tehran 1485733111, Iran;1. Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China;2. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;1. University of Calabria, Department of Environmental and Chemical Engineering, Via P. Bucci, Cubo 42a, I-87036 Rende, CS, Italy;2. CNR-ITAE, Istituto di Tecnologie Avanzate per l’Energia “Nicola Giordano”, Via S. Lucia Sopra Contesse 5, I-98126 Messina, Italy;3. Instituto de Catálisis y Petroleoquímica, ICP-CSIC, C/Marie Curie 2, Madrid, Spain;4. University of Messina, Dip. Ingegneria Elettronica, Chimica ed Ingegneria Industriale INSTM/CASPE, Laboratory of Catalysis for Sustainable Production and Energy, Contrada di Dio, I-98166 Messina, Italy |
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| Abstract: | A series of Al-HMS with different Si/Al ratio was used as a solid acid catalyst for methanol dehydration to dimethyl ether (DME). The effect of temperature, feed composition, space velocity, and the catalyst Si/Al ratio on the catalytic dehydration of methanol was investigated. By decreasing Si/Al, the temperature required to reach equilibrium conversion of methanol decreased due to the increased number of acidic sites. Compared to commercial γ-Al2O3, Al-HMS-5 and Al-HMS-10, catalysts exhibited a high yield of DME. Among all Al-HMS catalysts, Al-HMS-10 exhibited an optimum yield of 89% with 100% selectivity and excellent stability for methanol dehydration to DME. |
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| Keywords: | Al-HMS Acid catalyst Methanol dehydration Dimethyl ether |
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