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Effect of ultrasonic irradiation and/or halogenation on the catalytic performance of γ-Al2O3 for methanol dehydration to dimethyl ether

Sameh M. K. Aboul-Fotouh

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文章导航 > 燃料化学学报（中英文）  > 2013 >  41(09): 1077-1084
Sameh M. K. Aboul-Fotouh. Effect of ultrasonic irradiation and/or halogenation on the catalytic performance of γ-Al2O3 for methanol dehydration to dimethyl ether[J]. 燃料化学学报（中英文）, 2013, 41(09): 1077-1084.
引用本文: Sameh M. K. Aboul-Fotouh. Effect of ultrasonic irradiation and/or halogenation on the catalytic performance of γ-Al2O3 for methanol dehydration to dimethyl ether[J]. 燃料化学学报（中英文）, 2013, 41(09): 1077-1084.
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Sameh M. K. Aboul-Fotouh. Effect of ultrasonic irradiation and/or halogenation on the catalytic performance of γ-Al2O3 for methanol dehydration to dimethyl ether[J]. Journal of Fuel Chemistry and Technology, 2013, 41(09): 1077-1084.
Citation: Sameh M. K. Aboul-Fotouh. Effect of ultrasonic irradiation and/or halogenation on the catalytic performance of γ-Al2O3 for methanol dehydration to dimethyl ether[J]. Journal of Fuel Chemistry and Technology, 2013, 41(09): 1077-1084.
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Effect of ultrasonic irradiation and/or halogenation on the catalytic performance of γ-Al2O3 for methanol dehydration to dimethyl ether

  • Ain Shams University, Faculty of Education, Chemistry Department, Roxy, Cairo 11566, Egypt

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    通讯作者:

    Sameh M. K. Aboul-Fotouh

  • 中图分类号: O643

Effect of ultrasonic irradiation and/or halogenation on the catalytic performance of γ-Al2O3 for methanol dehydration to dimethyl ether

  • Ain Shams University, Faculty of Education, Chemistry Department, Roxy, Cairo 11566, Egypt

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    Corresponding author: Sameh M. K. Aboul-Fotouh

    摘要
  • 摘要: Dimethyl ether (DME) is amongst one of the most promising alternative, renewable and clean fuels being considered as a future energy carrier. In this study, the comparative catalytic performance of the halogenated γ-Al2O3 prepared from two halogen precursors (ammonium chloride and ammonium fluoride) is presented. The impact of ultrasonic irradiation was evaluated in order to optimize both the halogen precursor for the production of DME from methanol in a fixed bed reactor. The catalysts were characterized by SEM, XRD, BET and NH3-TPD. Under reaction conditions where the temperature ranged from 200 to 400 ℃ with a WHSV =15.9 h-1 was found that the halogenated catalysts showed higher activity at all reaction temperatures. However, the halogenated alumina catalysts prepared under the effect of ultrasonic irradiation showed higher performance of γ-Al2O3 for DME formation. The chlorinated γ-Al2O3 catalysts showed a higher activity and selectivity for DME production than fluorinated versions.
    Abstract: Dimethyl ether (DME) is amongst one of the most promising alternative, renewable and clean fuels being considered as a future energy carrier. In this study, the comparative catalytic performance of the halogenated γ-Al2O3 prepared from two halogen precursors (ammonium chloride and ammonium fluoride) is presented. The impact of ultrasonic irradiation was evaluated in order to optimize both the halogen precursor for the production of DME from methanol in a fixed bed reactor. The catalysts were characterized by SEM, XRD, BET and NH3-TPD. Under reaction conditions where the temperature ranged from 200 to 400 ℃ with a WHSV =15.9 h-1 was found that the halogenated catalysts showed higher activity at all reaction temperatures. However, the halogenated alumina catalysts prepared under the effect of ultrasonic irradiation showed higher performance of γ-Al2O3 for DME formation. The chlorinated γ-Al2O3 catalysts showed a higher activity and selectivity for DME production than fluorinated versions.
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  • 收稿日期:  2013-02-11
  • 修回日期:  2013-05-27
  • 刊出日期:  2013-09-30

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