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Production of dimethylether (DME) as a clean fuel using sonochemically prepared CuO and/or ZnO-modified γ-alumina catalysts

Sameh M. K. Aboul-Fotouh

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引用本文: Sameh M. K. Aboul-Fotouh. Production of dimethylether (DME) as a clean fuel using sonochemically prepared CuO and/or ZnO-modified γ-alumina catalysts[J]. 燃料化学学报, 2014, 42(3): 350-356. shu
Citation:  Sameh M. K. Aboul-Fotouh. Production of dimethylether (DME) as a clean fuel using sonochemically prepared CuO and/or ZnO-modified γ-alumina catalysts[J]. Journal of Fuel Chemistry and Technology, 2014, 42(3): 350-356. shu

Production of dimethylether (DME) as a clean fuel using sonochemically prepared CuO and/or ZnO-modified γ-alumina catalysts

    通讯作者: Sameh M. K. Aboul-Fotouh,E-mail:samehaboulfotouh@yahoo.com
摘要: The catalytic conversion of methanol to dimethylether (DME) was studied over CuO/Al2O3, ZnO/Al2O3 and ZnO-CuO/Al2O3 nanocatalysts prepared in presence or absence of ultrasonic irradiation. The catalysts were characterized by X-ray diffraction (XRD), surface characterization method (BET), scanning electron microscope (SEM), H2-temperature programmed reduction (H2-TPR) and temperature programmed desorption of ammonia (NH3-TPD). The experimental results show that during catalytic dehydration of methanol to dimethylether, the activities of the CuO/Al2O3, ZnO/Al2O3 and ZnO-CuO/Al2O3 catalysts prepared using ultrasonic treatment are much higher than those prepared in absence of ultrasonication. SEM shows that the use of ultrasonication results in much smaller nanoparticles. BET and XRD show that the ultrasonication increases the surface area and pore volume of the catalysts. H2-TPR profiles indicated that reducibility of the sonicated nanocatalysts is carried out at lower temperatures. NH3-TPD shows that ultrasound irradiation has enhanced the acidity of the nanocatalyst and hence enhanced catalytic performance for DME formation.

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  • 收稿日期:  2013-12-18
  • 网络出版日期:  2014-01-30
通讯作者: 陈斌, bchen63@163.com
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