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Citation: WANG Xiao-Lei, PAN Xiang-Min, LIN Rui, KOU Su-Yuan, ZOU Wei-Bing, MA Jian-Xin. Dimethyl Ether Steam Reforming for Hydrogen Production over Cu-Ni/γ-A_l2O₃ Bi-Functional Catalyst[J]. Acta Physico-Chimica Sinica, ;2010, 26(05): 1296-1304. doi: 10.3866/PKU.WHXB20100322 shu

Dimethyl Ether Steam Reforming for Hydrogen Production over Cu-Ni/γ-A_l2O₃ Bi-Functional Catalyst

1.
School of Environmental Science and Engineering, Tongji University, Shanghai 200092, P. R. China; Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, P. R. China; School of Automotive Studies, Tongji University, Shanghai 201804, P. R. China; Shool of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China

Received Date: 16 September 2009
Available Online: 27 January 2010

Cu/γ-Al2O3, Ni/γ-Al2O3, and Cu-Ni/γ-Al2O3 catalysts were prepared using the deposition-precipitation method and the catalytic performances for hydrogen production during dimethyl ether steam reforming(DME SR) were investigated. The structure and surface characteristics of these catalysts were analyzed by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), H2 temperature-programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), NH3 temperature-programmed desorption (NH3-TPD), temperature-programmed oxidation (TPO), and transmission electron microscopy (TEM). It was revealed that both copper and nickel were active components during DME SR and there were interactions among Cu, Ni, and γ-Al2O3. Nickel addition improved copper dispersion to obtain small copper crystallites, and strengthened the interaction between copper and γ-Al2O3 so as to prevent copper agglomeration. Copper addition also improved nickel dispersion and the smaller nickel particle size suppressed CH4 formation, which prevented coke formation. Therefore, Cu-Ni/γ-Al2O3 with superior catalytic activity and stability was obtained. During 100 h durability testing, the Cu-Ni/γ-Al2O3 maintained about 95% DME conversion and did not show obvious deactivation.
- Copper,
- Nickel,
- Alumina,
- Dimethyl ether steamreforming,
- Hydrogen production,
- Stability
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Dimethyl Ether Steam Reforming for Hydrogen Production over Cu-Ni/γ-Al2O3 Bi-Functional Catalyst

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通讯作者: 陈斌, bchen63@163.com

Dimethyl Ether Steam Reforming for Hydrogen Production over Cu-Ni/γ-A_l2O₃ Bi-Functional Catalyst