Dimethyl Ether Steam Reforming for Hydrogen Production on CuO/ZnO/Y2O3/gamma-Al2O3 Bi-Functional Catalyst

作者：Wang Xiao Lei; Pan Xiang Min; Lin Rui; Ren Ke Wei; Kou Su Yuan; Ma Jian Xin^*

来源：Acta Physico - Chimica Sinica, 2009, 25(6): 1097-1102.

• Yttrium oxide
• Alumina
• Copper
• Zinc
• Dimethyl ether steam reforming
• Hydrogen production

CuO/ZnO/Y2O3 was prepared by deposition-precipitation method and was mechanically mixed with gamma-Al2O3 to prepare CuO/ZnO/Y2O3/gamma-Al2O3 bi-functional catalysts for dimethyl ether steam reforming (DME SR). The results indicated that CuO/ZnO/Y2O3/gamma-Al2O3 bi-functional catalyst showed superior performance to the conventional CuO/ ZnO/Al2O3/gamma-Al2O3 bi-functional catalysts. Differences in surface acidity and microstructure between the two bifunctional catalysts are discussed with reference to Brunauer-Emmett-Teller (BET), N2O chemisorption, NH3 temperature-programmed desorption (NH3-TPD), X-ray diffraction (XRD) and H-2 temperature-programmed reduction (H-2-TPR) analyses. The results showed that CuO/ZnO/Y2O3/gamma-Al2O3 had better copper dispersion on its surface and smaller copper crystallites than CuO/ZnO/Al2O3/gamma-Al2O3 did. Additionally, Y2O3 has better thermal stability than Al2O3, which may prevent copper crystallites from conglomeration. The performance of the reforming component and the catalytic activity as well as stability of the bi-functional catalyst was thus improved.

• 出版日期2009-6
• 单位同济大学; 华东理工大学