Steam reforming of dimethyl ether over Cu-Ni/γ-Al2O3 bi-functional catalyst prepared by deposition-precipitation method

被引：65
作者：
Wang, Xiaolei [1 ,2 ]
Pan, Xiangmin [1 ,3 ]
Lin, Rui [1 ,3 ]
Kou, Suyuan [1 ,3 ]
Zou, Weibing [1 ,4 ]
Ma, Jian-Xin [1 ,3 ]
机构：
[1] Tongji Univ, Clean Energy Automot Engn Ctr, Inst Hydrogen Technol, Shanghai 201804, Peoples R China
[2] Tongji Univ, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China
[3] Tongji Univ, Sch Automot Studies, Shanghai 201804, Peoples R China
[4] E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 09期
关键词：
Steam reforming; Dimethyl ether; Hydrogen production; gamma-Al2O3; Copper; Nickel-promoted; SOLID-ACID CATALYSTS; FUEL-CELL FEEDS; HYDROGEN-PRODUCTION; CU/ZNO/AL2O3; CATALYST; COMPOSITE CATALYSTS; PARTIAL OXIDATION; METHANOL; CU; KINETICS; DECOMPOSITION;
D O I：
10.1016/j.ijhydene.2010.01.142
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Cu-Ni/gamma-Al2O3 catalysts with different metal contents for dimethyl ether steam reforming (DME SR) were prepared by the method of deposition-precipitation. Characterization of specific surface area measurement (BET), X-ray diffraction (XRD) and hydrogen temperature-programmed reduction (H-2-TPR) revealed that nickel improved the dispersion of copper, increased the interaction between copper and gamma-Al2O3, and therefore, inhibited the sintering of copper. Ammonia temperature-programmed desorption (NH3-TPD) showed that metal particles could occupy the acid sites, leading to the decrease in acid amount and acid strength of Cu-Ni/gamma-Al2O3 catalyst. Kinetic measurements indicated that gamma-Al2O3 is vital for DME SR and a higher content of gamma-Al2O3 in catalyst was needed. The addition of nickel suppressed the water gas shift (WGS) reaction. Initial durability testing showed that the conversion of DME over Cu-Ni/gamma-Al2O3 catalyst was always almost complete during the 30 h experimental reaction time. Therefore, Cu-Ni/gamma-Al2O3 could be a potential DME SR catalyst for the production of hydrogen. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：4060 / 4068
页数：9
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