High performance and stability of copper loading on mesoporous ceria catalyst for preferential oxidation of CO in presence of excess of hydrogen

被引：28
作者：
Jampa, Sureerat [1 ,2 ]
Wangkawee, Kanapos [1 ,2 ]
Tantisriyanurak, Supakorn [1 ,2 ]
Changpradit, Jutamas [1 ,2 ]
Jamieson, Alexander M. [3 ]
Chaisuwan, Thanyalak [1 ,2 ]
Luengnaruemitchai, Apanee [1 ,2 ]
Wongkasemjit, Sujitra [1 ,2 ]
机构：
[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Ctr Excellence Petrochem & Mat Technol, Bangkok 10330, Thailand
[3] Case Western Reserve Univ, Dept Macromol Sci & Engn, Cleveland, OH 44106 USA
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 08期
关键词：
Mesoporous ceria; High surface area; Copper catalyst; Deposition-precipitation; CO-PROX reaction; LOW-TEMPERATURE; LATTICE-PARAMETERS; CUO/CEO2; CATALYSTS; OXIDE CATALYSTS; CARBON-MONOXIDE; RICH H-2; GOLD; RAMAN; DEACTIVATION; REDUCTION;
D O I：
10.1016/j.ijhydene.2016.08.078
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：
Copper (Cu) supported on mesoporous (MSP) ceria catalysts were prepared by deposition precipitation (DP) method for the preferential CO oxidation of CO in a H-2-rich stream (CO-PROX). A MSP ceria support with a high surface area of 293 m(2)/g and ordered structure was synthesized by a nanocasting process using MCM-48 as template. All copper-MSP ceria catalysts show high dispersion of Cu and still maintain the fluorite structure of MSP ceria. Moreover, TEM imaging confirmed the three dimensional and long-range ordered pore structure of the Cu-catalysts. The reduction temperature of the Cu-catalysts decreases compared to pure MSP ceria and the reduction of Ge4+ to Ce3+ decreases with increasing copper content. An MSP ceria catalyst with 7 wt% Cu loading (7Cu/MSP ceria) shows the highest activity with high stability for over 48 h in various feed components, making it attractive for use as a catalyst in purification of hydrogen. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5537 / 5548
页数：12
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