The role of Au, Cu & CeO2 and their interactions for an enhanced WGS performance
The role of Au, Cu & CeO2 and their interactions for an enhanced WGS performance
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DOI：
10.1016/j.apcatb.2016.01.031
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发表时间：
2016-06
影响因子：
22.1
通讯作者：
T. Reina;S. Ivanova;M. Centeno;J. Odriozola
中科院分区：
文献类型：
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作者：
T. Reina;S. Ivanova;M. Centeno;J. Odriozola
本文研究了多组分Au/Ce_（1-x）Cu_xO_2/Al_2 O_3催化剂上的WGS反应。该系统经过精心设计，旨在利用配方中包含的每一个活性相：金、二氧化铈和铜。特别强调的是CeO 2-CuO的协同作用及其对所显示的催化性能的影响，有和没有金。为此，提出了混合材料的理化性质与其活性/稳定性之间的有意义的相关性。一般而言，所开发的催化剂在实际WGS反应条件下表现出高活性，具有相当好的长期稳定性。此外，该系统成功地承受了启动/关闭的情况下，在燃料电池目标的纯氢生产领域的真实的应用不可或缺的必要条件。
The WGS reaction over multicomponent Au/Ce1-xCuxO2/Al2O3catalysts is studied in this work. The systems are carefully designed aiming to take advantage of every active phase included in the formulation: gold, ceria and copper. Special emphasis is given to the CeO2-CuO synergy and its influence on the displayed catalytic performance with and without gold. To this aim a meaningful correlation between the physicochemical properties of the mixed materials and their activity/stability is proposed. In general terms the developed catalysts present high activity under realistic WGS reaction conditions, with fairly good long term stability. In addition, the systems successfully withstand start-up/shut-downs situations, indispensable requisite for real applications in the field of pure hydrogen production for fuel cell goals.