Characterization of Pd catalyst-electrodes deposited on YSZ: Influence of the preparation technique and the presence of a ceria interlayer
Characterization of Pd catalyst-electrodes deposited on YSZ: Influence of the preparation technique and the presence of a ceria interlayer
复制标题
DOI：
10.1016/j.apsusc.2012.08.080
复制
发表时间：
2012-11
影响因子：
6.7
通讯作者：
C. Jiménez-Borja;F. Matei;F. Dorado;J. Valverde
中科院分区：
文献类型：
--
作者：
C. Jiménez-Borja;F. Matei;F. Dorado;J. Valverde
采用 X 射线光电子能谱 (XPS)、X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 对通过浆料沉积或湿浸渍技术制备的 Y2O3 稳定 ZrO2 (YSZ) 负载钯催化剂电极进行了表征。研究发现催化膜制备技术以及钯膜和固体电解质之间存在的二氧化铈夹层对甲烷氧化的催化活性有很强的依赖性。发现浸渍的钯膜比通过浆料沉积制备的膜更具活性。此外，二氧化铈的添加可以稳定甲烷氧化的钯活性相。
Palladium catalyst-electrodes supported on Y2O3-stabilized-ZrO2(YSZ) prepared either by paste deposition or wet impregnation technique were characterized using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found a strong dependence of the catalytic film preparation technique as well as of the presence of a ceria interlayer between the palladium film and the solid electrolyte on the catalytic activity towards methane oxidation. Impregnated palladium films were found to be more active than films prepared by paste deposition. Besides, the addition of ceria allowed stabilizing the palladium active phase for methane oxidation.