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学科主题物理化学
The adsorption performance of IrFe/Al2O3 catalyst characterized by Microcalorimetry
Zhang WS(张万生); Li L(李林); Wang AQ(王爱琴); Wang XD(王晓东); Zhang T(张涛)
会议名称5th International and 7th China-Japan Joint Symposium on Calorimetry and Thermal Analysis & Exhibition
会议日期2008-5-18
2008-05-18
会议地点China
页码304/1
部门归属十五室
主办者DICP
英文摘要In this work, we investigated the adsorption performance of IrFe/Al2O3 and Ir/Al2O3 catalysts, which were applied to purify CO in reforming gas [1]. The catalysts were prepared by incipient wetness impregnation method. The results of XRD and TEM both showed that iridium and iron oxide were highly dispersed over the Al2O3. Microcalorimetric measurements of CO and O2 adsorption on IrFe/Al2O3, Ir/Al2O3 and Fe/Al2O3 catalysts were performed using a BT 2.15 heat-flux calorimeter. Microcalorimetry analysis demonstrated that when Ir was supported on the pre-formed Fe/Al2O3, the strength and saturation of CO adsorption on the IrFe/Al2O3 catalyst changed little, respectively. The addition of Fe caused the great enhancement of the strength and saturation uptake of O2 adsorption on the IrFe/Al2O3 catalyst, although the initial adsorption heat of O2 on the IrFe/Al2O3 catalyst was lower than that on the Ir/Al2O3 catalyst. Thus, it was supported that the structure of Fe-promoted Ir/Al2O3 catalyst allowed metallic Ir sites on the surface of catalyst and accessible for CO adsorption, while did not interfere with the O2 adsorption on the FeOx species.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/112968
专题中国科学院大连化学物理研究所
通讯作者Zhang T(张涛)
推荐引用方式
GB/T 7714
Zhang WS,Li L,Wang AQ,et al. The adsorption performance of IrFe/Al2O3 catalyst characterized by Microcalorimetry[C],2008:304/1.
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