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A low-temperature method for measuring oxygen storage capacity of ceria-containing oxides

机译：低温方法测量氧气存储容量的ceria-containing氧化物

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摘要

A new method of investigation of oxygen storage capacity (OSC) of ceria-containing oxides in a wide range of temperatures is considered. Usually, the approach is based on using CO oxidation with oxygen released from the lattice of ceria-containing oxides. However, the low activity of ceria in this reaction at low temperature limits the whole process of OSC measurement. Therefore, the new method suggests the addition of a more active catalyst Pt/Al2O3 to a ceria-containing oxide to facilitate the CO oxidation step. A correlation between the OSC and effectiveness of the three-way catalysts (TWC) is also presented. The method allows studying the OSC at lower temperatures. The results are utterly essential for understanding of the behavior of TWC and thus for their development. The method can be useful for development of catalysts based on ceria-containing oxides aimed for many other applications.
机译：一种新的调查方法的氧气储存(OSC) ceria-containing氧化物的能力广泛的温度被认为是。通常,这种方法是基于使用有限公司氧化和氧释放晶格ceria-containing氧化物。二氧化铈在这个反应活性低温度限制OSC的整个过程测量。的更积极的Pt /氧化铝催化剂一个氧化ceria-containing促进有限公司氧化步骤。三方催化剂(TWC)的有效性也提出了。OSC在较低的温度。完全的理解的必要条件TWC的行为,从而为他们的发展。发展的方法可能是有用的基于ceria-containing氧化物为催化剂对于许多其他应用程序。

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