Direct Catalyst Monitoring by Electrical Means: An Overview on Promising Novel Principles
Direct Catalyst Monitoring by Electrical Means: An Overview on Promising Novel Principles
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DOI：
10.1007/s11244-009-9399-6
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发表时间：
2009-12-01
影响因子：
3.6
通讯作者：
Fischerauer, Gerhard
中科院分区：
文献类型：
--
作者：
Moos, Ralf;Wedemann, Marion;Fischerauer, Gerhard
通过测量催化剂涂层本身的电性能，可以直接原位观察TWC、LNT和SCR催化剂的状态。有两种可能的原理：一种是接触法，将涂层施加到平面电极上并测量电阻抗；另一种是非接触法，其中射频波穿透涂层材料。在任一情况下，催化剂状态与电传感器的测量的透射或反射特性直接相关。
By measuring the electrical properties of the catalyst coating itself, one can observe directly and in situ the state of TWC, LNT, and SCR catalysts. Two principles are possible: a contact method, for which the coating is applied to planar electrodes and the electrical impedance is measured, and a non-contact method, in which the coating material is penetrated by radio frequency waves. In either case, the catalyst state is directly correlated with the measured transmission or reflection characteristics of the electrical sensors.