The results of NO_x isothermal storage experiments indicate that NO_2 storage is much more preferable than NO storage and Pt can catalyze the oxidation of NO, resulting in much higher NO* storage capacity.

• NO_x等温存储实验结果证实,NO须经氧化为NO_2才能被有效存储,Pt可以催化NO的氧化反应,MgO起主要的存储作用。