稀土元素以其特殊的物理和化学性质在汽车尾气三效净化催化剂（TWC）中获得了广泛应用。

Doped rare earth oxides have been widely used in three-way catalyst(TWC) for purification of automobile exhausts because of its special properties.

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介绍汽车尾气三效催化净化技术及净化器的主要工作原理，并对三效催化剂主要成分： 载体、 涂层、 活性催化剂及助剂进行论述。

This paper introduces the three-way emission control technology and the principle of auto exhaust catalytic converter. The main composition of the three-way-catalyst is also reviewed.

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含铈氧化物由于其独特的氧化还原性能及较强的储氧能力成为汽车尾气催化净化三效催化剂的关键材料。

Materials containing ceria are used in three-way catalytic converters because of their unique redox properties and high oxygen storage capacity.

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