(Department of Material Science and Engineering, Tsinghua University, Beijing 100084，China)
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DOI:
10.7502/j.issn.1674-3962.2013.02.06
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Abstract:
CeO2ZrO2 mixed oxides, which serve as an essential material in three way catalysts (TWC), can effectively expand the catalysts operation windows by adjusting the ratio of air to fuel, and are widely applied in purification of automotive exhaust pollution, due to its unique oxygen storage and release properties (OSC). With higher environmental requirement and increasingly strict emission regulations promulgated, higher standards are required for the mixed oxides including the thermal stability, low temperature reduction, and OSC performance. The common synthesis method of CeO2ZrO2 mixed oxides, including co precipitation, sol gel method, high energy ball milling and template methods are introduced. We also summarized the basic elementary modification mechanism, together with effect of alkalineearth elements and transition metal modification. Domestic market demand, major manufactures in and abroad, along with their current production technology and industrialization progresses are briefed. Prospects on both research and industrialization are proposed in the end.