文章信息/Info

Title:

Research and Industrialization Progress of  Ceria Zirconia Mixed Oxides

作者:

翁端; 萬杰

(清華大學材料科學與工程系，北京 100084)

Author(s):

WENG Duan; WAN Jie

(Department of Material Science and Engineering, Tsinghua University, Beijing 100084，China)

關鍵詞:

CeO2 ZrO2復合氧化物;  制備;  改性;  產業化

DOI:

10.7502/j.issn.1674-3962.2013.02.06

文獻標志碼:

A

摘要:

CeO2ZrO2復合氧化物具有良好的儲放氧性能（Oxygen Storage Capacity, OSC），可以有效地調節尾氣空燃比、拓展催化劑的工作溫度窗口，是汽車尾氣三效催化劑（Three Way Catalysts, TWC）中的關鍵材料之一。隨著環保要求的不斷提高和相關排放法規的日益嚴格，對鈰鋯復合氧化物的熱穩定性、低溫還原性能和儲放氧能力提出了更高的要求。簡述了包括共沉淀法、溶膠-凝膠法、高能球磨法、模板法在內的鈰鋯復合氧化物常用合成方法，闡述了鈰鋯復合氧化物的基本改性機制，綜述了常見的堿土元素以及過渡金屬對鈰鋯復合氧化物的改性效果及原理，介紹了我國鈰鋯復合氧化物的市場需求、國內外主要鈰鋯生產廠家的生產技術及其主要產品性能、我國鈰鋯復合氧化物的產業化現狀及進展。最后，從研究應用和產業化發展兩個方面進行了展望。��

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 alkaline�瞖arth 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.