(1. 昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室，昆明 650106；
2. 昆明貴研催化劑有限責(zé)任公司 云南省貴金屬催化材料工程技術(shù)研究中心，昆明 650106)
摘 要: 儲(chǔ)氧材料是汽車尾氣凈化三效催化劑的關(guān)鍵材料之一，決定了催化劑的性能及使用壽命。隨著歐V排放法規(guī)的實(shí)施，對(duì)鈰基儲(chǔ)氧材料的性能提出了更嚴(yán)格的要求。CeO2是汽車尾氣凈化催化劑的一個(gè)重要組分，稀土、過渡金屬、貴金屬的摻雜都能在一定程度上提高CeO2的熱穩(wěn)定性、儲(chǔ)氧能力和催化活性。綜述了用于三效催化劑中的儲(chǔ)氧材料鈰基氧化物近年來的研究狀況，闡述了Zr、La、Pr、Sn和Ti等非貴金屬的摻雜、Pd、Ru、Pt等貴金屬的摻雜對(duì)CeO2儲(chǔ)氧性能的影響，總結(jié)了金屬摻雜的CeZr基多元氧化物和CeZrAl的研究現(xiàn)狀。
關(guān)鍵字: CeO2-ZrO2；非貴金屬；貴金屬；儲(chǔ)氧能力
（1. State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,
Kunming Institute of Precious Metals, Kunming 650106, China;
2. Precious Metal Catalytic Materials Engineering Technology Research Center in Yunnan Province,
Kunming Sino-platinum Metals Catalysts Co., Ltd., Kunming 650106, China）
Abstract:Oxygen storage material is one of the key materials in automobile exhaust catalyst which determines the catalytic performance and life of three-way catalyst. With the implementation of Euro V emission regulations, more strict requirements are presented for the performance of ceria-based material. As an important component in the catalyst, its thermal stability, oxygen storage capacity and catalytic activity can be improved by doping of rare earth, transition metals and precious metals to some extent. The recent research status about ceria-based oxygen storage materials which used in three-way catalyst were reviewed, the effects of non-noble metal doping such as Zr, La, Pr, Sn, Ti, precious metals doping such as Pt, Pd, Ru on the properties of CeO2 oxygen storage capacity were expounded, and the current research situation about metal modification ternary CeZr-based composite oxides and CeZrAl were also introduced.
Key words: CeO2-ZrO2; non-noble metals; precious metals; oxygen storage capacity
