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用共沉淀法制备了Zr0.5Ti0.5O2复合氧化物,考察了沉淀时的pH值、温度及焙烧温度对样品织构性能的影响.分别用BET、XRD、NH3-TPD对样品的织构、结构性能和表面酸性进行了表征.将经过不同温度焙烧后的样品作为载体制备成Pt/Zr0.5Ti0.5O2催化剂,考察了催化剂对C3H8、CO、NO的催化性能,并与传统的以La-Al2O3为载体的Pt/La-Al2O3汽车尾气三效催化剂进行了比较.结果表明:当沉淀时的pH=11、温度为25℃、焙烧温度为550℃时,所制得的样品具有较好的织构性能(比表面积为195m2·g-1、孔容为0.28mL·g-1)、较强的表面酸性和较宽的酸度分布;用该样品制备的汽车尾气三效催化剂与传统的以La-Al2O3作载体的Pt/La-Al2O3催化剂相比,具有更好的HC和CO催化性能和优异的NO转化性能.

参考文献

[1] Ka(s)par J,Fornasiero P,Hickey N.Catalysis Today,2003,77 (4):419-449.
[2] Das D,Mishra H K,Parida K M,et al.Journal of Molecular Catalysis A:Chemical,2002,189 (2):271-282.
[3] 陈同云,古绪鹏,胡祥余.无机化学学报,2002,18(4):378-382.
[4] Colón G,Hidalgo M C,Nav(í)o J A.Applied Catalysis A:General,2002,231 (1-2):185-199.
[5] Matsumoto S,Ikeda Y,Suzuki H,et al.Applied Catalysis B:Environmental,2000,25 (2-3):115-124.
[6] Oi-Uchisawa J,Wang S D,Nanba T,et al.Applied Catalysis B:Environmental,2003,44 (3):207-215.
[7] Machida M,Ikeda S,Kurogi D,et al.Applied Catalysis B:Environmental,2001,35 (2):107-116.
[8] 刘奉生,史文芳,龚卫国.稀有金属材料与工程,1999,28(5):326-329.
[9] Lu C M,Lin Y M,Wang I K.Applied Catalysis A:General,2000,198 (1-2):223-234.
[10] Das D,Mishra H K,Dalaia A K,et al.Catalysis Letters,2004,93 (3-4):185-193.
[11] Reddya B M,Sreekanth P M,Yamada Y,et al.Applied Catalysis A:General,2002,228 (1-2):269-278.
[12] Manríquez M E,López T,Gómez R,et al.Journal of Molecular Catalysis A:Chemical,2004,220 (2):229.
[13] 全学军,李大成(QUAN Xue-Jun,et al).无机材料学报(Journal of Inorganic Materials),2001,16(5):853 859.
[14] 徐跃萍,郭景坤(XU Yue-Ping,et al).硅酸盐学报(Journal of The Chinese Ceramic Society),1993,21 (3):280-284.
[15] Zou H,Lin Y S.Applied Catalysis A:General,2004,265(1):35-42.
[16] Karakchiev L G,Zima T M,Lyakhov N Z.Inorganic Materials,2001,37 (4):386-390.
[17] Katada N,Niwa M.Catalysis Surveys from Asia,2004,8(3):161-169.
[18] 曾健青,钟炳.石油化工,1997,27(3):167-171.
[19] González-Velasco J R,Botas J A,Ferret R,et al.Catalysis Today,2000,59 (3-4):395-402.
[20] He H,Dai H X,Ng L H,et al.Journal of Catalysis,2002,206 (1):1-13.
[21] Shi Zhong-Hua,Gong Mao-Chu,Chen Yao-Qiang.Chinese Journal of Catalysis,2006,27 (8):647-649.
[22] Zhang Huai-Hong,Gong Mao-Chu,Guo Jia-Xiu,et al.Chinese Journal of Catalysis,2004,25 (2):85-86.
[23] 郭家秀,袁书华,龚茂初,等.中国稀土学报,2006,24(2):174-178.
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