| La_(0.8)Cu_(0.2)Ni_(1-x)M_xO_3钙钛矿氧化物的制备及催化性能研究 |
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| 引用本文： | 郭锡坤,韩福勇,孟韩,陈耀文.La_(0.8)Cu_(0.2)Ni_(1-x)M_xO_3钙钛矿氧化物的制备及催化性能研究[J].汕头大学学报(自然科学版),2010,25(4):50-56,74. |
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| 作者姓名： | 郭锡坤 韩福勇 孟韩 陈耀文 |
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| 作者单位： | [1]汕头大学化学系,广东汕头515063 [2]汕头大学中心实验室,广东汕头515063 |
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| 基金项目： | 广东省科技计划项目，国家自然科学基金资助项目 |
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| 摘 要： | 采用柠檬酸络合法制备了一系列La0.8Cu0.2Ni1-xMxO3(M分别为Mn、Fe和Co)钙钛矿复合氧化物.催化性能的测定结果表明:750℃焙烧制得的催化剂La0.8Cu0.2Ni0.8Mn0.2O3显示出良好的三效催化性能,能使贫燃条件下CO、NO和C3H6的起燃温度较低,分别为165℃、295℃和302℃,当温度高于400℃时完全转化.扫描电子显微镜(SEM)和X射线衍射(XRD)的测试分析结果表明:La0.8Cu0.2Ni0.8Mn0.2O3因具有良好的钙钛矿晶型结构,且为纳米级晶体,所以三效催化性能良好.
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| 关 键 词： | 钙钛矿 三效催化剂 溶胶-凝胶法 镍 锰 |
Preparation and Three-Way Catalytic Performance of La0.8Cu0.2Ni1-xMxO3 Peroviskite-Type Mixed Oxides |
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| GUO Xi-kun,HAN Fu-yong,MENG Han,CHEN Yao-wen.Preparation and Three-Way Catalytic Performance of La0.8Cu0.2Ni1-xMxO3 Peroviskite-Type Mixed Oxides[J].Journal of Shantou University(Natural Science Edition),2010,25(4):50-56,74. |
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| Authors: | GUO Xi-kun HAN Fu-yong MENG Han CHEN Yao-wen |
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| Institution: | 1. Department of chemistry, ,Shantou University, Shantnu 515063, (;uangdnng, China; 2. Central Laboratory, Shantou University, Shantou 515063, Guangdong, China) |
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| Abstract: | A series of La0.8Cu0.2Ni1-xMxO3（M = Mn, Fe, Co） perovskite-type were synt.hesized using citric acid sol-gel method. It is showed that La0.8Cu0.2Ni1-xMxO3 exhibited high three-way catalytic performance when it at 750℃. At lean-burn conditions, the light temperature of CO, C3H6 and mixed oxides the catalyst was calcined NO were 165 ℃, 302 ℃ and 295 ℃, respectively, the three gas could be completely converted above 400 ℃. The structure of the catalyst was analyzed preliminarily by means of X-ray diffraetion（XRD） and scanning electron microscopy（SEM ）. It is presented that they all were nanocrystal, so it exhibited good three-way catalytic performance. |
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| Keywords: | peroviskite three-way catalyst sol-gel method nickel manganese |
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