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| 钙钛矿型复合氧化物纳米粒子的合成及其对一氧化碳氧化的催化性能(英文) | |
| 引用本文： | 刘源,崔秀兰,奏永宁. 钙钛矿型复合氧化物纳米粒子的合成及其对一氧化碳氧化的催化性能(英文)[J]. 天然气化学杂志, 1999, 8(2): 121-127 |
| 作者姓名： | 刘源 崔秀兰 奏永宁 |
| 作者单位： | 内蒙古工业大学化工系! 内蒙古 呼和浩特０１００６２(刘源，崔秀兰)，天津大学化工学院!天津０３０００１(奏永宁) |
| 摘 要： | 以ＮａｃＯ３－ＮａＯＨ混合溶液作为沉淀剂，采用超临界干燥技术合成了钙钛矿型ＬａＢＯ３（Ｂ：ｃｏ和Ｍｎ）和Ｌａｌ 纳米粒子。所得产品的平均粒径可达约１５ｍｍ，比表面积达３０ｍ２．ｇ－１。研究结果表明，随粒径减小和比表面积增大，ＬａＢＯ３对一氧化碳氧化的催化活性明显增加；ＬａＢＯ３中镧被锶部分取代可显著提高其对一氧化碳氧化的催化活性。 |
| 关 键 词： | 钙钛矿型复合氧化物 纳米粒子 一氧化碳 催化氧化 超临界干燥 |
SYNTHESIS OF ULTRAFINE PARTICLES WITH PEROVSKITE STRUCTURE AND ITS CATALYTIC PERFORMANCE FOR THE OXIDATION OF CO |
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| Yuan Liu,Xinlan Cui,Yongning Qin. SYNTHESIS OF ULTRAFINE PARTICLES WITH PEROVSKITE STRUCTURE AND ITS CATALYTIC PERFORMANCE FOR THE OXIDATION OF CO[J]. Journal of Natural Gas Chemistry, 1999, 8(2): 121-127 | |
| Authors: | Yuan Liu Xinlan Cui Yongning Qin |
| Affiliation: | Department of Chemical Engineeing, Inner Mongolia Polytechnic Universtiy Hohhot, Inner Mongolia 0100622; Department of Chemical Engineering, Tianjin University, Tianjin 300072 |
| Abstract: | A technique for synthesizing ultrafine LaBO3 (B : Co and Mn)and La1-xSrxBO3 with perovskite structure was developed, in Which solutionof Na2CO3-NaOH was taken as Precipitating agent and supercritical dryingmethod was used. It was shown that the mean particle size of the samplesmade through this technique reached about 15 um and its correspondingspecific surface area was 30 m2/g. The activity for CO oxidation over LaBO3increased significatly With the decrease of its particle size. In addition, thesubstitution of strontium for lanthanum in nanometer LaBO3 could elevatethe activity effectively. |
| Keywords: | carbon monoxide catalytic oxidation ultrafine peartucke perovskite supercritical drying synthesis |
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