| 铈基和镧基复合氧化物催化剂催化碳烟燃烧性能研究 |
| |
| 引用本文： | 孙丹,吴钢,李宗霖,黎思杰,冯国达. 铈基和镧基复合氧化物催化剂催化碳烟燃烧性能研究[J]. 西华大学学报(自然科学版), 2022, 41(5): 18-27. DOI: 10.12198/j.issn.1673-159X.4584 |
| |
| 作者姓名： | 孙丹 吴钢 李宗霖 黎思杰 冯国达 |
| |
| 作者单位： | 1.长沙理工大学汽车与机械工程学院, 湖南 长沙410000 |
| |
| 基金项目： | 国家自然科学基金(51976016)；湖南省自然科学基金(2020JJ4616) |
| |
| 摘 要： | 文章采用浸渍法、水热合成法和共沉淀法制备了3种不同类型的碳烟催化剂：CeFeCo、La-Mn-O和BiCeO。通过对3种样品扫描电镜(SEM)、X射线衍射(XRD)、X射线电子能谱(XPS)和氢气程序升温还原(TPR)等表征结果进行比较分析，发现：La-Mn-O样品中吸附氧的占比量最大；CeFeCo样品中的金属离子含量最多，且Ce3+含量大于BiCeO样品。在氢气程序升温还原中，可以观察到CeFeCo具有最低温的还原峰，在283℃左右。最后通过程序升温氧化反应系统对3个样品进行活性评估，在紧密接触情况下CeFeCo、La-Mn-O和BiCeO样品催化50%碳烟氧化所需的温度，即T50分别为329、355和374℃，与碳烟燃烧的空白组相比，T50分别降低了265、239和220℃。这表明3种催化剂均成功制备并且具有良好的催化碳烟燃烧性能，特别是CeFeCo催化剂表现出的低温催化燃烧性能最好。
|
| 关 键 词： | 碳烟 复合氧化物催化剂 催化燃烧 表征分析 |
| 收稿时间： | 2022-07-10 |
Study on the Catalytic Soot Combustion Properties of Cerium- and Lanthanum-Based Composite Oxide Catalysts |
| |
| SUN Dan,WU Gang,LI Zonglin,LI Sijie,FENG Guoda. Study on the Catalytic Soot Combustion Properties of Cerium- and Lanthanum-Based Composite Oxide Catalysts[J]. Journal of Xihua University(Natural Science Edition), 2022, 41(5): 18-27. DOI: 10.12198/j.issn.1673-159X.4584 |
| |
| Authors: | SUN Dan WU Gang LI Zonglin LI Sijie FENG Guoda |
| |
| Affiliation: | 1.School of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410000 China |
| |
| Abstract: | Three different types of carbon soot catalysts, CeFeCo, La-Mn-O and BiCeO, were prepared by impregnation, hydrothermal synthesis and co-precipitation methods. By comparing and analyzing the characterization results of the three samples, such as scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and H2-temperature programmed reduction (TPR), it can be found that La-Mn-O sample has the largest proportion of chemisorbed oxygen, CeFeCo sample has the largest metal ion content, and Ce3+ content is higher than BiCeO sample. It can be found that CeFeCo has the lowest reduction peak at about 283 ℃ in the H2-TPR. Finally, the activities of the three samples were evaluated by a temperature-programmed oxidation reaction system. The temperatures required to catalyze the oxidation of 50% soot for CeFeCo, La-Mn-O and BiCeO samples in tight contact were 329, 355 and 374 ℃, respectively, which were reduced by 265, 239 and 220 ℃, compared with the blank group. This indicates that all three catalysts were successfully prepared and had good catalytic soot combustion performance, and especially the CeFeCo catalyst exhibited the best low-temperature catalytic combustion performance. |
| |
| Keywords: | |
|
| 点击此处可从《西华大学学报(自然科学版)》浏览原始摘要信息 |
|
点击此处可从《西华大学学报(自然科学版)》下载免费的PDF全文 |
|
