邓璐莹*,胡金朋**,郭彦炳***,陈松华****.SiO2@CeO2/Ag核壳结构复合催化剂的制备及催化性能分析[J].高技术通讯(中文),2024,34(9):988~994 |
SiO2@CeO2/Ag核壳结构复合催化剂的制备及催化性能分析 |
Preparation and catalytic properties of core-shell SiO2@CeO2/Ag |
|
DOI:10. 3772 / j. issn. 1002-0470. 2024. 09. 008 |
中文关键词: Ag; SiO2; CeO2; 核壳结构; 催化燃烧 |
英文关键词: Ag, CeO2, SiO2, core-shell structure, catalytic combustion |
基金项目: |
作者 | 单位 | 邓璐莹* | (*龙岩市漳平环境监测站龙岩 364499)
(**福建龙新三维阵列科技有限公司龙岩 364012)
(***华中师范大学化学学院武汉 430079)
(****龙岩学院化学与材料学院龙岩 364000) | 胡金朋** | | 郭彦炳*** | | 陈松华**** | |
|
摘要点击次数: 278 |
全文下载次数: 371 |
中文摘要: |
为解决目前商用催化型柴油颗粒捕集器存在的催化剂与碳烟颗粒物接触面积低、催化性能受限制的问题,设计并制备了一种SiO2@CeO2/Ag核壳结构复合微/纳米结构催化剂。X射线衍射仪(XRD)、扫描电子显微镜(SEM)及透射电子显微镜(TEM)证明了该种微米级的核壳结构复合材料的成功合成。性能测试结果表明,以此为活性组分的催化型柴油颗粒捕集器能够显著降低碳烟颗粒物的起燃温度,并表现出了良好的机械稳定性。本研究结果表明,由Ag、SiO2和CeO2 3种材料构筑的核壳结构复合微/纳米结构催化剂在碳烟颗粒物催化氧化方面具有优势。该创新性的催化剂设计为改进商用柴油颗粒捕集器的性能提供了新的可能途径。 |
英文摘要: |
To address the problem of low contact area between catalyst and carbon soot particles and the limited catalytic performance of commercial diesel particulate filter, a SiO2@CeO2/Ag core-shell structure is designed and prepared. XRD indicates the successful synthesis of the composite, while SEM and TEM characterization show that the composite microspheres possessed micron-sized core-shell structure. The performance testing results demonstrate that catalytic diesel particulate filter with this matrix is able to significantly reduce the ignition temperature of carbon soot particulate and exhibits excellent mechanical stability. The results of this study indicate that the synthetic Ag/CeO2/SiO2 has significant advantages in the catalytic oxidation of carbon soot particulate. |
查看全文
查看/发表评论 下载PDF阅读器 |
关闭 |