...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >Improved NO-CO reactivity of highly dispersed Pt particles on CeO2 nanorod catalysts prepared by atomic layer deposition
【24h】

Improved NO-CO reactivity of highly dispersed Pt particles on CeO2 nanorod catalysts prepared by atomic layer deposition

机译：改善NO-CO反应高度分散的Pt粒子CeO2奈米棒由催化剂原子层沉积

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Highly dispersed platinum (Pt) nanoparticles are deposited on CeO2 nanorods via atomic layer deposition (ALD) to improve the catalytic activity towards the NO-CO reaction. For comparison, CeO2 nanosphere and CeO2 nanorod loaded Pt nanoparticle catalysts fabricated by ALD and incipient wetness impregnation (IWI) are studied. The size distribution of Pt nanoparticles of Pt/CeO2 nanosphere (Pt/CeO2-NS) and Pt/CeO2 nanorod (Pt/CeO2-NR) catalysts prepared by ALD is quite narrow and uniform (3.05 +/- 0.42 nm for Pt/CeO2-NSs, and 3.05 +/- 0.38 nm for Pt/CeO2-NRs) compared to that of the Pt-IWI/CeO2-NS catalyst prepared by incipient wetness impregnation. The combination of XPS, H-2-TPR, XAFS and in situ DRIFTS characterization techniques confirms that the strong interaction between Pt nanoparticles and CeO2 nanorods leads to the decrease of the CO poisoning effect on Pt and activation of oxygen around the interfaces. As a result, the full conversion of NO takes place at a relatively low temperature of approximate to 200 degrees C, revealing that the activity of the ALD prepared Pt/CeO2-NR catalyst is greatly enhanced.
机译：高度分散的铂纳米颗粒(Pt)通过原子层沉积在CeO2纳米棒改善催化沉积(ALD)活动向NO-CO反应。相比之下,CeO2 nanosphere和CeO2奈米棒加载Pt纳米粒子催化剂捏造的ALD和初始湿度浸渍(艾维)研究。Pt / CeO2纳米颗粒nanosphere (Pt / CeO2-NS)和Pt / CeO2奈米棒(Pt / CeO2-NR)催化剂肾上腺白质退化症患者非常狭窄,由统一的(3.05纳米Pt / CeO2-NSs + / - 0.42,和3.05 + / - 0.38海里Pt / CeO2-NRs)相比的Pt-IWI / CeO2-NS由初期的催化剂湿润浸渍。H-2-TPR XAFS和原位表征技术确认了强相互作用Pt纳米粒子与CeO2纳米线索的减少CO中毒影响Pt和激活的氧气接口。因此,不需要完整的转换在相对较低的温度大概到200摄氏度,揭示的肾上腺白质退化症患者准备活动的Pt / CeO2-NR催化剂大大增强。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号