...
首页> 外文期刊>Chimica oggi: international journal of chemistry and biotechnology >Designing process-specific catalysts for cleaner, more efficient processes
【24h】

Designing process-specific catalysts for cleaner, more efficient processes

机译:设计特定过程的催化剂,以实现更清洁,更高效的过程

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

How and why size matters has been the aim of reseatch in catalysis for decades. The size and shape of metal nanoparticles and clusters determine their performance when used as catalysts in chemical processes. Controlling size and location of metal particles may also benefit the aspects of "green catalysis" which requires that environmentally friendly catalysts be designed with very high efficiency and selectivity towards the desired products thus also eliminating wastes In this paper we tun over three case studies to understand better how catalysts work at the nanoscale: Silver nanoparticles for cleaner, more efficient production of propylene oxide; Pt-Ru nanoparticle catalysts for more efficient fuel-cell vehicles; and proximity location of Pt and Ba for improving the performance of NOx storage-reduction catalysts for purification of exhaust gases from lean burn and diesel engines.
机译:几十年来,大小如何重要以及如何重要一直是重新催化的目的。金属纳米颗粒和团簇的大小和形状决定了它们在化学过程中用作催化剂时的性能。控制金属颗粒的大小和位置也可能有益于“绿色催化”方面,这要求设计环保型催化剂,对所需产物的效率和选择性非常高,从而消除浪费。在本文中,我们对三个案例进行了研究,以了解更好的催化剂在纳米级的工作方式:银纳米颗粒可用于更清洁,更高效的环氧丙烷生产;用于更高效燃料电池汽车的Pt-Ru纳米颗粒催化剂; Pt和Ba的位置和附近,以改善NOx储存还原催化剂的性能,以净化稀薄燃烧和柴油发动机的废气。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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