• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Italian Conference on Chemical and Process Engineering >Study of the effect of Ba loading on the performances of a Pt-Ba/Al_2O_3 catalyst for lean burn applications
【24h】

Study of the effect of Ba loading on the performances of a Pt-Ba/Al_2O_3 catalyst for lean burn applications

机译：BA负载对稀燃燃烧应用Pt-Ba / Al_2O_3催化剂性能的影响研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper we have investigated the effect of Ba loading on the catalyst performances of Pt-Ba/Al_2O_3 samples in the storage-reduction of NO_x species. The higher is the Ba content, the lower is the surface area and Pt dispersion, but the NO_x adsorption process is more efficient, i.e. higher amount of NO_x are adsorbed on the catalyst surface. Calculations showed that the higher the Ba content of the catalyst, the higher the percentage of Ba involved in the reaction, up to 16% for the sample with Ba = 16.7 % w/w (amount of NO_x stored near 4 x 10~(-4) moles/g catalyst at 350°C). This effect has been associated to the involvement in the NO_x storage process of Pt-Ba neighboring species, whose amount increases on increasing the Ba loading in the investigated composition range.
机译：在本文中，我们研究了BA负载对NO_X物种储存减少的PT-BA / AL_2O_3样品催化剂性能的影响。 BA含量越高，表面积和Pt分散的较低，但NO_X吸附过程更有效，即较高量的NO_X在催化剂表面上吸附。计算表明，催化剂的BA含量越高，反应中涉及的BA的百分比越高，样品的BA = 16.7％w / w（储存在4×10附近的NO_x的量）越高，可达16％〜（ - 4）350℃的摩尔/克催化剂。这种效果与PT-BA相邻物种的NO_X储存过程的参与有关，其量增加了在调查的组成范围内增加了BA负载。

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