NTP提升NSR催化剂储存性能的实验研究

被引：3

作者：

陈波 ^{[1
]}

吴宇煌 ^{[1
]}

杨学昌 ^{[1
]}

李俊华 ^{[2
]}

机构：

[1] 清华大学电机工程与应用电子技术系

[2] 清华大学环境科学与工程系

来源：

高电压技术 | 2008年 / 10期

关键词：

低温等离子体; 介质阻挡放电; 氮氧化合物; NOx储存还原; 程序升温脱附; 催化剂;

D O I：

10.13336/j.1003-6520.hve.2008.10.010

中图分类号：

U464.136 [燃料供给系统];

学科分类号：

摘要：

为了研究低温等离子体(NTP)对NOx储存还原(NSR)催化剂吸附储存性能的促进作用,设计了一套以石英玻璃为介质的介质阻挡放电反应器,以NO/O2/N2模拟稀燃发动机尾气,结合自制催化剂,在不同温度和不同NTP、催化剂结合方式的情况下进行了程序升温脱附(TPD)实验。实验研究表明:NTP的引入,可以有效延长催化剂的吸附饱和时间;催化剂位于NTP中时,对NOx的储存能力明显得到增强,比位于NTP之后效果更好;由于NTP的协同作用,催化剂的脱附峰向低温区移动;吸附温度为100～300°C,NTP对催化剂的吸附储存均有促进作用,且在较低温度下更为明显。

引用

页码：2145 / 2149

页数：5

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