丙烯选择催化还原NO的研究

周黎明; 陈光文; 王树东; 吴迪镛

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丙烯选择催化还原NO的研究

催化、动力学与反应器 | 更新时间：2025-12-10

- 丙烯选择催化还原NO的研究
- SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDE BY PROPYLENE
- 化工学报 2003年第2期页码：199-203
- 作者机构：
  
  中国科学院大连化学物理研究所
- 作者简介：
- 基金信息：
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- 网络首发：2003-02-25，
  
  纸质出版：2003-02-25
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周黎明, 陈光文, 王树东, 等. 丙烯选择催化还原NO的研究[J]. 化工学报, 2003,(2):199-203.

ZHOU Liming, CHEN Guangwen, WANG Shudong, et al. SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDE BY PROPYLENE[J]. CIESC Journal, 2003, (2): 199-203.
周黎明, 陈光文, 王树东, 等. 丙烯选择催化还原NO的研究[J]. 化工学报, 2003,(2):199-203. DOI：

ZHOU Liming, CHEN Guangwen, WANG Shudong, et al. SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDE BY PROPYLENE[J]. CIESC Journal, 2003, (2): 199-203. DOI：

摘要

在以蜂窝陶瓷为载体的Pt/Al2O3催化剂上，对采用丙烯选择催化还原方法来脱除稀燃发动机尾气中NO的反应进行了实验与理论研究.建立了一维非均相反应模型，对反应过程进行了模拟，从实验与理论两方面讨论了反应温度、反应物浓度、通道特征尺度等因素的影响；并对反应过程中的内、外扩散作用作了理论分析.

Abstract

The reaction of selective catalytic reduction (SCR) of nitrogen oxide (NO) in lean-burning engine exhaust with propylene was studied on Pt/γ-Al2O3 supported by monolith honeycomb. A one-dimensional heterogeneous model was set up to simulate the process behavior of reactions

and the effects of factors

such as reaction temperature

reactant concentration

dimension of channel of monolith catalyst

were discussed in detail both by experiment and theory. The results predicted by the model were tested through experiments. With this model

the effects of inter- and intra-phase diffusion and other factors are discussed. The model shows that the NO conversion rate will rise when higher concentration C3H6 is used; the influence of hydraulic diameter is small; the reaction is controlled by the kinetics under low temperature and after the light off of C3H6 the internal diffusion becomes serious.

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