摘要
对低温选择性催化还原(SCR)脱硝技术的反应机理及动力学已有较多研究。本文从反应路径和反应机制两方面评述了低温SCR的反应机理,重点从氧在低温SCR中的作用、NO在催化剂上的吸附、NH3的活化和反应模型等方面进行了深入阐述,并结合反应机理探讨了低温SCR的反应动力学,最后对低温SCR脱硝技术的深入研究提出了建议。
The mechanisms and kinetics of low-temperature selective catalytic reduction （SCR） have attracted many researchers＇ attention. The mechanisms of low-temperature SCR is reviewed by the reaction pathways and reaction models, focusing on the role of oxygen in the low-temperature SCR, the adsorption of NO over the catalyst, the nature of the active NH3 species and the governing reaction models （Langmuir-Hinshelwood or Eley-Rideal）. Moreover, combining with the mechanisms of low-temperature SCR, the kinetics of low-temperature SCR are critically discussed. Points of convergence and disagreement are underlined. The perspectives in low-temperature SCR are promoted.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2009年第6期1094-1100,共7页
Progress in Chemistry
基金
国家高技术发展计划(863)项目(No.2007AA0618025)
江苏省自然科学基金项目(No.BK2007215)资助
