燃料化学学报2011，Vol.39Issue(6)：465-470,6.
SCR脱硝催化剂失活及其原因研究
Discussion on the deactivation of SCR denitrification catalyst and its reasons
商雪松 1陈进生 1赵金平 1张福旺 1徐亚 1徐琪1
作者信息
- 1. 中国科学院城市环境研究所，福建厦门361021
- 折叠
摘要
Abstract
The denitrification behaviors of fresh and used honeycomb SCR catalysts were compared and the deactivation reasons were analyzed by using Fourier transformation infrared spectra (FT-IR), N2 adsorption/ desorption, X-ray diffraction (XRD), and scanning electron microscope (SEM). The results show that the functional groups on the surface of the used catalyst are changed and the specific surface area of the used catalyst decreases seriously. Moreover the TiO2 crystallite of used catalyst is changed and some nano-particles aggregate on the surface of the used catalyst. The reason of the deactivation of use catalyst is the unexpected high temperature ( e. g. t> 650℃). Otherwise, the water soluble ions, arsenic and phosphorus in the deposit on the surface of the used catalyst can also affect the catalytic activity.关键词
选择性催化还原/催化剂/失活/评价Key words
SCR/ catalyst/ deactivation/ evaluation分类
化学引用本文复制引用
商雪松,陈进生,赵金平,张福旺,徐亚,徐琪..SCR脱硝催化剂失活及其原因研究[J].燃料化学学报,2011,39(6):465-470,6.
