硅酸盐学报2009，Vol.37Issue(11)：1853-1858,6.
改性Cu-ZSM-11和Cu-ZSM-5分子筛催化分解一氧化氮性能
ACTIVITY OF MODIFIED Cu-ZSM-11 AND Cu-ZSM-5 ZEOLITE MOLECULAR SIEVES FOR DECOMPOSITION OF NITROGEN OXIDES
摘要
Abstract
ZSM-11 and ZSM-5 zeolite molecular sieves were synthesized by the hydrothermal method, and modified ZSM-11 and ZSM-5 type catalysts were prepared by one-step ion exchange. The prepared catalysts were characterized by X-ray powder diffraction, atomic emission spectroscopy with inductively coupled plasma atomization and Fourier transform infrared spectroscopy. The results show that the deposition amount of co-ions Cu~(2+), Ce~(3+) and Ni~(2+) in ZSM-5 type catalyst is higher than that of ZSM-11. The co-ions in ZSM-11 have a greater impact on the vibration of the ZSM-11 zeolite framework. This shows that the framework property is different in the two kinds of zeolite. The results of the catalyzing test indicate that the catalytic stability of Cu-ZSM-11 is better than that of Cu-ZSM-5 and the activity of modified Cu-ZSM-11 with Ce~(3+) and Ni~(2+) is higher than that of Cu-ZSM-11 and the corresponding modified Cu-ZSM-5. The activities of Cu-ZSM-5 and Cu-ZSM-11 first increase and then decrease with the increase of space velocity. When the space velocity reaches about 0.6 (g·s)/mL, the activity reaches the maximum.关键词
催化剂/沸石分子筛/铈/镍/氮氧化物Key words
catalysts/zeolite molecular sieves/cerium/nickel/nitrogen oxides分类
资源环境引用本文复制引用
臧玉魏,钟秦..改性Cu-ZSM-11和Cu-ZSM-5分子筛催化分解一氧化氮性能[J].硅酸盐学报,2009,37(11):1853-1858,6.基金项目
国家自然科学基金(50478069) （50478069）
江苏省自然科学基金(BK200721S)资助项目. （BK200721S）
