Li Ye, Cheng Hao, Li Deyi, Qin Yongsheng, Xie Yuming, Wang Shudong
Dalian Institute of Chemical Physics, Dalian 116023, China.
Chem Commun (Camb). 2008 Mar 28(12):1470-2. doi: 10.1039/b717873e. Epub 2008 Jan 30.
A WO3/CeO2-ZrO2 catalyst system was discovered for selective catalytic reduction of NOx with NH3; the catalyst (10 wt% WO3 loading) showed nearly 100% NOx conversion in a temperature range of 200-500 degrees C, at a space velocity of 90 000 h(-1) in a simulated diesel exhaust containing 550 ppm NOx (NO : NO2 feed ratio at 1.0), 10 vol% H2O and 10 vol% CO2; the catalyst also exhibited high temperature stability.
发现了一种用于氨选择性催化还原氮氧化物的WO3/CeO2-ZrO2催化剂体系；该催化剂（WO3负载量为10 wt%）在200-500摄氏度的温度范围内、在含有550 ppm氮氧化物（NO:NO2进料比为1.0）、10体积% H2O和10体积% CO2的模拟柴油废气中、空速为90000 h(-1)的条件下显示出近100%的氮氧化物转化率；该催化剂还表现出高温稳定性。
