摘要
采用乙醇代替氨作脱除NOx的还原剂。用浸渍法制备一系列铜基催化剂,考察了CuO含量、反应温度和载体对催化剂活性的影响,并用TPR和BET法分别研究了铜基催化剂的还原性能及物理结构。结果显示,10%CuO/TYZp-3(合成莫来石)催化剂具有较好的催化性能,在350℃使NOx的转化率达98.7%;而10%CuO/20%TiO2--γAl2O3低温活性好,250℃时使NOx的转化率达46.4%;以-γAl2O3、-αAl2O3、SiO2、TiO2-γ-Al2O3为载体的CuO催化剂使NOx的转化率在高于400℃时均达99%左右。
Ethanol was used as a reducing agent instead of NH3 for the removal of NOx. A series of Coppersupported catalysts were prepared via impregnation method. The effects of temperature and the support were studied. The reduction activity and texture of the catalysts were examined by TPR and BET methods. It was found that 10% CuO/TYZp-3 exhibited good catalytic activity at high temperatures, and the NOx conversion reached 98.7% at 350℃; and 10% CuO/20% TiO2-γ-Al2O3 showed good catalyic activity at low temperatures, and the NOx conversion reached 46. 4% at 250℃. And at above 400℃, the NOx conversion over other CuO catalysts reached 99%.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第8期870-873,共4页
Chinese Journal of Applied Chemistry
基金
中国科学院"西部之光"2002年资助项目
关键词
铜基催化剂
乙醇
NOx
copper-supported catalyst, NOx, ethanol
