摘要
应用浸渍法制备了一系列钌基催化剂,以水煤气变换为探针反应,并采用TPR、XRD、TEM和活性比表面测定等手段研究了过渡金属对Ru/Al2O3催化剂的改性机制。结果表明,过渡金属(特别是Mo)的加入提高了Ru/Al2O3催化剂的活性和耐热性能,降低了钌基催化剂的还原温度,增大了Ru/Al2O3催化剂的活性表面积、分散度及催化剂的活性中心数。
A series of ruthenium-based catalysts were prepared by impregnation. Shift reaction of Water-Gas was selected as the probe to evaluate the properties of the catalysts. The influence of transition metals on Ru/Al_2O_3 catalyst was investigated by TPR,XRD and TEM,respectively. The results indicate that the addition of transition metals (especially Mo) can increase the catalytic activity ,the heat-resistance,the active surface area, Ru dispersity and the numbers of active sites of Ru/Al_2O_3 catalyst, and can decrease the reduction temperature of Ru/ Al_2O_3 catalyst .
出处
《南昌大学学报（理科版）》
CAS
北大核心
2004年第3期246-249,共4页
Journal of Nanchang University(Natural Science)
基金
江西省自然科学基金资助项目(0220002)
