碳俄歇电子能谱数值分析在催化方面的应用  

Carbon XAES numerical analysis and application in catalysis

作　　者：赵晓红[1] 孙浩[2] 刘炳泗[2] 

机构地区：[1]天津大学理学院数学系,天津300072 [2]天津大学理学院化学系,天津300072

出　　处：《计算机与应用化学》2007年第6期746-749,共4页Computers and Applied Chemistry

摘　　要：通过卷积法和最小二乘法,处理Ga-Mo／HZSM-5催化剂上形成碳的XAES数据。同时,建立了光滑XAES数据点的数学模型。由碳的KVV俄歇光谱数据一阶(dN／dE)和二阶(d2N／dE2)导数结果表明,二阶导数光谱的特征峰能与碳的理论态密度关联,获得相关碳的精细结构信息与催化剂的性能相符。XAES data for the carbon species formed over Ga-Mo/HZSM-5 catalyst are numerically treated by the procedures of the convolution and least squares. In the meantime, the mathematical model of smoothing XAES datum points is developed. The results on the first （dN/dE） and second （d^2N/dE^2） derivative of carbon KVV XAES indicate that the specific peaks of second derivative spectrum can correlate with the theoretical density of state for carbon species. The information on the fine structure of carbon species obtained is in accordance with the catalyst performance.

关 键 词：Ga-Mo/HZSM-5催化剂 碳沉积 数学模型 XAES导数 最小二乘法 

分 类 号：O643[理学—物理化学]