摘要
用小角X-射线散射法测定了Pd-Al2O3。催化剂上金属钯粒子的大小。使用少量电子密度与Al2O3。相似的有机液体──CH2I2，消除了载体氧化铝微孔的背景干涉散射，CH2I2的适宜用量与样品的比孔容有关。SAXS的分析结果与SEM结果对照认为二者基本上是吻合的。
The metal particle diameter of palladium supported on alumina was investigated using smal1 angle X-ray scattering techniques. The interfering background scattering from the microp-ores of the alumina support was eliminated by adsorption of small concentrations of CH2I2, organic liquids of electron density similar to that of the alumina- The optimum dosage of CH2I2 is correlated tospecific pore volume of sample. It was found that the average particle size determined by SAXS method was in agreement with SEM results.
出处
《工业催化》
CAS
1999年第5期59-63,共5页
Industrial Catalysis
关键词
催化剂
氧化铝
钯
粒子尺寸
小角X射线散射
small angle X-ray scattering
catalyst
alumina
palladium
particle size
