摘要
利用静态氮吸附仪在-196.15℃液氮气氛中,测定Ru/Al2O3催化剂的比表面积以及孔结构参数,研究了催化剂的孔容-孔径分布和吸附-脱附等温线。基于FHH多层吸附模型,利用全吸附数据计算出Ru/Al2O3催化剂的表面分形维数。结果表明,3种Ru/Al2O3催化剂的表面分形维数均约2.4,分形维数与比表面积和总孔体积无直接关联。
The specific surface area and pore structure parameters of Ru/A1203 catalyst were measured by a static nitrogen adsorption instrument at 196.15℃ in liquid nitrogen atmosphere. The pore volume pore size distribution and adsorptiondesorption isotherms of the catalyst were investigated. The surface fractal dimension of Ru/A1203 catalyst was calculated by full adsorption data according to the FHH multi layer adsorption model. The results showed that the surface fractal dimensions of three Ru/AI2O3 catalysts were about 2.4, and there was no direct relationship among the fractal dimensions, specific surface areas and pore volumes.
出处
《工业催化》
CAS
2013年第10期53-56,共4页
Industrial Catalysis
关键词
催化化学
RU
AL2O3催化剂
分形维数
比表面积
氮吸附
catalytic chemistry
Ru/A12 O3 catalyst
fractal dimension
specific surface area
nitrogenadsoprtion method
