【摘要】 在77K下对ICI71-4、LB、B113-2、B113等4种高温变换催化剂进行N2吸附-脱附等温线测定,得到了孔结构参数,研究了不同催化剂的孔径分布、比表面积等孔结构变化,并利用等温吸附数据计算催化剂的分形维数。结果表明,4种催化剂均具有分形特性,分形维数在2～3之间,但其分形维数与比表面积和孔容积没有直接联系。更多还原

【Abstract】 Nitrogen adsorption isotherms of several high temperature shift catalysts,ICI71-4,LB,B113-2 and B113,were measured at 77 K,and their pore structure parameters were determined.The changes of pore size distribution,specific surface area of the different catalysts were studied,and the fractal dimensions were calculated out from the adsorption data.The results showed that the four catalysts all had fractal characteristics and their fractal dimensions were in a range of 2～3,but there was no direct relationship between fractal dimensions and specific surface areas or pore volumes.更多还原