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物性测试综合讨论

  • 请教各位大侠怎么解读下列数据?比如孔容,表面积等,该看哪个数据?
    我们平时说的比表面积是下文中的BET. 4.939E+01 m?g(是不是49.39m2/g ?)

    多谢 多谢!


    AREA-VOLUME-PORE SIZE SUMMARY
    Sample weight: 0.1581 g

    SURFACE AREA DATA

    Multipoint BET.............................................. 4.939E+01 m?g
    Langmuir Surface Area....................................... 8.583E+02 m?g
    BJH Method Cumulative Adsorption Surface Area............... 3.846E+02 m?g
    BJH Method Cumulative Desorption Surface Area............... 3.830E+02 m?g
    DH Method Cumulative Adsorption Surface Area................ 3.977E+02 m?g
    DH Method Cumulative Desorption Surface Area................ 4.006E+02 m?g
    t-Method External Surface Area.............................. 4.939E+01 m?g
    t-Method Micro Pore Surface Area............................ 0.000E+00 m?g
    DR Method Micro Pore Area................................... 6.207E+02 m?g

    PORE VOLUME DATA

    BJH Method Cumulative Adsorption Pore Volume................ 4.320E-01 cc/g
    BJH Method Cumulative Desorption Pore Volume................ 4.317E-01 cc/g
    BJH Interpolated Cumulative Adsorption Pore Volume for pores
    in the range of 5000.0 to 0.0 ?Diameter.................... 4.320E-01 cc/g
    BJH Interpolated Cumulative Desorption Pore Volume for pores
    in the range of 5000.0 to 0.0 ?Diameter.................... 4.317E-01 cc/g
    DH Method Cumulative Adsorption Pore Volume................. 4.227E-01 cc/g
    DH Method Cumulative Desorption Pore Volume................. 4.241E-01 cc/g
    t-Method Micro Pore Volume.................................. 0.000E+00 cc/g
    DR Method Micro Pore Volume................................. 2.211E-01 cc/g
    HK Method Cumulative Pore Volume............................ 1.341E-01 cc/g
    SF Method Cumulative Pore Volume............................ 1.383E-01 cc/g
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  • 1985lvyf

    第1楼2011/04/21

    我们平时所说的BET是指Multipoint BET.. 4.939E+01 m?g
    即多点BET
    你的孔体积报告中可以看出,你的样品皆有中孔和微孔,但是t-plot报告可能参数设置不是很正确,没有得到微孔体积。且你的孔体积报告应该还缺少一个总孔体积的数据。其中BJH和DH是中孔体积的体现,t-plot,DR,HK,SF是微孔体积的体现,只是采用了不同的计算模型,具体采用哪一数据,还要看你具体的样品,如果能看一下电镜,当然比较好。
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