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【有奖交流】积极回复本帖子，参与交流，就有机会分得作者 ylm8310 的 3 个金币

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ylm8310

银虫 (小有名气)

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虫号: 821162
注册: 2009-08-03
专业: 催化化学

[交流] 【求助】BET数据分析

Single Point Surface Area at P/Po 0.20030460 :                   108.1911 m?g

   BET Surface Area:                                                 104.4650 m?g

   Langmuir Surface Area:                                           140.2481 m?g

   BJH Adsorption Cumulative Surface Area of pores
         between 17.000000 and 3000.000000 A Diameter:                22.9818 m?g

   BJH Desorption Cumulative Surface Area of pores
         between 17.000000 and 3000.000000 A Diameter:                43.7978 m?g

                                          Volume


   Single Point Adsorption Total Pore Volume of pores less than
            969.0907 A Diameter at P/Po 0.97960568:                   0.097959 cm?g

   BJH Adsorption Cumulative Pore Volume of pores
         between 17.000000 and 3000.000000 A Diameter:                   0.109933 cm?g

   BJH Desorption Cumulative Pore Volume of pores
         between 17.000000 and 3000.000000 A Diameter:                   0.119148 cm?g

                                       Pore Size


   Adsorption Average Pore Diameter (4V/A by BET):                   37.5088 A

   BJH Adsorption Average Pore Diameter (4V/A):                      191.3392 A

   BJH Desorption Average Pore Diameter (4V/A):                      108.8165 A
   第二个
Single Point Surface Area at P/Po 0.20010628 :                   34.2135 m?g

   BET Surface Area:                                                 37.3564 m?g

   Langmuir Surface Area:                                           54.2497 m?g

   BJH Adsorption Cumulative Surface Area of pores
         between 17.000000 and 3000.000000 A Diameter:                38.5158 m?g

   BJH Desorption Cumulative Surface Area of pores
         between 17.000000 and 3000.000000 A Diameter:                50.8013 m?g

                                          Volume


   Single Point Adsorption Total Pore Volume of pores less than
            1061.2418 A Diameter at P/Po 0.98141080:                   0.158888 cm?g

   BJH Adsorption Cumulative Pore Volume of pores
         between 17.000000 and 3000.000000 A Diameter:                   0.206925 cm?g

   BJH Desorption Cumulative Pore Volume of pores
         between 17.000000 and 3000.000000 A Diameter:                   0.205355 cm?g

                                       Pore Size


   Adsorption Average Pore Diameter (4V/A by BET):                   170.1317 A

   BJH Adsorption Average Pore Diameter (4V/A):                      214.8984 A

   BJH Desorption Average Pore Diameter (4V/A):                      161.6923 A


为什么做出来的BET和BJH表面积差那么多？有的BJH大，有的BET大？什么因素照成？这两种催化剂差别也不太大呀？

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