Page 79 - Adsorbents fundamentals and applications
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64   PORE SIZE DISTRIBUTION

                                    Sorbent                        Sorbent
                                    surface   Adsorbate layers     surface
                                                   L


                                              A        B       A     d S
                                      d S


                                                 d A     d A



                                             d A







                                                                 d 0
                                          d 0
                                                    (L − d S )
                                                  Free space
                     Figure 4.3. Three layers of adsorbate molecules in a slit-shaped adsorbent pore of width L
                     (Rege and Yang, 2000, with permission).


                                      Sorbent                    Sorbent
                                      surface  Adsorbate layers  surface
                                                     L


                                        d S
                                              A             A    d S
                                                       B
                                                     d A

                                               d A         d A


                                                      B

                                                 A          A



                                                              d 0
                                            d 0
                                                   (L − d S )
                                                  Free space
                     Figure 4.4. Possible configuration of adsorbate molecules in a slit-shaped adsorbent pore
                     measuring between 2 to 3 adsorbate molecular diameters in width (Rege and Yang, 2000,
                     with permission).
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