Propylene desorption analysis were

Propylene desorption analysis were performed with a flow-rate of helium of 4.5–5.2 310 m /s (see details in Table 6) and the results are shown in Fig. 11. To confirm the absence of external resistances another set of experiments were performed using a higher flow rate between 6.2 and 6.8 310 m /s (see Fig. 12). The final slopes in a semi-logarithmic plot are coincident supporting the assumption of no film transfer resistances. These experiments were performed using extrudates of R 51.1310m and L55.10m that can be considered as infinite cylinders for macropore diffusion [48].