SEARCH Articles Figures Tables Q shows the PSD of two activated carbons prepared with a N2 flow of 200 or 800 cc min. Increasing the N2 flow does not change the PSD but decreases the pore volume . Since the size of the pores is the same, finding a lower pore volume should be related to a lower number of pores. Therefore, the effect of the N2 flow is very different from that of R, even is the latter is more noticeable. [Publishers Imprint]