On the characterization of carbon blacks by various techniques

On the use of standard DRK isotherms in Dubinin’s t/F method

“…This is illustrated in Fig. 3, for a series of well characterised microporous carbons (XC-72, Table 2, and reported earlier [2,8], the present study. Table 2 External surface areas S obtained from the benzene isotherms at 293 K (see Fig.…”

“…In the case of adsorption by active carbons, the extechniques such as comparison plots [1][2][3][4][5][6][7][8], the pre-adperimental isotherm is the sum of two contributions, the sorption of n-nonane followed by nitrogen adsorption at 77 classical Dubinin-Radushkevich (DR) or Dubinin-As-K [1,3,8,9], the decomposition of the experimental isotakhov (DA) equations [4,8] and a contribution from the therm [3,[9][10][11], and immersion calorimetry [8].…”

“…For benzene at 293 K, one may e The comparison of these techniques leads to a relatively write good assessment of S , often within 10 to 15% [3,8]. An …”

“…On the other s Gravimetric adsorption measurements were carried out hand, the BET method was applied to the adsorption data following standard techniques described in detail elsefor 0.05,p /p ,0.30-0.35. s where [8].…”

“…In the modern formulation of Dubinin's theory [4,8], the DRK equation takes the form than to the value of 9.16310 mmol m used in Dubinin's standard isotherm (1).…”