II International Symposium on Carbon for Catalysis ABSTRACTS

PP-I-35
• surface porosity (P 245 intial and the oxidated one during 10 hours, 20 hours, and 40
hours with the following thermal treatment of oxidated patterns surfaces);
• graphitization at 3000 K (P 245);
• aggregates polydispersion (N-339).
Table 1. Surface fractals of some patterns of dispersed carbon in macromolecular medium.
Dispersed carbon Surface fractal Dispersed carbon Surface fractal
P 514 1,42 N 326 1,49
P 234 1,60 N 375* 1,55
P 245 initial
graph
Oxidated during
10 hours
20 hours
40 hours
1,62
1,60
1,80
1,80
1,65
N 339*
P 145
P 161
N 234
P 267-E
N-339 (1)
unimodal
N-339 (2)
bimodal
1,80
1,88
1,74
1,60
1,44
1,65
1,65
* Carbon black received by “advanced” technology.
Model identification
The experimental data show selectivity and specificity of the new qualitative method of
dispersed carbon structure characterization. Its informational matter is defined by prior items
about the presence of dispersion changes of spheroid particles and surface pores, activity and
aggregates divarication degree.
The fractal dependence on material polydispersion has not been revealed. The
contributions from different measured parameters of modelling to the fractal value have been
determined.
It has been discovered that fractal dimension of macromolecules adsorption in the
presence of all structure changes possesses the least value as it is shown for P 267-E pattern.
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