II International Symposium on Carbon for Catalysis ABSTRACTS

CATALYSTS ON CARBON MATERIALS BASIS: TECHNOLOGICAL ASPECTS
AND TENDENCIES
PL-1
Likholobov V.A.
Institute of Hydrocarbons Processing SB RAS, Omsk, Russia
e-mail: val@incat.okno.ru
Catalysts on carbon carriers find wide application in petrochemical and organic synthesis
processes. The most of them contains supported solid phases of different chemical
compounds (acids, for example polyphosporic acid; salts, for example zinc acetate, metal
chlorides, for example mercury, palladium, platinum, etc.). Despite on carbon carrier inertness
to reaction mediums (catalytic reactions reagents) its physical-chemical properties influence
essentially on supported component catalytic properties. Therefore both determination of the
nature of this influence and revealing of roads to achieve necessary state of active compounds
are actual direction of investigations in the field of scientific base of preparation of carbonbased
catalysts.
The data of physical-chemical and catalytic investigations of mechanisms of formation of
catalysts containing the following substances as supported component:
a. phosphoric acid (catalysts for olefins oligomerization);
b. metallic palladium (hydrogenation catalysts)
are presented in this report.
The forming stages of active centers of these catalysts from supported precursor have
been studied using the wide set of physical-chemical analysis methods (XPS, NMR, HREM,
XRD). On this basis we have concluded: chemical composition (functional cover) of carbon
surface and carbon crystallite nanotexture (type of crystallite planes, exposed on the surface
of carbon material particle) influence on the characteristics of these stages.
The obtained data have been used for improvement of silicophosphate-based propylene
oligomerization catalysts. The parameters of synthesis of entered active phase in carbon
matrix have been established. These parameters provide the achievement of catalyst high
activity, selectivity and stability. Revealed regularities have been underlay in the basis of
technology of synthesis of improved catalysts for propylene oligomerization and alphamethylstyrol
dimerization.
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