II International Symposium on Carbon for Catalysis ABSTRACTS

OP-I-24
SORPTION AND CATALYTICAL PROPERTIES OF THE NANOGRAPHITE
MATERIAL
Molchanov V.V., Sсhuchkin M.N. 1 , Zaikovskii V.I., Zaitseva N.A.
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
1 Federal Nuclear Centre, Sarov, Russia
e-mail: molchanov@catalysis.ru
In the last some years a lot of researches of so-called carbon xerogels which are formed at
carbonization of xerogels of phenol-, resorcinol-, cresol-formaldehyde and some other resins
are carried out. Carbon xerogels possess a high specific surface 600-700 m 2 /g [1, 2].
Activation by oxygen, water steam or carbon dioxide allows to increase a surface up
to 1000-1500 m 2 /g [1].
In Federal Nuclear Centre (Sarov) the technology of production of carbon nanosize and
nanoporous materials (CNNM) by carbonization of porous phenol-formaldehyde resin (but
not xerogel) is developed. The studying of these materials by a method of high-resolution
electronic microscopy allows to attribute them to a class of nanographite. Materials are
presented by globules with the size 5-10 microns and the last consist of chaotically located
microblocks with the thickness in 3-4 graphene layers. The materials possess the advanced
system of micropores with the size 1,5-2 nanometers. The specific surface of samples is
550-700 m 2 /g. Varying conditions of preparation of resins and the subsequent carbonization it
is possible to change over a wide range a ratio macro-, meso- and micropores. The materials
possess the high mechanical strength. On the data of XRD the materials represents strongly
disordered graphite with unique big interlayer distances - 0,375-0,39 nanometers.
The properties of CNNM in the relation to chemical adsorption gases, to absorption of
hydrogen and catalytical properties of the metals supported on the these materials were
investigated. In relation to chemical adsorption of light hydrocarbons CNNM shows
properties more similar to the properties of silica and alumina, than carbon materials.
Comparison of absorption of hydrogen with other carbon materials shows, that CNNM
absorbs a little bit more hydrogen, than materials with comparable or even the greater specific
surface.
The nickel supported on CNNM shows unique low catalytical activity in reactions of
hydrogenation and decomposition of methane in comparison with other carbon supports such
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