Initial rate of formation of pyrocarbon on graphite

Journal Article · · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:5863476

Tesner, P A; Gorodetskii, A E; Denisevich, E V; Tekunova, T V

The initial rates of formation of pyrocarbon from methane on a graphite surface at 900 and 1000/sup 0/C and pressures of 1.5 and 0.1 MPa, respectively, were measured. The average sizes of the crystalline grains for pyrocarbon films obtained for various treatment times were determined by reflection electron diffraction. It is shown that as the thickness of the pyrocarbon film increases, its rate of formation increases, whereas the sizes of the crystalline grains decrease. The pyrocarbon film that grows at 1000/sup 0/C at a constant rate contains crystalline grains with an average size of 60 nm, which is in agreement with the results previously obtained on quartz. 1 figure, 1 table.

• Research Organization: Inst. of Physical Chemistry, Moscow, USSR
• OSTI ID: 5863476
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 23:5; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
034000 -- Natural Gas-- Combustion
36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
ALKANES
CARBON
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COHERENT SCATTERING
COMBUSTION
DATA
DIFFRACTION
ELECTRON DIFFRACTION
ELEMENTAL MINERALS
ELEMENTS
EXPERIMENTAL DATA
FILMS
GRAPHITE
HYDROCARBONS
INFORMATION
KINETICS
MEDIUM PRESSURE
METHANE
MINERALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
PARTICLE SIZE
PRESSURE DEPENDENCE
PYROLYTIC CARBON
REACTION KINETICS
SCATTERING
SIZE
SYNTHESIS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
VERY HIGH TEMPERATURE