Soot formation in isothermal pyrolysis of carbon tetrachloride and its mixture with methane

The formation of soot during pyrolysis of tetrachloride carbon in the temperature interval 1423–1623 K and its mixtures with methane at 1573 K is studied under conditions close to the isothermal ones. The induction periods of soot formation from ССl$_4$ are measured. The equations to calculate the induction period of soot formation, the concentration of soot particles, and its specific surface as a function of the temperature and concentration of ССl$_4$ are derived. The inhibition of soot formation is observed in the isothermal pyrolysis of a ССl$_4$ – СН$_4$ mixture. It is shown that the particle nuclei are formed only from ССl$_4$, and the CH$_4$ molecules are spent only for the heterogeneous growth of the formed particles.