Kinetics of methane thermal decomposition on the carbon surface in transient regime

✍ Scribed by K.I. Makarov; V.K. Pechik

• Publisher: Elsevier Science
• Year: 1969
• Tongue: English
• Weight: 527 KB
• Volume: 7
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(69)90110-9

✦ Synopsis

The initial stages of methane thermal decomposition on the surface of three carbon blacks were studied at 815°C in the pressure range l-8 atm. The reaction rate in the initial stage depends on the properties of the carbon surface. The rate for the graphitized channel black is considerably lower than that for the thermal black. The highest rate was observed for the non-graphitized channel black surface. The reaction rate changes with time and reaches a steady-state value which depends on experimental conditions. The formation of a steady state surface was found to occur at carbon black weight increase over 60 per cent. The experimental data agree well with earlier proposed chain mechanism of methane thermal decomposition.