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6216969 
Journal Article 
Hydrogen production by catalytic decomposition of methane over activated carbons: kinetic study 
Han, GY; Jun, JH; Kim, MH; Kong, SJ; Lee, BK; Lee, EK; Lee, TJ; Yoon, KJ 
2004 
Yes 
International Journal of Hydrogen Energy
ISSN: 0360-3199 
29 
2 
187-193 
WOS:000187360000009 
Several domestic activated carbons were tested as the catalyst for decomposition of methane. All the activated carbons showed similar deactivation pattern. Mass transport effect in the catalyst particles was observed and the pore mouth blocking appeared to occur noticeably especially in large particles. Between different kinds of the activated carbons, no discernible trend was observed between the initial activity and the surface area, and the initial activities lay in a relatively narrow range. The reaction orders were 0.5 and the same for different samples of the activated carbon. The activation energies were also about the same, ca. 200kJ/mol, regardless of the kind and suppliers. These results indicate that the reaction mechanism is the same for all the activated carbons. Ashes in the activated carbons do little affect the catalytic activity. 
Activated carbon; Deactivation; Hydrogen; Kinetic parameters; Mass transport effect; Methane decomposition