(39b) Methane Decomposition Over Graphene Edges For Co And CO2-Free Hydrogen Production
AIChE Annual Meeting
2007
2007 Annual Meeting
Nanomaterials for Energy Applications
Nanomaterials for Hydrogen Production and Fuel Cells
Monday, November 5, 2007 - 8:55am to 9:20am
The decomposition of methane is an environmentally attractive approach to CO and CO2-free hydrogen production. In this work, we use Density Functional Theory and Statistical Thermodynamics to investigate the growth of graphene in a methane atmosphere in the absence of metallic particles. Our results indicate that the graphene edge itself can be used as a catalyst for methane decomposition, as the active sites are continually regenerated by the deposition of carbon from methane. Furthermore, since no other gases are produced in the process, the costs of CO2 sequestration and hydrogen purification from CO are eliminated. We also discuss the conditions at which this process is thermodynamically favorable.