High Temperature Decomposition of Methane on Quartz Pellets
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- Institutt for fysikk 
This work has shown that pure methane, when exposed to quartz at a temperatures of 900°C and 1000°C, cracks and deposits carbon at a near constant rate. The deposition rates for the individual temperature levels were shown to differ by a factor of approximately 7, where experiments at 1000°C showed the highest rate of deposition and those at 900°C the lowest.The surfaces of the samples showed a definite increase after the treatment. While not definite, there were signs that surface area could be a function of deposited carbon mass. There were not observed any weight increase on the sample treated at 700°C, andonly small amounts on the sample at 800°C, indicating a cut-off temperature for the reaction in this interval.