Methane pyrolysis products in a constant-volume reactor as a function of time

Published: 31 August 2022| Version 1 | DOI: 10.17632/3d4yftz66n.1
, Ambuj Punia,


The data contains information about the methane decomposition products in a constant volume batch reactor as a function of time at high pressure. Methane pyrolysis was performed at 892 K, 1093 K and 1292 K and 399 kPa for a residence time ranging from 15-300 s. The high pressure data presented will be helpful in obtaining improved reaction kinetic models and develop optimized methane pyrolysis reactors.


Steps to reproduce

Experiments were completed in a constant volume quartz batch reactor at temperatures of 892 ± 5 K, 1093 ± 6 K, and 1292 ± 8 K and initial pressure of 399 ± 4 kPa (The uncertainties represent 95% confidence intervals of the total uncertainty including bias and precision uncertainty). Multiple reaction times were analysed at each temperature to determine the gas-phase products at each reaction time and temperature. The reaction times used were 15 s, 30 s, 60 s, 180 s, and 300 s for each temperature. The amount of solid carbon generated from the experiment was not considered as it was not possible to accurately analyse the amount of solid carbon deposited on the reactor walls. The samples used had to have a molar concentration total sum of 95 % or greater with no more than 5 % of non-reactive species (Nitrogen, Oxygen, Carbon Dioxide, and Carbon Monoxide). The data was then normalised to remove the non-reactive species from the sum (see attached excel file for formula). This was done because the sample gas had such a small volume (32 mL), and it was almost impossible to remove all the other contents from the bag.


University of Alberta


Experimental Design, Pyrolysis, Hydrogen, Methane