Impact of reactor materials on methane decomposition for hydrogen production

[Display omitted] •Investigation on the effects of operating parameters on hydrogen production in a lab-scale reactor.•Catalytic activity of reactor’s wall on methane decomposition shows no significant change with time.•Methane decomposition over the reactor’s internal surface shows temperature and...

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Bibliographic Details
Published in:Chemical engineering research & design 2021-10, Vol.174, p.127-136
Main Authors: Abbas, Hazzim F., Ashik, U.P.M., Mohammed, Salam A., Daud, Wan Mohd Ashri Wan
Format: Article
Language:English
Subjects:
Activated carbon
Catalytic activity
Catalytic methane decomposition
Decomposition
Decomposition reactions
Hydrogen
Hydrogen production
Methane
Reactor effect
Reactor materials
Stainless steel
Stainless steels
Steel construction
Surface layers
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Summary:[Display omitted] •Investigation on the effects of operating parameters on hydrogen production in a lab-scale reactor.•Catalytic activity of reactor’s wall on methane decomposition shows no significant change with time.•Methane decomposition over the reactor’s internal surface shows temperature and VHSV dependencies.•Quartz lined metal reactor could eliminate the influence of the reactor’s metal up to 925°C.•The results of EDAX confirm detachment of Ni from the reactor’s internal surface. In this study, the catalytic effect of the internal surface of reactors constructed from stainless steel (SS310) for hydrogen production via methane decomposition has experimentally been proved and compared with a quartz-lined reactor. The effects of the methane decomposition temperature and volume-hourly-space velocity (VHSV) on hydrogen production, conversion of methane, and initial decomposition rates were investigated in an SS310 lab-scale reactor. Within the duration of the experiments, no change was recorded for hydrogen and methane concentration in all the experiments. The catalytic activity of the SS310 reactor's internal surface increased with increasing methane decomposition temperature (850−950°C) and decreasing VHSV (37−52h−1). The as-produced carbon was characterized using surface texture analysis, X-ray, and SEM-EDX.
ISSN:0263-8762
1744-3563
DOI:10.1016/j.cherd.2021.08.005