Journal
FUEL PROCESSING TECHNOLOGY
Volume 176, Issue -, Pages 33-42Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fuproc.2018.03.011
Keywords
Methane coupling; Non-thermal plasma; Hybrid plasma-catalytic reactor; Nanosecond pulsed discharge; Ethylene
Funding
- European Union's Horizon 2020 Research and Innovation Programme through project Adaptable Reactors for Resource and Energy Efficient Methane Valorization (ADREM) [680777]
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In this work, we report on low energy cost methane conversion to ethylene in a hybrid plasma-catalytic reactor system. Methane is first converted to acetylene, reaching up to 23.5% yield per pass, by a nanosecond pulsed discharge (NPD), and subsequently, acetylene is hydrogenated to ethylene using a Pd-based catalyst, which is placed in the post-plasma zone. Overall, ethylene is formed as major product at 25.7% yield per pass, consuming 1642 kJ/molC(2)H(4), which is the lowest energy cost reported for plasma-assisted methane-to-ethylene conversion so far. The two-step process is carried out in a single reactor volume that aside from the discharge energy does not require any heat or hydrogen input since both are provided by methane cracking in the plasma zone itself.
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