Innovative technology for underground clean in situ hydrogen generation: Experimental and numerical insights for sustainable energy transition

Aysylu Askarova, Tatiana Alekhina, Evgeny Popov, Pavel Afanasev, Aliya Mukhametdinova, Alexey Smirnov, Alexey Cheremisin and Elena Mukhina

Renewable Energy, 2025, vol. 240, issue C

Abstract: Hydrogen production in subsurface reservoirs attracts global research interest for its potential in sustainable energy generation and climate change mitigation. However, limited experimental data make optimizing in situ hydrogen generation (ISHG) processes under reservoir conditions challenging. ISHG combines reverse methane combustion with steam methane reforming (SMR), leveraging existing reservoir infrastructure to generate hydrogen efficiently while minimizing surface emissions. The primary objective is to enhance hydrogen yield by investigating key variables, such as catalyst type, water saturation, and cyclic operational modes. Results indicate that cyclic combustion followed by SMR can boost hydrogen yield by up to 68 % in controlled reservoir settings, utilizing combustion heat to drive reactions efficiently.

Keywords: Hydrogen production; Sustainable energy; Steam methane reforming; In situ combustion; Catalysts; Numerical simulation (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:240:y:2025:i:c:s0960148124023279

DOI: 10.1016/j.renene.2024.122259

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