Green ammonia has been used as reference, which is
produced from renewable energies without the need to capture CO2 emissions.
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H2 is produced from natural has via steam methane reforming.
Ammonia is produced by Haber-Bosch process and nitrogen
is supplied through air separation process (cryogenic technology).
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H2 is still produced from natural gas via steam methane
reforming but the CO2 emissions coming from the process
are captured and stocked.
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It consists of the production of H2 by SOEC electrolysis based on a
renewable energy namely photovoltaic. This scenario does not involve
ammonia, the direct use of H2 was chosen to assess the influence of
the transformation of hydrogen to ammonia on environmental impacts.
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