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A comment on Reducing Iron Oxide with Ammonia: A Sustainable Path to Green Steel. Parent comment

Re:Reducing Iron Oxide with Ammonia: A Sustainable Path to G... by adastra22 on Sunday April 02, 2023 @04:13PM (#35414655)
Anywhere you have water you have hydrogen.
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Re:Reducing Iron Oxide with Ammonia: A Sustainable Path to G... by to11mtm on Sunday April 02, 2023 @04:26PM (#35414811)
Interestingly, the paper mentions that the reactions do produce (some) hydrogen, which could perhaps be recaptured.

However, a bigger concern upon a glance is that this process does produce NOx emissions...

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Re:Reducing Iron Oxide with Ammonia: A Sustainable Path to G... by londons_explore on Sunday April 02, 2023 @05:08PM (#35415229)
NOx from big industrial processes tends not to be an issue. Catalytically reducing it to N2 and O2 is easy, and at the same time, you get out 'free' high grade heat, which there is usually some use for elsewhere in the plant.
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Re:Reducing Iron Oxide with Ammonia: A Sustainable Path to G... by jabl on Monday April 03, 2023 @07:18AM (#35421630)
> Interestingly, the paper mentions that the reactions do produce (some) hydrogen, which could perhaps be recaptured.

The hydrogen is used for reducing the iron oxides, that's the whole point of the process! That is,

FeXOY + H2 => Fe + H2O

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