| 摘要 |
A process for producing hydrogen or ammonia is disclosed. Steam ( 202 ) and a metal or a metal-containing compound (in the case of ammonia production, a metal nitride) are provided to a reaction zone ( 213 ) and reacted under conditions for obtaining gaseous hydrogen or ammonia, respectively. The metal or metal-containing compound is provided in the form of nanoparticles and/or nanodroplets with a BET surface area of at least 1.0 m<SUP>2</SUP>/g. The nanoparticles and/or nanodroplets may be produced in-situ, either by rapid cooling of a stream of a vapor ( 203 ) of the metal or metal-containing compound in a formation zone ( 212 ), or by feeding a stream of a precursor into the formation zone ( 212 ) and reacting the precursor with a reactant gas in the formation zone to obtain nanoparticles and/or nanodroplets. An apparatus ( 201 ) for carrying out the process is also disclosed
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