Ammonia Synthesis at Atmospheric Pressure

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Science  02 Oct 1998:
Vol. 282, Issue 5386, pp. 98-100
DOI: 10.1126/science.282.5386.98

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Ammonia was synthesized from its elements at atmospheric pressure in a solid state proton (H+)–conducting cell-reactor. Hydrogen was flowing over the anode and was converted into protons that were transported through the solid electrolyte and reached the cathode (palladium) over which nitrogen was passing. At 570°C and atmospheric pressure, greater than 78 percent of the electrochemically supplied hydrogen was converted into ammonia. The thermodynamic requirement for a high-pressure process is eliminated.

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