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Science 2 October 1998:
Vol. 282. no. 5386, pp. 98 - 100
DOI: 10.1126/science.282.5386.98
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Reports

Ammonia Synthesis at Atmospheric Pressure

George Marnellos, Michael Stoukides

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.

Chemical Engineering Department and Chemical Process Engineering Research Institute, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)