Comparison of the Activity of Ru-K/Sibunit Catalysts in Ammonia Synthesis and Decomposition.

Ru-K/Sibunit catalysts with different molar ratio of promotor and active component were studied in the lowtemperature synthesis and decomposition of ammonia. It was shown that activity of the catalysts in the synthesis reaction increases with the molar ratio of potassium and ruthenium: 0.087 and 0.397 mmol NH3/gcat*h for K/Ru = 0.5 and 2.5, respectively, at a temperature of 350 C, whereas in the decomposition reaction the activity decreases and is equal to 349.2 and 73.8 mmol NH3/gcat*h, respectively, for K/Ru = 0.5 and 2.5 at 450 C. [ABSTRACT FROM AUTHOR]
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