Journal article
The synthesis of ammonia over a ruthenium single crystal
The ammonia synthesis rate over a ruthenium single crystal has been studied in the temperature range 598–898 K. Ammonia was synthesized from a stoichiometric (3H2: N2) gas-mixture at a pressure of approximately 2 bar. The ammonia production rate was measured in two ways: with the reactor isolated (batch mode) and under constant gas flow (flow mode).
The overall activation energy was measured to be 101±4 kJ/mol, and the turnover frequency was 2×10−2s−1at 673 K. After synthesis, the primary adsorbed species was nitrogen and there was evidence of hydrogen in the bulk of the crystal.
Language: | English |
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Year: | 1998 |
Pages: | 679-686 |
ISSN: | 10902694 and 00219517 |
Types: | Journal article |
DOI: | 10.1006/jcat.1998.2168 |
ORCIDs: | Chorkendorff, Ib |