A Study of ¹⁵N/¹⁴N Isotopic Exchange over Cobalt Molybdenum Nitrides.

ABSTRACT: The ¹⁴N/¹⁵N isotopic exchange pathways over Co₃Mo₃N, a material of interest as an ammonia synthesis catalyst and for the development of nitrogen transfer reactions, have been investigated. Both the homomolecular and heterolytic exchange processes have been studied, and it has been shown that lattice nitrogen species are exchangeable. The exchange behavior was found to be a strong function of pretreatment with ca. 25% of lattice N atoms being exchanged after 40 min at 600 °C after N₂ pretreatment at 700 °C compared to only 6% following similar Ar pretreatment. This observation, for which the potential contribution of adsorbed N species can be discounted, is significant in terms of the application of this material. In the case of the Co<

SUBMITTER: Hunter SM 

PROVIDER: S-EPMC3831547 | biostudies-literature | 2013 Aug

REPOSITORIES: biostudies-literature