This discussion focuses on determining reaction kinetics and conversion rates for ammonia synthesis, specifically using iron and Ruthenium catalysts. The participants highlight the complexity of finding reliable kinetic data, noting that the rate constants for catalyzed ammonia synthesis are system-specific and influenced by the catalyst's quantity, quality, and state. They emphasize that optimizing yield may require adjustments in pressure and temperature rather than solely relying on catalyst choice. A resource is provided for further reading, although it may not contain the exact numerical data sought.
PREREQUISITESChemical engineers, process designers, and researchers focused on ammonia synthesis and catalytic reaction optimization will benefit from this discussion.
I see but our professors want us to find an article that explains the reaction kinetics and conversion. We can't start doing mass balance because of the lack of information about the conversion (we do not need the kinetics right now). But thanks for the the source. It seems like a useful article.mjc123 said:It is complicated because the kinetics will depend on the quantity, quality and state of the catalyst. There won't be a rate constant for "catalysed ammonia synthesis", it will be specific to your system. Moreover, the reaction is an equilibrium, so the best way to increase yield may be via the pressure and temperature, not the catalyst. This might be helpful: http://pubman.mpdl.mpg.de/pubman/item/escidoc:736938/component/escidoc:932945/Ammonia+Synthesis.pdf. I don't think it gives you the numbers you want, but I don't think those numbers exist as such; see e.g. the turnover rates in Table 1, dependent on particle size.