Gerhard Ertl showed that the first steps of this reaction followed the Langmuir-Hinshelwood scheme and elucidated that potassium donates electrons to neighboring atoms to promote this reaction. Ertl also determined that this reaction's rate-determining step was the cleavage of the (*) nitrogen molecule and showed how iron acts as a catalyst in this reaction, serving as a substrate for three separate additions of hydrogen. The second of this reaction's namesakes developed it into an industrial process while working for BASF. For 10 points, name this reaction that makes 
Gerhard Ertl showed that the first steps of this reaction followed the Langmuir-Hinshelwood scheme and elucidated that potassium donates electrons to neighboring atoms to promote this reaction. Ertl also determined that this reaction's rate-determining step was the cleavage of the (*) nitrogen molecule and showed how iron acts as a catalyst in this reaction, serving as a substrate for three separate additions of hydrogen. The second of this reaction's namesakes developed it into an industrial process while working for BASF. For 10 points, name this reaction that makes ammonia from hydrogen and nitrogen.
Gerhard Ertl showed that the first steps of this reaction followed the Langmuir-Hinshelwood scheme and elucidated that potassium donates electrons to neighboring atoms to promote this reaction.
{Haber}-{Bosch} process