Haber first conducted a series of experiments to explore the optimal physicochemical conditions for ammonia synthesis.
In the experiments, some of the data he obtained were different from Nestor's; he did not blindly follow authority but relied on experiments to test, and finally confirmed that Nestor's calculations were incorrect.
With the assistance of Lorenzo, a British student, Haber successfully designed a set of equipment suitable for high-pressure experiments and a process for synthesizing ammonia, which involves: blowing steam over hot coke to obtain a nearly equal volume mixture of carbon monoxide and hydrogen gas.
The carbon monoxide in the mixture further reacts with steam under the action of a catalyst, producing carbon dioxide and hydrogen gas. Then, the mixed gas is dissolved in water under a certain pressure, and carbon dioxide is absorbed to produce relatively pure hydrogen gas.