The advantage of low-pressure processes achieved by the new catalysts is not significant in terms of electricity consumption because the low pressure increases the power required for cooling and separation of synthesized ammonia. Instead of cooling separation, the separation method based on adsorbents such as alkali metal salts that selectively and reversibly absorbs ammonia is promising. Since the absorption of ammonia occurs at around 200 °C, the synthesized gas does not need to be cooled to the temperature at which ammonia condenses, which will reduce the cost of compressors and heat exchangers. This study further clarifies the benefits of the mild reaction conditions achieved by the new catalyst.