Ammonia synthesis catalyst KM1R is a pre-reduced iron-based ammonia synthesis catalyst containing a number of carefully selected promoters. Application KM1R is used in the majority of the world’s ammonia converters to convert synthesis gas containing hydrogen and nitrogen into ammonia. Pre-reduced for faster activation KM1R is a pre-reduced ammonia synthesis catalyst produced through carefully controlled reduction of KM1 and skin passivated to ensure safe handling. The use of KM1R significantly reduces the time required for catalyst activation, thereby minimizing plant downtime. Furthermore, the activation of KM1R only generates minor amounts of water, resulting in less aqueous ammonia produced during start-up.