Process for preparing iron-based catalysts for the synthesis of ammonia and catalysts so obtained

摘要

A process for preparing iron-based catalysts for the synthesis of ammonia by melting of magnetite along with metal oxides as promoters, subsequent cooling of the molten mass and reduction thereof to the desired size, wherein the abovesaid cooling occurs at a rate higher than 25 C./min., preferably ranging from 100 C. to 1600 C./min., at a temperature ranging from 1700 C. to 700 C. P PThe present invention relates to a process for preparing iron-based catalysts having a high activity in the ammonia synthesis, and to the catalyst so obtained.