Research on the Passivation Process of Iron Nanopowder as Catalyst for Ammonia Synthesis

Abstract

Abstract This paper aims to study a passivation technology and process of iron nanopowder, and provides basic theory and experimental data for promoting the practical application of iron nanopowder as a high-efficiency catalyst in the production of ammonia. There are two specific objectives. The first one is to provide a nanometal powder passivation device to prevent the nano metal powder from being oxidized and deactivated. The second one is to provide a method for using the nano metal powder passivation device to passivate the nano metal powder. Meanwhile, the research on iron nano-powder passivation technology and process is also beneficial to the application of iron nano-materials in other fields. The metal nanopowder passivation equipment provided in this paper can control the passivation reaction speed by adjusting the ratio and flow rate of the passivation gas during the passivation process, and identify the occurrence and stop of the passivation reaction by detecting the composition of the passivation reactant. Overall, the technology has the advantages of easy operation, uniform powder passivation, adjustable reaction speed, high product purity, etc. Therefore, it is suitable for industrial production.