Catalyst for ultralow temperature high activty ammonia synthesis

Abstract

A super low-temperature high activity ammonia synthetic catalyst using ferrous oxide as main component, and using potassium oxide, aluminum oxide, calcium oxide as basic catalyst promoter, and also contains metals and other metallic oxide mixture which is prepared by the conventional molten method. The catalyst shows very high catalytic activity under low-temperature, it is easy to be deacidized, and possesses excellent heat-proof, antitoxin and mechanical property.

Description

Technical field: [0001] The invention belongs to an ammonia synthesis catalyst in the chemical industry, in particular to an ultra-low temperature and high activity ammonia synthesis catalyst. It is suitable for the preparation of ammonia synthesis catalyst, and the technical product is used in the synthesis of ammonia and the industry of producing pure hydrogen and nitrogen by ammonia cracking. Background technique: [0002] Before the present invention was made, the industrial ammonia synthesis catalysts all used iron oxide as the main component, and the iron oxide mainly included three kinds of ferric oxide, ferric oxide and ferrous oxide. In the catalyst of the same iron oxide, the main difference is the composition and content of the co-catalyst, which changes the performance of the catalyst, so the essential difference lies in the co-catalyst. There are no commercial reports of ammonia synthesis catalysts with ferric oxide as the main component. However, the ammonia ...

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Problems solved by technology

There are no commercial reports of ammonia synthesis catalysts with ferric oxide as the main component

In the existing various iron-based ammonia synthesis catalyst technologies, the cocatalysts are all metal oxides, and the catalytic activity and thermal stability at lower temperatures cannot fully meet the needs of industrial practical applications, and the development direction of ammonia synthesis catalysts is It is required to have higher catalytic activity at low temperature and low pressure, and finally realize the synthesis of ammonia at normal temperature and pressure. To achieve this goal, low temperature catalyst is the core technology. It is necessary to reduce the temperature and pressure used in today's industries and develop high activity catalysts at lower temperatures. , step by step towards normal temperature and pressure synthetic ammonia