Catalyst for ammonia synthesis reaction

Abstract

The invention relates to a transition metal hydride catalyst for ammonia synthesis. The transition metal hydride catalyst comprises a transition metal hydride and a carrier. The catalyst for ammonia synthesis has an excellent catalytic activity, especially under low temperature and low pressure conditions (1 bar and below 300 DEG C).

Description

technical field [0001] The invention relates to catalyst technology, and in particular provides a transition metal hydride catalyst for ammonia synthesis and its application in ammonia synthesis reaction, especially suitable for ammonia synthesis at low temperature and normal pressure. Background technique [0002] Ammonia is one of the most important chemical raw materials in the world. Ammonia can be used not only as a fertilizer, but also as a very important intermediate in chemical industry. But for now, industrial ammonia synthesis needs to be realized under high temperature and high pressure conditions, so that about 1% of the world's energy is used in the ammonia synthesis industry every year. Therefore, it is of great significance to develop high-efficiency ammonia synthesis catalysts under mild conditions. [0003] Iron-based and ruthenium-based catalysts are important industrial ammonia synthesis catalysts. As the first generation of ammonia synthesis catalysts, ...

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Problems solved by technology

However, the hydrogen poisoning effect of ruthenium-based catalysts is very obvious

[0004] To sum up, although the iron-based and ruthenium-based industrial ammonia synthesis catalysts have their own advantages and disadvantages, the two catalysts still cannot achieve high-efficiency synthesis of ammonia at atmospheric pressure and low temperature (~1bar, 150~300℃).

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