As an important industrial raw material,ammonia plays an important basic supporting role in industrial development.In this paper,the development history,present situation,challenges and progress of synthetic ammonia process were briefly introduced.The possible direction of new synthetic ammonia process was provided.One important method is electrochemical synthetic ammonia process,and the other is hydrogen direct synthetic ammonia process,which uses hydrogen and nitrogen to directly react to produce ammonia.It was considered that the activity of ZSM-5 catalyst for synthetic ammonia was the highest.When the reaction temperature rose to 400℃,the concentration of reaction products reached the maximum,and when the reaction pressure rose to 15.2 MPa,the reaction rate reached the maximum.
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