A method for preparing ammonia using plasma

The plasma chemical chain synthesis process for ammonia utilizes a plasma field to activate nitrogen gas and react it with alkaline (earth) metal hydrides. The process involves two steps: nitrogen fixation and hydrogenation, which solves the problems of high energy consumption and low catalyst efficiency in existing technologies and achieves efficient ammonia synthesis under mild conditions.

CN117923515BActive Publication Date: 2026-06-09DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202211300658.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-24
Publication Date
2026-06-09
Estimated Expiration
2042-10-24

AI Technical Summary

Technical Problem

Existing industrial ammonia synthesis processes are characterized by high energy consumption, large carbon emissions, and no significant improvement in catalyst efficiency. Furthermore, the reaction conditions are harsh, making it difficult to synthesize ammonia efficiently under mild conditions.

Method used

The plasma chemical chain synthesis process for ammonia involves activating nitrogen gas in a plasma field to react with alkaline (earth) metal hydrides in two steps: nitrogen fixation and hydrogenation, to generate NH3. A transition metal catalyst is used to enhance the activity.

Benefits of technology

This method achieves efficient ammonia synthesis under normal pressure, reduces energy consumption, increases ammonia production rate, and is simple to operate, thus having broad research and application prospects.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a preparation method for synthesizing ammonia by using plasma, and at least comprises the following steps: in a plasma generator, nitrogen gas and a nitrogen fixation carrier material are subjected to a nitrogen fixation reaction, and then subjected to a hydrogenation reaction with hydrogen gas to obtain ammonia; the nitrogen fixation carrier material comprises at least one of an alkali metal element, an alkali earth metal element, an alkali metal hydride and an alkali earth metal hydride. By loading or transition metal compounding, the activity of the nitrogen fixation carrier material can be further improved; the process can be carried out at normal pressure, and the existing ammonia synthesis cost can be significantly reduced.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Low-temperature jet flow plasma and monatomic catalysis coupled nitrogen fixation device and low-temperature jet flow plasma and monatomic catalysis coupled nitrogen fixation method

    CN110983356A

  • Novel synthetic ammonia catalyst and preparation thereof

    CN114917890A