Ammonia production method

Abstract

To provide a method for easily producing ammonia under mild conditions using nitrogen gas. [Solution] A step of reacting an aromatic hydrocarbon compound having an unsubstituted aromatic ring or an aromatic ring substituted with a hydrocarbon group or an alkoxy group with an alkali metal in at least one organic solvent selected from the group consisting of cyclic ether solvents and alkyl ether solvents to obtain a compound (A) consisting of an alkali metal cation and a radical anion of the aromatic hydrocarbon compound, A step of reacting the compound (A) with nitrogen to obtain a metal nitride, A step of reacting the aforementioned metal nitride with water or an acidic aqueous solution to obtain ammonia or ammonium ions, A method for producing ammonia, characterized by containing [the specified ingredient].

Claims

1. A step of reacting an aromatic hydrocarbon compound having an unsubstituted aromatic ring or an aromatic ring substituted with a hydrocarbon group or an alkoxy group with an alkali metal in at least one organic solvent selected from the group consisting of cyclic ether solvents and alkyl ether solvents to obtain a compound (A) consisting of an alkali metal cation and a radical anion of the aromatic hydrocarbon compound, A step of reacting the compound (A) with nitrogen to obtain a metal nitride, A step of reacting the aforementioned metal nitride with water or an acidic aqueous solution to obtain ammonia or ammonium ions, A method for producing ammonia, characterized by containing [the specified ingredient].

2. The method for producing ammonia according to claim 1, further comprising the step of separating and recovering the aromatic hydrocarbon compound in the organic solvent phase from ammonia or ammonium ions in the aqueous phase.

3. The aforementioned aromatic hydrocarbon compound is defined by the following formula (1): 【Chemistry 1】 (In formula (1), n1 is an integer from 1 to 6, and R independently represents a hydrogen atom, a hydrocarbon group, or an alkoxy group.) Linked polycyclic aromatic hydrocarbon compounds represented by the following formula (2): 【Chemistry 2】 (In formula (2), n² is an integer from 1 to 7, and R independently represents a hydrogen atom, a hydrocarbon group, or an alkoxy group.) The method for producing ammonia according to claim 1, characterized in that it includes at least one selected from the group consisting of condensed polycyclic aromatic hydrocarbon compounds represented by .

4. The method for producing ammonia according to claim 1, characterized in that the organic solvent is at least one selected from the group consisting of tetrahydrofuran, 2-methyltetrahydrofuran, dimethyl ether, diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, and tetraethylene glycol dimethyl ether.

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