Verfahren zur Herstellung eines Metallhydrids

Details

Veröffentlichungs-Nr.

EP4144688

Aktenzeichen

EP21195377

Anmeldetag

7. September 2021

Veröffentlichung

8. März 2023

Rechtsraum

EP

IPC

C01B3/00C01B6/10C01C1/02C01B6/24

Abstract

Process for preparing a metal hydride of formula A_xMH_x+m and a borane compound BH₃, starting from a product of formula A_xM(BNH)_x+m, wherein:A is an alkali metal,M is a metal different from an alkali metal, 0≤x≤2m>0,the process comprising:a'₁) reacting the metal hydride of formula A_xM(BNH)_x+m with ammonia such as obtain an ammoniated product of formula A_xM(NH₂)_x+m and a hydrogenated boron nitride compound BNH,a'₂) the hydrogenation of the ammoniated product of formula A_xM(NH₂)_x+m such as to obtain an metal hydride of formula A_xMH_x+m,the process further comprising the separation of the hydrogenated boron nitride compound BNH from the ammoniated product of formula A_xM(NH₂)_x+m before step a'₂) or from the metal hydride of formula A_xMH_x+m after step a'₂), andb) the synthesis of the borane compound BH₃, from the hydrogenated boron nitride compound BNH, the synthesis comprising:- a digestion reaction of the boron nitride compound BNH in a gaseous atmosphere containing, even consisting in, an anhydrous hydrogen halide acid gas comprising at least one halogen element Y, such as to produce a boron halide BY₃, Y being preferably chlorine Cl,- a hydrodehalogenation of the boron halide, in a hydrogen gas atmosphere to obtain the borane compound BH₃.

Anmelder

Firma

Commissariat à l'Energie Atomique et aux Energies Alternatives

Land

🇫🇷 Frankreich

Fachgebiete