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Method for preparing alpha-aluminum hydride through electrochemical catalysis

A technology for preparing aluminum trihydride and catalysis, which is applied in the direction of electrolysis process, electrolysis components, etc., can solve the problems of complex preparation process of α-aluminum trihydride, difficulty in realizing industrialized production, serious energy consumption, etc., and achieve significant economic and social benefits. , to ensure the effect of activity and simple preparation process

Active Publication Date: 2022-03-11
北京珺政慧通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is that the existing α-aluminum hydride preparation process is complicated, the preparation conditions are extremely harsh, the energy consumption is serious, the production cost is high, and the yield is low , it is difficult to realize the problem of industrialized production

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  • Method for preparing alpha-aluminum hydride through electrochemical catalysis
  • Method for preparing alpha-aluminum hydride through electrochemical catalysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] S1: Weighing raw materials, including the following steps:

[0043] S1-1: Weigh NaAlH according to the mass ratio of 100:3~5:60~70:3~7:3~5 4 .

[0044] S1-2: According to NaAlH 4 Weigh anhydrous DMF with anhydrous N,N-dimethylformamide (DMF) at a mass ratio of 1:10 to 30;

[0045] S2: preparing the electrolysis-crystallization promoting mixed solution, including the following steps:

[0046] S2-1: Add 0.51g of polystyrene and 0.45g of 2,6-dimethylanisole weighed in S1 to 150g of anhydrous DMF solution, stir mechanically for 20min at a speed of 350r / min, and obtain crystallization to promote mixing liquid;

[0047]S2-2: 10g NaAlH weighed in S1 4 , 0.32g KCl was added to the crystallization promotion mixed solution, and then high-purity argon gas was continuously introduced into the mixed solution, and the mixed solution was heated to 42°C and then mechanically stirred. The mechanical stirring time was 40min, and the speed was 180r / min. - crystallization promoting m...

Embodiment 2

[0057] S1: Weighing raw materials, including the following steps:

[0058] S1-1: Weigh NaAlH according to the mass ratio of 100:3~5:60~70:3~7:3~5 4 , KCl, diisopropylamine (DIP), crystallization accelerator A, crystallization accelerator B, the NaAlH 4 The weighing of the powder needs to be carried out in a vacuum glove box, and after the weighing is completed, it is sealed and stored for future use;

[0059] S1-2: According to NaAlH 4 Weigh anhydrous DMF with anhydrous N,N-dimethylformamide (DMF) at a mass ratio of 1:10 to 30;

[0060] S2: preparing the electrolysis-crystallization promoting mixed solution, including the following steps:

[0061] S2-1: 1.72g of styrene and butadiene mixture (the mass ratio of styrene and butadiene is 1:3) and 1.14g of 3,5-dimethylanisole weighed in S1 were added to 750g of In the water DMF solution, mechanically stirred for 25min at a speed of 450r / min to obtain a crystallization-promoting mixed solution;

[0062] S2-2: 30g NaAlH weighed...

Embodiment 3

[0072] S1: Weighing raw materials, including the following steps:

[0073] S1-1: Weigh NaAlH according to the mass ratio of 100:3~5:60~70:3~7:3~5 4 , KCl, diisopropylamine (DIP), crystallization accelerator A, crystallization accelerator B, the NaAlH 4 The weighing of the powder needs to be carried out in a vacuum glove box, and after the weighing is completed, it is sealed and stored for future use;

[0074] S1-2: According to NaAlH 4 Weigh anhydrous DMF with anhydrous N,N-dimethylformamide (DMF) at a mass ratio of 1:10 to 30;

[0075] S2: preparing the electrolysis-crystallization promoting mixed solution, including the following steps:

[0076] S2-1: 1.98g of the mixture of polystyrene and styrene weighed in S1 (the mass ratio of polystyrene and styrene is 1:1), 2.37g of 2,4-dimethylanisole and 2, The mixture of 6-dimethylanisole (the mass ratio of 2,4-dimethylanisole and 2,6-dimethylanisole is 3:7) was added in 1000g of anhydrous DMF solution, mechanically Stirring fo...

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Abstract

The invention relates to the technical field of hydrogen-containing compound preparation, in particular to a method for preparing alpha-aluminum hydride through electrochemical catalysis, which comprises the following steps: S1, weighing NaAlH4, KCl, diisopropylamine (DIP), a crystallization accelerator A and a crystallization accelerator B; anhydrous N, N-dimethylformamide (DMF) is weighed according to the mass ratio of the NaAlH4 to the anhydrous N, N-DMF being 1: (10-30); s2, preparing an electrolysis-crystallization promoting mixed solution; S3, preparing an AlH3-DIP precipitate; and S4, preparing the alpha-aluminum hydride crystal. The preparation method comprises the following steps: S4-1, repeatedly washing the AlH3-DIP precipitate obtained in S3 for 3-5 times by using absolute ether; and S4-2, the washed AlH3-DIP precipitate is placed in a vacuum oven at the temperature of 70-80 DEG C to be dried for 3-5 h, and alpha-aluminum hydride crystals are obtained. According to the method, the problems of high energy consumption and high pollution of a traditional preparation system are effectively solved, the reaction preparation conditions are mild and easy to control, the yield of the alpha-aluminum hydride is high, the method conforms to the scientific, green and environment-friendly sustainable development concept, a guarantee is provided for wider application of the alpha-aluminum hydride, and the method has remarkable economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of preparation of energetic materials, in particular to a method for preparing α-aluminum hydride by electrochemical catalysis. Background technique [0002] Energy is an indispensable material basis for survival and development. With the continuous development of human economy and society and the continuous progress of science and technology, its consumption has been increasing. The traditional primary energy has been increasingly unable to meet the needs of development, and energy is exhausted. The crisis of the world is in front of mankind, and it is the unanimous goal of all countries in the world to find renewable energy with decisive advantages. At present, humans have been able to use many new energy sources such as nuclear energy, solar energy, wind energy, tidal energy, geothermal energy, and hydrogen energy, which have a certain role and effect in alleviating the energy crisis. Among them, the com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/01C25B1/50
CPCC25B1/01C25B1/50Y02P20/133
Inventor 王政王栋
Owner 北京珺政慧通科技有限公司