Preparation method of ammonia borane (NH3BH3)

A technology of ammonia borane and borane, which is applied in the field of preparation of ammonia borane, can solve problems such as complex equipment and operation, and achieve the effects of moderate cost, simple synthesis process and operation, and high product purity

Inactive Publication Date: 2014-02-12
FUDAN UNIV
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  • Claims
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Problems solved by technology

Generally speaking, the main body of the above-mentioned process is divided into two steps of synthesis and extraction, and the equipment and operation used are relatively complicated.

Method used

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  • Preparation method of ammonia borane (NH3BH3)
  • Preparation method of ammonia borane (NH3BH3)
  • Preparation method of ammonia borane (NH3BH3)

Examples

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Embodiment Construction

[0019] 1. Preparation of NH in small batches 3 BH 3 device

[0020] Preparation of NH in small batches in the laboratory 3 BH 3 Available figure 1 The device, the reaction chamber is a three-necked flask, the left and right sides are inlets for ammonia gas and borane gas respectively, the middle branch of the three-necked flask is connected to a settling tube, and the settling tube is connected to a bubbler. The three-neck flask was placed in an ice bath to control the reaction temperature. Ammonia uses dry pure ammonia, and borane is produced on-site by the generator. During the reaction, the material placed in the generator is heated by an oil bath to release borane gas, which is taken out of the generator by nitrogen and then enters a three-necked bottle to react with the ammonia gas introduced to prepare ammonia borane. After the reaction is finished, the settling tube and the outlet valve of the borane generator are closed, and the reaction chamber is evacuated thro...

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Abstract

The invention belongs to the technical field of material preparation, in particular to a preparation method of ammonia borane (NH3BH3). The preparation method comprises the following steps: mixing and reacting borane gas with ammonia gas in a reaction chamber to generate ammoniated ammonia borane; further treating the obtained product in vacuum to obtain the pure ammonia borane. The preparation method is simple in process and moderate in cost; in the preparation method, no organic solvent is used; the preparation method is applicable to large-scale production.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a kind of ammonia borane (NH 3 BH 3 ) preparation method. Background technique [0002] The molecular formula of ammonia borane is NH 3 BH 3 , which is the most basic boron-nitrogen compound, has attracted widespread attention due to its high hydrogen content (19.7 wt.%) and stable hydrogen storage capacity. A lot of research work has been carried out, and a series of The demand for solid hydrogen storage materials with excellent hydrogen release performance is increasing day by day. However, due to the limitation of its synthesis cost, its high price hinders its research and popularization and application, and a new and economical synthesis process needs to be developed. [0003] The traditional method for preparing ammonia borane is to react adducted borane with ammonia. There are two main processes in this method. One (shore method) is to directly react boran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B6/13
Inventor 郭艳辉马晓华郑雄飞
Owner FUDAN UNIV
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