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A method for preparing libh4 xnh3 compound

A compound and product technology, applied in the field of material preparation, can solve problems such as low economic benefits and fossil fuel pollution, and achieve the effects of low equipment requirements, convenient synthesis, and simple process

Inactive Publication Date: 2011-12-21
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main body of energy is fossil fuel, which is a non-renewable resource, but there are many shortcomings in using it as an energy source: first, the economic benefits generated by this form of utilization are very low; second, the production process of fossil fuel will be accompanied by various forms of pollution; Furthermore, with the continuous depletion of its reserves, its consumption as a form of energy has brought some pressure to other applications

Method used

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  • A method for preparing libh4 xnh3 compound
  • A method for preparing libh4 xnh3 compound
  • A method for preparing libh4 xnh3 compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 prepares LiBH 4 ·NH 3

[0036] At room temperature 25°C, 1g LiBH 4 Put it into a Schlenk test tube under argon gas. After vacuuming the test tube, slowly introduce ammonia gas. Stop feeding ammonia gas when it reaches 0.8 atm. After 20 minutes of reaction, pump the test tube to a vacuum state, and stop after 3 hours of vacuum. Reaction, the product is taken out in argon, which is mainly LiBH 4 ·NH 3 ( figure 1 Be the XRD spectrogram of gained product; figure 2 is the thermal analysis spectrum of the product).

Embodiment 2

[0037] Embodiment 2 prepares LiBH 4 2NH 3

[0038] At room temperature 25°C, 1g LiBH 4 Put it into a Schlenk test tube in argon, vacuumize the test tube, slowly feed ammonia gas, stop feeding ammonia gas when it reaches 0.8 atm, and take out the product in argon gas after reacting for 30 minutes, which is mainly LiBH 4 2NH 3 ( image 3 IR spectrogram for the resulting product; Figure 4 is the thermal analysis spectrum of the product).

Embodiment 3

[0039] Embodiment 3 prepares LiBH 4 ·3NH 3

[0040] At room temperature 25°C, 1g LiBH 4 Put it into a Schlenk test tube in argon, vacuumize the test tube, then slowly feed ammonia gas, stop feeding ammonia gas when it reaches 0.8 atm, react for 30 minutes and spread the liquid product along the tube wall, and the liquid is completely transformed into After the solid was left to stand for 30 minutes, it was taken out in argon, which was mainly LiBH 4 ·3NH 3 .

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Abstract

The invention belongs to the technical field of material preparation, and in particular relates to a preparation method of a novel light metal ammonium complex-pure LiBH4·xNH3 (3≥x>0) with a simple process. In the present invention, under an anhydrous and oxygen-free atmosphere, NH3 is contacted with pure LiBH4 or its solution, and LiBH4·xNH3 with different x values ​​is prepared by controlling the reaction conditions or processing the product. The method of the present invention has the advantages of simple process and convenient synthesis; the process does not require high equipment and is easy to realize. The LiBH4 xNH3 synthesized by the present invention can be used as a potential hydrogen storage material and other materials, and can meet the requirements of relevant production and scientific research. need.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a method for preparing LiBH 4 ·xNH 3 (3≥x>0) compound method. Background technique [0002] The energy issue is a major issue facing both our country and the world today. With the development of the national economy and the deepening of urbanization, the constraints of energy issues on economic development and the improvement of people's quality of life are becoming more and more obvious. At present, the main body of energy is fossil fuel, which is a non-renewable resource, but there are many shortcomings in using it as an energy source: first, the economic benefits generated by this form of utilization are very low; second, fossil fuel will be accompanied by various forms of pollution during the production process; Furthermore, with the continuous depletion of its reserves, its consumption as a form of energy has brought some pressure to other applications. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B6/21
Inventor 余学斌郭艳辉夏广林高梁
Owner FUDAN UNIV