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Organic matter and ammonia borane compounded hydrogen storage material and preparation method thereof

A technology for composite ammonia borane and hydrogen storage materials, which is applied in the field of organic composite ammonia borane hydrogen storage materials and its preparation, can solve the problems of lack of mature systems and achieve lower thermal release hydrogen temperature, fast hydrogen release kinetics, and release The effect of low heat

Active Publication Date: 2012-07-04
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although some progress has been made in the research on the thermal release of hydrogen from ammonia borane, there is still a lack of a mature system that meets the practical needs

Method used

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  • Organic matter and ammonia borane compounded hydrogen storage material and preparation method thereof
  • Organic matter and ammonia borane compounded hydrogen storage material and preparation method thereof
  • Organic matter and ammonia borane compounded hydrogen storage material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The preparation of the composite ammonia borane hydrogen storage material whose organic matter is phthalic anhydride, taking the preparation of PAAB20 sample as an example:

[0023] Experimental procedure: Add phthalic anhydride (PA) to purified acetonitrile at room temperature, AB is dissolved in a mixed solvent of acetonitrile and methanol (volume ratio is 5:2), and the molar ratio of PA to AB is 1:2 Join AB. Stir slowly at room temperature to a homogeneous solution, then vacuum-dry at 50°C for 12 hours to obtain a new type of organic compound ammonia borane hydrogen storage material, and the sample is labeled PAAB20.

[0024] The XRD spectrogram of PAAB20 prepared according to the above-mentioned method is as follows figure 1 shown and compared with pure AB. It can be seen from the spectrum that pure AB has obvious crystal diffraction peaks, while the new organic (phthalic anhydride) composite ammonia borane hydrogen storage material PAAB20 sample formed after addi...

Embodiment 2

[0028] The organic matter is the preparation of composite ammonia borane hydrogen storage material of polyethylene oxide, taking the preparation of PAB15 as an example:

[0029] Experimental procedure: Add polyethylene oxide (PEO) to purified acetonitrile, AB is dissolved in a mixed solvent of acetonitrile and methanol (volume ratio is 5:3), and the molar ratio of PEO to AB is 1:1.5 Join AB. Stir slowly at room temperature to a homogeneous solution, and then vacuum-dry at 25°C for 20 hours to obtain a new type of organic compound ammonia borane hydrogen storage material, and the sample is labeled PAB15.

[0030] Figure 4 Infrared (FITR) curve of the new organic compound ammonia borane hydrogen storage material PAB15 prepared according to the above method, and compared with pure AB. The results show that: compared with pure AB, the N-H and B-H stretching vibrations of the prepared PAB15 have shifted to different degrees, which indicates that the two may have certain effects. ...

Embodiment 3

[0032] The preparation of the composite ammonia borane hydrogen storage material whose organic substance is glucose, taking the preparation of GAB10 as an example:

[0033] Experimental procedure: Add glucose (Glucose) to purified acetonitrile, AB is dissolved in a mixed solvent of acetonitrile and methanol (volume ratio is 5:1), and AB is added at a molar ratio of glucose to AB of 1:1. Stir slowly at room temperature to a homogeneous solution, and then vacuum-dry at 60°C for 18 hours to obtain a new type of organic compound ammonia borane hydrogen storage material, and the sample is marked as GAB10.

[0034] Image 6 It is the temperature-programmed desorption-mass spectrometry (TPD-MS) curve of the new organic compound ammonia borane hydrogen storage material GAB10 prepared according to the above method. The results show that: the initial dehydrogenation temperature of the GAB10 sample is 58°C, the dehydrogenation reaction proceeds in one step, and the peak temperature is 7...

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Abstract

The invention relates to an organic matter and ammonia borane compounded hydrogen storage material. The hydrogen storage material is prepared by compounding the organic matter and the ammonia borane, wherein the organic matter is phthalic anhydride, polyethylene oxide, dextrose, mannitol or mannitol hexaacetic ester. The preparation method comprises the following steps: 1) adding the organic matter to the purified acetonitrile solvent, and stirring for dissolving; 2) dissolving the ammonia borane into the mixing solvent comprising acetonitrile and methanol, and stirring at the temperature of 20 to 70 DEG C to obtain a uniform solution; and 3) carrying out vacuum drying, and removing the solvent, thus obtaining the hydrogen storage material. The invention has the advantages that the ammonia borane and the organic matter are taken as raw materials to prepare the hydrogen storage material at the lower hydrogen discharge temperature; the thermal decomposition and hydrogen discharge temperature of the ammonia borane can be effectively reduced; the generation of harmful gas impurities of borazole, diborane, ammonia and the like is effectively inhibited; the hydrogen storage material hasquicker hydrogen discharge kinetics; in addition, the heat discharge amount is less in the hydrogen discharge course; and the enthalpy change of a decomposition reaction approaches to thermal neutrality; and the hydrogen storage material is beneficial to realizing the regeneration of reaction products through a solid-gas reaction or a chemical process under the relatively mild condition.

Description

technical field [0001] The invention relates to a hydrogen storage material and technology for new energy hydrogen energy, in particular to an organic compound ammonia borane hydrogen storage material and a preparation method thereof. Background technique [0002] Hydrogen is a clean and efficient energy carrier, and is considered to be an important bridge connecting fossil energy to renewable energy. In the future energy system, hydrogen energy can become a terminal energy that is equally important and complementary to electric energy, penetrates and serves all aspects of social and economic life, and thus makes important contributions to national energy security and environmental protection. The large-scale application of hydrogen energy must solve related technologies such as hydrogen production, storage, transportation and application. In the past decade, the rapid development of hydrogen fuel cells, hydrogen fuel cell vehicles and related fields has effectively promote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B6/23
Inventor 陈军王艳杨在兴潘跃德程方益
Owner NANKAI UNIV
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