Liquid hydrogen storage material and preparation method thereof
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A technology for liquid hydrogen storage and hydrogen storage materials, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of slow heating of hydrogen storage materials and difficulty in dehydrogenation, and achieve the effect of increasing the release rate
Inactive Publication Date: 2019-02-19
FAW JIEFANG AUTOMOTIVE CO
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[0006] The purpose of the present invention is to address the shortcomings of the above-mentioned prior art, provide a liquid hydrogen storage material, and also provide a preparation method for the above-mentioned liquid organic hydrogen storage material, so as to solve the problem of dehydrogenation easily caused by the high melting point of the hydrogen storage material in the prior art Difficulty and slow temperature rise of hydrogen storage materials during dehydrogenation
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Embodiment 1
[0022] A liquid hydrogen storage material and a preparation method thereof, comprising the steps of:
[0023] A. Put 90g of N-ethylcarbazole into a three-neck flask and heat it to 80°C. After the N-ethylcarbazole is completely melted, put a magnet into it and stir vigorously.
[0024] B. Slowly add 10 g of dibenzyltoluene to the molten N-ethylcarbazole in step 1. After the addition is completed, continue stirring for 3 h until a uniform mixture is formed.
[0025] C. Stop heating, cool the mixture in step 2 to room temperature, and then put the mixed material into a grinding bottle to obtain the hydrogen storage material.
Embodiment 2
[0027] A liquid hydrogen storage material and a preparation method thereof, comprising the steps of:
[0028] A. Put 80g of N-ethylcarbazole into a three-neck flask and heat it to 90°C. After the N-ethylcarbazole is completely melted, put a magnet into it and stir vigorously.
[0029] B. Slowly add 20 g of dibenzyltoluene to the molten N-ethylcarbazole in step 1. After the addition is completed, continue stirring for 3 h until a uniform mixture is formed.
[0030] C. Stop heating, cool the mixture in step 2 to room temperature, and then put the mixed material into a grinding bottle to obtain the hydrogen storage material.
Embodiment 3
[0032] A liquid hydrogen storage material and a preparation method thereof, comprising the steps of:
[0033] A. Put 70g of N-ethylcarbazole into a three-necked bottle and heat it to 90°C. After the N-ethylcarbazole is completely melted, put a magnet into it and stir vigorously.
[0034] B. Slowly add 30 g of dibenzyltoluene to the molten N-ethylcarbazole in step 1. After the addition is completed, continue stirring for 4 h until a uniform mixture is formed.
[0035] C. Stop heating, cool the mixture in step 2 to room temperature, and then put the mixed material into a grinding bottle to obtain the hydrogen storage material.
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Abstract
The invention relates to a liquid hydrogen storage material and a preparation method thereof. The liquid hydrogen storage material comprises a carbazole type hydrogen storage component and an additivewith a low melting point and a high heat transfer coefficient; the carbazole type hydrogen storage component is at least one of carbazole, N-methyl carbazole, N-ethyl carbazole, N-n-propyl carbazole,N-isopropyl carbazole or N-n-butyl carbazole; the heat conduction additive component with a low melting point is at least one of benzyltoluene or hydrogenated terphenyl. The liquid hydrogen storage material is a mixture formed by mixing the carbazole type hydrogen storage material with a high melting point with the heat conduction additive with a low melting point and has an eutectic point whichis at least lower than the melting point of one component, and the melting point of the entire hydrogen storage material can drop to 0 DEG C or below. At the same time, the heat conduction additive with a low melting point has a high heat transfer coefficient, and the heat conductivity coefficient of the mixture formed after the additive is mixed with the carbazole type hydrogen storage material can be higher than that of the carbazole type hydrogen storage material; the whole hydrogen storage material can quickly reach the dehydrogenation temperature during dehydrogenation, so that the release rate of hydrogen is increased.
Description
technical field [0001] The invention belongs to the technical field of hydrogen storage, and in particular relates to a liquid hydrogen storage material and a preparation method thereof. Background technique [0002] Among many new energy sources, hydrogen energy is one of the future energy sources with great development potential. Hydrogen energy is a clean and renewable energy that can be stored and transported at the same time. At present, it is an ideal low-pollution or even zero-pollution vehicle energy. In the long run, its development may bring about major changes in the energy structure. However, during practical application, its storage and transportation are critical. It is even more critical to find efficient, low-cost and large-scale hydrogen storage methods. [0003] The existing hydrogen storage methods generally include the following methods, high-pressure compression hydrogen storage, low-temperature liquid hydrogen storage, metal hydride hydrogen storage...
Claims
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