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Metal ion modified nitrogen-containing organic compound for storing hydrogen

A metal ion modification, organic compound technology, applied in the field of hydrogen storage materials, can solve problems such as difficulty in hydrogen absorption, and achieve the effects of large-scale production, simple preparation process and low price

Inactive Publication Date: 2014-06-25
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such materials are difficult to absorb hydrogen, and the dehydrogenation products can only be recycled by offline regeneration.
[0009] It can be seen that although there are many hydrogen storage materials currently under research, although each has its own advantages and disadvantages, there is no material whose comprehensive performance can meet the technical requirements of the vehicle-mounted fuel cell hydrogen supply system.

Method used

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  • Metal ion modified nitrogen-containing organic compound for storing hydrogen
  • Metal ion modified nitrogen-containing organic compound for storing hydrogen
  • Metal ion modified nitrogen-containing organic compound for storing hydrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In a glove box filled with high-purity argon, measure 1 ml of ethylenediamine liquid in a ball mill jar; weigh 0.24 g of lithium hydride, press it into a disc with a diameter of about 1 cm with a manual tablet press, and place the lithium hydride disc The slices were placed on the sample holder installed on the ball mill jar, protected by argon, and mixed by ball milling on a planetary ball mill. 36 hours. Under the condition of cutting off the air, the above-mentioned ball-milled product was taken and fired at 120 degrees centigrade for 24 hours. The X-ray diffraction pattern of the product is obtained as figure 1 As shown, there are only diffraction peaks of the new substance in the solid reaction product, and the existence of the raw material is not seen, indicating that the reaction is carried out completely and there is no reactant remaining. Its temperature-programmed dehydrogenation behavior is as follows figure 2 As shown, hydrogen can be released at 180 deg...

Embodiment 2

[0057] In a glove box filled with high-purity argon, weigh 0.38 g of acetamidine hydrochloride and 0.2 g of sodium hydride in a ball mill jar, use argon protection, and ball mill and mix on a planetary ball mill. The ball-to-material ratio is 100:1 , the rotation speed is 200 cycles / min, the ball milling temperature is room temperature, and the ball milling time is 6 hours. Under the condition of being isolated from air, the above-mentioned ball milling product was collected. The X-ray diffraction pattern of the product is obtained as Figure 4 As shown, there are only diffraction peaks of sodium chloride and new substances in the solid reaction product, and the existence of raw materials cannot be seen, indicating that the reaction is carried out completely, and there is no reactant residue. Its temperature-programmed dehydrogenation behavior is as follows Figure 5 As shown, hydrogen can be released at 196 degrees Celsius.

Embodiment 3

[0059] In a glove box filled with high-purity argon, weigh 0.36 g of acetamide and 0.15 g of sodium hydride in a ball mill jar, and use argon protection to ball mill and mix them on a planetary ball mill with a ball-to-material ratio of 100:1 and a rotation speed of 200 cycles / minute, the ball milling temperature is room temperature, and the ball milling time is 4 hours. Under the condition of being isolated from air, the above-mentioned ball milling product was collected. The X-ray diffraction pattern of the product is obtained as Figure 6 As shown, there are only diffraction peaks of sodium chloride and new substances in the solid reaction product, and the existence of raw materials cannot be seen, indicating that the reaction is carried out completely, and there is no reactant residue. Its temperature-programmed dehydrogenation behavior is as follows Figure 7 Shown, hydrogen begins to be released around 200 degrees Celsius.

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Abstract

The invention relates to a novel hydrogen storage material, namely a metal ion modified nitrogen-containing organic compound. The organic compound is in an ionic solid crystal form at a room temperature, and will release hydrogen gas when heated to a low temperature. The organic compound is prepared by subjecting a series of nitrogen-containing compounds such as amine, alcohol amine, amino acid, amidine, amide, hydrazide, carbamide, nitrogen-containing heterocycle, and the like, to carry out reactions with metals or metallic compounds such as metal hydrides, metal composite hydrides, organic metal compounds, inorganic metal salts, and the like, according to a certain ratio so as to obtain products substituted by corresponding metal ions. The ionic product with a certain structure can release hydrogen gas at a low temperature, and thus is a novel hydrogen storage material with a good application prospect.

Description

technical field [0001] The invention relates to a hydrogen storage material, which belongs to the field of material technology preparation, in particular to a metal ion-modified nitrogen-containing organic compound hydrogen storage material and a preparation method thereof. Background technique [0002] Energy is the material basis for human survival. At present, its main body is mainly non-renewable fossil resources, including coal, oil, and natural gas. However, the use of fossil resources has brought serious energy shortages and environmental pollution to all human beings. [Jiang Zemin. Thoughts on China’s Energy Issues. Journal of Shanghai Jiaotong University, 2008, 42:345-359.] Hydrogen is considered to be an ideal secondary energy source to replace fossil resources due to its rich resources, high combustion efficiency, and no pollution. It has become a key direction of global research. [Schlapbach L, Zuttel A. Hydrogen-storage materials for mobile applications. Natur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02
Inventor 陈萍陈君儿熊智涛吴国涛何腾
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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