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Green regulation and control method of alkali metal/alkaline earth metal cation hydrolysis medium for hydrogen production by hydrolysis of magnesium-based alloy

A technology of alkaline earth metals and magnesium-based alloys, applied in the production of hydrogen, etc., can solve problems such as difficult application, high dissociation energy barrier, and water molecules cannot continuously contact fresh alloys, so as to avoid corrosion problems, reduce costs and energy Consumption, improve the effect of hydrolysis thermodynamic behavior

Pending Publication Date: 2021-06-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of the above hydrolysis medium modification method on the one hand increases the cost of hydrolysis hydrogen production, the process is more complicated and the requirements for hydrogen production equipment are higher, so it is difficult to be practically applied
On the other hand, the above-mentioned hydrolysis medium modified ion has a passive film on the surface of magnesium-based alloy (MgO or Mg(OH) 2 ) penetration ability is weak, the hydrolysis transmission channel is blocked, and water molecules cannot continuously contact fresh alloys, resulting in the need to overcome a high dissociation energy barrier for hydrolysis hydrogen production

Method used

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  • Green regulation and control method of alkali metal/alkaline earth metal cation hydrolysis medium for hydrogen production by hydrolysis of magnesium-based alloy

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Experimental program
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Effect test

Embodiment 1

[0025] Alkali metal / alkaline earth metal cation hydrolysis medium for magnesium-based alloy hydrogen hydrogen hydrolysis medium, green hydrolyzed medium S-XM (M = NaCl, KCl, MGCL 2 CaCL 2 , NaCl + KCL, MGCL 2 + CACL 2 ), Where x concentration is 2 to 10%. In the present embodiment, the concentration of alkali metal / alkaline earth metal cation hydrolyzate modified solution is 2%.

[0026] Greening regulating method for alkali metal / alkaline earth metal cation hydrolysis medium for magnesium-based alloy hydrolyzate, including:

[0027] Step 1, weigh

[0028] The amount of the alkali metal / alkaline earth metal cation is 0.1 mol, and the formula N = m / m and C = (A / B) × 100% (n is the amount of material of the substance, M is the molecular weight of the material, and M is the mass of the material. However, C is the concentration of the solution, the mass of the solute, B is the mass of the solution) Calculate the quality of distilled water / tap water and the alkali metal / ...

Embodiment 2

[0036] Alkali metal / alkaline earth metal cation hydrolysis medium for magnesium-based alloy hydrogen hydrogen hydrolysis medium, green hydrolyzed medium S-XM (M = NaCl, KCl, MGCL 2 CaCL 2 , NaCl + KCL, MGCL 2 + CACL 2 ), Where x concentration is 2 to 10%. In the present embodiment, the concentration of alkali metal / alkaline earth metal cation hydrolyzed medium is 5%.

[0037] Greening regulating method for alkali metal / alkaline earth metal cation hydrolysis medium for magnesium-based alloy hydrolyzate, including:

[0038] Step 1, weigh

[0039] The amount of the alkali metal / alkaline earth metal cation is 0.1 mol, and the formula N = m / m and C = (A / B) × 100% (n is the amount of material of the substance, M is the molecular weight of the material, and M is the mass of the material. However, C is the concentration of the solution, the mass of the solute, B is the mass of the solution) Calculate the quality of distilled water / tap water and the alkali metal / alkaline ea...

Embodiment 3

[0047] Alkali metal / alkaline earth metal cation hydrolysis medium for magnesium-based alloy hydrogen hydrogen hydrolysis medium, green hydrolyzed medium S-XM (M = NaCl, KCl, MGCL 2 CaCL 2 , NaCl + KCL, MGCL 2 + CACL 2 ), Where x concentration is 2 to 10%. In the present embodiment, the concentration of alkali metal / alkaline earth metal cation hydrolyzate modified solution is 3.5%.

[0048] Greening regulating method for alkali metal / alkaline earth metal cation hydrolysis medium for magnesium-based alloy hydrolyzate, including:

[0049] Step 1, weigh

[0050] The amount of the alkali metal / alkaline earth metal cation is 0.1 mol, and the formula N = m / m and C = (A / B) × 100% (n is the amount of material of the substance, M is the molecular weight of the material, and M is the mass of the material. However, C is the concentration of the solution, the mass of the solute, B is the mass of the solution) Calculate the quality of distilled water / tap water and the alkali metal...

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Abstract

The invention discloses a green regulation and control method of an alkali metal / alkaline earth metal cation hydrolysis medium for hydrogen production by hydrolysis of a magnesium-based alloy. The method comprises the following steps of: 1, calculating the mass of distilled water / tap water and alkali metal / alkaline earth metal cations; 2, putting the prepared hydrolysis modification solution on a magnetic stirrer for stirring; and 3, placing the magnesium-based alloy in the fully dissolved hydrolysis medium modified solution to be subjected to a hydrolysis hydrogen production test, collecting hydrogen through a drainage method, recording the mass of the hydrogen every 5 s, and finally performing data processing. According to the method, the hydrolysis medium system is optimized on the basis of reducing the cost, conditions are provided for green hydrolysis hydrogen production of the magnesium-based alloy, and dissociation energy barriers on the surface of the magnesium-based hydrolyzed alloy are effectively reduced.

Description

Technical field [0001] The present invention relates to the field of hydrolyzed hydrogen alloy material, and more particularly to an alkali metal / alkaline earth metal cation hydrolysis medium for magnesium-based aqueous hydrolyzate. Background technique [0002] In response to the relevant policies of the national energy revolution and the transformation of the automobile industry, the development and utilization of clean, efficient, low-carbon new hydrogen energy sources "drive" future life is the research topic of China and the world. A new, convenient, large-scale on-site hydrolyzate, has received more and more attention from domestic and foreign scholars in recent years, and the method can immediately produce hydrogen by rapid hydrolysis. The on-site hydrolyzate is considered to be an effective transition of large-scale hydrogen production mode than photocatalytic, electrocatalytic hydrogen production. In some special occasions (such as fields, remote areas or mountains, et...

Claims

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Application Information

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IPC IPC(8): C01B3/08
CPCC01B3/08Y02E60/36
Inventor 侯小江杨璐胡英飞石洪昌侯凯铭何佳陈瑞倩李婧瑞锁国权冯雷叶晓慧杨艳玲
Owner SHAANXI UNIV OF SCI & TECH