Method for producing hydrogen from water with chloromagnesium plasma produced from aqueous magnesium chloride solution using hydroxycarboxylic acid such as citric acid or gluconic acid in aqueous magnesium chloride solution so as not to crystallize magnesium hydride and magnesium hydroxide crystals
By using hydroxycarboxylic acids to dissolve magnesium hydroxide, the method prevents crystallization and maintains a stable dispersion of chloromagnesium plasma particles, ensuring efficient hydrogen production without waste, addressing the inefficiencies of previous methods.
Patent Information
- Application Number
- JP2024137942
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2026-02-10
AI Technical Summary
Magnesium hydroxide crystallization coats and solidifies the surface of chloromagnesium plasma particles, reducing hydrogen generation and complicating cleanup, as seen in existing hydrogen production methods using chloromagnesium plasma.
Incorporating hydroxycarboxylic acids like citric acid or gluconic acid in a molar excess to the magnesium chloride solution dissolves magnesium hydroxide, preventing crystallization and enabling efficient hydrogen production through a dispersion of chloromagnesium plasma particles.
This approach ensures continuous hydrogen production without industrial waste, enhancing efficiency and simplifying the process by maintaining a stable dispersion of chloromagnesium plasma particles.
Smart Images
Figure 2026021217000001
Abstract
Description
[Technical Field]
[0001] This invention relates to a method for obtaining hydrogen from water by using chloromagnesium plasma prepared according to the following formula (1): TIFF2026021217000001.tif15136 [Background technology]
[0002] The most promising method for obtaining hydrogen from water is to use chloromagnesium plasma, which does not emit carbon dioxide during the manufacturing process and is inexpensive. [Prior art documents]
[0003] Sakurako Doi Patent Application No. 2023-126600 Summary of the Invention
[0004] Patent application 2023-126600 is an invention that uses chloromagnesium plasma produced from magnesium hydride and magnesium chloride solution to produce 74,000 tons of hydrogen per day. However, magnesium hydroxide, which is extremely insoluble in water, crystallizes and coats and solidifies the surface of chloromagnesium plasma particles. Not only does this result in a cement-like solid mass that reduces hydrogen generation, but it is also impractical when considering the cleanup of this solid mass. Therefore, magnesium hydroxide is made water-soluble to create a dispersion of only chloromagnesium plasma particles, which allows for active hydrogen production. Means to solve the problem
[0005] The magnesium chloride aqueous solution, which is sprayed, dropped or poured onto magnesium hydride, contains 1.2 times or more molar amounts of hydroxycarboxylic acid such as citric acid or gluconic acid relative to the amount of magnesium hydroxide produced in the aqueous solution, and reacts with the magnesium hydroxide to dissolve it in the aqueous solution, preventing the magnesium hydroxide from crystallizing.
[0006] Since hydrogen is continuously produced using only a dispersion of magnesium chloroplasma particles, hydrogen production is efficient and no industrial waste such as magnesium hydroxide is produced. Furthermore, if an aqueous magnesium chloride solution using hydroxycarboxylic acids such as citric acid or gluconic acid in an amount 1.2 times or more by mole relative to the magnesium hydroxide produced in the magnesium chloride solution that is sprayed, dripped, or injected into the magnesium hydride is stored in a reaction tank, hydrogen can be produced simply by spraying magnesium hydride particles. In other words, it has enormous potential for increasing hydrogen production.
Claims
1. A method for producing hydrogen from water using chloromagnesium plasma produced from an aqueous magnesium chloride solution to which magnesium hydride and hydroxycarboxylic acids such as citric acid and gluconic acid are added in an amount 1.2 times or more by mole relative to magnesium hydroxide.
2. The method of producing hydrogen using chloromagnesium plasma is an exothermic reaction, so there is a risk of a steam explosion, and the hydrogen generated will cause the dispersion of chloromagnesium plasma particles to expand and overflow from the production equipment. Therefore, there is a risk of ignition and explosion. Hydrogen production is dangerous unless it is confirmed that these risks have been avoided. In consideration of this risk, a rectangular parallelepiped production equipment made of concrete, 200 m high, is set up on a 100 m square base. The reaction tank is 10 m from the base and is covered with magnesium hydride particles. At a position 100 m away, a device is provided for spraying, dropping or injecting an aqueous magnesium chloride solution to be added to the magnesium hydride, i.e., an aqueous magnesium chloride solution containing 1.2 or more times the molar ratio of magnesium hydroxide that produces hydroxycarboxylic acids such as citric acid or gluconic acid. Furthermore, a hydrogen liquefaction unit is provided for purifying hydrogen from the resulting mixed gas of hydrogen and oxygen.