A method for safely increasing the production of chloromagnesium plasma produced from a magnesium chloride aqueous solution by using a hydroxycarboxylic acid such as citric acid or gluconic acid in the magnesium chloride aqueous solution to prevent magnesium hydroxide from crystallizing during the reaction between magnesium hydride and magnesium chloride aqueous solution.
Hydroxycarboxylic acids like citric or gluconic acid dissolve magnesium hydroxide in the magnesium chloride solution, addressing crystallization and bubbling issues in chloromagnesium plasma hydrogen production, ensuring stable and efficient hydrogen generation.
Patent Information
- Application Number
- JP2025036878
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-08-26
AI Technical Summary
Existing hydrogen production methods using chloromagnesium plasma face issues with magnesium hydroxide crystallization, which coats the plasma particles, reducing hydrogen generation and complicating disposal, while rapid bubbling during hydrogen generation poses safety and operational challenges.
Using a hydroxycarboxylic acid like citric acid or gluconic acid in a molar ratio of 1.2 times or more with respect to magnesium hydroxide to dissolve it in an aqueous magnesium chloride solution, preventing crystallization and controlling bubbling during hydrogen production.
Prevents magnesium hydroxide crystallization and stabilizes hydrogen generation, enhancing production efficiency and safety by suppressing bubbling, allowing continuous operation.
Smart Images
Figure 2026137011000001
Abstract
Description
Technical Field
[0001] This invention relates to a method for obtaining hydrogen from water by using a chloromagnesium plasma prepared by the following formula (1). TIFF2026137011000001.tif45130The method for obtaining hydrogen from water in this patent involves the mixture of the above (1), (2), and (3). The key point of this patent is how to suppress the reaction of (3) and prioritize the reactions of (1) and (2).
Background Art
[0002] Among the methods for obtaining hydrogen from water, the method using chloromagnesium plasma is promising because it does not emit carbon dioxide gas in the manufacturing process and is inexpensive.
Prior Art Documents
[0003] Sakiko Doi, Japanese Patent Application No. 2023-126600 Tadashi Doi, Japanese Patent Application No. 2024-137942
Summary of the Invention
[0004] Japanese Patent Application No. 2023-126600 is an invention for producing 74,000 tons of hydrogen per day using a chloromagnesium plasma produced from magnesium hydride and a magnesium chloride solution. However, magnesium hydroxide, which is extremely poorly soluble in water, crystallizes and coats and solidifies the surface of the chloromagnesium plasma particles. It becomes like a cement solid, not only reducing hydrogen generation but also having no practicality considering the disposal of this solid. Therefore, magnesium hydroxide is dissolved in water to form a dispersion of only chloromagnesium plasma particles for active hydrogen production. Means for Solving the Problems
[0005] An aqueous magnesium chloride solution using a hydroxycarboxylic acid such as citric acid or gluconic acid at 1.2 molar ratio times or more of magnesium hydroxide to magnesium hydride reacts with magnesium hydroxide and dissolves it in the aqueous solution, so magnesium hydroxide does not crystallize as crystals. Effects of the Invention
[0006] The conventional hydrogen production method described in Japanese Patent Application No. 2024-137942 involves storing an aqueous magnesium chloride solution containing a hydroxycarboxylic acid such as citric acid or gluconic acid at a molar ratio of 1.2 times or more of magnesium hydroxide in a storage tank. By dropping, adding, or pouring this solution onto magnesium hydride particles, it is possible to produce 74,000 tons of hydrogen per day. However, there is a rapid bubbling that occurs during hydrogen generation. Controlling this and producing hydrogen requires prolonged concentration to prevent the bubbles from overflowing from the equipment. Solving this drawback of requiring prolonged concentration is important from a work environment perspective.
Claims
[Claim 1] A method for safely increasing the production of chloromagnesium plasma produced from a magnesium chloride aqueous solution by using a hydroxycarboxylic acid such as citric acid or gluconic acid in the magnesium chloride aqueous solution to prevent magnesium hydroxide from crystallizing during the reaction between magnesium hydride and magnesium chloride aqueous solution.