A hydrogen sustained-release agent containing ammonia borane and its use

Abstract

The present invention belongs to the technical field of hydrogen production, and particularly relates to a hydrogen slow-release agent containing ammonia borane and its use. The hydrogen slow-release agent comprises: ammonia borane, alkaline earth metal salt, and desiccant. The present invention also discloses the use of the above hydrogen slow-release agent in diapers and daily health care. The present invention innovatively utilizes for the first time the property of ammonia borane that slowly hydrolyzes and releases hydrogen when it comes into contact with water, and obtains a hydrogen slow-release agent that can slowly release hydrogen by adding several specific components. This product is a green and pollution-free product that can quickly generate hydrogen-rich gas, has high safety, relatively low cost, and is very easy to apply to industrial expansion production, especially meeting the needs of contemporary people to use hydrogen for daily health care.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrogen production, and particularly relates to a hydrogen slow-release agent containing ammonia borane and application thereof. Background Art

[0002] Hydrogen, as a reducing inert gas, is almost ubiquitous in nature. Existing medical science shows that hydrogen can selectively remove hydroxyl free radicals and has a strong antioxidant effect without affecting the functions of other active oxygen species. It can improve energy metabolism, so it has a good improvement and control effect on various lesions in the body. In Japan, hydrogen has been added as an additive to food, beauty masks, etc., which can enhance immunity, remove spots, lose weight, improve endocrine, etc. Hydrogen has no toxic side effects on the human body and is widely suitable for all kinds of people. Therefore, hydrogen-containing substances that can slowly release hydrogen have a large market development space.

[0003] It would be of great value if a hydrogen slow-release formulation could be provided that is stable, safe, and non-toxic for a long time and can slowly release reducing hydrogen when needed. Summary of the invention

[0004] The present invention uses ammonia borane, a substance with a high hydrogen storage value (up to 19.6wt% hydrogen storage capacity), for the first time to prepare a hydrogen slow-release agent that can slowly release hydrogen when used. The theoretical basis of the present invention is that ammonia borane is a white solid at room temperature and pressure, and its melting point is 104°C, which is relatively stable and easy to store and transport. Ammonia borane will slowly undergo a hydrolysis reaction when dissolved in water, slowly releasing hydrogen, so that a certain hydrogen concentration is always maintained in the solution.

[0005] The molecular formula of ammonia borane is NH3·BH3, also known as ammonia borane.

[0006] The first aspect of the present invention provides a hydrogen slow-release agent containing ammonia borane, wherein the hydrogen slow-release agent comprises: ammonia borane, an alkaline earth metal salt, and a desiccant.

[0007] Preferably, the desiccant is selected from at least one of calcium chloride, silica gel, molecular sieve, mineral desiccant, or fiber desiccant. The desiccant can keep the hydrogen slow-release agent in a dry state to prevent the release of hydrogen due to moisture.

[0008] Preferably, the hydrogen slow-release agent further comprises an adsorbent.

[0009] Preferably, the amount of ammonia borane added is 1%-35% of the mass of the hydrogen sustained-release agent.

[0010] Preferably, the adsorbent is selected from one or more of attapulgite, kaolin, montmorillonite, talc, or sericite, all of which are natural minerals. The adsorbent may also be other adsorbent substances, such as activated carbon.

[0011] The adsorbent has the following functions: it has excellent adsorption capacity and plays a certain adsorption role on substances such as odor and products after hydrolysis of ammonia borane; it can also store water to ensure the continuous reaction of the hydrolysis process of ammonia borane, so that the hydrogen slow-release agent is always in a reducing hydrogen-rich environment within a certain range.

[0012] Preferably, the alkaline earth metal salt is selected from at least one of a calcium salt or a magnesium salt, and the solubility of the calcium salt or the magnesium salt in water at 25 degrees Celsius is not less than 10g / 100g water.

[0013] Preferably, the alkaline earth metal salt is selected from at least one of calcium chloride, calcium nitrate, calcium bicarbonate, calcium dihydrogen phosphate, calcium acetate, calcium formate, magnesium chloride, magnesium nitrate, magnesium sulfate, magnesium acetate, magnesium formate, magnesium bicarbonate, or magnesium dihydrogen phosphate.

[0014] Preferably, the molar ratio of the ammonia borane to the alkaline earth metal salt is less than 2.

[0015] The metaborate ions after hydrolysis of ammonia borane are harmful to the human body. Therefore, adding alkaline earth metal salts such as calcium chloride and magnesium chloride to precipitate the metaborate can remove the harmful effects of the metaborate ions in the solution.

[0016] Preferably, the hydrogen sustained-release agent is in the form of powder, sphere, block, or tablet.

[0017] Preferably, when the hydrogen sustained-release agent is in powder form, the particle size is no greater than 100 microns.

[0018] Preferably, when the hydrogen slow-release agent is in the shape of a sphere, block, or sheet, the interior is a mixture of the ammonia borane and the alkaline earth metal salt, and the outer wrapping layer is a mixture of an adsorbent and a desiccant.

[0019] Preferably, in the hydrogen sustained-release agent, the ammonia borane is 0.1-6 parts, the adsorbent is 80-95 parts, the desiccant is 6-20 parts, and the molar ratio of the ammonia borane to the alkaline earth metal salt is less than 2, by weight.

[0020] The second aspect of the present invention provides use of the hydrogen sustained-release agent described in the first aspect in diapers.

[0021] If diapers are not changed in time during use, bacteria will easily grow in them. If there is a wound in the area covered by the diaper, the infection may be aggravated. When this product is added to diapers, the diapers will be soaked during use, and the hydrogen slow-release agent inside can slowly release hydrogen, making the area covered by the diaper in a reducing hydrogen-rich environment, inhibiting the growth of aerobic bacteria.

[0022] The third aspect of the present invention provides use of the hydrogen sustained-release agent described in the first aspect for daily health care.

[0023] The daily health care means that the hydrogen sustained-release agent can be added to daily necessities or daily chemicals for use, and the daily necessities or daily chemicals include but are not limited to bathing products such as shower gel and facial cleanser, cosmetics, skin care products, etc.

[0024] The hydrogen sustained-release agent can also be added to daily chemical products such as facial masks. The hydrogen sustained-release agent is added when the facial mask is used, and the added amount is 2wt% of the facial mask base liquid. This added amount is more reasonable and will maintain the hydrogen concentration for a longer time.

[0025] When used in daily chemical products such as facial masks, a mud mask can be prepared by adding one or more of natural mineral soils such as attapulgite, montmorillonite, kaolin, etc., and adding glycerin, fish oil, skin care powder, etc. Mud masks have the function of retaining moisture in the skin, and can keep hydrogen on the surface of the skin for a longer time, thereby improving the efficacy of the product.

[0026] When the hydrogen slow-release agent is used in bathing, the hydrogen slow-release agent can be pressed into a ball shape, a sheet shape or a powder wrapped in a powder bag, and soaked in water when used.

[0027] Preferably, when the hydrogen sustained-release agent is a powder wrapped in a powder bag, the powder bag can wrap the generated insoluble precipitate such as alkaline earth metal metaborate in the powder bag and is air-permeable and water-permeable.

[0028] Preferably, the powder bag is wrapped in conventional filter paper.

[0029] The hydrogen sustained-release agent needs to be sterilized by ultraviolet light and stored in a dry and ventilated place.

[0030] The above usage schemes can be freely combined without contradiction.

[0031] The present invention has the following beneficial effects:

[0032] (1) Currently, people mostly use ammonia borane in the industrial field as a high-energy rocket fuel, but no one uses it in the biochemical field. The present invention innovatively utilizes the property of ammonia borane that it can slowly hydrolyze and release hydrogen when it comes into contact with water for the first time. By adding several specific components, a hydrogen slow-release agent that can slowly release hydrogen is obtained. It is a green and pollution-free product rich in nano hydrogen, has high safety, relatively low cost, and is easy to produce industrially, meeting the needs of contemporary people to use hydrogen-rich products for daily health care.

[0033] (2) High compatibility. The main additives in the formula, such as alkaline earth metal salts, adsorbent clay, desiccant, etc., are all commonly used reagents in daily chemical products. There is no problem of poor compatibility and it can adapt to different cosmetic formulas including mask base liquid.

[0034] (3) Wide range of uses. The uses of the hydrogen sustained-release agent of the present invention include but are not limited to its application in bathing and daily chemical products. When the above hydrogen sustained-release agent is used in diapers, the area within the diaper package will always be in a hydrogen-rich reducing environment, which is not easy to breed bacteria. When the hydrogen sustained-release agent is used in bathing and daily chemical products, the skin will be in a hydrogen-rich state, and the released hydrogen can reduce the highly reactive active oxygen free radicals on the surface of the skin, thereby preventing skin oxidative damage and local inflammatory damage.

[0035] (4) The hydrogen slow-release agent of the present invention slowly releases hydrogen for up to 36 hours when used, and keeps the hydrogen concentration in the solution always greater than 1400 ppb. Therefore, the hydrogen slow-release agent is always in a state of releasing hydrogen in the air and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The diaper of Example 1 is soaked in water for 0.5-36 hours, and the hydrogen concentration in the squeezed solution is changed.

[0037] Figure 2 This is a curve showing the change in hydrogen concentration of the solution of the hydrogen sustained-release agent powder package of Example 2 when placed in water for 0.5-36 hours. DETAILED DESCRIPTION

[0038] The content of the present invention is further explained below through specific implementation examples.

[0039] The following experiments were all conducted at room temperature of 25 degrees Celsius. The diapers used in the experiments were purchased from the market.

[0040] Example 1

[0041] (1) Taking the preparation of 100 g of hydrogen sustained-release agent powder as an example, 2 g of ammonia borane, 69 g of attapulgite, 8 g of calcium chloride, 8 g of magnesium chloride, and 10 g of silica gel are taken to obtain a mixture.

[0042] (2) After the mixture of step (1) is evenly mixed and ball-milled, 10 g of the ball-milled powder is put into a filter paper powder bag, and sterilized with ultraviolet light for 10 minutes to obtain a hydrogen sustained-release agent powder bag.

[0043] (3) Place the powder bag obtained in step (2) in a diaper.

[0044] Prepare 7 diapers containing the same hydrogen sustained-release powder package as above, pour 0.5L of water on each diaper to simulate the state of people using diapers, wait for 0.5, 3, 6, 9, 18, 24, and 36 hours respectively, squeeze out the solution in the corresponding diaper, and test the hydrogen concentration in the solution with a hydrogen concentration test pen.

[0045] Figure 1 This is a curve showing the change of hydrogen concentration in the squeezed solution when the diaper in Example 1 is soaked in water for 0.5-36 hours.

[0046] Depend on Figure 1 It can be seen that the hydrogen concentration in the solution is always greater than 1400ppb, and since the temperature of the use environment is about human body temperature 37 degrees Celsius, the hydrogen sustained-release agent will always be in a state of releasing hydrogen in the air. In addition, the human body posture will constantly change during use, which will also accelerate the rate of hydrogen release of the hydrogen sustained-release agent.

[0047] Example 2

[0048] Refer to the method in Example 1, the only difference is: 5g of the ball-milled powder obtained in step (2) is put into a filter paper powder bag, and sterilized with ultraviolet light for 10 minutes to obtain a hydrogen sustained-release agent powder bag. Then the powder bag is placed in 20ml of water to simulate the environment in which it is matched with the base liquid of the cosmetic mask. The solution containing the hydrogen sustained-release agent powder bag is tested with a hydrogen measuring pen.

[0049] Figure 2 This is the curve of the change of hydrogen concentration of the solution when the hydrogen sustained-release agent powder package of Example 2 is placed in water for 0.5-36 hours.

[0050] Depend on Figure 2 It can be seen that the hydrogen concentration in the solution is always greater than 1400 ppb. Therefore, the hydrogen sustained-release agent is always in a state of releasing hydrogen.

[0051] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A hydrogen sustained-release agent containing ammonia borane, characterized in that: The hydrogen slow-release agent comprises: ammonia borane, alkaline earth metal salt, and desiccant; The hydrogen slow-release agent also includes an adsorbent; The amount of ammonia borane added is 1%-35% of the mass of the hydrogen sustained-release agent; The alkaline earth metal salt is selected from at least one of calcium nitrate, calcium bicarbonate, calcium dihydrogen phosphate, calcium acetate, calcium formate, magnesium nitrate, magnesium acetate, magnesium formate, magnesium bicarbonate or magnesium dihydrogen phosphate; The molar ratio of the ammonia borane to the alkaline earth metal salt is less than 2; The adsorbent is selected from attapulgite; When the hydrogen slow-release agent is in the shape of a sphere, block or sheet, the interior is a mixture of the ammonia borane and the alkaline earth metal salt, and the outer wrapping layer is a mixture of an adsorbent and a desiccant; In the hydrogen slow-release agent, the ammonia borane is 0.1-6 parts by weight, the adsorbent is 80-95 parts by weight, and the desiccant is 6-20 parts by weight.

2. Use of the hydrogen sustained-release agent according to claim 1 in diapers.

3. Use of the hydrogen sustained-release agent according to claim 1 for daily health care for non-therapeutic purposes.

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