CN115652148A - Aluminum alloy containing accordion-pleated nanosheet layer precipitated phase and used for hydrogen production through hydrolysis, and preparation method and application thereof - Google Patents
Aluminum alloy containing accordion-pleated nanosheet layer precipitated phase and used for hydrogen production through hydrolysis, and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a hydrolysis hydrogen production aluminum alloy containing accordion-pleated nano-sheet precipitated phase and a preparation method and application thereof, wherein the aluminum alloy comprises the components of AlBi x RE y Mg z1 Zn z2 RE is any one of rare earth La, ce and Y, and is 0 by the total weight percentage of the raw materials.X is more than 1 percent and less than 10 percent, y is more than 0.1 percent and less than 10 percent, z1 is more than 0.1 percent and less than 10 percent, z2 is more than 0.1 percent and less than 10 percent, and the rest is Al. The aluminum alloy does not contain precious rare elements, is formed by adopting a smelting, modification and casting method, and is prepared into the aluminum alloy with the microstructure characteristic of an accordion-shaped nanosheet layer, and the alloy phases comprise a matrix alpha-Al solid solution, a second phase in which the nanosheet layer is connected and distributed in a network shape and a heavy metal element-rich phase which is dispersed and precipitated in a sharp edge shape. The invention can realize high-efficiency controllable hydrolysis hydrogen production by changing the types and the proportions of the alloy elements, and has remarkable technical effect. The invention has no inflammable and explosive problems, is easy to store and transport and is easy for large-scale industrial production.
Description
Technical Field
The invention relates to a hydrolysis hydrogen production aluminum alloy containing an accordion-folded nanosheet layer precipitated phase and a preparation method and application thereof.
Background
The hydrogen energy is used as a clean and efficient secondary energy, has the advantages of rich resources, high combustion heat value, cleanness, no pollution, various utilization forms, capability of being used as an energy storage medium and the like, and becomes a strategic choice for energy transformation in many countries. The development and utilization of hydrogen energy mainly comprise three parts of hydrogen production, hydrogen storage and hydrogen utilization, the hydrogen production link is the starting point of a hydrogen industry chain, the current large-scale hydrogen production technology mainly comprises hydrogen production by fossil energy, hydrogen production by industrial byproducts, hydrogen production by water electrolysis and the like, and the prepared hydrogen can be used only when being transported to a destination. And hydrogen is easy to leak in the transportation process, and is easy to cause safety problems such as explosion and the like. The hydrogen production by metal hydrolysis is a green hydrogen production technology for portable on-site real-time hydrogen production, has the advantages of low cost, rapid hydrogen production, high hydrogen production amount and easy acquisition, and mainly comprises alkali metal, magnesium-based and aluminum-based hydrogen production materials and the like; among them, aluminum has attracted much attention because of its high energy density, wide source and low cost. However, aluminum is easily oxidized to form a dense aluminum oxide film on the surface, and the continuous progress of aluminum hydrolysis reaction is prevented, so that how to destroy the aluminum oxide film on the aluminum surface to continuously hydrolyze aluminum to produce hydrogen is the key of the application of the technology. At present, the solution to the problem is mainly to prepare an aluminum-based powder composite material by a ball milling process, and alloying elements and aluminum powder are repeatedly welded and broken in the ball milling process to generate a fresh interface to be compounded together, so that the activity of hydrogen production by aluminum alloy hydrolysis is improved; however, with the progress of the hydrolysis reaction, the generated continuous and compact aluminum oxide layer is coated on the surface of the powder material, so that the contact of water molecules and the unreacted fresh aluminum alloy surface is prevented, the mass transfer distance is prolonged, and the hydrogen production rate is reduced; in addition, the aluminum metal has high soft ductility, the hydrolysis performance of the aluminum metal is difficult to improve by a ball milling composite method, the powder raw material needs to be prepared in advance during ball milling powder preparation, the production chain is long and the process is complex, and the powder material has large specific surface area, high activity, high flammability and explosiveness and is not beneficial to storage, transportation and use, so that the more concise, efficient and safe aluminum alloy hydrogen production material and the optimization of the process route are researched, and the method has important research and practical significance.
Chinese patent CN101289163A discloses an aluminum alloy for hydrogen production by hydrolysis and a preparation method thereof, wherein the alloy consists of 8-50wt% of bismuth, 0-5wt% of low-melting-point metal, 1-40wt% of water-soluble compound and the balance of aluminum; and (3) putting the metal and the water-soluble powder into a ball milling tank, and ball milling for 2-60 hours under the protection of argon at the ball milling rotating speed of more than 300-450r/m to finally prepare the hydrolysis hydrogen production aluminum alloy powder. The problem that this patent exists is that, the raw materials that it adopted are powder, and the cost is higher, and the hydrolysis hydrogen production aluminum alloy powder that finally makes has flammable and explosive risk, stores and transports the difficulty, and process control is complicated in practical application, is difficult to be applicable to large-scale industrial production.
Chinese patent CN 110551921A discloses a preparation method of Al-Ga-In-Sn-Bi alloy for hydrogen production by hydrolysis, wherein the alloy comprises 2-3 wt% of gallium, 6-10 wt% of indium, tin and bismuth and the balance of aluminum, and the preparation method comprises the steps of putting metal into a smelting furnace protected by inert gas, heating, melting, keeping the temperature for 1-2 h, stirring, mixing, pouring into a mold, and naturally cooling In the air to obtain the Al-Ga-In-Sn-Bi alloy. The problem that gallium, indium and tin which form the alloy are all precious metals is high in cost for hydrolysis hydrogen production, and the practical application range of the patent is limited.
Disclosure of Invention
The invention aims to provide a hydrolysis hydrogen production aluminum alloy containing accordion-pleated nanosheet layer precipitated phase and a preparation method thereof.
In order to achieve the aim, the aluminum alloy comprises the components of AlBi x RE y Mg z1 Zn z2 RE is any one of rare earth La, ce and Y, x is more than 0.1 percent and less than 10 percent, Y is more than 0.1 percent and less than 10 percent, z1 is more than 0.1 percent and less than 10 percent, z2 is more than 0.1 percent and less than 10 percent, and the rest is Al.
The aluminum alloy has an accordion-shaped nanosheet layer microstructure, and the alloy phase comprises a matrix alpha-Al solid solution, a second phase in network distribution formed by the connection of the nanosheet layers and a heavy metal element-rich phase dispersed and precipitated in a sharp edge shape. The microstructure of the accordion-shaped nanosheet layer refers to the presence of a large amount of Al in the aluminum alloy 4 RE、Al 3 Mg 2 The nano-sheet layer is separated out along the grain boundary and takes the shape of accordion folds.
The preparation method comprises the following steps:
(1) Preparing materials: selecting massive metal aluminum, bismuth, rare earth, magnesium and zinc ingots, and mixing according to the proportion of 0.1-10% of bismuth, 0.1-10% of rare earth metal RE, 0.1-10% of magnesium, 0.1-10% of zinc and the balance of aluminum;
(2) Melting: melting the aluminum block by using a crucible electric melting furnace, heating to 730-780 ℃, adding the bismuth, the rare earth and the zinc ingot in batches, fully stirring after melting, and slagging to obtain a melt I; cooling to 690-710 ℃, adding the magnesium ingot, and melting to obtain a melt II;
(3) Refining: heating the melt II to 720-750 ℃, uniformly throwing a refining agent into the melt, and fully and uniformly stirring to obtain a melt III; then introducing argon gas, and refining for 10-30 min to obtain a melt IV;
(4) Modification: adding Al-Ti-B alloy into the melt IV to perform modification treatment for 0.5-1.5 h to obtain a melt V; standing for 1.0-3.0 h to obtain a melt VI;
(5) Pouring: and after the temperature of the melt VI is reduced to 690-720 ℃, deslagging, and cleaning, pouring into a metal mold for molding to obtain the product block aluminum alloy.
In the step (3), the addition amount of the refining agent is 0.5-1.5% of the weight of the melt.
The hydrolysis hydrogen production aluminum alloy containing the accordion-folded nanosheet layer precipitated phase is used for hydrolysis hydrogen production.
The invention has the following beneficial effects:
the invention constructs the AlBi with the accordion-shaped and sharp-edge-shaped microstructure by preferably selecting and adjusting the types and the contents of alloying elements x RE y Mg z1 Zn z2 Bulk aluminum alloys induce rapid onset of hydrogen evolution reactions. Al (aluminum) 4 RE、Al 3 Mg 2 The specific accordion-shaped microstructure constructed by the second phase provides a convenient channel for the continuous generation of hydrogen evolution reaction, so that the hydrolysis product Al (OH) 3 The aluminum alloy is easier to strip, so that fresh alloy is exposed, the hydrogen evolution reaction is promoted to continuously occur, and the hydrogen production yield by hydrolysis of the aluminum alloy is improved. The brittle and hard elemental metal bismuth is precipitated in the aluminum alloy in a sharp edge shape to cut an aluminum alloy matrix, so that more microscopic crystal defects and macroscopic defects such as holes, cracks, rough surfaces and the like are caused, the aluminum alloy is in a high-activity state due to the defects, the aluminum alloy is activated to hydrolyze to produce hydrogen, and meanwhile, the bismuth can cause the electric potential of an aluminum alloy electrode to generate large negative shift, so that the hydrolysis of aluminum can be promoted to a certain extent. The introduction of zinc can effectively inhibit the component segregation phenomenon of the matrix aluminum, and meanwhile, the generated hydroxide precipitate is easy to fall off from the surface of the matrix aluminum in the hydrolysis reaction process, so that the oxide film on the surface of the matrix aluminum is easy to break, and the integrity of the oxide film on the surface of the aluminum-based alloy is obviously reduced. The hydrolysis hydrogen production rate of the aluminum alloy can be realized by regulating and controlling the element content and the microstructure of the aluminum alloyThe hydrogen yield can be adjusted and controlled.
The preparation method is efficient and simple, complex equipment and procedures are not needed in the preparation process, large-scale industrial production is easy to realize, the cost is low, the prepared aluminum alloy is massive, the problem of flammability and explosiveness is avoided, the risk of flammability and explosiveness caused by overlarge specific surface area of the powder aluminum alloy is avoided, and the powder aluminum alloy is convenient to store and transport.
Drawings
FIG. 1 shows AlBi in example 1 7.5 Ce 3.5 Mg 1.4 Zn 1.5 Scanning a microscope back scattering image 1000 times by using the alloy;
FIG. 2 shows AlBi in example 1 7.5 Ce 3.5 Mg 1.4 Zn 1.5 A back scattering image of a scanning electron microscope with the quantity 3000 times that of white sharp-corner and sharp-edge metal bismuth is highlighted in the alloy;
FIG. 3 shows AlBi in example 1 7.5 Ce 3.5 Mg 1.4 Zn 1.5 Aluminium with accordion fold highlighted in alloy 4 RE and Al 3 Mg 2 Scanning a microscope back scattering image by 3000 times of a nano sheet precipitated phase;
FIG. 4 shows AlBi in example 1 7.5 Ce 3.5 Mg 1.4 Zn 1.5 3000 times of back scattering images of a scanning electron microscope for displaying white sharp-edge-shaped metal bismuth are highlighted in the alloy;
FIG. 5 shows AlBi in example 1 7.5 Ce 3.5 Mg 1.4 Zn 1.5 The hydrogen production curve of the alloy by hydrolysis in seawater.
Detailed Description
For a better understanding of the present invention, the present invention is further described below with reference to the drawings and examples, but the scope of the present invention is not limited to the examples.
The hydrolysis hydrogen production aluminum alloy containing accordion-pleated nanosheet layer precipitated phase comprises the components of AlBi x RE y Mg z1 Zn z2 RE is any one of rare earth La, ce and Y, x is more than 0.1 percent and less than 10 percent, Y is more than 0.1 percent and less than 10 percent, z1 is more than 0.1 percent and less than 10 percent, z2 is more than 0.1 percent and less than 10 percent, and the rest is Al. The letters in the above-mentioned compositional formula,except for RE and suffix, the others correspond to elements in the periodic table.
The aluminum alloy has an accordion-shaped nanosheet layer microstructure, and the alloy phase comprises a matrix alpha-Al solid solution, a second phase in network distribution and a heavy metal-rich phase separated out in a dispersed manner in a sharp edge shape. The microstructure of the accordion-pleated nano-sheet layer is that a large amount of Al exists in the aluminum alloy 4 RE、Al 3 Mg 2 The nano-sheet layer is separated out along the grain boundary and is in an accordion pleat shape.
Example 1
A hydrolysis hydrogen production aluminum alloy containing accordion-folded nanosheet layer precipitated phase and a preparation method thereof comprise the following steps:
(1) Preparing materials: selecting raw materials comprising massive metal aluminum (Al), bismuth (Bi), rare earth cerium (Ce), magnesium (Mg) and zinc (Zn), and proportioning according to the proportion of 7.5 percent of bismuth, 3.5 percent of cerium, 1.4 percent of magnesium, 1.5 percent of zinc and the balance of aluminum by weight, wherein the purity of all the raw materials is more than or equal to 99.5 percent;
(2) Melting: feeding materials into a heat-resistant steel crucible electric melting furnace to melt the aluminum blocks, heating to 750 ℃, adding the bismuth, the rare earth cerium and the zinc ingots in batches, fully stirring after melting, and deslagging to obtain a melt I; cooling to 710 ℃, adding the magnesium ingot, and melting to obtain a melt II;
(3) Refining: heating the melt II to 750 ℃, uniformly throwing a refining agent into the melt, and fully and uniformly stirring to obtain a melt III; then introducing argon gas, and refining for 30min to obtain a melt IV; the total amount of the refining agent is 1.5 percent of the weight of the melt;
(4) Modification: adding Al-Ti-B alloy into the melt IV to perform modification treatment for 1.5 hours to obtain a melt V; standing for 3.0 hours to obtain a melt VI;
(5) Pouring: after the temperature of the melt VI is reduced to 690 ℃, deslagging is carried out completely, pouring into a metal mold for molding, and obtaining a product AlBi 7.5 Ce 3.5 Mg 1.4 Zn 1.5 A bulk aluminum alloy.
The refining agent is the essence adopted in all the embodiments of the inventionThe refining agent is KCl, naCl, caF 2 And Na 3 AlF 6 The components are 40%, 8% and 12% by weight respectively.
The Al-Ti-B alloy is the prior art, and the Al-Ti-B alloy adopted in all the embodiments of the invention comprises the following components in percentage by weight: 5 percent of Ti; b, 1 percent; fe is less than or equal to 0.20 percent; si is less than or equal to 0.20 percent; the balance being Al.
Bulk AlBi prepared in this example 7.5 Ce 3.5 Mg 1.4 Zn 1.5 The microscopic morphology of the aluminum alloy is shown in figures 1-4: FIG. 1 shows AlBi 7.5 Ce 3.5 Mg 1.4 Zn 1.5 Alloy 1000 times scanning electron microscope back scattering image; FIG. 2 shows AlBi 7.5 Ce 3.5 Mg 1.4 Zn 1.5 Alloy back scattering image 3000 times of scanning electron microscope (metal bismuth is white sharp-angled and sharp-edged); FIG. 3 shows AlBi 7.5 Ce 3.5 Mg 1.4 Zn 1.5 Alloy back scattering image (Al) 3000 times scanning electron microscope 4 RE and Al 3 Mg 2 The precipitated phase of the nano-sheet layer is in an accordion shape); FIG. 4 shows AlBi 7.5 Ce 3.5 Mg 1.4 Zn 1.5 Alloy back scattering image (metal bismuth is separated out in white sharp blade shape) of 3000 times scanning electron microscope; alBi 7.5 Ce 3.5 Mg 1.4 Zn 1.5 The alloy has an accordion-shaped nano-sheet structure, and the alloy phase comprises a matrix alpha-Al solid solution, a second phase in network distribution formed by the connection of nano-sheets and a heavy metal element-rich phase dispersed and precipitated in a sharp edge shape. A large amount of Al 4 Ce、Al 3 Mg 2 The nanosheet layer is separated out along the crystal boundary and is accordion-folded, so that a convenient channel is provided for the continuous generation of the hydrogen evolution reaction; the brittle and hard simple substance bismuth is precipitated in the aluminum alloy in a sharp edge shape to cut the aluminum alloy matrix, so that more microscopic crystal defects and macroscopic defects such as holes, cracks, rough surface and the like are caused, and the defects enable the aluminum alloy to be in a high-activity state, so that the aluminum alloy is activated to hydrolyze to produce hydrogen.
Bulk AlBi of the present example 7.5 Ce 3.5 Mg 1.4 Zn 1.5 The aluminum alloy can be used for preparing hydrogen by hydrolysis. For hydrolysis hydrogen productionPer gram of AlBi 7.5 Ce 3.5 Mg 1.4 Zn 1.5 The total hydrogen production of 720ml after the aluminum alloy contacts with seawater at 25 ℃ and is hydrolyzed to produce hydrogen reaction for 0.5h, and the rate curve of the hydrolyzed hydrogen production is shown in figure 5.
Example 2
A hydrolysis hydrogen production aluminum alloy containing accordion-folded nano-sheet precipitated phase and a preparation method thereof comprise the following steps:
(1) Preparing materials: selecting raw materials comprising massive metal aluminum, bismuth, rare earth lanthanum (La), magnesium and zinc, and proportioning according to the proportion of 10 percent of bismuth, 8.5 percent of lanthanum, 6 percent of magnesium, 8 percent of zinc and the balance of aluminum by weight percent, wherein the purity of all the raw materials is more than or equal to 99.5 percent;
(2) Melting: feeding materials into a heat-resistant steel crucible electric melting furnace to melt the aluminum blocks, heating to 780 ℃, adding the bismuth, the rare earth and the zinc ingots in batches, fully stirring after melting, and slagging to obtain a melt I; cooling to 700 ℃, adding the magnesium ingot, and melting to obtain a melt II;
(3) Refining: heating the melt II to 740 ℃, uniformly throwing a refining agent into the melt, and fully and uniformly stirring to obtain a melt III; then introducing argon, and refining for 20min to obtain a melt IV; the total amount of the refining agent is 1.0 percent of the weight of the melt;
(4) Modification: adding Al-Ti-B alloy into the melt IV to perform modification treatment for 1.0h to obtain a melt V; standing for 2.0h to obtain a melt VI;
(5) Pouring: after the temperature of the melt VI is reduced to 700 ℃, slagging off is clean, pouring the melt VI into a metal mold for molding to obtain a product AlBi 10 La 8.5 Mg 6 Zn 8 Bulk aluminum alloy.
Bulk AlBi of the present example 10 La 8.5 Mg 6 Zn 8 The aluminum alloy can be used for preparing hydrogen by hydrolysis. When the catalyst is used for preparing hydrogen by hydrolysis, per gram of AlBi 10 La 8.5 Mg 6 Zn 8 The aluminum alloy is contacted with seawater at 25 ℃ and then hydrolyzed to produce hydrogen, and the total hydrogen production is 615ml after 0.5h of hydrogen production reaction.
Example 3
A hydrolysis hydrogen production aluminum alloy containing accordion-folded nano-sheet precipitated phase and a preparation method thereof comprise the following steps:
(1) Preparing materials: selecting raw materials comprising massive metal aluminum, bismuth, rare earth yttrium (Y), magnesium and zinc, and proportioning according to the proportion of 1.6 percent of bismuth, 0.5 percent of yttrium, 0.4 percent of magnesium, 0.5 percent of zinc and the balance of aluminum by weight percent, wherein the purity of all the raw materials is more than or equal to 99.5 percent;
(2) Melting: feeding materials into a heat-resistant steel crucible electric melting furnace to melt the aluminum blocks, heating to 730 ℃, adding the bismuth, the rare earth yttrium and the zinc ingots in batches, fully stirring after melting, and deslagging to obtain a melt I; cooling to 690 ℃, adding the magnesium ingot, and melting to obtain a melt II;
(3) Refining: heating the melt II to 720 ℃, uniformly throwing a refining agent into the melt, and fully and uniformly stirring to obtain a melt III; then introducing argon gas, and refining for 10min to obtain a melt IV; the total amount of the refining agent is 1.5 percent of the weight of the melt;
(4) Modification: adding Al-Ti-B alloy into the melt IV to perform modification treatment for 0.5h to obtain a melt V; standing for 1.0h to obtain a melt VI;
(5) Pouring: after the temperature of the melt VI is reduced to 690 ℃, deslagging is carried out completely, pouring into a metal mold for molding, and obtaining a product AlBi 1.6 Y 0.5 Mg 0.4 Zn 0.5 A bulk aluminum alloy.
Bulk AlBi of the present example 1.6 Y 0.5 Mg 0.4 Zn 0.5 The aluminum alloy can be used for preparing hydrogen by hydrolysis. When the catalyst is used for preparing hydrogen by hydrolysis, per gram of AlBi 1.6 Y 0.5 Mg 0.4 Zn 0.5 The aluminum alloy is contacted with seawater at 25 ℃ and then is hydrolyzed to produce hydrogen, and the total hydrogen production is 480ml after 0.5h of reaction.
Example 4
A hydrolysis hydrogen production aluminum alloy containing accordion-folded nanosheet layer precipitated phase and a preparation method thereof comprise the following steps:
(1) Preparing materials: selecting raw materials comprising massive metal aluminum, bismuth, rare earth cerium, magnesium and zinc, proportioning according to the proportion of 3.5 percent of bismuth, 2.5 percent of cerium, 1.8 percent of magnesium, 0.6 percent of zinc and the balance of aluminum by weight percent, wherein the purity of all the raw materials is more than or equal to 99.5 percent;
(2) Melting: feeding materials into a heat-resistant steel crucible electric melting furnace to melt the aluminum blocks, heating to 750 ℃, adding the bismuth, the rare earth cerium and the zinc ingots in batches, fully stirring after melting, and deslagging to obtain a melt I; cooling to 710 ℃, adding the magnesium ingot, and melting to obtain a melt II;
(3) Refining: heating the melt II to 750 ℃, uniformly throwing a refining agent into the melt, and fully and uniformly stirring to obtain a melt III; then introducing argon gas, and refining for 30min to obtain a melt IV; the total amount of the refining agent is 1.5 percent of the weight of the melt;
(4) Modification: adding Al-Ti-B alloy into the melt IV to perform modification treatment for 1.5h to obtain a melt V; standing for 3.0 hours to obtain a melt VI;
(5) Pouring: after the temperature of the melt VI is reduced to 690 ℃, deslagging is carried out completely, pouring into a metal mold for molding, and obtaining a product AlBi 3.5 Ce 2.5 Mg 1.8 Zn 0.6 A bulk aluminum alloy.
Bulk AlBi of the present example 3.5 Ce 2.5 Mg 1.8 Zn 0.6 The aluminum alloy can be used for preparing hydrogen by hydrolysis. When the catalyst is used for preparing hydrogen by hydrolysis, per gram of AlBi 3.5 Ce 2.5 Mg 1.8 Zn 0.6 The aluminum alloy is contacted with seawater at 25 ℃ and then is hydrolyzed to produce hydrogen, and the total hydrogen production is 530ml after 0.5 h.
Claims (5)
1. The aluminum alloy for hydrogen production through hydrolysis, which contains accordion-folded nanosheet layer precipitated phase, is characterized in that the aluminum alloy comprises the components of AlBi x RE y Mg z1 Zn z2 RE is any one of rare earth La, ce and Y, x is more than 0.1 percent and less than 10 percent, Y is more than 0.1 percent and less than 10 percent, z1 is more than 0.1 percent and less than 10 percent, z2 is more than 0.1 percent and less than 10 percent, and the rest is Al.
2. The aluminum alloy for hydrogen production by hydrolysis containing the accordion-pleated nanosheet-like precipitated phase as claimed in claim 1, wherein the aluminum alloy has an accordion-like nanosheet-like microstructure, and the alloy phase comprises a matrix alpha-Al solid solution, a second phase in which the nanosheets are connected and distributed in a network shape, and a heavy metal-rich phase which is dispersed and precipitated in a sharp edge shape.
3. A method for preparing an aluminum alloy for hydrogen production by hydrolysis containing a precipitated phase of accordion-pleated nanosheets as defined in claim 1 or claim 2, comprising the steps of:
(1) Preparing materials: selecting massive metal aluminum, bismuth, rare earth, magnesium and zinc ingots, and mixing according to the proportion of 0.1-10% by weight of bismuth, 0.1-10% by weight of rare earth metal RE, 0.1-10% by weight of magnesium, 0.1-10% by weight of zinc and the balance of aluminum;
(2) Melting: melting the aluminum block by using a crucible electric melting furnace, heating to 730-780 ℃, adding the bismuth, the rare earth and the zinc ingot in batches, fully stirring after melting, and slagging to obtain a melt I; cooling to 690-710 ℃, adding the magnesium ingot, and melting to obtain a melt II;
(3) Refining: heating the melt II to 720-750 ℃, uniformly throwing a refining agent into the melt, and fully and uniformly stirring to obtain a melt III; then introducing argon, and refining for 10-30 min to obtain a melt IV;
(4) Modification: adding Al-Ti-B alloy into the melt IV to perform modification treatment for 0.5-1.5 h to obtain a melt V; standing for 1.0-3.0 h to obtain a melt VI;
(5) Pouring: and after the temperature of the melt VI is reduced to 690-720 ℃, deslagging, and then pouring into a metal mold for molding to obtain the product block aluminum alloy.
4. The method for preparing the aluminum alloy for hydrogen production by hydrolysis, which contains the precipitated phase of the accordion-pleated nanosheet layer as defined in claim 3, wherein in step (3), the refining agent is added in an amount of 0.5 to 1.5% by weight based on the weight of the melt.
5. The application of the aluminum alloy for preparing hydrogen through hydrolysis, which contains the precipitated phase of the accordion-folded nanosheet layer, is characterized in that the aluminum alloy is used for preparing hydrogen through hydrolysis.
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| KR20100031911A (en) * | 2008-09-16 | 2010-03-25 | 한국과학기술원 | Alloy design of al alloys and their production method for fast hydrogen generation from hydrolysis reaction in alkaline water |
| CN101798061A (en) * | 2010-03-12 | 2010-08-11 | 上海师范大学 | Aluminum-rare earth micro nano composite hydrogen manufacturing material |
| CN109136667A (en) * | 2018-11-01 | 2019-01-04 | 江苏迅易新能源科技有限公司 | A kind of aluminium alloy and preparation method thereof for hydrogen manufacturing |
| CN110872662A (en) * | 2018-08-30 | 2020-03-10 | 陈存涛 | Aluminum substrate for hydrogen production by hydrolysis and preparation method |
| CN111705241A (en) * | 2020-07-03 | 2020-09-25 | 兰州理工大学 | Al alloy for preparing hydrogen and preparation method and application thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100031911A (en) * | 2008-09-16 | 2010-03-25 | 한국과학기술원 | Alloy design of al alloys and their production method for fast hydrogen generation from hydrolysis reaction in alkaline water |
| CN101798061A (en) * | 2010-03-12 | 2010-08-11 | 上海师范大学 | Aluminum-rare earth micro nano composite hydrogen manufacturing material |
| CN110872662A (en) * | 2018-08-30 | 2020-03-10 | 陈存涛 | Aluminum substrate for hydrogen production by hydrolysis and preparation method |
| CN109136667A (en) * | 2018-11-01 | 2019-01-04 | 江苏迅易新能源科技有限公司 | A kind of aluminium alloy and preparation method thereof for hydrogen manufacturing |
| CN111705241A (en) * | 2020-07-03 | 2020-09-25 | 兰州理工大学 | Al alloy for preparing hydrogen and preparation method and application thereof |
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