CN116062685A - Al-Bi capable of preparing hydrogen by rapid and efficient water reaction 2 O 3 Alloy powder and preparation method thereof - Google Patents
Al-Bi capable of preparing hydrogen by rapid and efficient water reaction 2 O 3 Alloy powder and preparation method thereof Download PDFInfo
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- CN116062685A CN116062685A CN202111269005.0A CN202111269005A CN116062685A CN 116062685 A CN116062685 A CN 116062685A CN 202111269005 A CN202111269005 A CN 202111269005A CN 116062685 A CN116062685 A CN 116062685A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/08—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents with metals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention discloses an Al-Bi for high-efficiency and rapid hydrogen production 2 O 3 An alloy powder and a preparation method thereof belong to the field of green high-efficiency hydrogen production. The invention adopts a high-efficiency ball milling method, wherein the composition of the grinding powder is Al-90wt%, bi-5wt% and Bi 2 O 3 -5wt%, the mass ratio of the powder balls is 20:1, setting the rotating speed to 800rpm/min, and ball milling for 3 hours. Al-Bi prepared by the invention 2 O 3 The hydrogen yield of the alloy powder can reach 970ml/g when the alloy powder reacts with water with the initial temperature of 35 ℃. Al-Bi according to the present invention 2 O 3 The preparation method of the alloy powder has wide sources of raw materials, and is simple, easy and feasible.
Description
Technical Field
The invention belongs to the field of green high-efficiency hydrogen production, and in particular relates to a method for preparing aluminum-based alloy powder for hydrogen production by water reaction by taking aluminum powder, bismuth powder and bismuth oxide as raw materials.
Background
Hydrogen has been widely focused as a representative of new energy, has a series of advantages of clean and pollution-free after combustion, renewable, and the like, and the existing traditional hydrogen production method mainly comprises the following steps: methane reforming hydrogen production, water electrolysis hydrogen production, biological hydrogen production and the like.
The method for producing secondary energy hydrogen by using fossil fuels such as coal, petroleum and the like as raw materials is the most widely used hydrogen production method at present, but the method is still limited by traditional energy, and the preparation process is complex and has high requirements on equipment. Although the method for producing hydrogen by electrolyzing water has been known for a long time, the method cannot be popularized and applied because the efficiency of converting electric energy into hydrogen energy is low, and the large-scale production is difficult. Biological hydrogen production is an emerging hydrogen production method at present, and the principle is that biomass is utilized for fermentation, hydrogen is produced by means of metabolism of internal microorganisms, and the process for preparing and extracting hydrogen by the method is complex, has poor controllability and needs further optimization. So a green, simple and efficient hydrogen production method is needed.
The reaction of metal with water to produce hydrogen is an effective method of transporting and storing hydrogen. Among them, metallic aluminum is receiving a great deal of attention because of its abundant content in the crust and excellent hydrogen production performance. But the formation of a dense oxide layer on the surface of the metallic aluminum prevents the metallic aluminum from reacting with water. In order to improve the water reactivity of the metal aluminum, a physical ball milling method can be used for introducing metal oxide, metal salt and low-melting-point metal to activate the metal aluminum.
Disclosure of Invention
The invention aims to overcome the defects of the prior hydrogen production technology and provides a novel aluminum-based alloy powder compound capable of producing hydrogen rapidly and efficiently and a preparation method thereof.
The aim of the invention is achieved by the following technical scheme.
The invention provides an Al-Bi for preparing hydrogen rapidly and efficiently 2 O 3 Alloy powder comprising Al powder, bi powder and Bi 2 O 3 The powder comprises the following components in percentage by weight: al-90wt%, bi-5wt%, bi 2 O 3 -5 wt%. The micro morphology of the used Al powder is spherical, and the average grain diameter is 3-5 mu m. The micro morphology of the Bi powder is irregular block, the average grain diameter is 10-50 mu m, and the Bi is 2 O 3 The powder is also in irregular block shape, and the average grain diameter is 5-10 mu m.
Al-Bi capable of rapidly and efficiently producing hydrogen 2 O 3 The preparation method of the alloy powder comprises the following steps: respectively weighing a certain amount of Al powder, bi powder and Bi 2 O 3 The powder is put into a ball milling tank with the volume of 1L, mixed grinding balls are added, petroleum ether or normal hexane is added as a protective agent for ball milling, and finally, a separation sieve is used for separating and collecting the grinding materials from the grinding balls.
Advantageous effects
(1)The invention uses a mechanical ball milling method to mix Bi powder and Bi 2 O 3 The powder is compounded with Al powder to prepare a compound capable of efficiently and rapidly producing hydrogen;
(2) The invention is to maintain the prepared Al-Bi 2 O 3 The alloy powder is preserved in petroleum ether or n-hexane to prevent oxidation by oxygen in air;
(3) Al-Bi prepared by the invention 2 O 3 When the compound reacts with distilled water with the initial temperature of 35 ℃, the total hydrogen yield can reach 970mL/g, the temperature is raised to 45 ℃, the temperature is 55 ℃, and the total hydrogen yield at 65 ℃ is 940, 1140 and 1160mL/g respectively;
(4) Al-Bi prepared by the invention 2 O 3 The alloy powder has wide material source and simple preparation process.
Drawings
FIG. 1 is a schematic diagram of Al-Bi 2 O 3 Distilled water reaction hydrogen production curve of alloy powder at initial temperature of 35 deg.c, 45 deg.c, 55 deg.c and 65 deg.c (hydrogen production curve of Al-Bi-Bi2O3 at different temperatures).
Detailed Description
Example 1
Weighing Al-90wt%, bi-5wt% and Bi 2 O 3 5wt% of alloy powder with the total amount of 30g is put into a ball milling tank with the volume of 1L, steel balls with the mass of 600g are added, petroleum ether is added as a protective agent, ball milling is carried out for 3 hours at the rotating speed of 800rpm/min, finally, a filter screen is used for separating grinding materials from the grinding balls, and the petroleum ether and the ball milling powder are collected, placed and stored together.
Example 2
Weighing Al-90wt%, bi-6wt% and Bi 2 O 3 4wt% of the material is placed into a ball milling tank with the volume of 1L, steel balls with the mass of 600g are added, petroleum ether is added as a protective agent, ball milling is carried out for 3 hours at the rotating speed of 800rpm/min, finally, a filter screen is used for separating the grinding material from the grinding balls, and the petroleum ether and the ball milling powder are collected, placed and stored.
Example 3
Weighing Al-90wt%, bi-7wt% and Bi 2 O 3 3 wt.% of the mixture was placed in a ball mill pot having a volume of 1L and the mass was added600g of steel balls, adding petroleum ether as a protective agent, ball milling for 3 hours at the rotating speed of 800rpm/min, separating the grinding material from the grinding balls by using a filter screen, and collecting, placing and preserving the petroleum ether and the ball milling powder.
And (3) drying the serial alloy powder obtained by ball milling in a vacuum oven at 60 ℃, removing petroleum ether, weighing 0.2g of alloy powder, adding the alloy powder into 25mL of distilled water at 35 ℃ for hydrogen production reaction, wherein the total hydrogen production amount can reach 900-1100 mL/g.
Claims (4)
1. Al-Bi capable of quickly and efficiently producing hydrogen 2 O 3 An alloy powder and a preparation method thereof are characterized in that: the alloy powder is prepared by adopting a ball milling method, and the components account for 90wt% of Al, 5wt% of Bi and 5wt% of Bi 2 O 3 -5 wt％。
2. Al-Bi capable of rapidly and efficiently producing hydrogen 2 O 3 An alloy powder and a preparation method thereof are characterized in that: in the ball milling process, the mass ratio of the added ball powder is 20:1, the rotating speed is set to 800rpm/min, the time is 3 hours, and the protective agent is petroleum ether.
3. Al-Bi capable of rapidly and efficiently producing hydrogen 2 O 3 An alloy powder and a preparation method thereof are characterized in that: the micro morphology of the used Al powder is spherical, and the average grain diameter is 3-5 mu m. The micro morphology of the Bi powder is irregular block, the average grain diameter is 10-50 mu m, and the Bi is 2 O 3 The powder is also in irregular block shape, and the average grain diameter is 5-10 mu m.
4. Al-Bi capable of rapidly and efficiently producing hydrogen 2 O 3 An alloy powder and a preparation method thereof are characterized in that: after ball milling, the powder material mixed in petroleum ether is separated from grinding balls by a separating screen, and Al-Bi is obtained 2 O 3 The alloy powder is continuously collected and stored in petroleum ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111269005.0A CN116062685A (en) | 2021-10-29 | 2021-10-29 | Al-Bi capable of preparing hydrogen by rapid and efficient water reaction 2 O 3 Alloy powder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111269005.0A CN116062685A (en) | 2021-10-29 | 2021-10-29 | Al-Bi capable of preparing hydrogen by rapid and efficient water reaction 2 O 3 Alloy powder and preparation method thereof |
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| Publication Number | Publication Date |
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| CN116062685A true CN116062685A (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111269005.0A Pending CN116062685A (en) | 2021-10-29 | 2021-10-29 | Al-Bi capable of preparing hydrogen by rapid and efficient water reaction 2 O 3 Alloy powder and preparation method thereof |
Country Status (1)
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| CN (1) | CN116062685A (en) |
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2021
- 2021-10-29 CN CN202111269005.0A patent/CN116062685A/en active Pending
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