CN115928104A - Method for preparing hydrogen - Google Patents
Method for preparing hydrogen Download PDFInfo
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- CN115928104A CN115928104A CN202310027665.0A CN202310027665A CN115928104A CN 115928104 A CN115928104 A CN 115928104A CN 202310027665 A CN202310027665 A CN 202310027665A CN 115928104 A CN115928104 A CN 115928104A
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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
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Abstract
The invention belongs to the technical field of hydrogen preparation, and discloses a method for preparing hydrogen, which specifically comprises the following steps: immersing electrodes in an electrolyte, the electrolyte comprising water and a catalyst, and the electrodes comprising a first electrode comprising copper and a second electrode comprising iron; controlling the temperature of the electrolyte to be 60-100 ℃; and applying direct current voltage to the electrode for electrocatalysis, so that the water in the electrolyte is catalytically decomposed on the surface of the electrode to generate hydrogen. Specifically, the catalyst in the electrolyte is an acidic catalyst containing solid phosphoric acid, and water in the electrolyte is catalytically decomposed on the surface of the first electrode containing copper to generate hydrogen. In conclusion, the method for preparing hydrogen has simple steps and process and low cost.
Description
Technical Field
The invention belongs to the technical field of hydrogen preparation, and particularly relates to a method for preparing hydrogen.
Background
The traditional hydrogen preparation method generally adopts fossil energy to prepare hydrogen, but the hydrogen preparation method by the fossil energy depends on the fossil energy and cannot solve the problem of energy exhaustion. Meanwhile, the hydrogen production process has high energy consumption and serious pollution.
Solar energy, wind energy and nuclear energy are used as renewable energy sources, and the problem of energy exhaustion can be effectively solved by applying the energy sources to hydrogen preparation. For example: the hydrogen is produced by electrolyzing water through power generation of renewable energy sources, and the hydrogen production process is clean, so that the problem of environmental pollution is also avoided. However, in practical production, the method of producing hydrogen by using renewable energy still has the disadvantages of immature technology, preparation of expensive and complex catalyst, high cost, low energy density, low efficiency and long reaction time.
Disclosure of Invention
Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method for producing hydrogen gas in mild hot water at low cost, efficiently and cleanly.
In order to achieve the purpose, the invention provides the following technical scheme:
the method for preparing hydrogen comprises the following steps:
immersing electrodes in an electrolyte, the electrolyte comprising water and a catalyst, and the electrodes comprising a first electrode comprising copper and a second electrode comprising iron;
controlling the temperature of the electrolyte to be 60-100 ℃;
and applying direct current voltage to the electrode for electrocatalysis, so that the water in the electrolyte is catalytically decomposed on the surface of the electrode to generate hydrogen.
Preferably, the electrolyte is maintained in a circulating flow.
Preferably, a hydrogen separation device is provided on a circulation flow path of the electrolyte, and hydrogen is separated from the electrolyte containing hydrogen by the hydrogen separation device.
Preferably, the first electrode comprises at least elemental copper and/or a copper-based alloy.
Preferably, the second electrode comprises at least elemental iron and/or an iron-based alloy.
Preferably, the temperature of the electrolyte is controlled to be 70-90 ℃.
Preferably, the temperature of the electrolyte is controlled to be 80 ℃.
Preferably, the electrolyte contains an acid catalyst, and water in the electrolyte is catalytically decomposed at the surface of the first electrode containing copper to generate hydrogen.
Preferably, the acidic catalyst comprises solid phosphoric acid.
Compared with the prior art, the invention has the following beneficial effects:
the method for preparing hydrogen gas of the invention respectively takes the metallic iron substance and the metallic copper substance as the positive/negative electrodes, takes the solid phosphoric acid as the catalyst, and utilizes the electrochemical reaction to electrolyze water under the condition of constant temperature heating to prepare the hydrogen gas, and the method has simple process steps and low cost.
Drawings
FIG. 1 is a flow diagram of a process for producing hydrogen in accordance with the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
FIG. 1 is a flow chart of a method for preparing hydrogen according to the present invention, which shows that the method comprises the following preparation steps:
s1, preparing an electrode
Using an iron plate at least comprising elementary iron and/or iron-based alloy as a second electrode (positive electrode)
A copper plate including at least elemental copper and/or a copper-based alloy is used as a first electrode (negative electrode).
S2, preparing electrolyte
Water is used as the main component of the electrolyte, and solid phosphoric acid is added into the electrolyte as a catalyst.
And S3, immersing the electrode into electrolyte.
S4, arranging a heating device for heating the electrolyte, and keeping the constant temperature of the electrolyte to be 73 ℃ through heating.
And S5, connecting the electrode with a power supply, and applying direct-current voltage to the electrode through the power supply to perform electrocatalysis. The water in the electrolyte is catalytically decomposed on the surface of the first electrode (negative electrode) containing copper by electrocatalysis to generate hydrogen.
S6, electrolyte flows circularly, a hydrogen separation device is arranged on a circulating flow path of the electrolyte, and hydrogen is separated from the electrolyte containing hydrogen through the hydrogen separation device.
And S7, storing the separated hydrogen by using a gas storage bottle.
Example two
FIG. 1 is a flow chart of a method for preparing hydrogen according to the present invention, which shows that the method comprises the following preparation steps:
s1, preparing an electrode
Using an iron plate at least comprising elementary iron and/or iron-based alloy as a second electrode (positive electrode)
The simple substance copper plate is used as a first electrode (negative electrode).
S2, preparing electrolyte
Water is used as the main component of the electrolyte, and solid phosphoric acid is added into the electrolyte as a catalyst.
And S3, immersing the electrode into electrolyte.
S4, arranging a heating device for heating the electrolyte, and keeping the constant temperature of the electrolyte to be 80 ℃ through heating.
And S5, connecting the electrode with a power supply, and applying direct-current voltage to the electrode through the power supply to perform electrocatalysis. And (3) catalytically decomposing water in the electrolyte on the surface of the first electrode (negative electrode) of the simple substance copper plate by electrocatalysis to generate hydrogen.
S6, electrolyte flows in a circulating mode, a hydrogen separation device is arranged on a circulating flow path of the electrolyte, and hydrogen is separated from the electrolyte containing the hydrogen through the hydrogen separation device.
And S7, storing the separated hydrogen by using a gas storage bottle.
In summary, the electrochemical reaction process of the overall electrolysis of water in the two embodiments is as follows:
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A method of producing hydrogen, comprising the steps of:
immersing electrodes in an electrolyte, the electrodes comprising a first electrode comprising copper and a second electrode comprising iron, the electrolyte comprising water and a catalyst;
controlling the temperature of the electrolyte to be 60-100 ℃;
and applying direct current voltage to the electrode for electrocatalysis, so that the water in the electrolyte is catalytically decomposed on the surface of the electrode to generate hydrogen.
2. The method for producing hydrogen according to claim 1, characterized in that: and maintaining the electrolyte to circularly flow.
3. The method for producing hydrogen according to claim 2, characterized in that: a hydrogen separation device is provided on a circulation flow path of the electrolyte, and hydrogen is separated from the electrolyte containing hydrogen by the hydrogen separation device.
4. The method for producing hydrogen according to claim 1, characterized in that: the first electrode includes at least elemental copper and/or a copper-based alloy.
5. The method for producing hydrogen according to claim 1, characterized in that: the second electrode comprises at least elemental iron and/or an iron-based alloy.
6. The method for producing hydrogen according to claim 1, characterized in that: the temperature of the electrolyte is controlled to be 70-90 ℃.
7. The method for producing hydrogen according to claim 1 or 6, characterized in that: the temperature of the electrolyte is controlled to be 80 ℃.
8. The method for producing hydrogen according to claim 1, characterized in that: the electrolyte contains an acid catalyst, and water in the electrolyte is catalytically decomposed at the surface of the first electrode containing copper to generate hydrogen.
9. The method for producing hydrogen according to claim 8, characterized in that: the acidic catalyst comprises solid phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310027665.0A CN115928104A (en) | 2023-01-09 | 2023-01-09 | Method for preparing hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310027665.0A CN115928104A (en) | 2023-01-09 | 2023-01-09 | Method for preparing hydrogen |
Publications (1)
| Publication Number | Publication Date |
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| CN115928104A true CN115928104A (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202310027665.0A Pending CN115928104A (en) | 2023-01-09 | 2023-01-09 | Method for preparing hydrogen |
Country Status (1)
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| CN (1) | CN115928104A (en) |
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2023
- 2023-01-09 CN CN202310027665.0A patent/CN115928104A/en active Pending
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