Method for producing hydrogen through hydrolysis of high hydrogen storage material hydrazine borane

Abstract

The invention relates to the field of new energy hydrogen storage and hydrogen production, in particular to a method for strengthening hydrogen production through hydrazine borane hydrolysis of a high-hydrogen-storage material, which improves the hydrogen production performance of hydrazine borane hydrolysis by increasing an external electric field, not only realizes the improvement of the hydrogen production performance in a traditional hydrazine borane hydrolysis hydrogen production technology, but also can be combined with other methods for use, and has a wide application prospect. The method has the advantages that the steps are simple and convenient, the hydrogen production rate can be conveniently adjusted by increasing the starting and stopping of an external electric field and the intensity of the electric field, the automatic control is easy, the cost is low, and the method is suitable for large-scale popularization and application.

Description

Technical Field

[0001] The invention relates to the field of new energy hydrogen storage and hydrogen production, and in particular to a method for enhancing hydrogen production by hydrolyzing hydrazine borane, a high hydrogen storage material. Background Art

[0003] Hydrazine borane (N2H4BH3, HB) has the advantages of being easy to synthesize, being solid at room temperature, and having a high hydrogen content (15.4 wt%). Under the action of a catalyst, hydrazine borane can produce hydrogen through a hydrolysis reaction at room temperature. The catalytic hydrolysis hydrogen production reaction of hydrazine borane is shown in formula (1). However, the complete release of hydrogen from hydrazine borane generally requires the use of precious metal Pt and Pd catalysts. Although non-precious metal catalysts such as Ni and Cu also have certain activity, the catalytic hydrogen production rate is slow and the comprehensive hydrogen production effect is not ideal. There are certain limitations in the application of catalytic hydrazine borane hydrolysis hydrogen production technology.

[0004] (1) Therefore, it is particularly important to provide a method for enhancing the production of hydrogen by hydrolysis of hydrazine borane, a high hydrogen storage material. Summary of the invention

[0005] In order to overcome the shortcomings of the background technology, the present invention provides a method for enhancing the hydrogen production by hydrolysis of hydrazine borane, a high hydrogen storage material. The present invention proposes a method for enhancing the hydrogen production performance of hydrazine borane hydrolysis by applying an external electric field. When an electric field voltage ≥70V is applied to the hydrogen production system, the hydrogen production rate is increased by ≥11.5%; no ammonia production side reaction occurs in the reaction, the product does not contain ammonia gas, and the hydrogen production selectivity is 100%. The method has the characteristics of simple system implementation and good effect of improving the hydrogen production rate.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solution: A method for enhancing the production of hydrogen by hydrolysis of hydrazine borane, a high hydrogen storage material, wherein an external electric field is applied to a hydrogen storage material hydrazine borane catalytic hydrolysis hydrogen production system to activate the BH chemical bonds in the hydrazine borane, thereby reducing the energy barrier for the hydrolysis and hydrogen production in different types of reaction liquids, thereby improving the performance of the hydrazine borane hydrolysis and hydrogen production. The specific method is as follows: First, a hydrazine borane solution and a catalyst are mixed according to a set ratio to obtain a hydrogen production reaction liquid, and then the hydrogen production reaction liquid is placed in a hydrogen production reactor in a hydrogen production system and covered with a cover plate, the hydrogen production reactor is placed on a magnetic stirrer, a thermocouple in the hydrogen production system is connected to a data acquisition device, the thermocouple connected to the data acquisition device is inserted into the hydrogen production reactor and the temperature in the hydrogen production reaction liquid is measured, and the magnetic stirrer stirs the hydrogen production reaction liquid at a uniform speed to make the hydrazine borane hydrolysis reaction proceed uniformly; The electric heater connected to the DC power converter heats the reaction liquid, and cooperates with the thermocouple and the temperature control module in the data processor to heat the reaction liquid to the set temperature, so that the reaction temperature of the hydrogen production reaction liquid is controlled at 25°C to 40°C. The thermocouple measures the temperature of the hydrogen production reaction liquid in the hydrogen production reactor, and then transmits the measured temperature signal to the data acquisition device connected to the data processor. The data acquisition device transmits the collected data to the data processor, and the data is analyzed by the data processor and the real-time temperature is recorded; An electric field generating electrode connected to a DC power converter is sleeved on the periphery of the hydrogen production reactor. The electric field generating electrode applies an external electric field of different strengths to the reaction liquid in the hydrogen production reactor. Under the action of the external electric field, the hydrazine borane molecules are activated, the BH bonds in the molecules are elongated, and the reaction energy barrier of hydrazine borane-catalyzed hydrogen production is reduced; the surface of the electric field generating electrode is coated with insulating glue to prevent electrical breakdown between the two electrodes; At this time, the hydrogen generated by the hydrogen production reaction liquid enters the scrubbing mechanism through the pipeline and the impurity gas is filtered out by the scrubbing mechanism. The filtered hydrogen enters the gas chromatograph and the data acquisition device connected to the data processor through the pipeline respectively. The flow signal of the hydrogen is collected by the flow sensor in the data acquisition device. The purity of the product hydrogen is measured by the gas chromatograph. The flow signal and gas composition signal of the hydrogen are analyzed and processed by the data processor, and recorded and displayed in the computer. The hydrogen entering the data acquisition device enters the hydrogen storage mechanism through the pipeline.

[0007] In the method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, the mass ratio of the hydrazine borane solution to the catalyst is 2:1.

[0008] The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, comprises a thermocouple, a hydrogen production reactor, an electric heater, an electric field generating electrode, a DC power converter, a scrubber, a data collector, a magnetic stirrer, a gas chromatograph and a data processor. The hydrogen production reactor is placed on the magnetic stirrer. A thermocouple and an electric heater are placed in the hydrogen production reactor. The thermocouple is connected to a temperature measurement module in the data collector through a line. The air inlet of the gas flow measurement module in the data collector is connected to the scrubber through a pipeline. The air outlet of the gas flow measurement module is connected to a hydrogen storage mechanism through a pipeline. The electric heater is connected to a DC power converter through a line. The DC power converter is connected to a power supply. The scrubber is connected to a gas chromatograph and a hydrogen production reactor through pipelines respectively. The data collector and the gas chromatograph are connected to a data processor through lines respectively. The data processor analyzes and processes data of the gas chromatograph and the data collector and has display and storage functions. An electric field generating electrode is sleeved on the periphery of the hydrogen production reactor. The electric field generating electrode is connected to a DC power converter through a line.

[0009] In the method for producing hydrogen by hydrolyzing hydrazine borane, a reinforced high hydrogen storage material, a cover plate is provided at the open end of the hydrogen production reactor.

[0010] In the method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, the electric field generating electrode is any one of a flat electrode and an arc-shaped electrode.

[0011] In the method for producing hydrogen by hydrolyzing hydrazine borane, a reinforced high hydrogen storage material, an insulating sleeve or insulating glue is arranged between the inner wall of the electric field generating electrode and the outer wall of the hydrogen production reactor.

[0012] In the method for producing hydrogen by hydrolyzing hydrazine borane, a reinforced high hydrogen storage material, the material of the electric field generating electrode is any one of a copper plate, an aluminum plate or a graphite plate.

[0013] The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, wherein the DC power converter has two power output functions, wherein the DC power output port outputs a DC voltage of 0 to 200V, which is continuously adjustable, to supply power to the electric field generating electrode; wherein the AC power output port outputs AC 220V to supply power to the electric heater.

[0014] In the method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, the scrubber, the data collector and the gas chromatograph are connected via a T-shaped pipe, the first port of the T-shaped pipe is connected to the gas chromatograph, the second port of the T-shaped pipe is connected to the scrubber, the third port of the T-shaped pipe is connected to the data collector, an air valve D is provided on the T-shaped pipe at the position of the gas chromatograph, an air valve B is provided on the T-shaped pipe at the position of the scrubber, and an air valve C is provided on the T-shaped pipe at the position of the data collector.

[0015] In the method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, a gas valve A is provided on the pipeline connecting the gas scrubbing mechanism and the hydrogen production reactor.

[0016] By adopting the above technical solution, the present invention has the following advantages: The method for improving the hydrogen production performance of hydrazine borane hydrolysis by increasing the external electric field not only improves the hydrogen production performance in the traditional hydrazine borane hydrolysis hydrogen production technology, but can also be used in combination with other methods, such as catalyst formulation optimization, pH value modulation of the reaction liquid to alkalinity, etc., to further improve the hydrogen production performance of hydrazine borane hydrolysis. The method has simple steps, can conveniently adjust the hydrogen production rate by increasing the start and stop of the external electric field and the electric field strength, is easy to automatically control, has low cost, and is suitable for large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the principle of applying an electric field to (N2H4BH3) molecules in solutions with different properties in an embodiment of the present invention; Figure 2 The activation effect of hydrazine borane (N2H4BH3) molecules with different properties under the action of an external electric field in the embodiment of the present invention; Figure 3 This is a system diagram for producing hydrogen by hydrolysis of hydrazine borane under the action of an electric field in an embodiment of the present invention; Figure 4 TEM image and EDS elemental surface scanning spectrum of the PtNi / β-SiC catalyst in the embodiment of the present invention; Figure 5 The performance of hydrazine borane hydrolysis to produce hydrogen under different electric fields in the embodiments of the present invention; Figure 6 This is a schematic diagram of the electric field configuration of the reaction container plate in an embodiment of the present invention; Figure 7 A schematic diagram of an arc electric field configuration of a reaction container in an embodiment of the present invention; In the figure: 101, thermocouple; 102, hydrogen production reactor; 103, electric heater; 104, electric field generating electrode; 104-1, flat electrode; 104-2, arc-shaped electrode; 105, DC power converter; 106, gas washing mechanism; 107, data acquisition device; 108, magnetic stirrer; 109, gas chromatograph; 110, data processor; 111-1, gas valve A; 111-2, gas valve B; 111-3, gas valve C; 111-4, gas valve D. DETAILED DESCRIPTION

[0018] The present invention can be explained in more detail by the following examples, but the present invention is not limited to the following examples; First, it should be noted that, when the present invention is implemented, the electric field generating electrode 104 can form an external electric field after being connected to the DC power converter 105 .

[0019] Combined with Figures 1 to 7 The present invention discloses a method for enhancing the production of hydrogen by hydrolysis of hydrazine borane, a high hydrogen storage material. The method applies an external electric field to a hydrogen storage material hydrazine borane catalytic hydrolysis hydrogen production system to activate the BH chemical bonds in hydrazine borane, thereby reducing the energy barrier for the production of hydrogen by hydrolysis in different types of reaction liquids (when implemented, the reaction liquid includes acidic, alkaline and neutral reaction liquids), thereby improving the performance of the production of hydrogen by hydrolysis of hydrazine borane. The specific method is as follows: First, a hydrazine borane solution and a catalyst are mixed according to a set ratio to obtain a hydrogen production reaction liquid. During implementation, the mass ratio of the hydrazine borane solution to the catalyst is 2:1; then the hydrogen production reaction liquid is placed in a hydrogen production reactor 102 in a hydrogen production system and covered with a cover plate, the hydrogen production reactor 102 is placed on a magnetic stirrer 108, a thermocouple 101 in the hydrogen production system is connected to a data acquisition device 107, the thermocouple 101 connected to the data acquisition device 107 is inserted into the hydrogen production reactor 102 and the temperature in the hydrogen production reaction liquid is measured, and the magnetic stirrer 108 stirs the hydrogen production reaction liquid at a uniform speed to make the hydrazine borane hydrolysis reaction proceed evenly; The electric heater 103 connected to the DC power converter 105 heats the reaction liquid, and cooperates with the thermocouple 101 and the temperature control module in the data processor 110 to heat the reaction liquid to a set temperature, so that the reaction temperature of the hydrogen production reaction liquid is controlled at 25°C to 40°C. The thermocouple 101 measures the temperature of the hydrogen production reaction liquid in the hydrogen production reactor 102, and then transmits the measured temperature signal to the data acquisition device 107 connected to the data processor 110. The data acquisition device 107 transmits the collected data to the data processor 110, and the data is analyzed by the data processor 110 and the real-time temperature is recorded; An electric field generating electrode 104 connected to a DC power converter 105 is sleeved on the periphery of the hydrogen production reactor 102. The electric field generating electrode 104 applies an external electric field of different strengths to the reaction liquid in the hydrogen production reactor 102. Under the action of the external electric field, the hydrazine borane molecules are activated, the BH bonds in the molecules are elongated, and the reaction energy barrier of hydrazine borane catalyzed hydrogen production is reduced; the surface of the electric field generating electrode 104 is coated with insulating glue to prevent electrical breakdown between the two electrodes; At this time, the hydrogen generated by the hydrogen production reaction liquid enters the scrubbing mechanism 106 through a pipeline and the impurity gas is filtered out by the scrubbing mechanism 106. The filtered hydrogen enters the gas chromatograph 109 and the data acquisition device 107 connected to the data processor 110 through pipelines respectively. The flow signal of the hydrogen is collected by the flow sensor in the data acquisition device 107. The purity of the product hydrogen is measured by the gas chromatograph 109. The flow signal and the gas composition signal of the hydrogen are analyzed and processed by the data processor 110, and recorded and displayed in the computer. The hydrogen entering the data acquisition device 107 enters the hydrogen storage mechanism through a pipeline.

[0020] When implementing, Figure 3As shown, the hydrogen production system includes a thermocouple 101, a hydrogen production reactor 102, an electric heater 103, an electric field generating electrode 104, a DC power converter 105, a gas scrubber 106, a data collector 107, a magnetic stirrer 108, a gas chromatograph 109 and a data processor 110. The open end of the hydrogen production reactor 102 is provided with a cover plate, the hydrogen production reactor 102 is placed on the magnetic stirrer 108, and the thermocouple 101 and the electric heater 103 are placed in the hydrogen production reactor 102. The thermocouple 101 is connected to the temperature measurement module in the data collector 107 through a line, and the air inlet of the gas flow measurement module in the data collector 107 is connected to the gas scrubber 106 through a pipeline. The gas outlet of the gas flow measurement module is connected to the hydrogen storage mechanism through a pipeline, the electric heater 103 is connected to the DC power converter 105 through a line, the DC power converter 105 is connected to the power supply, the gas scrubbing mechanism 106 is respectively connected to the gas chromatograph 109 and the hydrogen production reactor 102 through pipelines, the data acquisition device 107 and the gas chromatograph 109 are respectively connected to the data processor 110 through lines, the data processor 110 analyzes and processes the data of the gas chromatograph 109 and the data acquisition device 107, and has display and storage functions, and the electric field generating electrode 104 is sleeved on the periphery of the hydrogen production reactor 102, and the electric field generating electrode 104 is connected to the DC power converter 105 through a line.

[0021] Further, if Figure 6 , 7 As shown, the electric field generating electrode 104 is any one of a flat electrode 104 - 1 and an arc-shaped electrode 104 - 2 , and an insulating sleeve or insulating glue is provided between the inner wall of the electric field generating electrode 104 and the outer wall of the hydrogen production reactor 102 .

[0022] Furthermore, the material of the electric field generating electrode 104 is any one of a copper plate, an aluminum plate or a graphite plate.

[0023] Furthermore, the DC power converter 105 has two power output functions, wherein the DC power output port outputs a DC voltage of 0 to 200V, which is continuously adjustable, to supply power to the electric field generating electrode 104 ; wherein the AC power output port outputs AC 220V to supply power to the electric heater 103 .

[0024] Further, if Figure 3As shown, the scrubbing mechanism 106, the data collector 107 and the gas chromatograph 109 are connected via a T-shaped pipe, the first port of the T-shaped pipe is connected to the gas chromatograph 109, the second port of the T-shaped pipe is connected to the scrubbing mechanism 106, the third port of the T-shaped pipe is connected to the data collector 107, a gas valve D111-4 is arranged on the T-shaped pipe at the position of the gas chromatograph 109, a gas valve B111-2 is arranged on the T-shaped pipe at the position of the scrubbing mechanism 106, and a gas valve C111-3 is arranged on the T-shaped pipe at the position of the data collector 107.

[0025] Further, if Figure 3 As shown, a gas valve A111 - 1 is provided on the pipeline connecting the gas scrubbing mechanism 106 and the hydrogen production reactor 102 .

[0026] Further, if Figure 3 As shown, a valve is provided on the pipeline connecting the gas outlet of the gas flow measurement module and the hydrogen storage mechanism.

[0027] The present invention affects the molecular structure and microscopic electron distribution by adding an external electric field (referred to as external electric field), thereby affecting the mechanism of chemical reaction of molecules. Using the CP2K calculation program, an external electric field was added to the adsorption of hydrazine borane on SiC in different solutions. The direction of the electric field was along the negative direction of the z-axis, and the magnitude increased from 0 a.u. to 6×10 -2 au. The CP2K calculation program is an open source first-principles material calculation and simulation software that can study large systems of thousands of atoms and is widely used in simulation calculations of solids, liquids, molecules, periods, materials, crystals and other systems. It was initiated by the Max Planck Research Center as early as 2000 as a project for solid physics research. All codes are written in Fortran2003. Now it has been transferred to the maintenance of the Swiss Federal Institute of Technology (ETH Zurich) and the University of Zurich (Univ. Zurich). It is currently an open source project. Users can download the source code from its official website (www.cp2k.org). The program is not a point of invention protection, so it will not be repeated here.

[0028] Figure 1 Schematic diagram of the effect of external electric field on the BH bond activation of hydrazine borane in solutions with different properties; Figure 2 Describes the electric field strength in solutions of different properties from 0a.u. to 6×10 -2 The effect of au on the activation degree of BH bond in hydrazine borane (bond length change) is shown in Figure 6×10 -2Under the influence of the au electric field, the BH bond lengths in different solutions (water, acidic solution, alkaline solution) were extended from 1.214Å, 1.23Å, 2.06Å to 1.315Å, 1.32Å, and 2.31Å, respectively. Under the action of the external electric field, the BH bonds of hydrazine borane in solutions of different properties were all extended, which indicates that the hydrazine borane molecules are activated under the action of the electric field, which is conducive to the hydrolysis and hydrogen production reaction of hydrazine borane. Among them, in the alkaline solution (OH - ) has the largest extension. The application of an external electric field and the alkalinity of the reaction solution are helpful for the activation of the BH bond in the hydrazine borane molecule.

[0029] The specific embodiments of the present invention are as follows: Example 1, the method for enhancing the production of hydrogen by hydrolysis of hydrazine borane with high hydrogen storage capacity, in specific implementation, a carbon thermal reduction method is used to prepare a β-SiC nanorod precursor, and a liquid phase reduction method is used to reduce the metal salt H2PtCl6 and Ni(NO3)2·6H2O to an active metal PtNi, and the metal salt is loaded onto the surface of the β-SiC nanorod to prepare a loaded catalyst PtNi / β-SiC nanorod catalyst, wherein the molar ratio of metal Pt to Ni is 1:1, and the mass ratio of the active metal component PtNi to β-SiC is 8%. The microstructure and element distribution of the PtNi / β-SiC catalyst are as follows: Figure 4 As shown. Weigh 68 mg of hydrazine borane, prepare a 0.5 mol / L aqueous solution of hydrazine borane (prepared with purified water at pH=7), the mass ratio of catalyst to hydrazine borane in the reaction solution is 1:2, the reaction temperature is controlled at 30°C by a thermocouple and an electric heater, and the generated gas is filtered out of possible impurity gases through a gas scrubber. The hydrazine borane solution undergoes a hydrolysis reaction under the action of the catalyst. When no external electric field is applied (i.e., the electric field generating electrode is not energized), 1 equivalent of hydrazine borane can produce 6 equivalents of gas (N2+H2), and the time taken for the reaction to be complete is 11 minutes and 48 seconds. Figure 5 shown.

[0030] Example 2, the method for enhancing the production of hydrogen by hydrolysis of hydrazine borane with high hydrogen storage capacity, in specific implementation, a carbon thermal reduction method is used to prepare a β-SiC nanorod precursor, and a liquid phase reduction method is used to reduce the metal salt H2PtCl6 and Ni(NO3)2·6H2O to an active metal PtNi, and the metal salt is loaded onto the surface of the β-SiC nanorod to prepare a loaded catalyst PtNi / β-SiC nanorod catalyst, wherein the molar ratio of metal Pt to Ni is 1:1, and the mass ratio of the active metal component PtNi to β-SiC is 8%. The microstructure and element distribution of the PtNi / β-SiC catalyst are as follows: Figure 4As shown. Weigh 68 mg of hydrazine borane, prepare a 0.5 mol / L aqueous solution of hydrazine borane (prepared with purified water at pH=7), the mass ratio of catalyst to hydrazine borane in the reaction solution is 1:2, the reaction temperature is controlled at 30°C by a thermocouple and an electric heater, and the generated gas is filtered out of possible impurity gases through a gas scrubber. The hydrazine borane solution undergoes a hydrolysis reaction under the action of the catalyst. When the DC power generator is set to a voltage of 70V, the external electric field generated is applied to the reaction solution in the reactor through the electrodes. 1 equivalent of hydrazine borane eventually produces 6 equivalents of gas (N2+H2), and the time taken for the reaction to be complete is 10min27s. The reaction rate is increased by 11.5% compared to Example 1. Figure 5 shown.

[0031] Example 3, the method for enhancing the production of hydrogen by hydrolysis of hydrazine borane with high hydrogen storage capacity, in specific implementation, a carbon thermal reduction method is used to prepare a β-SiC nanorod precursor, and a liquid phase reduction method is used to reduce the metal salt H2PtCl6 and Ni(NO3)2·6H2O to an active metal PtNi, and the metal salt is loaded onto the surface of the β-SiC nanorod to prepare a loaded catalyst PtNi / β-SiC nanorod catalyst, wherein the molar ratio of metal Pt to Ni is 1:1, and the mass ratio of the active metal component PtNi to β-SiC is 8%. The microstructure and element distribution of the PtNi / β-SiC catalyst are as follows: Figure 4 As shown. Weigh 68 mg of hydrazine borane, prepare a 0.5 mol / L aqueous solution of hydrazine borane (prepared with purified water at pH=7), the mass ratio of catalyst to hydrazine borane in the reaction solution is 1:2, the reaction temperature is controlled at 30°C by a thermocouple and an electric heater, and the generated gas is filtered out of possible impurity gases through a gas scrubbing mechanism. The hydrazine borane solution undergoes a hydrolysis reaction under the action of the catalyst. When the DC power generator is set to a voltage of 140V, the external electric field generated is applied to the reaction solution in the reactor through the electrodes. 1 equivalent of hydrazine borane ultimately produces 6 equivalents of gas (N2+H2), and the reaction takes 8 minutes and 24 seconds to complete. The reaction rate is increased by 28.8% compared to Example 1. Figure 5 shown.

[0032] Example 4, the method for enhancing the production of hydrogen by hydrolysis of hydrazine borane with high hydrogen storage capacity, in specific implementation, adopts a carbon thermal reduction method to prepare a β-SiC nanorod precursor, uses a liquid phase reduction method to reduce the metal salt H2PtCl6 and Ni(NO3)2·6H2O to an active metal PtNi, and loads it onto the surface of the β-SiC nanorod to prepare a supported catalyst PtNi / β-SiC nanorod catalyst, wherein the molar ratio of metal Pt to Ni is 1:1, the mass ratio of the active metal component PtNi to β-SiC is 8%, and the microstructure and element distribution of the PtNi / β-SiC catalyst are as follows: Figure 4As shown. Weigh 68 mg of hydrazine borane, prepare a 0.5 mol / L aqueous solution of hydrazine borane (prepared with purified water at pH=7), the mass ratio of catalyst to hydrazine borane in the reaction solution is 1:2, the reaction temperature is controlled at 30°C by a thermocouple and an electric heater, and the generated gas is filtered out of possible impurity gases through a gas scrubbing mechanism. The hydrazine borane solution undergoes a hydrolysis reaction under the action of the catalyst. When the DC power generator is set to a voltage of 200V, the external electric field generated is applied to the reaction solution in the reactor through the electrodes. 1 equivalent of hydrazine borane eventually produces 6 equivalents of gas (N2+H2), and the reaction takes 6 minutes and 42 seconds to complete. The reaction rate is increased by 39.8% compared to Example 1. Figure 5 shown.

[0033] The parts not described in detail in this invention are prior art.

[0034] The embodiments selected herein for the purpose of disclosing the invention are currently considered to be suitable, but it should be understood that the invention is intended to include all changes and modifications of the embodiments that fall within the scope of the concept and invention.

Claims

1. A method for enhancing the production of hydrogen by hydrolysis of hydrazine borane, a high hydrogen storage material, characterized in that: The method applies an external electric field in the hydrogen storage material hydrazine borane catalytic hydrolysis hydrogen production system to activate the BH chemical bond in the hydrazine borane, thereby reducing the energy barrier of the hydrolysis hydrogen production in different types of reaction liquids, and improving the performance of the hydrazine borane hydrolysis hydrogen production. The specific method is as follows: First, a hydrazine borane solution and a catalyst are mixed in a set ratio to obtain a hydrogen production reaction liquid, and then the hydrogen production reaction liquid is placed in a hydrogen production reactor (102) in a hydrogen production system and covered with a cover plate, the hydrogen production reactor (102) is placed on a magnetic stirrer (108), a thermocouple (101) in the hydrogen production system is connected to a data acquisition device (107), the thermocouple (101) connected to the data acquisition device (107) is inserted into the hydrogen production reactor (102) and the temperature in the hydrogen production reaction liquid is measured, and the magnetic stirrer (108) stirs the hydrogen production reaction liquid at a uniform speed so that the hydrazine borane hydrolysis reaction proceeds uniformly; The electric heater (103) connected to the DC power converter (105) heats the reaction liquid and cooperates with the thermocouple (101) and the temperature control module in the data processor (110) to heat the reaction liquid to a set temperature, so that the reaction temperature of the hydrogen production reaction liquid is controlled at 25°C to 40°C. The thermocouple (101) measures the temperature of the hydrogen production reaction liquid in the hydrogen production reactor (102), and then transmits the measured temperature signal to the data acquisition device (107) connected to the data processor (110). The data acquisition device (107) transmits the collected data to the data processor (110), and the data is analyzed by the data processor (110) and the real-time temperature is recorded; An electric field generating electrode (104) connected to a DC power converter (105) is sleeved on the periphery of the hydrogen production reactor (102), and the electric field generating electrode (104) applies an external electric field of different strengths to the reaction liquid in the hydrogen production reactor (102). Under the action of the external electric field, the hydrazine borane molecules are activated, the BH bonds in the molecules are elongated, and the reaction energy barrier of hydrazine borane catalyzed hydrogen production is reduced; the surface of the electric field generating electrode (104) is coated with insulating glue to prevent electrical breakdown between the two electrodes; At this time, the hydrogen generated by the hydrogen production reaction liquid enters the scrubbing mechanism (106) through the pipeline and the impurity gas is filtered out by the scrubbing mechanism (106). The filtered hydrogen enters the gas chromatograph (109) and the data acquisition device (107) connected to the data processor (110) through the pipeline respectively. The flow rate signal of the hydrogen is collected by the flow sensor in the data acquisition device (107). The purity of the product hydrogen is measured by the gas chromatograph (109). The flow rate signal and the gas composition signal of the hydrogen are analyzed and processed by the data processor (110), and recorded and displayed in the computer. The hydrogen entering the data acquisition device (107) enters the hydrogen storage mechanism through the pipeline.

2. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 1, is characterized by: The mass ratio of the hydrazine borane solution to the catalyst is 2:

1.

3. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 1, is characterized by: The hydrogen production system comprises a thermocouple (101), a hydrogen production reactor (102), an electric heater (103), an electric field generating electrode (104), a DC power converter (105), a gas scrubber (106), a data acquisition device (107), a magnetic stirrer (108), a gas chromatograph (109) and a data processor (110). The hydrogen production reactor (102) is placed on the magnetic stirrer (108). A thermocouple (101) and an electric heater (103) are placed in the hydrogen production reactor (102). The thermocouple (101) is connected to a temperature measurement module in the data acquisition device (107) via a line. The gas inlet of the gas flow measurement module in the data acquisition device (107) is connected to the gas scrubber (106) via a pipeline. The gas outlet of the block is connected to a hydrogen storage mechanism through a pipeline, the electric heater (103) is connected to a DC power converter (105) through a line, the DC power converter (105) is connected to a power source, the gas scrubbing mechanism (106) is connected to a gas chromatograph (109) and a hydrogen production reactor (102) through pipelines, the data acquisition device (107) and the gas chromatograph (109) are connected to a data processor (110) through lines, the data processor (110) analyzes and processes data from the gas chromatograph (109) and the data acquisition device (107), and has display and storage functions, and an electric field generating electrode (104) is sleeved on the periphery of the hydrogen production reactor (102), and the electric field generating electrode (104) is connected to the DC power converter (105) through a line.

4. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 3, is characterized by: The open end of the hydrogen production reactor (102) is provided with a cover plate.

5. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 3, characterized in that: The electric field generating electrode (104) is any one of a flat plate electrode (104-1) and an arc-shaped electrode (104-2).

6. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 3, characterized in that: An insulating sleeve or insulating glue is provided between the inner wall of the electric field generating electrode (104) and the outer wall of the hydrogen production reactor (102).

7. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 3, characterized in that: The material of the electric field generating electrode (104) is any one of a copper plate, an aluminum plate or a graphite plate.

8. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 3, characterized in that: The DC power converter (105) has two power output functions, wherein the DC power output port outputs a DC voltage of 0 to 200V, which is continuously adjustable, to supply power to the electric field generating electrode (104); and the AC power output port outputs AC power of 220V to supply power to the electric heater (103).

9. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 3, characterized in that: The gas scrubber (106), the data collector (107) and the gas chromatograph (109) are connected via a T-shaped pipe, wherein a first port of the T-shaped pipe is connected to the gas chromatograph (109), a second port of the T-shaped pipe is connected to the gas scrubber (106), and a third port of the T-shaped pipe is connected to the data collector (107). A gas valve D (111-4) is provided on the T-shaped pipe at the position of the gas chromatograph (109), a gas valve B (111-2) is provided on the T-shaped pipe at the position of the gas scrubber (106), and a gas valve C (111-3) is provided on the T-shaped pipe at the position of the data collector (107).

10. The method for producing hydrogen by hydrolyzing hydrazine borane, a high hydrogen storage material, according to claim 3, characterized in that: A gas valve A (111-1) is provided on the pipeline connecting the gas scrubbing mechanism (106) and the hydrogen production reactor (102).

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