Cracking agent for cracking water vapor to produce hydrogen and preparation method thereof
By preparing a honeycomb-shaped pyrolysis agent composed of an aluminum-based alloy catalyst, the problem of small contact area between water vapor and the pyrolysis agent was solved, which improved hydrogen production efficiency, reduced costs, and met the stability requirements of the process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHAANXI ZHIXIN CHUANGJIA TECHNOLOGY CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-07-03
AI Technical Summary
In existing hydrogen production technologies using cracked steam, the small contact area between steam and the cracking agent makes it difficult for steam to penetrate the interior of the cracking agent block, resulting in low efficiency.
The cracking agent, composed of aluminum-based alloy, catalyst, additives and coagulant, is prepared using a specific method to form a honeycomb structure, thereby increasing the contact area and reaction efficiency between water vapor and catalytically active components.
It improves the reactivity and efficiency of hydrogen production from cracked steam, reduces the cost of hydrogen production, and meets the stability requirements of the process.
Smart Images
Figure CN122321951A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of new energy, specifically to the field of hydrogen production and manufacturing technology, and specifically relates to a cracking agent and preparation method for producing hydrogen from cracked water vapor. Background Technology
[0002] Common methods for producing hydrogen include water electrolysis, coal-based hydrogen production, and hydrogen produced as a byproduct of coking and petrochemical processes. Water electrolysis is limited by the cost of 55 kWh / kg. Metal catalyst cracking of water vapor to produce hydrogen is a good technical route, especially suitable for situations with waste heat and abundant water vapor, allowing for energy recovery and utilization.
[0003] CN 115010086 A, a cracking agent for hydrogen production, its preparation method, and a method for using it to produce hydrogen, wherein the cracking agent is produced by compression molding; CN 115818568 A, a cracking agent for hydrogen production by cracking water vapor, its preparation, use, and reactivation method, wherein the cracking agent is produced by compression molding at 4-5 atmospheres; CN 117466246 A, a cracking agent for hydrogen production and its preparation method, wherein the cracking agent is produced by high-temperature calcination at 1000°C-1600°C; the cracking agents obtained by the above methods have the following disadvantages: 1. The contact area between water vapor and the cracking agent is small; 2. Water vapor does not easily penetrate the interior of the cracking agent block; 3. The pyrolysis agent is not efficient. Summary of the Invention
[0004] This invention provides a cracking agent for hydrogen production from cracked water vapor and its preparation method to overcome the shortcomings of existing technologies. The specific solution is as follows: A cracking agent for producing hydrogen from cracked water vapor mainly consists of an aluminum-based alloy, a catalyst, an additive, a carrier, and a solidifying agent; The aluminum-based alloy comprises the following components by mass fraction: 70-80 wt% aluminum, 5-15 wt% magnesium, 5-10 wt% zinc, 5-10 wt% manganese, 4-8 wt% tin and 5-10 wt% iron. The catalyst is Ni3Sn or Ni3Fe; The auxiliary agent includes any two of sodium tripolyphosphate, sodium chloride, potassium chloride, stannous chloride, and ferrocene methyl group derivatives; The carrier is one of silica sol, alumina sol, molecular sieve, hydrous kaolin, or bentonite, with silica sol and hydrous kaolin being preferred. The coagulant is one of sodium chloride, potassium chloride, or stannous chloride.
[0005] The amount of catalyst added is 20-40 wt% of the mass of the aluminum-based alloy.
[0006] The amount of the additive added is 15-30 wt% of the mass of the aluminum-based alloy.
[0007] The amount of carrier added is 30-50 wt% of the dry basis weight of the carrier as a percentage of the total mass of the aluminum-based alloy and the catalyst. The carrier is one of the following: silica sol, alumina sol, molecular sieve, hydrous kaolin, or bentonite suspension with a solid content of 25-60 wt%.
[0008] The present invention provides a method for preparing a hydrogen production cracking agent, comprising the following methods: 1. Applicable to solutions using silica sol or alumina sol as the carrier, the preparation method is as follows: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, mix them, then weigh out the corresponding mass fractions of additives and add them to the aluminum-based alloy and mix them evenly. Ball mill the mixture under inert gas protection, and then pass it through a 200-325 mesh sieve to obtain aluminum-based alloy powder A. Step 2: Mix the obtained aluminum-based alloy powder A with the corresponding mass fraction of catalyst to form powder B; Step 3: Weigh the appropriate mass of carrier liquid, and add powder B while stirring until powder B is evenly dispersed in the carrier liquid; Step 4: Weigh an appropriate amount of coagulant and prepare a coagulant aqueous solution; immerse the dry sponge in the coagulant aqueous solution, and wring it out after it is completely soaked. Step 5: Immerse the sponge obtained in Step 4 into the dispersion prepared in Step 3 and quickly allow the sponge to absorb the dispersion. Take out the sponge and place it on a special rack. Spray the coagulant aqueous solution onto the surface of the sponge. After the surface solidifies, send it into an oven and dry it at 80-180 degrees Celsius to form a sponge cake containing powder B. Step Six: Calcine the sponge cake obtained in Step Five at 300°C-550°C to obtain a honeycomb-shaped, breathable cracking agent for hydrogen production from cracked water vapor.
[0009] 2. For schemes where the carrier is silica sol, alumina sol, hydrous kaolin, or molecular sieve, the preparation method is as follows: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, mix them, then weigh out the corresponding mass fractions of additives and add them to the aluminum-based alloy and mix them evenly. Ball mill the mixture under inert gas protection, and then pass it through a 200-325 mesh sieve to obtain aluminum-based alloy powder A. Step 2: Mix the obtained aluminum-based alloy powder A with the corresponding mass fraction of catalyst to form powder B; Step 3: Weigh the appropriate mass of carrier liquid, and add powder B while stirring until powder B is evenly dispersed in the carrier liquid, obtaining liquid C. Step 4: Weigh an appropriate amount of coagulant, prepare a coagulant aqueous solution, and add the coagulant aqueous solution to liquid C while stirring. After the mixture loses its fluidity, send it to an oven and dry it at 80-550 degrees to obtain the cracking agent for hydrogen production from cracked water vapor.
[0010] 3. For schemes using water-rich kaolin, molecular sieves, or bentonite as carriers, the preparation method is as follows: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, mix them, then weigh out the corresponding mass fractions of additives and add them to the aluminum-based alloy and mix them evenly. Ball mill the mixture under inert gas protection, and then pass it through a 200-325 mesh sieve to obtain aluminum-based alloy powder A. Step 2: Mix the obtained aluminum-based alloy powder A with the corresponding mass fraction of catalyst to form powder B; Step 3: Weigh the appropriate mass of carrier liquid, and add powder B while stirring until powder B is evenly dispersed in the carrier liquid to obtain liquid C; Step 4: Weigh an appropriate amount of coagulant and prepare a coagulant aqueous solution; immerse the dry sponge in the coagulant aqueous solution, and wring it out after it is completely soaked. Step 5: While stirring, add an appropriate amount of coagulant aqueous solution to liquid C to obtain a dispersion D with thixotropic properties. Use the sponge obtained in step 4, which is soaked in coagulant aqueous solution, to adsorb the dispersion D, and then put it into an oven to dry at 80-180 degrees Celsius to form a sponge cake containing powder B. Step Six: Calcine the sponge cake obtained in Step Five at 300°C-550°C to obtain a honeycomb-shaped, breathable cracking agent for hydrogen production from cracked water vapor.
[0011] 4. Applicable to solutions using silica sol or alumina sol as the carrier, the preparation method is as follows: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, and then weigh out the corresponding mass fractions of additives and carrier liquid. Then add the carrier liquid, additives and aluminum alloy matrix to a high-speed ball mill for grinding. The ground slurry is then passed through a 150-325 mesh sieve to obtain slurry A. Step 2: Mix the obtained slurry A with the corresponding mass fraction of catalyst to form cracking agent slurry B; Step 3: Weigh an appropriate amount of coagulant and prepare a coagulant aqueous solution; immerse the dry sponge in the coagulant aqueous solution, and wring it out after it is completely soaked. Step 4: Use the sponge impregnated with coagulant aqueous solution obtained in Step 3 to adsorb pyrolysis agent slurry B, and then put it into an oven to dry at 80-180 degrees Celsius to form a sponge cake containing pyrolysis agent slurry B. Step 5: Calcine the sponge cake obtained in Step 4 at 300°C-550°C to obtain a honeycomb-shaped, breathable cracking agent for hydrogen production from cracked water vapor.
[0012] The aforementioned cracking agent for hydrogen production from cracked water vapor employs one of three protective atmospheres: an oxygen-containing atmosphere, an oxygen-free atmosphere, or an inert gas atmosphere, respectively, in the drying and calcination processes.
[0013] The aforementioned cracking agent for hydrogen production from cracked water vapor has a honeycomb-like, permeable structure, which facilitates contact between water vapor and catalytically active components, thereby improving reaction efficiency.
[0014] Compared with the prior art, the present invention can achieve the following technical effects: 1. This invention provides a cracking agent for hydrogen production by cracking water vapor, which has high reactivity and low hydrogen production cost; 2. The present invention provides a method for preparing a cracking agent for hydrogen production from cracked water vapor. The cracking agent prepared by this method has a honeycomb structure with good air permeability, and the active components of the cracking agent and water vapor react in full contact, effectively improving the hydrogen production efficiency. 3. The present invention provides a method for preparing a cracking agent for hydrogen production from cracked steam. The cracking agent prepared by this method can be manufactured according to the shape requirements of the cracking generator, fully meeting the process requirements and improving the stability of the hydrogen production process.
[0015] Attached image description: Figure 1 This is a diagram showing the appearance of the pyrolysis agent of this invention. Detailed Implementation
[0016] The embodiments of the present invention will be described in detail below with reference to the examples. The following examples are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention.
[0017] Example 1: The aluminum alloy matrix is formulated with 72 wt% aluminum, 9 wt% magnesium, 6 wt% zinc, 6 wt% manganese, 2 wt% tin and 5 wt% iron; the catalyst is Ni3Fe, and the mass ratio of the catalyst to the aluminum alloy matrix is 3:7.
[0018] The additives selected are sodium tripolyphosphate and dimethyl ferrocene, wherein sodium tripolyphosphate accounts for 4 wt% of the aluminum alloy matrix and dimethyl ferrocene accounts for 20 wt% of the aluminum alloy matrix.
[0019] The carrier is a silica sol with a solid content of 35%, and the ratio of the mass of the silica sol to the sum of the masses of the aluminum alloy matrix, additives and catalyst is 1.2:1.
[0020] Its preparation method is as follows: First, the aluminum alloy matrix material and additives are mixed and ball-milled in a high-speed ball mill under inert gas protection. The ball-milled powder is then passed through a 200-325 mesh sieve. The sieved aluminum alloy matrix and Ni3Fe catalyst are mixed to form cracking agent powder. The cracking agent powder is then added to the weighed carrier liquid and stirred to form a cracking agent slurry. Prepare a 20% sodium chloride aqueous solution, immerse the dry sponge in the 20% sodium chloride solution, remove the sponge, press it dry, and then absorb the cracking agent slurry; Sponges with adsorbed pyrolysis agent slurry are placed on a rack, sprayed with 20% sodium chloride aqueous solution, and dried in an oven after the surface solidifies to obtain sponge cake containing pyrolysis agent. The oven temperature is 120°C. The dried sponge cake was calcined at 450°C, and the sponge was burned off, yielding a sponge-like, breathable pyrolysis agent product.
[0021] Example 2: The aluminum alloy matrix is formulated with 72 wt% aluminum, 9 wt% magnesium, 6 wt% zinc, 6 wt% manganese, 2 wt% tin and 5 wt% iron; the catalyst is Ni3Fe, and the mass ratio of the catalyst to the aluminum alloy matrix is 3:7.
[0022] The additives selected are sodium tripolyphosphate and dimethyl ferrocene, wherein sodium tripolyphosphate accounts for 4 wt% of the aluminum alloy matrix and dimethyl ferrocene accounts for 20 wt% of the aluminum alloy matrix.
[0023] The carrier is a silica sol with a solid content of 35%, and the ratio of the mass of the silica sol to the sum of the masses of the aluminum alloy matrix, additives and catalyst is 1.2:1.
[0024] Its preparation method is as follows: First, the carrier liquid, aluminum alloy matrix material, and additives are sequentially added to a rapid ball mill jar for wet ball milling. The slurry after ball milling is then passed through a 200-325 mesh sieve. The sieved aluminum alloy matrix slurry is then mixed with the Ni3Fe catalyst to form a cracking agent slurry. Prepare a 20% sodium chloride aqueous solution, immerse the dry sponge in the 20% sodium chloride solution, remove the sponge, press it dry, and then absorb the cracking agent slurry; Sponges with adsorbed pyrolysis agent slurry are placed on a rack, sprayed with 20% sodium chloride aqueous solution, and dried in an oven after the surface solidifies to obtain sponge cake containing pyrolysis agent. The oven temperature is 120°C. The dried sponge cake was calcined at 450°C, and the sponge was burned off, yielding a sponge-like, breathable pyrolysis agent product.
[0025] Example 3: The aluminum alloy matrix is formulated with 72 wt% aluminum, 9 wt% magnesium, 6 wt% zinc, 6 wt% manganese, 2 wt% tin and 5 wt% iron; the catalyst is Ni3Fe, and the mass ratio of the catalyst to the aluminum alloy matrix is 3:7.
[0026] The additives selected are sodium tripolyphosphate and dimethyl ferrocene, wherein sodium tripolyphosphate accounts for 4 wt% of the aluminum alloy matrix and dimethyl ferrocene accounts for 20 wt% of the aluminum alloy matrix.
[0027] The carrier is a silica sol with a solid content of 35%, and the ratio of the mass of the silica sol to the sum of the masses of the aluminum alloy matrix, additives and catalyst is 1.2:1.
[0028] Its preparation method is as follows: First, the aluminum alloy matrix material and additives are mixed and ball-milled in a high-speed ball mill under inert gas protection. The ball-milled powder is then passed through a 200-325 mesh sieve. The sieved aluminum alloy matrix and Ni3Fe catalyst are mixed to form cracking agent powder. The cracking agent powder is then added to the weighed carrier liquid and stirred to form a cracking agent slurry. Prepare a 20 wt% sodium chloride aqueous solution of the cracking agent slurry and add it to the cracking agent slurry while stirring. After the cracking agent slurry solidifies, pour it into a mold and send it into an oven together with the mold to dry. The oven temperature is 120°C-150°C. The dried pyrolysis agent can be used alone or after calcination at 400°C-500°C.
[0029] Example 4: The aluminum alloy matrix is formulated with 72 wt% aluminum, 9 wt% magnesium, 6 wt% zinc, 6 wt% manganese, 2 wt% tin and 5 wt% iron; the catalyst is Ni3Fe, and the mass ratio of the catalyst to the aluminum alloy matrix is 3:7.
[0030] The additives selected are sodium tripolyphosphate and dimethyl ferrocene, wherein sodium tripolyphosphate accounts for 4 wt% of the aluminum alloy matrix and dimethyl ferrocene accounts for 20 wt% of the aluminum alloy matrix.
[0031] The carrier is 40% hydrated kaolin with a solid content. The ratio of the mass of the hydrated kaolin liquid to the sum of the masses of the aluminum alloy matrix, additives and catalyst is 1:1.
[0032] Its preparation method is as follows: First, the aluminum alloy matrix material and additives are mixed and ball-milled in a high-speed ball mill under inert gas protection. The ball-milled powder is then passed through a 200-325 mesh sieve. The sieved aluminum alloy matrix and the Ni3Fe catalyst are then mixed to form a cracking agent powder. Water-rich kaolin was mixed with water and a dispersant in a high-speed ball mill to form a water-rich kaolin slurry with a solid content of 40%. The slurry was then passed through a 120-mesh sieve. Cracking agent powder was added at a mass ratio of 1:1 and stirred to form a cracking agent slurry. Prepare a 20% sodium chloride aqueous solution, immerse the dry sponge in the 20% sodium chloride solution, remove the sponge, press it dry, and then absorb the cracking agent slurry; Sponges with adsorbed pyrolysis agent slurry are placed on a rack, sprayed with 20% sodium chloride aqueous solution, and dried in an oven after the surface solidifies to obtain sponge cake containing pyrolysis agent. The oven temperature is 120°C. The dried sponge cake was calcined at 450°C, and the sponge was burned off, yielding a sponge-like, breathable pyrolysis agent product.
[0033] Example 5: The aluminum alloy matrix is formulated with 72 wt% aluminum, 9 wt% magnesium, 6 wt% zinc, 6 wt% manganese, 2 wt% tin and 5 wt% iron; the catalyst is Ni3Fe, and the mass ratio of the catalyst to the aluminum alloy matrix is 3:7.
[0034] The additives selected are sodium tripolyphosphate and dimethyl ferrocene, wherein sodium tripolyphosphate accounts for 4 wt% of the aluminum alloy matrix and dimethyl ferrocene accounts for 20 wt% of the aluminum alloy matrix.
[0035] The carrier is 4A molecular sieve with a solid content of 40%, and the ratio of the mass of 4A molecular sieve liquid to the sum of the masses of aluminum alloy matrix, additives and catalyst is 1:1.
[0036] Its preparation method is as follows: First, the aluminum alloy matrix material and additives are mixed and ball-milled in a high-speed ball mill under inert gas protection. The ball-milled powder is then passed through a 200-325 mesh sieve. The sieved aluminum alloy matrix and the Ni3Fe catalyst are then mixed to form a cracking agent powder. 4A molecular sieve was mixed with water and dispersant to form a 40% solids content water-rich kaolin slurry, which was then passed through a 150-mesh sieve. Cracking agent powder was added at a mass ratio of 1:1 and mixed to form a cracking agent slurry. Prepare a 20% sodium chloride aqueous solution, immerse the dry sponge in the 20% sodium chloride solution, remove the sponge, press it dry, and then absorb the cracking agent slurry; Sponges with adsorbed pyrolysis agent slurry are placed on a rack, sprayed with 20% sodium chloride aqueous solution, and dried in an oven after the surface solidifies to obtain sponge cake containing pyrolysis agent. The oven temperature is 120°C. The dried sponge cake was calcined at 450°C, and the sponge was burned off, yielding a sponge-like, breathable pyrolysis agent product.
Claims
1. A cracking agent for hydrogen production by cracking water vapor, characterized in that, The cracking agent is mainly composed of aluminum-based alloy, catalyst, additive, carrier and coagulant; The aluminum-based alloy comprises the following components by mass fraction: 70-80 wt% aluminum, 5-15 wt% magnesium, 5-10 wt% zinc, 5-10 wt% manganese, 4-8 wt% tin and 5-10 wt% iron; The catalyst is Ni3Sn or Ni3Fe; The auxiliary agent includes any two of sodium tripolyphosphate, sodium chloride, potassium chloride, stannous chloride, and ferrocene methyl group derivatives; The carrier is one of silica sol, alumina sol, molecular sieve, hydrous kaolin, or bentonite, with silica sol being preferred; The coagulant is one of sodium chloride, potassium chloride, or stannous chloride.
2. The cracking agent for hydrogen production from cracked water vapor according to claim 1, characterized in that, The amount of catalyst added is 20-40 wt% of the mass of the aluminum-based alloy.
3. The cracking agent for hydrogen production from cracked water vapor according to claim 1, characterized in that, The amount of the additive added is 15-30 wt% of the mass of the aluminum-based alloy.
4. The cracking agent for hydrogen production from cracked water vapor according to claim 1, characterized in that, The amount of carrier added is 30-50 wt% of the dry basis weight of the carrier as a percentage of the total mass of the aluminum-based alloy and the catalyst. The carrier is one of the following: silica sol, alumina sol, molecular sieve, hydrous kaolin, or bentonite suspension with a solid content of 25-60 wt%.
5. The cracking agent for hydrogen production from cracked water vapor according to claims 1-4, characterized in that, Includes the following steps: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, mix them, then weigh out the corresponding mass fractions of additives and add them to the aluminum-based alloy and mix them evenly. Ball mill the mixture under inert gas protection, and then pass it through a 200-325 mesh sieve to obtain aluminum-based alloy powder A. Step 2: Mix the obtained aluminum-based alloy powder A with the corresponding mass fraction of catalyst to form powder B; Step 3: Weigh the appropriate mass of carrier liquid, and add powder B while stirring until powder B is evenly dispersed in the carrier liquid; Step 4: Weigh an appropriate amount of coagulant and prepare a coagulant aqueous solution; immerse the dry sponge in the coagulant aqueous solution, and wring it out after it is completely soaked. Step 5: Immerse the sponge obtained in Step 4 into the dispersion prepared in Step 3 and quickly allow the sponge to absorb the dispersion. Take out the sponge and place it on a special rack. Spray the coagulant aqueous solution onto the surface of the sponge. After the surface solidifies, send it into an oven and dry it at 80-180 degrees Celsius to form a sponge cake containing powder B. Step Six: Calcine the sponge cake obtained in Step Five at 300°C-550°C to obtain a honeycomb-shaped, breathable cracking agent for hydrogen production from cracked water vapor.
6. The cracking agent for hydrogen production from cracked water vapor according to claims 1-4, characterized in that, Includes the following steps: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, mix them, then weigh out the corresponding mass fractions of additives and add them to the aluminum-based alloy and mix them evenly. Ball mill the mixture under inert gas protection, and then pass it through a 200-325 mesh sieve to obtain aluminum-based alloy powder A. Step 2: Mix the obtained aluminum-based alloy powder A with the corresponding mass fraction of catalyst to form powder B; Step 3: Weigh the appropriate mass of carrier liquid, and add powder B while stirring until powder B is evenly dispersed in the carrier liquid, obtaining liquid C. Step 4: Weigh an appropriate amount of coagulant, prepare a coagulant aqueous solution, and add the coagulant aqueous solution to liquid C while stirring. After the mixture loses its fluidity, send it to an oven and dry it at 80-550 degrees to obtain the cracking agent for hydrogen production from cracked water vapor.
7. The cracking agent for hydrogen production from cracked water vapor according to claims 1-4, characterized in that, Includes the following steps: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, mix them, then weigh out the corresponding mass fractions of additives and add them to the aluminum-based alloy and mix them evenly. Ball mill the mixture under inert gas protection, and then pass it through a 200-325 mesh sieve to obtain aluminum-based alloy powder A. Step 2: Mix the obtained aluminum-based alloy powder A with the corresponding mass fraction of catalyst to form powder B; Step 3: Weigh the appropriate mass of carrier liquid, and add powder B while stirring until powder B is evenly dispersed in the carrier liquid to obtain liquid C; Step 4: Weigh an appropriate amount of coagulant and prepare a coagulant aqueous solution; immerse the dry sponge in the coagulant aqueous solution, and wring it out after it is completely soaked. Step 5: While stirring, add an appropriate amount of coagulant aqueous solution to liquid C to obtain a dispersion D with thixotropic properties. Use the sponge obtained in step 4, which is soaked in coagulant aqueous solution, to adsorb the dispersion D, and then put it into an oven to dry at 80-180 degrees Celsius to form a sponge cake containing powder B. Step Six: Calcine the sponge cake obtained in Step Five at 300°C-550°C to obtain a honeycomb-shaped, breathable cracking agent for hydrogen production from cracked water vapor.
8. The cracking agent for hydrogen production from cracked water vapor according to claims 1-4, characterized in that, Includes the following steps: Step 1: Weigh out aluminum, magnesium, zinc, manganese, tin and iron according to the corresponding mass fractions of aluminum-based alloy, and then weigh out the corresponding mass fractions of additives and carrier liquid. Then add the carrier liquid, additives and aluminum alloy matrix to a high-speed ball mill for grinding. The ground slurry is then passed through a 150-325 mesh sieve to obtain slurry A. Step 2: Mix the obtained slurry A with the corresponding mass fraction of catalyst to form cracking agent slurry B; Step 3: Weigh an appropriate amount of coagulant and prepare a coagulant aqueous solution; immerse the dry sponge in the coagulant aqueous solution, and wring it out after it is completely soaked. Step 4: Use the sponge impregnated with coagulant aqueous solution obtained in Step 3 to adsorb pyrolysis agent slurry B, and then put it into an oven to dry at 80-180 degrees Celsius to form a sponge cake containing pyrolysis agent slurry B. Step 5: Calcine the sponge cake obtained in Step 4 at 300°C-550°C to obtain a honeycomb-shaped, breathable cracking agent for hydrogen production from cracked water vapor.
9. The cracking agent for hydrogen production from cracked water vapor according to claims 5-8, characterized in that, The drying and calcination processes respectively employ one of an oxygen-containing atmosphere, an oxygen-free atmosphere, or an inert gas protective atmosphere.