Preparation method of catalyst for producing biological aviation kerosene by using high-carbon alcohol as raw material and adopting slurry reactor

Abstract

The invention discloses a preparation method of a catalyst for producing biological aviation kerosene by using high alcohol as a raw material and adopting a slurry reactor. The preparation method comprises the following steps: (1) respectively dissolving a nickel source and an organic amine source in methanol; slowly dripping the methanol solution of the organic amine source into the methanol solution of the nickel source under stirring; after dropwise adding, heating and carrying out reflux reaction for 30-90 minutes; filtering while hot, washing with methanol, collecting solid, and drying in vacuum to obtain the organic nickel catalyst. (2) respectively acidifying aqueous solutions of an organic amine source and a molybdenum source with diluted hydrochloric acid until the pH is 2-4; slowly dripping the acidified organic amine source into the acidified molybdenum source under stirring; after dropwise adding, stirring and reacting for 30-90 minutes; filtering, washing, collecting solids, and drying in vacuum to obtain the organic molybdenum catalyst. And (3) compounding the organic nickel catalyst and the organic molybdenum catalyst according to the mass ratio of 1: (1-10) to obtain the catalyst. The catalyst is simple in preparation process and low in energy consumption, and has high catalytic activity and high hydrodeoxygenation selectivity when being used for producing biological aviation kerosene by using high-carbon alcohol as a raw material and adopting a slurry reactor.

Description

Technical Field

[0001] This invention belongs to the field of catalysis technology, and in particular relates to a method for preparing a catalyst for the production of bio-jet fuel using higher alcohols as raw materials in a slurry bed. Background Technology

[0002] Aviation kerosene is currently the most in-demand liquid fuel globally, with my country's annual civilian aviation fuel consumption exceeding 38 million tons. Air transport is one of the modes of transportation with the highest carbon emissions per unit distance, and jet engines currently using aviation kerosene still dominate the market. Therefore, the pressure to decarbonize and reduce carbon emissions in the aviation fuel sector is particularly prominent. Consequently, developing renewable alternative fuels, especially sustainable aviation fuel (SAF) that can be directly blended with petroleum-based aviation kerosene, has become a key research focus in the energy and environmental fields.

[0003] Biomass is a renewable carbon source with zero or negative carbon properties. Its conversion product, ethanol, can be synthesized into higher alcohols in one step through self-coupling and cross-coupling between intermediate product molecules. This catalytic process is commonly known as Guerbet coupling. Meanwhile, in industrial production practice, related technologies already utilize the Guerbet process to produce C... 8+ High carbon fatty alcohols, of which C8–C 16 High-carbon fatty alcohols have simple structures, high hydrogen content, and low oxygen content, possessing ideal carbon-hydrogen ratios and energy densities. They are ideal precursors for producing alkane components for aviation fuels. Through hydrodeoxygenation (HDO) reactions, fatty alcohols can be converted in one step into normal and isoalkanes that meet the requirements of aviation fuels.

[0004] Currently, the hydrodeoxygenation reaction in the biofuel synthesis route mainly employs fixed-bed, suspended-bed, or slurry-bed reactors. CN114480024A discloses a method for preparing liquid fuel from fatty alcohols via oils, using an acidic support (selected from one or more of ZSM-35, ZSM-5, ZSM-22, ZSM-23, ZSM-48, SAPO-31, SAPO-11, Y, and β molecular sieves) to load a metallic active component (selected from one or more of Pt, Pd, Au, Ag, Cu, Ni, Fe, Zn, Mn, and Sn) to catalyze the hydrodeoxygenation of fatty alcohols in a fixed-bed reactor, converting them into C6–C20 alkane liquid fuels. Traditional fixed-bed reaction processes are simple in structure and have mature equipment, making them suitable for continuous production. However, due to problems such as limited mass transfer, uneven reaction heat, and easy coking, they have significant shortcomings when processing high-viscosity liquid-phase feedstocks such as higher alcohols. Meanwhile, supported catalysts involve a complex and energy-intensive preparation process involving impregnation, drying, molding, and high-temperature calcination. Furthermore, pre-sulfurization activation before use further increases operational complexity and safety risks. More importantly, this type of catalytic system is sensitive to moisture in hydrodeoxygenation reactions; the generated water can cause catalyst structural collapse and a significant decrease in activity, thus shortening its lifespan. In addition, coking and sintering are prone to occur during the reaction, leading to decreased activity and carbon chain breakage, resulting in a high proportion of light alkanes in the product and low carbon atom utilization.

[0005] In comparison, slurry bed and suspended bed reaction systems exhibit better mass and heat transfer performance, effectively avoiding localized overheating and deactivation problems, making them particularly suitable for the liquid-phase hydrogenation conversion of higher alcohol feedstocks. In slurry bed processes, the catalyst is dispersed as fine particles in the reaction medium, allowing for sufficient contact with the feedstock and significantly improving reaction rate and conversion. Suspended bed reactors, on the other hand, combine good fluidization with controllable residence time, achieving high conversion efficiency and selectivity at lower temperatures and pressures, and exhibiting strong water molecule tolerance. Therefore, developing efficient and stable catalysts suitable for slurry bed or suspended bed systems has become an important direction for improving the production efficiency of biofuel.

[0006] CN119391455A discloses a process for the pretreatment of low-quality biomass oils in a suspended bed using an oil-soluble catalyst. The oil-soluble catalyst is prepared by synthesizing a bimetallic or trimetallic composite oxide precursor in a water-ethanol-toluene mixed solution via a solvothermal process, followed by modification with organic ion ligands in methanol. The preparation of this catalyst requires a complex solvothermal crystallization process, and the preparation process is relatively cumbersome, resulting in high production costs. Furthermore, the proportion of active metals needs to be controlled at the source.

[0007] CN117797842A discloses a method for preparing a precursor by in-situ carbonization of glucose in a hydrothermal environment at 160-220℃ using molybdenum source, soluble cobalt salt and glucose as raw materials, and in-situ loading of cobalt / molybdenum dual active components. The precursor is carbonized at 400-900℃ to obtain a catalyst for the hydrogenolysis of higher alcohols to higher alkanes, and the catalyst is used to catalyze the hydrogenolysis reaction of higher alcohols in a slurry bed reactor. This method has the following drawbacks: First, the catalyst preparation requires not only a complex high-temperature hydrothermal reaction but also high-temperature carbonization, resulting in high energy consumption during catalyst production. Second, in the application of the catalyst in a slurry bed reactor for catalytic hydrogenolysis of higher alcohols, the mass ratio of catalyst:higher alcohol:solvent is 0.30:0.25:4.75, indicating that the amounts of both catalyst and solvent are very large, making industrial implementation difficult. Furthermore, the conversion rate in actual implementation is only 86.18%-96.61%, and the selectivity for hydrodeoxygenation is only 85.84%-93.65%, leading to high product production costs. Summary of the Invention

[0008] To address the aforementioned technical problems, the present invention aims to provide a catalyst preparation method for producing bio-jet fuel from higher alcohols using a slurry bed. This catalyst preparation process is simple and energy-efficient. When the prepared high-activity metal-content organonitrile catalyst and organomolybdenum catalyst are combined and used in the industrial production of bio-jet fuel from higher alcohols, they exhibit both high catalytic activity and high hydrodeoxygenation selectivity, i.e., high conversion rate of higher alcohols and high selectivity for alkanes with the same number of carbon atoms.

[0009] To achieve the above objectives, the present invention provides a method for preparing a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed, comprising the following steps:

[0010] (1) Preparation of organonitrile catalyst: Dissolve nickel source and organic amine source in methanol respectively; under stirring conditions, slowly add the methanol solution of organic amine source to the methanol solution of nickel source; after the addition is complete, heat the mixed solution and reflux for 30-90 minutes; filter while hot, wash with methanol, collect the solid and dry under vacuum to obtain organonitrile catalyst;

[0011] (2) Preparation of organic molybdenum catalyst: The organic amine source was acidified to pH 2-4 with dilute hydrochloric acid; the molybdenum source was dissolved in water and acidified to pH 2-4 with dilute hydrochloric acid; under stirring conditions, the acidified organic amine source was slowly added dropwise to the acidified molybdenum source; after the addition was completed, the reaction was stirred for 30-90 minutes; the mixture was filtered, washed, the solid was collected and dried under vacuum to obtain the organic molybdenum catalyst.

[0012] (3) By compounding the organic nickel catalyst and the organic molybdenum catalyst at a mass ratio of 1:1-10, a catalyst for producing bio-jet fuel using high carbon alcohols as raw materials in a slurry bed can be obtained.

[0013] The nickel source is one of nickel nitrate, nickel sulfate, or nickel chloride.

[0014] The organic amine source is one of 4,4'-diaminodicyclohexylmethane and 4,4'-diaminodiphenylmethane.

[0015] The molybdenum source is either ammonium molybdate or sodium molybdate.

[0016] The molar ratio of the nickel source to the organic amine source is 1:1-2.

[0017] The molar ratio of the nickel source to the organic amine source is 1:1-1.2.

[0018] The molar ratio of molybdenum to organic amine source in the molybdenum source is 1:1-2.

[0019] The molar ratio of molybdenum to organic amine source in the molybdenum source is 1:1-1.2.

[0020] The organomolybdenum catalyst and organonitrile catalyst are compounded at a mass ratio of 1:1-10.

[0021] The organomolybdenum catalyst and organonitrile catalyst are compounded at a mass ratio of 1:1-4.

[0022] The higher alcohols are straight-chain alcohols with ≥8 carbon atoms.

[0023] The higher alcohol has 8-18 carbon atoms.

[0024] The steps for efficiently catalyzing the hydrogenation and deoxygenation of higher alcohols to produce biofuel using the catalyst prepared in this invention are as follows:

[0025] The prepared catalyst was used in a slurry bed reactor to catalyze the production of bio-jet fuel from higher alcohols. The mass ratio of organomolybdenum catalyst, organonitrile catalyst, CS2, and higher alcohols was 1:1-4:2-5:1000-5000. The reaction temperature was 300-360℃, the reaction pressure was 7-9 MPa, and the reaction time was 4-6 hours. After centrifugation, the liquid product was separated from the catalyst and analyzed by gas chromatography.

[0026] The present invention relates to a catalyst preparation method for the slurry-bed production of bio-jet kerosene from higher alcohols. This method prepares a catalyst based on a heterogeneous catalytic system composed of an organonitrile catalyst and an organomolybdenum catalyst, and its beneficial effects are as follows:

[0027] 1. The catalyst has a simple preparation process, low energy consumption, strong water resistance, and does not need to be supported on an inorganic carrier. It can be stably dispersed in a slurry bed or suspension bed reaction medium, avoiding the complex impregnation-high temperature calcination-pre-sulfurization or solvent / hydrothermal crystallization and high temperature carbonization process. At the same time, it has a high content of active metals nickel and molybdenum, and the active metals are in-situ sulfided into active metal sulfides in the reaction system.

[0028] 2. In the hydrodeoxygenation reaction of fatty alcohols, this catalyst has a highly efficient selective activation ability for C–O bonds, can effectively suppress the C–C bond breaking side reaction, achieves a conversion rate of over 99% for high-carbon straight-chain alcohols, a selectivity of over 93% for same-carbon straight-chain alkanes, and high carbon atom utilization.

[0029] 3. Compared with the traditional supported Ni–Mo system, the catalyst prepared by this invention shows significant advantages in terms of reaction activity, selectivity, water resistance, carbon atom utilization rate and preparation energy consumption, providing a new technical route for the green and efficient preparation of bio-jet fuel from high carbon alcohols. Detailed Implementation

[0030] The following detailed description, in conjunction with specific embodiments and comparative examples, further illustrates the catalyst preparation method of the present invention for producing bio-jet fuel from higher alcohols using a slurry bed. This detailed description should not be construed as a limitation of the present invention, but rather as a more detailed description of certain aspects, characteristics, and embodiments of the present invention.

[0031] Unless otherwise specified, all raw materials used in the following examples can be purchased commercially.

[0032] Example 1

[0033] 0.1 mol of nickel nitrate and 0.2 mol of 4,4'-diaminodicyclohexylmethane were dissolved in 100 ml of methanol to form homogeneous solutions. Under stirring, the methanol solution of 4,4'-diaminodicyclohexylmethane was added dropwise to the methanol solution of nickel nitrate. After the addition was complete, the mixture was heated and refluxed for 30 minutes. The mixture was filtered while hot, washed with methanol, and the solid was collected and dried under vacuum to obtain the organonitrile catalyst.

[0034] 0.2 mol of 4,4'-diaminodicyclohexylmethane was acidified to pH 2-4 with dilute hydrochloric acid; 0.0143 mol of ammonium molybdate was dissolved in water and acidified to pH 2-4 with dilute hydrochloric acid; under stirring, the acidified 4,4'-diaminodicyclohexylmethane was slowly added dropwise to the acidified ammonium molybdate; after the addition was complete, the reaction was stirred for another 30 minutes; the mixture was filtered, washed, and the solid was collected and dried under vacuum to obtain the organomolybdenum catalyst.

[0035] By compounding an organonitrile catalyst and an organomolybdenum catalyst in a mass ratio of 1:1, a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed is obtained.

[0036] Example 2

[0037] 0.1 mol of nickel nitrate and 0.15 mol of 4,4'-diaminodicyclohexylmethane were dissolved in 100 ml of methanol to form homogeneous solutions. Under stirring, the methanol solution of 4,4'-diaminodicyclohexylmethane was added dropwise to the methanol solution of nickel nitrate. After the addition was complete, the mixture was heated and refluxed for 45 minutes. The mixture was filtered while hot, washed with methanol, and the solid was collected and dried under vacuum to obtain the organonitrile catalyst.

[0038] 0.15 mol of 4,4'-diaminodicyclohexylmethane was acidified to pH 2-4 with dilute hydrochloric acid; 0.0143 mol of ammonium molybdate was dissolved in water and acidified to pH 2-4 with dilute hydrochloric acid; under stirring, the acidified 4,4'-diaminodicyclohexylmethane was slowly added dropwise to the acidified ammonium molybdate; after the addition was complete, the reaction was stirred for another 45 minutes; the mixture was filtered, washed, and the solid was collected and dried under vacuum to obtain the organomolybdenum catalyst.

[0039] By compounding an organomolybdenum catalyst and an organonitrogen catalyst at a mass ratio of 1:2, a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed is obtained.

[0040] Example 3

[0041] 0.1 mol of nickel nitrate and 0.1 mol of 4,4'-diaminodicyclohexylmethane were dissolved in 100 ml of methanol to form homogeneous solutions. Under stirring, the methanol solution of 4,4'-diaminodicyclohexylmethane was added dropwise to the methanol solution of nickel nitrate. After the addition was complete, the mixture was heated and refluxed for 90 minutes. The mixture was filtered while hot, washed with methanol, and the solid was collected and dried under vacuum to obtain the organonitrile catalyst.

[0042] 0.1 mol of 4,4'-diaminodicyclohexylmethane was acidified to pH 2-4 with dilute hydrochloric acid; 0.0143 mol of ammonium molybdate was dissolved in water and acidified to pH 2-4 with dilute hydrochloric acid; under stirring, the acidified 4,4'-diaminodicyclohexylmethane was slowly added dropwise to the acidified ammonium molybdate; after the addition was complete, the reaction was stirred for another 90 minutes; the mixture was filtered, washed, and the solid was collected and dried under vacuum to obtain the organomolybdenum catalyst.

[0043] By compounding an organomolybdenum catalyst and an organonitrogen catalyst at a mass ratio of 1:3, a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed is obtained.

[0044] Example 4

[0045] 0.1 mol of nickel nitrate and 0.12 mol of 4,4'-diaminodicyclohexylmethane were dissolved in 100 ml of methanol to form homogeneous solutions. Under stirring, the methanol solution of 4,4'-diaminodicyclohexylmethane was added dropwise to the methanol solution of nickel nitrate. After the addition was complete, the mixture was heated and refluxed for 60 minutes. The mixture was filtered while hot, washed with methanol, and the solid was collected and dried under vacuum to obtain the organonitrile catalyst.

[0046] 0.12 mol of 4,4'-diaminodicyclohexylmethane was acidified to pH 2-4 with dilute hydrochloric acid; 0.0143 mol of ammonium molybdate was dissolved in water and acidified to pH 2-4 with dilute hydrochloric acid; under stirring, the acidified 4,4'-diaminodicyclohexylmethane was slowly added dropwise to the acidified ammonium molybdate; after the addition was complete, the reaction was stirred for another 60 minutes; the mixture was filtered, washed, and the solid was collected and dried under vacuum to obtain the organomolybdenum catalyst.

[0047] By compounding an organomolybdenum catalyst and an organonitrogen catalyst at a mass ratio of 1:4, a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed is obtained.

[0048] Example 5

[0049] Compared to Example 4, the difference is that the nickel source in this example is nickel sulfate.

[0050] Example 6

[0051] Compared to Example 4, the difference is that the nickel source in this example is nickel chloride.

[0052] Example 7

[0053] Compared to Example 4, the difference is that the molybdenum source in this example is sodium molybdate, and 0.0143 mol ammonium molybdate is replaced with 0.1 mol sodium molybdate.

[0054] Example 8

[0055] Compared to Example 5, the difference is that the molybdenum source in this example is sodium molybdate, and 0.0143 mol ammonium molybdate is replaced with 0.1 mol sodium molybdate.

[0056] Example 9

[0057] Compared to Example 6, the difference is that the molybdenum source in this example is sodium molybdate, and 0.0143 mol ammonium molybdate is replaced with 0.1 mol sodium molybdate.

[0058] Example 10

[0059] Compared to Example 4, the difference is that the organic amine source in this example is 4,4'-diaminodiphenylmethane.

[0060] Example 11

[0061] Compared to Example 5, the difference is that the organic amine source in this example is 4,4'-diaminodiphenylmethane.

[0062] Example 12

[0063] The difference from Example 6 is that the organic amine source in this example is 4,4'-diaminodiphenylmethane.

[0064] Example 13

[0065] The difference from Example 7 is that the organic amine source in this example is 4,4'-diaminodiphenylmethane.

[0066] Example 14

[0067] Compared to Example 8, the difference is that the organic amine source in this example is 4,4'-diaminodiphenylmethane.

[0068] Example 15

[0069] Compared to Example 9, the difference is that the organic amine source in this example is 4,4'-diaminodiphenylmethane.

[0070] Comparative Example 1

[0071] The organonitrile catalyst prepared in Example 4 was used as a catalyst for the production of biojet fuel from higher alcohols using a slurry bed.

[0072] Comparative Example 2

[0073] The organic molybdenum catalyst prepared in Example 4 was used as a catalyst for the production of bio-jet fuel from higher alcohols using a slurry bed.

[0074] Table 1. Molybdenum and nickel content and compounding mass ratio in organomolybdenum and nickel catalysts in Examples 1-15

[0075] Example molybdenum content (%) in organic molybdenum catalysts Nickel content % in organonickel catalysts Mass ratio of organomolybdenum catalyst to organonitrile catalyst Example 1 25.91 21.51 1:1 Example 2 25.91 21.50 1:2 Example 3 25.00 21.01 1:3 Example 4 25.92 21.50 1:4 Example 5 25.91 21.49 1:4 Example 6 25.91 21.49 1:4 Example 7 25.90 21.50 1:4 Example 8 25.90 21.49 1:4 Example 9 25.91 21.49 1:4 Example 10 25.89 20.94 1:4 Example 11 25.90 20.92 1:4 Example 12 25.88 20.94 1:4 Example 13 25.90 20.95 1:4 Example 14 25.88 20.93 1:4 Example 15 25.89 20.94 1:4 Comparative Example 1 21.50 Comparative Example 2 25.92

[0076] As shown in Table 1, the molybdenum and nickel sources have almost no effect on the molybdenum and nickel content in the catalyst. However, when 4,4'-diaminodiphenylmethane is used as the organic amine source, the nickel content in the organonitrile catalyst decreases. This may be because the lone pair electrons on the amino nitrogen in 4,4'-diaminodiphenylmethane form a large π bond with the benzene ring, weakening its coordination ability. Furthermore, when the molar ratio of organic amine source to molybdenum and nickel is greater than 1.2:1, the nickel and molybdenum content in the catalyst is almost the same. Therefore, considering the cost of the molybdenum and nickel sources and the amount of hydrochloric acid used in the preparation process, the catalyst prepared in Example 4 has the lowest preparation cost and is the optimal example.

[0077] The catalysts prepared in Example 4 and Comparative Examples 1-2 were used to catalyze the production of bio-jet fuel from higher alcohols in a slurry bed reactor. The material ratio of Example 4 was 1:4:5:2500 (organomolybdenum catalyst:organonitrile catalyst:CS2:higher alcohol), the material ratio of Comparative Example 1 was 1:1:500 (organonitrile catalyst:CS2:higher alcohol), and the material ratio of Comparative Example 2 was 1:1:500 (organomolybdenum catalyst:CS2:higher alcohol). The reaction temperature was 360℃, the reaction pressure was 8MPa, and the reaction time was 5 hours. The experimental results are shown in Table 2.

[0078] Table 2. Experimental Results of Catalytic Production of Bio-jet Fuel from Higher Alcohols

[0079] Examples and Comparative Examples Types of higher alcohols Higher alcohol conversion rate % Same-carbon straight-chain alkane selectivity % Example 4 Octyl alcohol 99.85 93.46 Example 4 dodecanol 99.85 95.62 Example 4 Tetradecyl alcohol 99.91 93.10 Comparative Example 1 dodecanol 10.26 97.18 Comparative Example 2 dodecanol 99.87 74.37

[0080] Comparative Examples 1 and 2 show that neither organomolybdenum catalyst nor organonitrile catalyst alone can achieve both high conversion and high selectivity simultaneously. When a catalyst combining organomolybdenum and organonitrile catalysts is used to catalyze the production of bio-jet fuel from higher alcohols, the conversion rate of higher alcohols is greater than 99%, and the selectivity for straight-chain alkanes of the same carbon is greater than 93%. This may be due to a synergistic effect between the active metals nickel and molybdenum, which improves the hydrodeoxygenation activity and the selectivity for straight-chain alkanes of the same carbon in the combined catalyst.

[0081] The above description is only a part of the specific embodiments of the present invention. The protection scope of the present invention is not limited to these specific embodiments. For those skilled in the art, the present invention can have various modifications and variations. Any modifications or equivalent substitutions or improvements made within the technical concept and principle of this application should fall within the protection scope of the present invention.

Claims

1. A method for preparing a catalyst for producing bio-jet fuel using a slurry bed with a high carbon alcohol as a raw material, characterized by, The method comprises the following steps: (1) preparation of the organic nickel catalyst: dissolve a nickel source and an organic amine source in methanol respectively; slowly drop the methanol solution of the organic amine source into the methanol solution of the nickel source under stirring; after the dropping is completed, heat and reflux the mixed solution for 30-90 minutes; filter while hot, wash with methanol, collect the solid and vacuum dry, to obtain the organic nickel catalyst; (2) preparation of the organic molybdenum catalyst: acidify the organic amine source with dilute hydrochloric acid to pH 2-4; dissolve a molybdenum source in water and acidify with dilute hydrochloric acid to pH 2-4; slowly drop the acidified organic amine source into the acidified molybdenum source under stirring; after the dropping is completed, continue to stir for 30-90 minutes; filter, wash, collect the solid and vacuum dry, to obtain the organic molybdenum catalyst; (3) compounding the organic nickel catalyst and the organic molybdenum catalyst at a mass ratio of 1:1-10 to obtain the catalyst for producing bio-jet fuel from a high carbon alcohol by a slurry bed.

2. The method for preparing the catalyst for producing bio-jet fuel using a slurry bed with higher alcohols as raw materials according to claim 1, characterized in that, The nickel source is one of nickel nitrate, nickel sulfate and nickel chloride; the organic amine source is one of 4,4'-diaminodicyclohexyl methane and 4,4'-diaminodiphenyl methane; and the molybdenum source is one of ammonium molybdate and sodium molybdate.

3. The method for preparing a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed, as described in claim 1, is characterized in that... The molar ratio of the nickel source to the organic amine source is 1:1-2.

4. The method for preparing a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed, as described in claim 3, is characterized in that... The molar ratio of the nickel source to the organic amine source is 1:1-1.

2.

5. The method for preparing the catalyst for producing bio-jet fuel using a slurry bed with higher alcohols as raw materials according to claim 1, characterized in that, The molar ratio of molybdenum in the molybdenum source to the organic amine source is 1:1-2.

6. The method for preparing a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed, as described in claim 5, is characterized in that... The molar ratio of molybdenum in the molybdenum source to the organic amine source is 1:1-1.

2.

7. The method for preparing the catalyst for producing bio-jet fuel using a slurry bed with higher alcohols as raw materials according to claim 1, characterized in that, The organic molybdenum catalyst and the organic nickel catalyst are compounded at a mass ratio of 1:1-10.

8. The method for preparing a catalyst for producing bio-jet fuel from higher alcohols using a slurry bed, as described in claim 7, is characterized in that, The organic molybdenum catalyst and the organic nickel catalyst are compounded at a mass ratio of 1:1-4.

9. The method for producing a catalyst for producing bio-jet fuel using a slurry bed with a high alcohol as a raw material according to any one of claims 1 to 8, characterized by, The high carbon alcohol is a linear alcohol with ≥8 carbon atoms.

10. The method for preparing the catalyst for producing bio-jet fuel using a slurry bed with higher alcohols as raw materials according to claim 9, characterized in that, The high carbon alcohol has 8-18 carbon atoms.