Mesoporous Y molecular sieve supported cobalt catalyst and preparation method and application thereof

Abstract

The invention discloses a mesoporous Y molecular sieve supported cobalt catalyst and a preparation method and application thereof. The mesoporous Y molecular sieve supported cobalt catalyst is composed of a carrier and an active component supported on the surface of the carrier, the active component comprises a simple substance, an oxide and a carbide of a cobalt element and oxides of other metal elements; the other metal elements are selected from at least one of alkali metal elements and / or alkaline earth metal elements.

Description

Technical Field

[0001] The present application relates to a mesoporous Y molecular sieve loaded cobalt catalyst and a preparation method and application thereof, and belongs to the field of chemistry and chemical engineering. Background Art

[0002] Aviation kerosene, also known as jet fuel, is mainly used as fuel for jet aircraft engines. Its main components are normal isomerized paraffins and cycloalkanes of C8 to C16, and it also contains a small amount of aromatics and olefins. In recent years, the world's aviation transportation industry has developed rapidly, the number of air transport of personnel and materials has increased year by year, and the consumption of aviation kerosene in the global aviation transportation industry has also shown an upward trend. China's demand for aviation kerosene is also huge. In 2020, the demand for aviation kerosene exceeded 40 million tons, and it is expected that the demand for aviation kerosene will exceed 55 million tons in 2025. However, this process is heavily dependent on petroleum resources and has high requirements for equipment materials. At present, global oil resources are becoming increasingly depleted, and China's oil resources are heavily dependent on imports. The development of alternative technologies for the preparation of aviation kerosene has received widespread attention from countries around the world.

[0003] Synthesis gas is converted into aviation kerosene through Fischer-Tropsch synthesis. Synthesis gas, as a bridge for energy conversion, can convert coal, natural gas and biomass into clean aviation kerosene. Among them, the synthesis gas preparation of aviation kerosene route is considered to be the most promising alternative route for aviation kerosene production with large-scale industrialization potential. Summary of the invention

[0004] According to one aspect of the present application, a mesoporous Y molecular sieve-loaded cobalt catalyst is provided. The catalyst has high activity and high aviation kerosene selectivity in Fischer-Tropsch synthesis. The cobalt particles of the catalyst are uniformly dispersed in the pores of the mesoporous Y molecular sieve, which promotes the synergistic effect of the cobalt metal site and the acidity of the Y molecular sieve, so that the long-chain hydrocarbons generated on the Co site are promptly cracked and isomerized at the acidic site of the molecular sieve, thereby improving the selectivity of the aviation kerosene segment product.

[0005] According to one aspect of the present application, a mesoporous Y molecular sieve-supported cobalt catalyst is provided, wherein the mesoporous Y molecular sieve-supported cobalt catalyst comprises a carrier and an active component supported on the surface of the carrier;

[0006] The active components include cobalt, oxide (cobalt oxide), carbide (cobalt carbide) and oxides of other metal elements;

[0007] The other metal element is selected from at least one of alkali metal elements and / or alkaline earth metal elements;

[0008] The total amount of metal elements in the active component is 100 wt %, wherein the content of cobalt element is 1-70 wt %, and the content of other metal elements is 0.005-30 wt %.

[0009] In the mesoporous Y molecular sieve supported iron catalyst, the loading amount of active components is 1 to 80 wt%.

[0010] The carrier is selected from at least one of USY molecular sieve and SSY molecular sieve;

[0011] The alkali metal element is selected from at least one of Li, Na, K, Rb, and Cs;

[0012] The alkaline earth metal element is selected from at least one of Be, Mg, Ca, Sr and Ba.

[0013] According to another aspect of the present application, a method for preparing the above-mentioned mesoporous Y molecular sieve supported cobalt catalyst is provided, comprising the following steps:

[0014] (1) mixing a carrier, a precipitant and an aqueous solution containing a cobalt source, precipitating, filtering and washing until the pH value of the filtrate is in the range of 6 to 8, and washing to obtain a catalyst precursor;

[0015] (2) Mixing the catalyst precursor with an aqueous solution containing other metal element sources, drying, and calcining to obtain the mesoporous Y molecular sieve-loaded cobalt catalyst.

[0016] The cobalt source is selected from at least one of cobalt nitrate, cobalt sulfate and cobalt chloride;

[0017] In the aqueous solution containing the cobalt source, the concentration of the cobalt source is 1 to 80 wt %;

[0018] The precipitant is selected from at least one of aqueous ammonia, aqueous sodium carbonate solution, aqueous potassium carbonate solution, and aqueous ammonium carbonate solution;

[0019] The concentration of the precipitant is 1-80 wt %.

[0020] The precipitation temperature is 10-95°C;

[0021] The precipitation time is 0.5 to 100 hours.

[0022] The pH of the precipitation is 7-11.

[0023] The other metal element sources are selected from water-soluble metal salts of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, and Ba;

[0024] In the aqueous solution containing other metal element sources, the concentration of other metal element sources is 0.005-30wt%;

[0025] The drying temperature is 5 to 150° C.

[0026] The drying time is 1 to 100 hours;

[0027] The calcination temperature is 150-1000°C;

[0028] The calcination time is 0.5 to 50 hours;

[0029] The calcination atmosphere is air atmosphere, oxygen-containing atmosphere, nitrogen atmosphere or inert gas atmosphere.

[0030] According to another aspect of the present application, a CO / CO 2 The method for preparing aviation kerosene by hydrogenation comprises the following steps:

[0031] Hydrogen and CO and / or CO 2 The raw materials are contacted with a catalyst to react and obtain aviation kerosene;

[0032] Wherein, the catalyst is the above-mentioned catalyst.

[0033] The reaction temperature is 150-450°C;

[0034] The reaction pressure is 0.1-8Mpa;

[0035] The hydrogen gas contains CO and / or CO 2 The volume ratio of the raw materials is 0.2 to 8;

[0036] The hydrogen and CO and / or CO 2 The total GHSV of the raw materials is 200~20000h -1 .

[0037] The catalyst is reduced;

[0038] The reduction temperature is 200-650°C;

[0039] The reduction time is 5 to 20 hours;

[0040] The reducing atmosphere is a hydrogen atmosphere and / or a carbon monoxide atmosphere.

[0041] The beneficial effects of this application include:

[0042] (1) The mesoporous Y molecular sieve supported cobalt catalyst provided in the present application has both high activity and high selectivity in Fischer-Tropsch synthesis.

[0043] (2) The mesoporous Y molecular sieve loaded cobalt catalyst provided in the present application effectively solves the problem of low selectivity of Fischer-Tropsch synthesis of aviation kerosene, and provides an effective way to increase the yield of Fischer-Tropsch synthesis of aviation kerosene.

[0044] (3) The present application provides a method for preparing a mesoporous Y molecular sieve loaded with cobalt catalyst, which can make the cobalt particles evenly dispersed in the pores of the mesoporous Y molecular sieve, promote the synergistic effect between the cobalt metal site and the acidity of the Y molecular sieve, and make the long-chain hydrocarbons generated on the Co site cracked and isomerized in time at the acidic site of the molecular sieve, thereby improving the selectivity of the aviation kerosene segment product. DETAILED DESCRIPTION

[0045] The reaction products were analyzed by online gas chromatography. The gas chromatograph was Agilent's 7890A, and the detectors were TCD and FID. TCD analysis used a packed column TDX-01 (2m×2mm), and the carrier gas was high-purity helium; FID analysis used a capillary column HP-PLOT / Q (30m×0.32mm). The column temperature was programmed: the temperature was increased from 40°C to 150°C at a rate of 20°C / min, maintained for 5 minutes, and then increased to 240°C at a rate of 30°C / min, and maintained for 5 minutes.

[0046] Example 1 Preparation of catalyst samples

[0047] 5.5g of mesoporous Y molecular sieve and 14.4g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonia water with a mass percentage concentration of 25%. Solution I and the precipitant were continuously mixed in a parallel flow manner, and the mixing ratio was controlled to keep the pH of the solution at 7. The temperature during the coprecipitation process was kept at 20°C, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at a temperature of 30°C for 10h, filtered, and washed with deionized water until neutral. 190g of a 1wt% potassium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at a temperature of 50°C for 12h, and then calcined at a temperature of 500°C in an air atmosphere for 10h. The desired catalyst was obtained, which was recorded as sample C1 # .

[0048] Example 2 Preparation of catalyst samples

[0049] 5.5g of mesoporous Y molecular sieve and 25.0g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was sodium carbonate with a mass percentage concentration of 30%. Solution I and the precipitant were continuously mixed in a positive addition manner. The mixing ratio was controlled to keep the solution pH at 8. The temperature was kept at 50°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, the mixture was aged at 10°C for 100h, filtered, and washed with deionized water until neutral. 36g of 5wt% lithium nitrate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 120°C for 5h, and then calcined at 600°C in an air atmosphere for 6h. The desired catalyst was obtained, which was recorded as sample C2 # .

[0050] Example 3 Preparation of catalyst samples

[0051] 5.5g of mesoporous Y molecular sieve and 40.8g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was potassium carbonate with a mass percentage concentration of 10%. Solution I and the precipitant were continuously mixed in a parallel flow manner. The mixing ratio was controlled to keep the pH of the solution at 11. The temperature was kept at 80°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at 90°C for 3h, filtered, and washed with deionized water until neutral. 7g of 10wt% sodium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 110°C for 60h, and then calcined at 600°C in an air atmosphere for 20h. The desired catalyst was obtained, which was recorded as sample C3 # .

[0052] Example 4 Preparation of catalyst samples

[0053] 5.5g of mesoporous Y molecular sieve and 8.0g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonia water with a mass percentage concentration of 25%. Solution I and the precipitant were continuously mixed by back-addition, and the mixing ratio was controlled to keep the pH of the solution at 10. The temperature was kept at 70°C during the co-precipitation process, and continuous stirring was performed during the precipitation process. After the co-precipitation was completed, it was aged at 30°C for 10h, filtered, and washed with deionized water until neutral. 1g of 20wt% lithium nitrate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 20°C for 100h, and then calcined at 400°C in an air atmosphere for 15h. The desired catalyst was obtained, which was recorded as sample C4 # .

[0054] Example 5 Preparation of catalyst samples

[0055] 5.5g of mesoporous Y molecular sieve and 0.28g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonium carbonate with a mass percentage concentration of 15%. Solution I and the precipitant were continuously mixed in a positive addition manner, and the mixing ratio was controlled to keep the pH of the solution at 8. The temperature was kept at 60°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at 6°C for 90h, filtered, and washed with deionized water until neutral. 5g of 15wt% sodium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 50°C for 12h, and then calcined at 300°C in an air atmosphere for 16h. The desired catalyst was obtained, which was recorded as sample C5 # .

[0056] Example 6 Preparation of Catalyst Samples

[0057] 5.5g of mesoporous Y molecular sieve and 30.0g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonia water with a mass percentage concentration of 25%. Solution I and the precipitant were continuously mixed in a parallel flow manner, and the mixing ratio was controlled to keep the pH of the solution at 9. The temperature was kept at 75°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at 60°C for 30h, filtered, and washed with deionized water until neutral. 6g of 10wt% magnesium nitrate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 100°C for 25h, and then calcined at 600°C in an air atmosphere for 12h. The desired catalyst was obtained, which was recorded as sample C6 # .

[0058] Example 7 Preparation of Catalyst Samples

[0059] 5.5g of mesoporous Y molecular sieve and 25.2g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was potassium carbonate with a mass percentage concentration of 30%. Solution I and the precipitant were continuously mixed in a parallel flow manner. The mixing ratio was controlled to keep the solution pH at 7. The temperature was maintained at 65°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at 50°C for 40h, filtered, and washed with deionized water until neutral. 120g of 3wt% sodium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 80°C for 70h, and then calcined at 400°C in an air atmosphere for 20h. The desired catalyst was obtained, which was recorded as sample C7 # .

[0060] Example 8 Preparation of Catalyst Samples

[0061] 5.5g of mesoporous Y molecular sieve and 6.0g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was potassium carbonate with a mass percentage concentration of 10%. Solution I and the precipitant were continuously mixed by back-addition, and the mixing ratio was controlled to keep the solution pH at 10. The temperature was kept at 35°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at 80°C for 60h, filtered, and washed with deionized water until neutral. 90g of 4wt% potassium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 90°C for 60h, and then calcined at 300°C in an air atmosphere for 40h. The desired catalyst was obtained, which was recorded as sample C8 # .

[0062] Example 9 Preparation of Catalyst Samples

[0063] 5.5g of mesoporous Y molecular sieve and 38.1g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonia water with a mass percentage concentration of 25%. Solution I and the precipitant were continuously mixed in a parallel flow manner. The mixing ratio was controlled to keep the pH of the solution at 10. The temperature was kept at 65°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at 90°C for 70h, filtered, and washed with deionized water until neutral. 50g of cesium carbonate solution (solution II) with a concentration of 5wt% was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 100°C for 6h, and then calcined at 400°C in an air atmosphere for 20h. The desired catalyst was obtained, which was recorded as sample C9. # .

[0064] Example 10 Preparation of catalyst samples

[0065] 5.5g of mesoporous Y molecular sieve and 19.0g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was sodium carbonate with a mass percentage concentration of 40%. Solution I and the precipitant were continuously mixed in a parallel flow manner, and the mixing ratio was controlled to keep the solution pH at 7. The temperature during the coprecipitation process was kept at 20°C, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at a temperature of 110°C for 40h, filtered, and washed with deionized water until neutral. 60g of a 3wt% potassium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at a temperature of 50°C for 12h, and then calcined at a temperature of 200°C in an air atmosphere for 45h. The desired catalyst was obtained, which was recorded as sample C10 # .

[0066] Example 11 Preparation of catalyst samples

[0067] 5.5g of mesoporous Y molecular sieve and 11.2g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonia water with a mass percentage concentration of 25%. Solution I and the precipitant were continuously mixed in a positive addition manner. The mixing ratio was controlled to keep the solution pH at 8. The temperature was kept at 35°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, the mixture was aged at 45°C for 16h, filtered, and washed with deionized water until neutral. 250g of 0.05wt% calcium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 30°C for 60h, and then calcined at 900°C in an air atmosphere for 2h. The desired catalyst was obtained, which was recorded as sample C11 # .

[0068] Example 12 Preparation of catalyst samples

[0069] 5.5g of mesoporous Y molecular sieve and 28.1g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was potassium carbonate with a mass percentage concentration of 50%. Solution I and the precipitant were continuously mixed in a parallel flow manner. The mixing ratio was controlled to keep the solution pH at 9. The temperature during the coprecipitation process was maintained at 60°C, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, the mixture was aged at 65°C for 20h, filtered, and washed with deionized water until neutral. 6g of 8wt% magnesium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 70°C for 80h, and then calcined at 900°C in an air atmosphere for 1h. The desired catalyst was obtained and recorded as sample C12 # .

[0070] Example 13 Preparation of Catalyst Samples

[0071] 5.5g of mesoporous Y molecular sieve and 36.2g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was sodium carbonate with a mass percentage concentration of 30%. Solution I and the precipitant were continuously mixed in a parallel flow manner. The mixing ratio was controlled to keep the solution pH at 7. The temperature during the coprecipitation process was maintained at 50°C, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, the mixture was aged at 70°C for 2h, filtered, and washed with deionized water until neutral. 50g of 6wt% lithium nitrate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 130°C for 90h, and then calcined at 300°C in an argon atmosphere for 40h. The desired catalyst was obtained and recorded as sample C13 # .

[0072] Example 14 Preparation of Catalyst Samples

[0073] 5.5g of mesoporous Y molecular sieve and 6.5g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonia water with a mass percentage concentration of 25%. Solution I and the precipitant were continuously mixed in a parallel flow manner. The mixing ratio was controlled to keep the solution pH at 9. The temperature was kept at 20°C during the coprecipitation process, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at 80°C for 2h, filtered, and washed with deionized water until neutral. 45g of 4wt% sodium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at 80°C for 80h, and then calcined at 700°C in an air atmosphere for 4h. The desired catalyst was obtained, which was recorded as sample C14 # .

[0074] Example 15 Preparation of catalyst samples

[0075] 5.5g of mesoporous Y molecular sieve and 25.6g of cobalt nitrate hexahydrate were dissolved in 200ml of deionized water to obtain solution I. The precipitant was ammonium carbonate with a mass percentage concentration of 30%. Solution I and the precipitant were continuously mixed in a parallel flow manner. The mixing ratio was controlled to keep the pH of the solution at 11. The temperature during the coprecipitation process was maintained at 40°C, and continuous stirring was performed during the precipitation process. After the coprecipitation was completed, it was aged at a temperature of 50°C for 10h, filtered, and washed with deionized water until neutral. 68g of a 7wt% potassium carbonate solution (solution II) was added to the filter cake and re-slurried to obtain mixture I. Mixture I was dried at a temperature of 70°C for 24h, and then calcined at a temperature of 800°C in a nitrogen atmosphere for 40h. The desired catalyst was obtained, which was recorded as sample C15 # .

[0076] Example 16 Sample C1 # ~ Sample C15 # Test on the reaction performance of preparing aviation kerosene by Fischer-Tropsch synthesis

[0077] 2g of sample C1 # Place the catalyst in a reaction tube and combine it with a liner, quartz wool and quartz sand to keep the catalyst in a constant temperature zone. Place the reaction tube in a fixed bed device so that the thermocouple is located in the catalyst bed. 2 The reduction treatment was carried out under the following conditions: reduction temperature of 350°C, normal pressure reduction, and reduction time of 6h. The reduced catalyst was used for the synthesis gas to prepare light olefins reaction under the following reaction conditions: 350°C, reaction pressure of 4MPa, and raw gas volume ratio of H 2 / CO=0.5,GHSV=1000h -1 At the same time, the valve box temperature, pipeline insulation and chromatographic pipeline insulation were set to 150°C. The reaction product was detected by online chromatography every 30 minutes. The reaction time was 24 hours, and the liquid product was collected for analysis.

[0078] Other C2 # —C15 # The catalyst is used in a similar process to produce aviation kerosene by Fischer-Tropsch synthesis. The specific reduction and reaction conditions are shown in Table 1, and the reaction results are shown in Table 2.

[0079] Table 1 Reduction and reaction conditions of Fischer-Tropsch synthesis of aviation kerosene

[0080]

[0082] Table 2 Fischer-Tropsch synthesis reaction results for aviation kerosene

[0083]

[0084] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A mesoporous Y molecular sieve supported cobalt catalyst, characterized in that: The mesoporous Y molecular sieve supported cobalt catalyst is composed of a carrier and an active component supported on the surface of the carrier; The active components include simple substance, oxide, carbide of cobalt element and oxides of other metal elements; The other metal element is selected from at least one of alkali metal elements and / or alkaline earth metal elements; The total amount of metal elements in the active component is 100 wt %, wherein the content of cobalt element is 1-70 wt %, and the content of other metal elements is 0.005-30 wt %. In the mesoporous Y molecular sieve supported iron catalyst, the loading amount of active components is 1 to 80 wt%.

2. The mesoporous Y molecular sieve supported cobalt catalyst according to claim 1, characterized in that: The carrier is selected from at least one of USY molecular sieve and SSY molecular sieve; The alkali metal element is selected from at least one of Li, Na, K, Rb, and Cs; The alkaline earth metal element is selected from at least one of Be, Mg, Ca, Sr and Ba.

3. A method for preparing a mesoporous Y molecular sieve supported cobalt catalyst according to any one of claims 1 or 2, characterized in that: The following steps are involved: (1) mixing a carrier, a precipitant and an aqueous solution containing a cobalt source, precipitating, filtering and washing to obtain a catalyst precursor; (2) Mixing the catalyst precursor with an aqueous solution containing other metal element sources, drying, and calcining to obtain the mesoporous Y molecular sieve-loaded cobalt catalyst.

4. The preparation method according to claim 3, characterized in that: The cobalt source is selected from at least one of cobalt nitrate, cobalt sulfate and cobalt chloride; In the aqueous solution containing the cobalt source, the concentration of the cobalt source is 1 to 80 wt %; The precipitant is selected from at least one of aqueous ammonia, aqueous sodium carbonate solution, aqueous potassium carbonate solution, and aqueous ammonium carbonate solution; The concentration of the precipitant is 1-80 wt %.

5. The preparation method according to claim 3, characterized in that: The precipitation temperature is 10-95°C; The precipitation time is 0.5 to 100 hours. The pH of the precipitation is 7-11.

6. The preparation method according to claim 3, characterized in that: The other metal element sources are selected from water-soluble metal salts of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, and Ba; In the aqueous solution containing other metal element sources, the concentration of other metal element sources is 0.005-30 wt %.

7. The preparation method according to claim 3, characterized in that: The drying temperature is 5 to 150° C. The drying time is 1 to 100 hours; The calcination temperature is 150-1000°C; The calcination time is 0.5 to 50 hours; The calcination atmosphere is air atmosphere, oxygen-containing atmosphere, nitrogen atmosphere or inert gas atmosphere.

8. A method for preparing aviation kerosene by hydrogenation of CO / CO2, It is characterized in that The following steps are involved: The hydrogen and the raw material containing CO and / or CO2 are contacted with a catalyst to react and obtain aviation kerosene; Wherein, the catalyst is the catalyst according to any one of claims 1 or 2.

9. The method according to claim 8, characterized in that The reaction temperature is 150-450°C; The reaction pressure is 0.1-8Mpa; The volume ratio of the hydrogen to the raw material containing CO and / or CO2 is 0.2-8; the total GHSV of the hydrogen and the raw material containing CO and / or CO2 is 200-20000h -1 .

10. The method according to claim 8, characterized in that The catalyst is reduced; The reduction temperature is 200-650°C; The reduction time is 5 to 20 hours; The reducing atmosphere is a hydrogen atmosphere and / or a carbon monoxide atmosphere.

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