A nickel-rhenium bimetallic catalyst, a preparation method and application thereof
By using a nickel-rhenium alloy catalyst formed by calcination in an aerobic environment and a nickel-rhenium bimetallic catalyst supported on rod-shaped cerium dioxide, the problems of high cost and harsh reaction conditions of precious metal catalysts have been solved, and the efficient preparation of 1,5-pentanediol has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI LEXIN KANGNING BIOTECHNOLOGY CO LTD
- Filing Date
- 2023-11-23
- Publication Date
- 2026-04-10
AI Technical Summary
In existing technologies, noble metal-based catalysts are expensive, have low catalytic efficiency, and require harsh reaction conditions, making it difficult to efficiently prepare 1,5-pentanediol, especially in the ring-opening reaction of tetrahydrofurfuryl alcohol, where the yield is insufficient and uneconomical.
A nickel-rhenium bimetallic catalyst using rod-shaped cerium dioxide as a support is used to catalyze the hydrogenation and ring-opening of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol by calcination in an aerobic environment to form a nickel-rhenium alloy. The reaction conditions are mild and the catalyst can be recycled.
A 94% tetrahydrofurfuryl alcohol conversion and 100% 1,5-pentanediol selectivity were achieved under mild conditions. The catalyst exhibits good stability and is recyclable, thus reducing production costs.
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Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of catalytic conversion of biomass, in particular to a nickel-rhenium bimetallic catalyst, a preparation method and application thereof. BACKGROUND
[0002] 1,5-pentanediol is an important chemical raw material, which is widely used as a monomer for producing polyester and polyurethane. Among the many methods for preparing 1,5-pentanediol, the method of catalytic conversion of tetrahydrofurfuryl alcohol (THFA) to prepare 1,5-pentanediol has become a promising research field due to the more cheap and easy availability of biomass. In 2009, Tomishige et al. first used ReO x The modified Rh / SiO2 catalytically converted tetrahydrofurfuryl alcohol in one step (Chem Commun 2009, 2035-2037), and obtained 77% of the target product 1,5-pentanediol after 24h of reaction, and found that the yield was higher than that of the conventional multi-step reaction. Later, Dumesic et al. used C material as a carrier, successfully prepared Rh-ReO x / C catalyst to catalytically convert tetrahydrofurfuryl alcohol, and used density functional theory (DFT) to study the mechanism of the reaction (J Am Chem Soc 2011, 133, 12675-12689). In recent years, in order to reduce the consumption of noble metal-based catalysts, a non-noble metal-based catalyst NiPr 1.2 / Al2O3 was successfully applied to one-step catalytic conversion of tetrahydrofurfuryl alcohol hydrogenation ring-opening to prepare 1,5-pentanediol. However, the reaction condition is more harsh, and the yield of the final target product is only 70%. Considering the various catalysts reported before, the high cost, low catalytic efficiency and harsh reaction conditions are major difficulties faced in actual chemical production. Therefore, finding a low-cost non-noble metal-based catalyst and improving the conversion rate of tetrahydrofurfuryl alcohol and the selectivity of the product 1,5-pentanediol have become technical problems to be solved in the field. SUMMARY
[0003] The purpose of the present application is to overcome one or more deficiencies in the prior art, and to provide a novel nickel-rhenium bimetallic catalyst, which does not use noble metals, has relatively low cost, high catalytic activity, and good catalytic effect on the one-step reaction of tetrahydrofurfuryl alcohol hydrogenation ring-opening to prepare 1,5-pentanediol, can obtain high conversion rate and selectivity under mild conditions, has long service life and stability, and can be recycled and reused.
[0004] The present application also provides a method for preparing a nickel-rhenium bimetallic catalyst.
[0005] The present application also provides a method for preparing 1,5-pentanediol.
[0006] To achieve the above object, one technical solution adopted by the present application is:
[0007] A nickel-rhenium bimetallic catalyst, which has a rod-shaped cerium dioxide as a carrier, and uniformly carries the metal nickel and the metal rhenium on the carrier.
[0008] Further, the metal nickel and the metal rhenium exist at least in the form of a nickel-rhenium alloy.
[0009] Further, there is a metal-carrier interaction interface between the metal nickel, the metal rhenium and the carrier respectively.
[0010] According to some preferred aspects of the present application, in the catalyst, the mass ratio of nickel to rhenium is 1:0.55-0.75, further 0.60-0.66.
[0011] In one specific embodiment of the present application, in the catalyst, the mass ratio of nickel to rhenium is 1:0.63.
[0012] According to some preferred aspects of the present application, in the catalyst, the loading of nickel is 6%-10% and the loading of rhenium is 3%-7% by mass percentage.
[0013] The present application provides still another technical solution: a preparation method of a nickel-rhenium bimetallic catalyst, which comprises:
[0014] (1) dispersing a cerium source and an alkali metal hydroxide in water, reacting under heating, separating after the reaction, and calcining the product in a protective gas atmosphere to obtain a rod-shaped cerium dioxide (abbreviated as r-CeO2);
[0015] (2) dissolving a nickel source and a rhenium source in water respectively, adding the rod-shaped cerium dioxide, adding a reducing agent for reduction, separating the catalyst precursor after the reaction;
[0016] (3) subjecting the catalyst precursor to a first calcination in an oxygen-containing environment, and then to a second calcination in a hydrogen atmosphere.
[0017] In the present application, the "rod-shaped cerium dioxide" refers to cerium dioxide which exhibits a rod shape in shape. The rod shape can be a round rod with a regular circular cross section, can be a long strip shape which generally exhibits a regular shape, can be a long rod with some changes in shape in the length direction, etc., and can be a shape which generally exhibits an elongated shape (the longitudinal length is greater than the transverse length).
[0018] According to some preferred and specific aspects of the present application, in step (1), the cerium source comprises cerium nitrate and / or cerium acetate.
[0019] According to some preferred and specific aspects of the present application, in step (1), the alkali metal hydroxide is a combination of one or more selected from the group consisting of sodium hydroxide, potassium hydroxide and lithium hydroxide.
[0020] According to some preferred and specific aspects of the present application, in step (1), the concentration of the cerium source in the mixed solution is controlled to be 0.04-0.06 mol / L.
[0021] According to some preferred and specific aspects of the present application, in step (1), the concentration of the alkali metal hydroxide in the mixed solution is controlled to be 5-8 mol / L.
[0022] According to some preferred aspects of the present application, in step (1), the reaction is a hydrothermal reaction, and the reaction is controlled to be carried out at 80-120℃.
[0023] According to some preferred aspects of the present application, in step (1), the calcination is controlled to be carried out at a calcination temperature of 400-600℃.
[0024] Further, in step (1), the temperature is raised to the calcination temperature at a temperature raising rate of 2-8℃ / min; further, the calcination time of the calcination is controlled to be 2-4h.
[0025] According to some preferred aspects of the present application, in step (2), the nickel source is nickel nitrate and / or nickel acetate.
[0026] According to some preferred and specific aspects of the present application, in step (2), the rhenium source is ammonium perrhenate.
[0027] According to some preferred and specific aspects of the present application, in step (2), the reducing agent is sodium borohydride.
[0028] According to some preferred aspects of the present application, in step (2), the molar mass ratio of the nickel source, the rhenium source, the rod-shaped cerium dioxide and the reducing agent is 2-4:1-2:50-70:10-15.
[0029] According to some preferred aspects of the present application, in step (2), 0.1-0.3 mol of the nickel source is dissolved in 1L of water.
[0030] According to some preferred aspects of the present application, in step (2), the reduction is carried out at room temperature.
[0031] According to some preferred aspects of the present application, in step (3), the first calcination is carried out at 300-500℃, and further, the temperature is raised to 300-500℃ at a temperature raising rate of 2-8℃ / min.
[0032] According to some preferred and specific aspects of the present application, in step (3), the aerobic environment can be formed by passing air or oxygen.
[0033] According to some preferred aspects of the present application, in step (3), the second calcination is performed at 350-550℃, and further, the temperature is raised to 350-550℃ at a temperature raising rate of 2-8℃ / min.
[0034] According to some preferred aspects of the present application, in step (3), the calcination time of the first calcination and the second calcination is controlled to be 2-4h, respectively.
[0035] In the present application, step (3) can make the catalyst have stable activity by twice calcination, remove the easily volatile components, retain certain chemical composition, obtain suitable metal valence state, and obtain suitable metal-support interaction.
[0036] In some embodiments of the present application, the preparation method of the nickel-rhenium bimetallic catalyst comprises the following steps:
[0037] Step one, mix cerium nitrate hexahydrate and sodium hydroxide solution with a certain concentration, stir at room temperature, then put into an oven for hydrothermal reaction, after the reaction, centrifugal, deionized water and anhydrous ethanol washing, drying, high temperature calcination in the atmosphere of protective gas, to obtain rod-shaped CeO2.
[0038] Step two, dissolve nickel nitrate hexahydrate and ammonium perrhenate in water, add the rod-shaped CeO2 obtained in step one to it under stirring at room temperature, stir, then add sodium borohydride for reduction, continue to stir, after the reaction, centrifugal, deionized water washing, drying, to obtain catalyst precursor;
[0039] Step three, the catalyst precursor obtained in step two is subjected to first calcination in an aerobic environment, and then subjected to second calcination in a hydrogen atmosphere, to obtain rod-shaped CeO2 supported nickel-rhenium bimetallic catalyst.
[0040] In some embodiments of the present application, the protective gas can be nitrogen, argon and the like.
[0041] According to the present application, in practice, it is accidentally found that sintering of the catalyst precursor in an aerobic environment can obtain better catalytic effect than sintering in a protective gas atmosphere such as nitrogen or inert atmosphere, and it is analyzed that calcination in an aerobic environment such as air can make the dispersion of Ni and Re metals better, more Ni n+ , Re 7+ is produced, which can adsorb and activate the substrate tetrahydrofurfuryl alcohol, and is also beneficial to the rupture of C-O, indicating that calcination in an aerobic environment can enhance the metal synergy and metal-support interaction, thereby improving the catalyst activity.
[0042] The application provides a nickel-rhenium bimetallic catalyst prepared by the preparation method of the nickel-rhenium bimetallic catalyst.
[0043] The application provides a use of the nickel-rhenium bimetallic catalyst in catalyzing preparation of 1,5-pentanediol from tetrahydrofurfuryl alcohol through hydrogenation ring-opening.
[0044] The application provides a method for preparing 1,5-pentanediol, which comprises the following steps: taking tetrahydrofurfuryl alcohol as raw material, and performing reaction in a solvent in the presence of a catalyst and hydrogen to generate 1,5-pentanediol; wherein the catalyst is the nickel-rhenium bimetallic catalyst.
[0045] According to some preferred aspects of the application, the feeding mass ratio of the tetrahydrofurfuryl alcohol to the catalyst is 1-2:0.25-1.25.
[0046] According to some preferred aspects of the application, the reaction is controlled to be performed at 150-200 DEG C. Further, the reaction is controlled to be performed at 160-190 DEG C.
[0047] According to some preferred aspects of the application, the hydrogen is controlled to be introduced in an amount that enables the reaction to be performed at a pressure of 3-5 MPa.
[0048] In some embodiments of the application, the solvent comprises isopropyl alcohol.
[0049] In some embodiments of the application, the reaction time of the reaction is controlled to be 12-30 h.
[0050] In some embodiments of the application, after the reaction is completed, the catalyst is separated out for reuse in the next preparation.
[0051] Thanks to the above technical scheme, the application has the following advantages compared with the prior art:
[0052] (1) The nickel-rhenium bimetallic catalyst is adopted in the application, and the metal-support synergistic effect between the bimetallic surface and the carrier r-CeO2 can realize one-step preparation of 1,5-pentanediol from tetrahydrofurfuryl alcohol through hydrogenation ring-opening under relatively mild conditions;
[0053] (2) The two metals, nickel (Ni) and rhenium (Re), in the nickel-rhenium bimetallic catalyst prepared by the application are both non-noble metals, and the price is relatively low, the preparation process is simple, and the catalyst has good stability and recyclability;
[0054] (3) The present invention uses a nickel-rhenium bimetallic catalyst to catalyze the hydrogenation and ring-opening of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol, which can increase the conversion rate of tetrahydrofurfuryl alcohol to 94%, and the selectivity of the target product 1,5-pentanediol can be as high as 100%, which is of great significance for actual industrial production. Attached Figure Description
[0055] Figure 1 Transmission electron microscope image of the rod-shaped cerium dioxide-supported nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) prepared in Example 1 of the present invention;
[0056] Figure 2 The images show HAADF-STEM-EDS images of the rod-shaped cerium dioxide-supported nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) prepared in Example 1 of this invention; wherein, Figure (c) is a HAADF-STEM image, and Figures (d)-(g) are EDX elemental mapping images.
[0057] Figure 3 The XRD pattern of the rod-shaped cerium dioxide-supported nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) prepared in Example 1 of this invention;
[0058] Figure 4 The H2-TPR diagram of the rod-shaped cerium dioxide-supported nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) prepared in Example 1 of this invention;
[0059] Figure 5 XPS image of the rod-shaped cerium dioxide-supported nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) prepared in Example 1 of this invention;
[0060] Figure 6 This is the mass spectrum of the product after the reaction in Application Example 1 of the present invention. Detailed Implementation
[0061] The above-mentioned solution will be further described below with reference to specific embodiments; it should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited to the scope of the following embodiments; the implementation conditions used in the embodiments can be further adjusted according to specific requirements, and the implementation conditions not specified are usually the conditions in conventional experiments.
[0062] Unless otherwise specified in the following examples, all raw materials are commercially available or prepared by conventional methods in the art.
[0063] Example 1: Preparation of NiRe / r-CeO2 catalyst
[0064] Example 1-1
[0065] The example provides a nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) and a preparation method thereof, the preparation method comprising:
[0066] Step one, 1.74g of cerium nitrate hexahydrate is dissolved in 10mL of deionized water, 19.2g of sodium hydroxide is dissolved in 70mL of deionized water, both are mixed in a Teflon bottle, stirred for 30min, then put into a 100℃ oven for hydrothermal reaction for 24h, white precipitate is obtained, centrifuged, washed with deionized water and anhydrous ethanol for three times respectively, dried, heated to 500℃ at a heating rate of 5℃ / min in a nitrogen atmosphere, and calcined for 3h at constant temperature, to obtain rod-shaped CeO2;
[0067] Step two, 0.465g of nickel nitrate hexahydrate and 0.223g of ammonium perrhenate are dissolved in 20mL of deionized water, 1.2g of rod-shaped CeO2 is added under stirring, stirred at room temperature for 3h, 0.58g of sodium borohydride is added, and stirring is continued for 2h, centrifuged, washed with deionized water, and dried to obtain a catalyst precursor;
[0068] Step three, the catalyst precursor is heated to 400℃ at a heating rate of 5℃ / min in an air atmosphere, and calcined for 3h at constant temperature; grind and mix uniformly, and continue to heat to 450℃ at a heating rate of 5℃ / min in a hydrogen atmosphere, and calcined for 3h at constant temperature, to obtain the catalyst NiRe / r-CeO2.
[0069] Referring to the transmission electron microscope image of Figure 1 , it can be seen from the image with a scale of 50nm that the CeO2 exists in a rod-shaped morphology with a large length and a small width.
[0070] Referring to the HAADF-STEM-EDS image of Figure 2 , it can be seen that Ni, Re, Ce and O exist, and it can be seen that the Ni and Re metals are uniformly distributed on the rod-shaped CeO2 carrier.
[0071] From the XRD image of Figure 3 , it can be seen that no diffraction peak of the metal Ni and Re is found, indicating that the dispersion of the Ni and Re metals on the rod-shaped CeO2 carrier is very good.
[0072] From the H2-TPR image of Figure 4 , it can be seen that the NiRe / r-CeO2 has only one peak at 264℃, which is between the Ni / r-CeO2 and the Re / r-CeO2, indicating the formation of the NiRe alloy.
[0073] From the H2-TPR image of Figure 5The XPS diagram shows that the binding energy of Ni (a), Re (b), Ce (c), and O (d) has shifted, indicating that there is a metal-support interaction between Ni, Re metal and the carrier CeO2.
[0074] Example 1-2
[0075] The example provides a nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) and a preparation method thereof, the preparation method comprising:
[0076] Step one, dissolve 1.4g cerium nitrate hexahydrate in 8mL deionized water, dissolve 15g sodium hydroxide in 50mL deionized water, mix them in a Teflon bottle, stir for 30min, then put them into a 100℃ oven for hydrothermal reaction for 24h, obtain white precipitate, centrifugal, wash with deionized water and anhydrous ethanol for three times respectively, dry, in the atmosphere of nitrogen, heat to 500℃ at a heating rate of 5℃ / min, constant temperature calcination for 3h, obtain rod-shaped CeO2;
[0077] Step two, dissolve 0.3g nickel nitrate hexahydrate and 0.08g ammonium perrhenate in 10mL deionized water, add 1g rod-shaped CeO2 under stirring, stir at room temperature for 3h, add 0.4g sodium borohydride, continue to stir for 2h, centrifugal, wash with deionized water, dry, obtain catalyst precursor;
[0078] Step three, heat the catalyst precursor to 400℃ at a heating rate of 5℃ / min in the atmosphere of air, constant temperature calcination for 3h; grind and mix uniformly, continue to heat to 450℃ at a heating rate of 5℃ / min in the atmosphere of hydrogen, constant temperature calcination for 3h, obtain catalyst NiRe / r-CeO2.
[0079] Example 1-3
[0080] The example provides a nickel-rhenium bimetallic catalyst (NiRe / r-CeO2) and a preparation method thereof, the preparation method comprising:
[0081] Step one, dissolve 1.74g cerium nitrate hexahydrate in 10mL deionized water, dissolve 19.2g sodium hydroxide in 70mL deionized water, mix them in a Teflon bottle, stir for 30min, then put them into a 120℃ oven for hydrothermal reaction for 24h, obtain white precipitate, centrifugal, wash with deionized water and anhydrous ethanol for three times respectively, dry, in the atmosphere of nitrogen, heat to 500℃ at a heating rate of 5℃ / min, constant temperature calcination for 3h, obtain rod-shaped CeO2;
[0082] Step two, dissolve 0.465 g of nickel nitrate hexahydrate and 0.223 g of ammonium perrhenate in 20 mL of deionized water, add 1.2 g of rod-like CeO2 under stirring, stir at room temperature for 3 h, add 0.58 g of sodium borohydride, continue to stir for 2 h, centrifuge, wash with deionized water, dry to obtain a catalyst precursor;
[0083] Step three, heat the catalyst precursor to 300°C at a heating rate of 5°C / min in an atmosphere of air, and calcine at constant temperature for 3 h; grind and mix uniformly, continue to heat to 350°C at a heating rate of 5°C / min in an atmosphere of hydrogen, and calcine at constant temperature for 3 h to obtain the catalyst NiRe / r-CeO2.
[0084] Comparative example 1
[0085] Essentially the same as Example 1-1 The difference is only that the CeO2 obtained in step one is not in rod-like morphology, and the specific operation is as follows:
[0086] Step one, purchase commercially available nanometer ceria (n-CeO2);
[0087] Step two, dissolve 0.465 g of nickel nitrate hexahydrate and 0.223 g of ammonium perrhenate in 20 mL of deionized water, add 1.2 g of n-CeO2 under stirring, stir at room temperature for 3 h, add 0.58 g of sodium borohydride, continue to stir for 2 h, centrifuge, wash with deionized water, dry to obtain a catalyst precursor;
[0088] Step three, heat the catalyst precursor to 400°C at a heating rate of 5°C / min in an atmosphere of air, and calcine at constant temperature for 3 h; grind and mix uniformly, continue to heat to 450°C at a heating rate of 5°C / min in an atmosphere of hydrogen, and calcine at constant temperature for 3 h to obtain the catalyst NiRe / n-CeO2.
[0089] Comparative example 2
[0090] Essentially the same as Example 1-1 The difference is only that the CeO2 obtained in step one is not in rod-like morphology, and the specific operation is as follows:
[0091] Comparative example 3
[0092] Essentially the same as Example 1-1 The difference is only that step three is heated to 400°C at a heating rate of 5°C / min in an atmosphere of nitrogen, and calcined at constant temperature for 3 h, and then ground and mixed uniformly, and continue to heat to 450°C at a heating rate of 5°C / min in an atmosphere of hydrogen, and calcine at constant temperature for 3 h to obtain the catalyst NiRe / r-CeO2.
[0093] Application Example 1: One-step catalytic hydrogenation ring-opening of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol
[0094]
[0095] 153 mg (1.5 mmol) of tetrahydrofurfuryl alcohol, 100 mg of NiRe / r-CeO2 prepared according to Example 1-1, and 5 mL of isopropanol were sequentially added to a high-pressure reaction kettle, hydrogen was replaced three times, the hydrogen pressure was controlled at 5 MPa, and stirring (500 rpm) was performed at 180 °C for 24 h; after the reaction was completed, the temperature was lowered, the catalyst and the organic phase were separated, the organic phase was determined by gas chromatography-mass spectrometry to have a yield of 94% of the target product 1,5-pentanediol, and the product mass spectrum is shown in FIG. 1. Figure 5
[0096] Application Comparative Example 1
[0097] The application comparative example 1 is basically the same as the application example 1, except that the “NiRe / r-CeO2 prepared according to Example 1-1” is replaced by the catalyst prepared according to the application comparative example 1. The yield of the target product 1,5-pentanediol is measured to be 0%.
[0098] Application Comparative Example 2
[0099] The application comparative example 2 is basically the same as the application example 1, except that the “NiRe / r-CeO2 prepared according to Example 1-1” is replaced by the catalyst prepared according to the application comparative example 2. The yield of the target product 1,5-pentanediol is measured to be 18%.
[0100] Application Comparative Example 3
[0101] The application comparative example 3 is basically the same as the application example 1, except that the “NiRe / r-CeO2 prepared according to Example 1-1” is replaced by the catalyst prepared according to the application comparative example 3. The yield of the target product 1,5-pentanediol is measured to be 41%.
[0102] Application Example 2: Repeated use of NiRe / r-CeO2 to catalyze hydrogenation ring-opening of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol
[0103] 153 mg (1.5 mmol) of tetrahydrofurfuryl alcohol, 100 mg of NiRe / r-CeO2 prepared according to the method of Example 1-1, and 5 mL of isopropanol were sequentially added to a high-pressure reaction kettle, hydrogen was replaced three times, the hydrogen pressure was controlled at 5 MPa, and stirring (500 rpm) was performed at 180 °C for 24 h; after the reaction was completed, the temperature was lowered, the catalyst was separated by centrifugation, washed with methanol three times, and dried. After repeating the above process 6 times, the organic phase was determined by gas chromatography-mass spectrometry to have a yield of 90% of the target product 1,5-pentanediol.
[0104] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.
[0105] The endpoints of the ranges and any values described herein are not limited to the precise values recited as exactly that endpoint point, but rather to be understood as being approximate thereof. For ranges, the endpoints are to be understood to be the starting and ending values, and the endpoint values are to be understood to be independently combinable with each other to generate new ranges not specifically listed.
Claims
1. Use of a nickel-rhenium bimetallic catalyst in the catalytic hydro ring opening of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol, characterized in that, The nickel-rhenium bimetallic catalyst has a rod-shaped cerium dioxide as a carrier, and uniformly loaded with metal nickel and metal rhenium on the carrier, the metal nickel and the metal rhenium at least exist in the form of nickel-rhenium alloy, and the metal nickel, the metal rhenium and the carrier respectively exist between the metal-carrier interaction interface; in the catalyst, the load of nickel is 6%-10% and the load of rhenium is 3%-7% in terms of mass percentage.
2. Use according to claim 1, characterized in that, In the catalyst, the mass ratio of nickel to rhenium is 1:0.55-0.
75.
3. Use according to claim 1, characterized in that, In the catalyst, the mass ratio of nickel to rhenium is 1:0.60-0.
66.
4. Use according to claim 1, characterized in that, The nickel-rhenium bimetallic catalyst is prepared by the following method: (1) dispersing a cerium source and an alkali metal hydroxide in water to obtain a mixed solution, reacting under heating, separating after the reaction, and calcining the product in a protective gas atmosphere to obtain a rod-shaped cerium dioxide; (2) dissolving a nickel source and a rhenium source in water respectively, adding the rod-shaped cerium dioxide, reducing by adding a reducing agent, separating the catalyst precursor after the reaction; (3) performing first calcination of the catalyst precursor in an oxygen-containing environment, and then performing second calcination in a hydrogen atmosphere.
5. Use according to claim 4, characterized in that, In step (1), the cerium source includes cerium nitrate and / or cerium acetate; and / or, in step (1), the alkali metal hydroxide is a combination of one or more selected from sodium hydroxide, potassium hydroxide and lithium hydroxide; and / or, in step (1), the concentration of the cerium source in the mixed solution is controlled to be 0.04-0.06 mol / L; and / or, in step (1), the concentration of the alkali metal hydroxide in the mixed solution is controlled to be 5-8 mol / L.
6. Use according to claim 4, characterized in that, In step (1), the reaction is a hydrothermal reaction, and the reaction is controlled to be carried out at 80-120℃; and / or, in step (1), the calcination is controlled to be carried out at a calcination temperature of 400-600℃; and / or, in step (1), the heating rate of the calcination is controlled to be 2-8℃ / min; and / or, in step (1), the calcination time of the calcination is controlled to be 2-4h.
7. Use according to claim 4, characterized in that, In step (2), the nickel source is nickel nitrate and / or nickel acetate; and / or, in step (2), the rhenium source is ammonium perrhenate; and / or, in step (2), the reducing agent is sodium borohydride.
8. Use according to claim 4, characterized in that, In step (2), the molar ratio of the nickel source, the rhenium source, the rod-shaped cerium dioxide and the reducing agent is 2-4:1-2:50-70:10-15; and / or, in step (2), 0.1-0.3 mol of the nickel source is dissolved in every 1 L of water; and / or, in step (2), the reduction is carried out at room temperature.
9. Use according to claim 4, characterized in that, In step (3), the first calcination is carried out at 300-500℃; and / or, in step (3), the second calcination is carried out at 350-550℃; and / or, in step (3), the calcination time of the first calcination and the second calcination is controlled to be 2-4h respectively.
10. The use according to claim 1, characterized in that, In the application, tetrahydrofurfuryl alcohol is used as a raw material, and a reaction is carried out in a solvent in the presence of a catalyst and hydrogen to generate 1,5-pentanediol.
11. Use according to claim 10, characterized in that, In the application, the mass ratio of tetrahydrofurfuryl alcohol to the catalyst is 1-2:0.25-1.25; and / or, in the application, the reaction is controlled to be carried out at 150-200℃; and / or, in the application, the amount of hydrogen gas is controlled so that the reaction is carried out at a pressure of 3-5 MPa; and / or, in the application, the solvent comprises isopropyl alcohol.
Citation Information
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Catalyst for synthesizing carbon monoxide through low-temperature reverse water-gas shift reaction and preparation method of catalyst
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