Preparation method and application of Cu-MOF carrier loaded Ru catalyst

Abstract

The invention relates to the field of organic synthesis, in particular to a method for preparing a catalyst Ru / Cu-MOF by loading metal Ru on a Cu-MOF carrier and application of the catalyst Ru / Cu-MOF. The preparation method comprises the following steps: preparing a Cu-MOF carrier from copper nitrate trihydrate and 2, 5-dihydroxy terephthalic acid; then adding the Cu-MOF carrier and ruthenium chloride hydrate into deionized water; the Ru / Cu-MOF catalyst is prepared by directly removing ionized water and reducing the obtained solid in a reducing atmosphere. Or a NaBH4 solution is directly added into a uniformly dispersed system to prepare the Ru / Cu-MOF catalyst, and the Ru / Cu-MOF catalyst is used for catalyzing aldehydes to prepare corresponding alcohols, especially for catalyzing 5-chloromethylfurfural to prepare 2, 5-furandimethanol through hydrogenation. The preparation method of the catalyst is simple, and the prepared catalyst is high in activity, has certain reusability, not only can catalyze rapid reaction of 5-chloromethylfurfural in a water phase, is mild in reaction condition and high in yield, but also can realize preparation of corresponding alcohol by catalytic hydrogenation of aldehyde substances in the water phase, and has good activity.

Description

Technical Field

[0001] The invention belongs to the field of organic synthesis, and specifically relates to the preparation and application of a Cu-MOF carrier-loaded Ru catalyst. Background Art

[0002] With the increasing depletion of traditional fossil energy around the world and people's increasing concern about environmental pollution and carbon emissions, it is imperative to develop clean and efficient green energy. As the most abundant and only sustainable organic carbon source in nature, biomass energy has been widely used in the production of fuels and chemicals, and has shown great application potential. 5-Hydroxymethylfurfural (HMF), as one of the key platform molecules derived from lignocellulosic, is an important bridge connecting biomass with renewable fuels, high value-added chemicals and materials. Many high value-added chemicals can be prepared by catalytic reduction of unsaturated groups and furan rings in HMF through hydrogenation, amination, ring opening, etc. [Yunchao Feng, Sishi Long, et al. Earth-abundant 3d-transition-metal catalysts for lignocellulosic biomass conversion]. Among these chemicals, 2,5-Bishydroxymethylfuran (BHMF) is an important polymer monomer and drug synthesis intermediate, and has great application potential in the preparation of resins, polymers, artificial fibers, and pharmaceutical manufacturing [Lei Hu, Lu Lin, et al. Recent advances in catalytic transformation of biomass-derived 5-hydroxymethylfurfural into the innovative fuels and chemicals]. In addition, BHMF can be further hydrogenated to generate another important chemical 2,5-tetrahydrofuran dimethanol (BHMTHF), which can be used as a green solvent and monomer. However, due to the many disadvantages of HMF in the preparation and storage process, the large-scale application of BHMF prepared with HMF as raw material is greatly limited.

[0003] In recent years, 5-chloromethylfurfural (CMF) has received extensive research attention as a new type of biomass-based platform molecule. Compared with HMF, CMF not only has a molecular structure similar to HMF, but can also be obtained directly from lignocellulosic biomass in high yield under mild conditions. Its excellent stability and hydrophobicity are also conducive to subsequent separation and purification. The above characteristics make CMF more promising as a platform molecule. However, there are currently few reports on the synthesis of BHMF from CMF. It was not until 2022 that Chen et al. [Binglin Chen, Yunchao Feng, et al. One-pot synthesis of 2,5-bis(hydroxymethyl)furan from biomass derived 5-(chloromethyl)furfural in highyield; Chinese patent CN114105914A A method for preparing 2,5-furan dimethanol using 5-chloromethylfurfural] realized the one-pot conversion of CMF to BHMF in aqueous phase for the first time, but there are still problems such as low catalyst activity and high dosage. Therefore, developing stable and efficient catalysts to achieve catalytic conversion of CMF to prepare BHMF under relatively mild conditions has important scientific research value and industrial application significance for promoting the large-scale application of CMF. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a method for preparing a catalyst Ru / Cu-MOF by loading metal Ru on a Cu-MOF carrier and its application, especially in the application of preparing 2,5-furan dimethanol by hydrogenation of 5-chloromethylfurfural. The catalyst preparation method is simple, the prepared catalyst has high activity and a certain reusability, and can not only catalyze the rapid reaction of 5-chloromethylfurfural in the aqueous phase, with mild reaction conditions and high yield, but also can realize the catalytic hydrogenation of aldehydes in the aqueous phase to prepare the corresponding alcohols, and all have good activity.

[0005] The present invention provides a method for preparing a Cu-MOF carrier-supported metal Ru catalyst, comprising the following steps:

[0006] (1) Preparation of Cu-MOF carrier:

[0007] Dissolve copper nitrate trihydrate and 2,5-dihydroxyterephthalic acid in a mixed solution of anhydrous ethanol, deionized water and N,N-dimethylformamide, and stir evenly; put into a reaction container, heat and react to obtain a Cu-MOF carrier;

[0008] (2) Preparation of Ru / Cu-MOF catalyst:

[0009] The Cu-MOF carrier and ruthenium chloride hydrate of step (1) are added to deionized water and dispersed evenly; the ionized water is directly removed, and the obtained solid is reduced under a reducing atmosphere to obtain a Ru / Cu-MOF catalyst; or NaBH4 solution is directly added to the uniformly dispersed system to obtain a Ru / Cu-MOF catalyst.

[0010] Preferably, in step (1), the addition ratio of copper nitrate trihydrate, 2,5-dihydroxyterephthalic acid, anhydrous ethanol, deionized water and N,N-dimethylformamide is: (0.3-1) g: (0.1-1) g: (1-10) ml: (1-10) ml: (10-50) ml. Preferably, it is (0.5-0.8) g: (0.15-0.4) g: (2-5) ml: (2-5) ml: (20-35) ml.

[0011] Preferably, in step (1), the stirring is carried out under magnetic stirring; the reaction vessel is a reactor lined with polytetrafluoroethylene; the heating reaction is carried out in an oven at 80-120°C for 20-30h; more preferably, the heating temperature is 85°C and the heating time is 24h;

[0012] Preferably, in the step (1), after the heating reaction, the step further includes cooling to room temperature and filtering, dispersing the collected solid in methanol for 12-36 hours (preferably 24 hours), collecting the filter cake after filtration, washing it with methanol and ethanol for multiple times and then vacuum drying to obtain a reddish brown solid powder Cu-MOF carrier;

[0013] Preferably, in step (2), the amount of ruthenium chloride hydrate added is 3%-20% of the mass of the Cu-MOF support, preferably 13%.

[0014] Preferably, in step (2), the dispersion stirring time is 1-3 hours; and the deionized water is removed by vacuum distillation;

[0015] Preferably, in step (2), the reducing atmosphere is N2 containing 10% H2, and the reducing conditions are reducing at 150-300°C for 0.5-2h, and cooling to room temperature after reduction;

[0016] Preferably, in the step (2), the NaBH4 solution is added dropwise, stirring is continued for 1-3 hours, the solid-liquid is separated, the solid is washed with deionized water for multiple times until the washing liquid is neutral, and the Ru / Cu-MOF catalyst is obtained after drying and grinding.

[0017] The present invention also provides the use of the above-mentioned Cu-MOF carrier-supported metal Ru catalyst in catalyzing aldehyde substances to prepare corresponding alcohols. The aldehyde substance is any one of furfural, 5-methylfurfural, 5-hydroxymethylfurfural, benzaldehyde, p-chloromethylbenzaldehyde, and chlorovaleraldehyde. The specific application steps are as follows:

[0018] The catalyst, water and aldehyde substances are added into the reactor, and the reactor is sealed and filled with hydrogen to react to obtain the corresponding hydrogenation product.

[0019] Preferably, the usage ratio of the catalyst, water and aldehyde substance is 20-50 mg:10-20 mL:0.1 g.

[0020] Preferably, the reactor is a high-pressure resistant Hastelloy reactor; 20 bar to 70 bar of hydrogen is filled into the sealed reactor, and the reaction is carried out for 1 to 5 hours at 30 to 120° C. under mechanical stirring;

[0021] Preferably, the reactor is sealed and filled with 20 bar to 40 bar of hydrogen, and the reaction is carried out at 40 to 100° C. for 2 to 4 hours under mechanical stirring.

[0022] Furthermore, the present invention also provides the application of the above Ru / Cu-MOF catalyst in the hydrogenation of 5-chloromethylfurfural to prepare 2,5-furan dimethanol. The specific application steps are as follows:

[0023] Add Ru / Cu-MOF catalyst, water and 5-chloromethylfurfural into a reactor, and then add sodium dithionite and calcium carbonate. After sealing the reactor, hydrogen is introduced to react and obtain 2,5-furan dimethanol.

[0024] Preferably, the usage ratio of the catalyst, water and 5-chloromethylfurfural is 20-50 mg:10-20 mL:0.1 g.

[0025] Preferably, the catalyst, water and 5-chloromethylfurfural are further selected in a dosage ratio of 25 mg:10 mL:0.1 g;

[0026] Preferably, the reactor is a high-pressure resistant Hastelloy reactor;

[0027] Preferably, 0.01 g of sodium dithionite and 0.05 g of calcium carbonate are added, and the reactor is sealed and then filled with 20 bar-70 bar of hydrogen, and the reaction is carried out under mechanical stirring at 40-130° C. for 0.5-3 h; wherein the calcium carbonate is used as a neutralizer and the sodium dithionite is used as a stabilizer.

[0028] Preferably, the reactor is sealed and then filled with 50 bar of hydrogen; the reaction is carried out at 110° C. with mechanical stirring for 2 h.

[0029] Compared with the prior art, the present invention has the following advantages and effects:

[0030] 1. The present invention uses Cu-MOF as a carrier and adopts an impregnation method to obtain a supported catalyst with Cu and Ru bimetallic active sites, and the preparation method is simple. The introduction of the MOF carrier makes the Ru species highly dispersed on the carrier surface, which significantly improves the catalytic activity of the catalyst.

[0031] 2. The raw material 5-chloromethylfurfural used in the present invention can be directly prepared from cheap lignocellulosic biomass raw materials with high yield, and is easy to separate and store for a long time, thus broadening the high-value utilization of biomass resources.

[0032] 3. The present invention uses Ru / Cu-MOF catalyst to catalyze the aqueous phase hydrogenation of 5-chloromethylfurfural. Compared with the existing method, the catalyst has higher activity, less usage, stronger reusability, and the catalyst has high substrate universality, and can selectively hydrogenate aldehydes to prepare corresponding alcohols. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 : A brief flow chart of the catalyst preparation method of Example 1;

[0034] Figure 2 : X-ray diffraction patterns (XRD patterns) of the Cu-MOF carrier and the Cu-MOF carrier-supported metal Ru catalyst (Ru / Cu-MOF) prepared in Example 1;

[0035] Figure 3 : Scanning electron microscopy image of the Cu-MOF support prepared in Example 1;

[0036] Figure 4 : Scanning electron micrograph of the Cu-MOF carrier-supported metal Ru catalyst (Ru / Cu-MOF) prepared in Example 1;

[0037] Figure 5 : Transmission electron microscopy image and EDX energy spectrum of the Cu-MOF carrier-loaded metal Ru catalyst (Ru / Cu-MOF) prepared in Example 1. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is described in detail below in conjunction with specific embodiments and the accompanying drawings. Unless otherwise specified, the reagents and instruments used in the following embodiments are all commercially available products. Specific implementation cases are as follows.

[0039] Example 1. Preparation of Cu-MOF Supported Metal Ru Catalyst (Ru / Cu-MOF)

[0040] Use as attached Figure 1 The catalyst preparation process shown in the figure is as follows:

[0041] First, 0.6 g of copper nitrate trihydrate and 0.2 g of 2,5-dihydroxyterephthalic acid were dissolved in a mixed solvent consisting of 30 ml of N,N-dimethylformamide, 2 ml of deionized water and 2 ml of anhydrous ethanol, and stirred evenly by magnetic stirring;

[0042] The above solution was placed in a 50 ml polytetrafluoroethylene-lined reactor, heated in an oven at 85°C for 24 hours, cooled to room temperature, and then filtered. The collected solid was dispersed in methanol for 24 hours. After filtering, the filter cake was collected, washed with methanol and ethanol several times, and then vacuum dried to obtain a reddish-brown solid powder (Cu-MOF carrier);

[0043] 1 g of Cu-MOF carrier and 0.13 g of ruthenium chloride hydrate were added to deionized water and stirred to disperse and mix evenly. After stirring for 2 h, NaBH4 solution was added dropwise and stirred for 2 h. The solid and liquid were separated and the solid was washed with deionized water several times until the washing liquid was neutral. After drying and grinding, the Ru / Cu-MOF catalyst was obtained.

[0044] The Cu-MOF carrier and Ru / Cu-MOF catalyst obtained in Example 1 were analyzed and characterized as follows:

[0045] Figure 2 The XRD diffraction patterns of the Cu-MOF support and the Ru / Cu-MOF catalyst are shown in Figure 2. The XRD pattern of the synthesized Cu-MOF is consistent with the simulation results. The two obvious characteristic peaks at 6.8° and 11.7° correspond to the (110) and (300) crystal planes of MOF, respectively. The new diffraction peaks at 36.4°, 42.3°, 61.4°, and 73.5° of the Ru / Cu-MOF catalyst are related diffraction peaks of CuO2. This indicates that during the reduction of Ru, some Cu species on the Cu-MOF will also be reduced.

[0046] Figure 3 This is the SEM characterization picture of the Cu-MOF carrier. It can be seen from the picture that the synthesized Cu-MOF carrier has an obvious geometric structure, its cross-section is hexagonal, and it has a relatively smooth surface.

[0047] Figure 4 This is the SEM characterization image of the Ru / Cu-MOF catalyst. After loading Ru, the structure of the Cu-MOF carrier itself did not change significantly, and cluster particles were dispersed on the surface of the carrier.

[0048] The Ru / Cu-MOF catalyst prepared in Example 1 was observed using a transmission electron microscope (TEM) and an energy dispersive X-ray diffraction (EDX) spectrometer. Figure 5As shown in the figure, the TEM image clearly shows the Ru loading on the surface of the Cu-MOF support, and EDX shows that the Ru element is evenly distributed on the surface of MOF.

[0049] Example 2. Preparation of Catalyst

[0050] 1 g of the Cu-MOF carrier and 0.13 g of ruthenium chloride hydrate prepared in Example 1 were added to deionized water and stirred to disperse and mix evenly. After stirring for 2 h, the deionized water was removed and the Ru / Cu-MOF catalyst was reduced in a 10% H2 N2 atmosphere.

[0051] Comparative Example 1: Preparation of Ru / Cu-BTC Catalyst

[0052] First, 1.2 g of copper nitrate trihydrate was dissolved in 15 ml of deionized water, and 1.05 g of trimesic acid was dissolved in a mixed solution consisting of 7.5 ml of N,N-dimethylformamide and 7.5 ml of anhydrous ethanol, and the mixture was stirred evenly by magnetic stirring.

[0053] The above solutions were evenly mixed and placed in a 50 ml polytetrafluoroethylene-lined reactor, heated in an oven at 120°C for 12 hours, cooled to room temperature, filtered, and the filter cake was collected. It was washed with N,N-dimethylformamide and ethanol several times and then vacuum dried to obtain a blue solid powder (Cu-BTC carrier).

[0054] 1 g of Cu-BTC carrier and 0.13 g of ruthenium chloride hydrate were added to deionized water and stirred to disperse and mix evenly. After stirring for 2 h, NaBH4 solution was added dropwise and stirred for 2 h. The solid and liquid were separated and the solid was washed with deionized water several times until the washing liquid was neutral. After drying and grinding, the Ru / Cu-BTC catalyst was obtained.

[0055] Comparative Example 2: Preparation of Ru / CuO Catalyst

[0056] 1 g of CuO carrier and 0.13 g of ruthenium chloride hydrate were added to deionized water and stirred to disperse and mix evenly. After stirring for 2 h, NaBH4 solution was added dropwise and stirring was continued for 2 h. The solid and liquid were separated and the solid was washed with deionized water several times until the washing liquid was neutral. After drying and grinding, the Ru / CuO catalyst was obtained.

[0057] Embodiment 3-6

[0058] Ru / Cu-MOF catalyst (25 mg), 5-chloromethylfurfural (0.1 g) and water (10 mL) were added to a high-pressure Hastelloy reactor. After the reactor was sealed, the air in the reactor was replaced with hydrogen for 3-4 times, and then 40 bar of hydrogen was filled. The autoclave was heated to the set temperature and stirred at a rate of 600 RPM (r / min) for 2 h under mechanical stirring. After the reaction was completed, the autoclave was cooled to room temperature and decompressed, and the reaction solution was filtered with a 0.45 μm organic filter head, and the reaction solution was detected by high-performance liquid chromatography (Agilent 1260), and the product was identified by gas chromatography-mass spectrometry (Trace 1300-ISQ).

[0059] The catalytic effects of Examples 2-6 and Comparative Examples 1 and 2 are shown in Table 1:

[0060] Table 1 Effects of different catalysts and different catalytic temperatures on the reaction

[0061]

[0062]

[0063] As can be seen from the above table, the data of Examples 3-6 show that as the reaction temperature increases, it is more conducive to the activation of hydrogen by the catalyst and more conducive to the generation of 2,5-furan dimethanol. As the temperature increases, the yield of 2,5-furan dimethanol gradually increases. However, when the temperature exceeds 110°C, further increasing the temperature will cause the yield of 2,5-furan dimethanol to decrease, indicating that too high a reaction temperature may lead to an intensification of side reactions, so 110°C is used to continue the subsequent research.

[0064] Comparing the catalytic performance of different catalysts under the same conditions, the BHMF yields of Example 5 and Comparative Example 1 are significantly higher than those of Comparative Example 2, indicating that the introduction of the MOF structure can effectively improve the hydrogenation ability of the catalyst, which can be attributed to the high specific surface area of ​​the metal organic framework structure, which makes the catalyst surface have more catalytic active sites, and the MOF carrier used in Example 5 is more preferred. Compared with Example 2, different reduction methods will also affect the catalytic performance of the catalyst, preferably by NaBH4 reduction.

[0065] Examples 7-12

[0066] According to the operation method and steps of Example 5, different hydrogen pressures were changed to obtain 2,5-furan dimethanol and 5-hydroxymethyl furfural. The details are shown in Table 2:

[0067] Table 2 Effect of different hydrogen pressures on the reaction

[0068]

[0069]

[0070] Based on the above results, it can be seen that the higher the hydrogen pressure, the higher the yield of 2,5-furan dimethanol. When the hydrogen pressure reaches 50 bar, the yield of 2,5-furan dimethanol can reach 92%. Further increasing the hydrogen pressure does not significantly improve the yield of 2,5-furan dimethanol, so 50 bar is more preferred.

[0071] Examples 13-17

[0072] The operation method and steps are the same as those in Example 10, the reaction temperature is fixed at 110° C., the hydrogen pressure is 50 bar, and only the reaction time is changed. 2,5-furan dimethanol and 5-hydroxymethyl furfural are also obtained, but the yields are different, as shown in Table 3:

[0073] Table 3 Effect of different catalytic reaction time on the reaction

[0074]

[0075] Table 3 shows that the conversion of 5-chloromethylfurfural CMF is a rapid process, and complete conversion can be achieved within the screening time range. Within 1 h, the yields of BHMF and HMF can reach 61% and 39%, respectively. Further extending the reaction time to 2 h can obtain 92% BHMF and 5% HMF.

[0076] Comparative Example 3

[0077] To further illustrate the effect of the present invention, the catalytic effect of the Ru / Cu-MOF catalyst prepared in Example 1 was compared with that of the catalyst in the prior art. The results are shown in Table 4.

[0078] Table 4 Comparison of the Ru / Cu-MOF catalyst of Example 1 with the catalyst of the prior art

[0079]

[0080] Note: Literature[1]CHEN BL,FENG YC,MA S,et al.One-pot synthesis of2,5-bis(hydroxymethyl)furan from biomass derived 5-(chloromethyl)furfural in highyield[J].Journal of Energy Chemistry,2023,76:421-428.

[0081] Since the research in this field is relatively new, there is only one literature report. Compared with reference [1], Example 1 of the present invention uses less catalyst and has a higher BHMF yield, indicating that the Ru / Cu-MOF catalyst of the present invention has more excellent catalytic performance.

[0082] Examples 18-23

[0083] The Ru / Cu-MOF catalyst prepared in Example 1 is used to catalyze the preparation of corresponding alcohols from aldehydes. The steps are as follows: the catalyst, water and aldehydes are added to a high-pressure Hastelloy reactor in a ratio of 25 mg: 10 mL: 0.1 g. After the reactor is sealed, the air in the reactor is replaced with hydrogen 3-4 times, and then a certain pressure of hydrogen (40 bar) is filled in. After that, the autoclave is heated to a set temperature (40°C-100°C) and stirred at a rate of 600RPM (revolutions per minute, r / min) under mechanical stirring. Wait for the reaction to end, cool the autoclave to room temperature and reduce pressure, extract with an organic solution, filter the reaction solution with a 0.45 μm organic filter head, and perform gas chromatography (Agilen7890B) detection on the post-reaction solution, and identify the product with a gas chromatography-mass spectrometer (Trace1300-ISQ). As shown in Table 5:

[0084] Table 5 Effects of different substrates on the reaction

[0085]

[0086]

[0087] It can be seen from the experimental data in Table 5 that for different aldehyde substrates, the Ru / Cu-MOF catalyst can obtain a higher yield.

Claims

1. A method for preparing a Cu-MOF carrier-supported metal Ru catalyst, characterized in that: The steps include: (1) Preparation of Cu-MOF carrier: Dissolve copper nitrate trihydrate and 2,5-dihydroxyterephthalic acid in a mixed solution of anhydrous ethanol, deionized water and N,N-dimethylformamide, and stir evenly; put into a reaction container, heat and react to obtain a Cu-MOF carrier; (2) Preparation of Ru / Cu-MOF catalyst: The Cu-MOF carrier and ruthenium chloride hydrate of step (1) are added to deionized water and dispersed evenly; the ionized water is directly removed, and the obtained solid is reduced under a reducing atmosphere to obtain a Ru / Cu-MOF catalyst; or NaBH4 solution is directly added to the uniformly dispersed system to obtain a Ru / Cu-MOF catalyst.

2. The method according to claim 1, characterized in that In the step (1), the addition ratio of copper nitrate trihydrate, 2,5-dihydroxyterephthalic acid, anhydrous ethanol, deionized water and N,N-dimethylformamide is: 0.3-1g: 0.1-1g: 1-10ml: 1-10ml: 10-50ml; preferably 0.5-0.8g: 0.15-0.4g: 2-5ml: 2-5ml: 20-35ml.

3. The method according to claim 1, characterized in that In the step (1), the heating reaction is carried out in an oven at 80-120°C for 20-30 hours; preferably, the heating temperature is 85°C and the heating time is 24 hours.

4. The method according to claim 1, characterized in that In the step (1), after the heating reaction, the process further includes cooling to room temperature and filtering, dispersing the collected solid in methanol for 12-36 hours (preferably 24 hours), collecting the filter cake after filtration, washing it with methanol and ethanol for multiple times, and then vacuum drying to obtain a reddish-brown solid powder Cu-MOF carrier.

5. The method according to claim 1, characterized in that In the step (2), the amount of ruthenium chloride hydrate added is 3%-20% of the mass of the Cu-MOF carrier, preferably 13%.

6. The method according to claim 1, characterized in that In the step (2), the reducing atmosphere is N2 containing 10% H2, and the reducing conditions are reduction at 150-300°C for 0.5-2h.

7. The method according to claim 1, characterized in that In the step (2), the NaBH4 solution is added dropwise, and stirring is continued for 1-3 hours. The solid and liquid are separated, and the solid is washed with deionized water for multiple times until the washing liquid is neutral. After drying and grinding, the Ru / Cu-MOF catalyst is obtained.

8. Use of a Ru / Cu-MOF catalyst prepared by any method of claims 1-7, characterized in that: The Ru / Cu-MOF catalyst is used to catalyze aldehyde substances to prepare corresponding alcohols; the specific steps are: adding the Ru / Cu-MOF catalyst, water and aldehyde substances into a reactor, sealing the reactor and filling it with hydrogen to react to obtain the corresponding alcohol; the aldehyde substance is any one of furfural, 5-methylfurfural, 5-hydroxymethylfurfural, benzaldehyde, p-chloromethylbenzaldehyde, and chlorovaleraldehyde.

9. The use according to claim 8, characterized in that Ru / Cu-MOF catalyst was used to catalyze the hydrogenation of 5-chloromethylfurfural to produce 2,5-furan dimethanol.

10. The use according to claim 9, characterized in that The specific steps of catalysis are: adding Ru / Cu-MOF catalyst, water and 5-chloromethylfurfural into a reactor, and adding sodium dithionite and calcium carbonate, sealing the reactor and then filling it with hydrogen to react and obtain 2,5-furan dimethanol.

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