A metal-modified Cu / MgO catalyst, a preparation method thereof and application thereof in preparation of furfural to pentanediol

Abstract

The application discloses a metal-modified Cu / MgO catalyst and a preparation method and application thereof in furfural preparation of pentanediol, and belongs to the technical field of catalysts. The metal-modified Cu / MgO catalyst provided by the application is composed of Cu, MgO and M, Cu serves as a metal active center and plays a main catalytic role in furfural hydrogenation, MgO and M jointly serve as carriers, on one hand, for loading Cu, and on the other hand, for loading a reaction substrate and providing alkaline sites; by adding a metal carrier M on the basis of the Cu / MgO catalyst, the metal carrier M can further improve the alkaline sites of the carrier, and in the preparation process of the catalyst, the metal carrier M can be partially reduced to form oxygen vacancies on the surface, which is favorable for the adsorption of a substrate on the catalyst, and thus the selectivity of the catalyst is improved; the catalyst has good hydrogenolysis activity and selectivity to furfural under relatively mild conditions, and no obvious polymer is produced.

Description

Technical Field

[0001] The invention belongs to the technical field of catalysts, and in particular relates to a metal-modified Cu / MgO catalyst, a preparation method thereof, and application thereof in preparing pentanediol from furfural. Background Art

[0002] Biomass is a renewable carbon resource with advantages such as low price, abundant resources, and a short renewable cycle. It is often used as a reliable source to replace fossil resources in the production of fuels and chemicals and can be converted into high-value-added compounds, chemical platform molecules, etc. Among them, furfural, as an important organic chemical raw material obtained by biomass hydrolysis, is the most important derivative of the furan ring system. Currently, furfural is produced by acidic hydrolysis of hemicellulose from agricultural and forestry waste, with an annual global production of more than 650,000 tons. Furfural has active chemical properties and can be converted into a variety of chemicals. It is widely used in industries such as medicine and pesticides. Furfural hydrogenation can produce important industrial products such as furfuryl alcohol, 2-methylfuran, 2-methyltetrahydrofuran, tetrahydrofurfuryl alcohol, 1,5-pentanediol, and 1,2-pentanediol. Among them, pentanediol is an important chemical raw material.

[0003] 1,2-Pentanediol is a key organic raw material. 80% of global 1,2-pentanediol production is used in the synthesis of the fungicide propiconazole. Due to its excellent moisturizing and antiseptic properties, it is also widely used in high-end skincare, baby care, sunscreen, and other cosmetic products. 1,2-Pentanediol is also commonly used in polyester fibers, surfactants, pharmaceuticals, and other related fields. 1,5-Pentanediol is an important pharmaceutical intermediate with broad application prospects in a variety of fields, including plasticizers, cosmetics, and synthetic fragrances. Industrially, 1,2-Pentanediol and 1,5-Pentanediol are primarily obtained through selective redox reactions of petroleum. However, this process is complex, has low yields of the target product, and petroleum is non-renewable, making large-scale production difficult. Therefore, the selective hydrogenolysis of furfural to produce 1,2-Pentanediol and 1,5-Pentanediol offers considerable advantages. In this reaction, furfural is first hydrogenated to furfuryl alcohol, and then furanol undergoes hydrogenolysis, the C5-O1 bonds are broken to form 1,2-pentanediol, and the C2-O1 bonds are broken to form 1,5-pentanediol. Since all reactant atoms are utilized, the atomic utilization rate of this process is very high.

[0004] However, furfural hydrogenolysis has multiple parallel or series reaction pathways, with chain breaks and hydrogenations at multiple C=C bonds, CO bonds, COC bonds, and other positions, resulting in numerous by-products. Therefore, it is challenging to selectively hydrogenate and ring-open to prepare 1,2-pentanediol and 1,5-pentanediol. Currently, the preparation of 1,2-pentanediol and 1,5-pentanediol by furfural hydrogenolysis generally uses precious metal catalysts such as Ru, Pt, and Pd, which have problems such as low yield of target products, harsh reaction conditions, and high catalyst preparation costs. SUMMARY

[0005] To solve the above technical problems, the application provides a metal-modified Cu / MgO catalyst, a preparation method thereof and application thereof in the preparation of pentanediol from furfural.

[0006] To achieve the above object, the application provides the following technical solutions.

[0007] The application provides a metal-modified Cu / MgO catalyst, and the composition of the metal-modified Cu / MgO catalyst is Cu / MgO-M, wherein M is any one of Ca, Zn and Co, the mass of M is 2-15% of the mass of magnesium oxide, and the loading amount of Cu is 5-35% of the mass of the metal-modified Cu / MgO catalyst.

[0008] Technical principle: The metal-modified Cu / MgO catalyst provided by the application is composed of Cu, MgO and M, Cu serves as a metal active center and plays a main catalytic role in the hydrogenation of furfural, MgO and M jointly serve as a carrier, which is used for loading Cu on one hand and loading a reaction substrate and providing an alkaline site on the other hand; by adding a metal carrier M on the basis of the Cu / MgO catalyst, the metal carrier M can further improve the alkaline site of the carrier, and in the preparation process of the catalyst, the metal carrier M can be partially reduced to form oxygen vacancies on the surface, which is conducive to the adsorption of the substrate on the catalyst, and thus the selectivity of the catalyst is improved. The metal-modified Cu / MgO catalyst provided by the application has good hydrogenolysis activity and selectivity for furfural under relatively mild conditions, and no obvious polymer is produced.

[0009] Further, the M is Ca or Zn, the mass of M is 10-15% of the mass of magnesium oxide, and the loading amount of Cu is 15-30% of the mass of the metal-modified Cu / MgO catalyst.

[0010] The application provides a preparation method of the metal-modified Cu / MgO catalyst.

[0011] S1. Dissolving copper salt, magnesium salt and M salt in water to obtain a salt solution by stirring;

[0012] S2. Dissolving sodium hydroxide and sodium carbonate in water to obtain an alkali solution by stirring;

[0013] S3. Under stirring, adding the salt solution obtained in step S1 into the alkali solution obtained in step S2, and then performing aging, filtration, washing and drying to obtain a precursor;

[0014] S4. Performing calcination and reduction on the precursor obtained in step S3 in sequence to obtain the metal-modified Cu / MgO catalyst.

[0015] There is no order between step S1 and step S2.

[0016] Furthermore, in step S1, the copper salt is copper nitrate, the magnesium salt is magnesium nitrate, and the M salt is calcium nitrate, zinc nitrate or cobalt nitrate.

[0017] Furthermore, in step S1, the molar ratio of copper in the copper salt, magnesium in the magnesium salt and M in the M salt is 5:72:(1-5).

[0018] Furthermore, in step S2, the molar concentration of sodium hydroxide in the alkaline solution is 1.8 times the molar concentration of all metal cations in the salt solution, and the molar concentration of sodium carbonate is 1.8 times the molar concentration of Cu in the salt solution. 2+ twice the molar concentration.

[0019] Furthermore, in step S3, the amount of the salt solution obtained in step S1 is added until the pH value of the alkaline solution obtained in step S2 reaches 10±0.5; and / or,

[0020] The aging temperature is 70° C. and the aging time is 4 h.

[0021] Furthermore, in step S4, the calcination temperature is 500° C. and the calcination time is 4 hours; and / or,

[0022] The reduction temperature is 260° C., the reduction time is 2 h, and the reduction atmosphere is hydrogen.

[0023] The present invention also provides the use of the metal-modified Cu / MgO catalyst described in the above technical solution in the preparation of pentanediol from furfural.

[0024] Furthermore, the reaction temperature for producing pentanediol from furfural is 160° C., the initial pressure is 5 MPa, the reaction time is 8 h, and the reaction solvent is ethanol; and / or,

[0025] The pentanediol is one or both of 1,2-pentanediol and 1,5-pentanediol.

[0026] Compared with the prior art, the present invention has the following advantages and technical effects:

[0027] 1. The metal-modified Cu / MgO catalyst provided by the present invention has the advantages of high activity and high selectivity for the reaction of furfural to pentanediol, and uses non-precious metals.

[0028] 2. The preparation method of the metal-modified Cu / MgO catalyst provided by the present invention is simple to operate, easy to recycle, and the product is easy to separate and can be recycled.

[0029] 3. The reaction solvent for preparing pentanediol from furfural in the present invention is ethanol, which is cheap and widely available. It is a green solvent with the advantages of low production cost and environmental friendliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 These are XRD patterns of the Cu / MgO-10%Ca catalyst prepared in Example 2 and the Cu / MgO catalyst prepared in Comparative Example 1. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] An embodiment of the present invention provides a metal-modified Cu / MgO catalyst, wherein the composition of the metal-modified Cu / MgO catalyst is Cu / MgO-M, wherein M is any one of Ca, Zn and Co, the mass of M is 2 to 15% of the mass of magnesium oxide, and the loading amount of Cu is 5 to 35% of the mass of the metal-modified Cu / MgO catalyst.

[0035] In a preferred embodiment, the Cu loading refers to the mass ratio of Cu.

[0036] In a preferred embodiment, M is any one of Ca, Zn, and Co, preferably Ca or Zn, and more preferably Ca. The present invention uses the above-mentioned metal-modified Cu / MgO catalyst because alkaline metals can inhibit side reactions and carbon deposition, thereby improving the selectivity of pentanediol.

[0037] In a preferred embodiment, the mass of M is 2-15% of the mass of magnesium oxide, preferably 10-15%, and more preferably 10%. In the present invention, the content of M affects the selectivity of the catalyst. If the content of M is too low, the adsorption of the substrate on the catalyst is reduced, and the conversion of furfural cannot be effectively achieved. If the content of M is too high, the active sites are covered, reducing the contact between the reaction substrate and the active center, resulting in a decrease in catalytic activity.

[0038] In a preferred embodiment, the loading amount of Cu is 5-35% by mass of the metal-modified Cu / MgO catalyst, preferably 15-30%, and further preferably 30%. The Cu in the present application serves as an active component, and the loading amount thereof greatly influences the hydrogenolysis activity and selectivity of the catalyst. If the loading amount of Cu is too low, the hydrogenolysis activity of the catalyst is low, and if the loading amount of Cu is too high, the dispersion of Cu decreases, the exposure amount of active sites decreases, and the conversion of furfural decreases.

[0039] The present application provides a preparation method of the metal-modified Cu / MgO catalyst described in the above technical solution, which comprises the following steps:

[0040] S1. Dissolving a copper salt, a magnesium salt and an M salt in water to obtain a salt solution by stirring;

[0041] S2. Dissolving sodium hydroxide and sodium carbonate in water to obtain an alkali solution by stirring;

[0042] S3. Under stirring, adding the salt solution obtained in step S1 into the alkali solution obtained in step S2, and then performing aging, filtration, washing and drying to obtain a precursor;

[0043] S4. Performing calcination and reduction on the precursor obtained in step S3 in sequence to obtain the metal-modified Cu / MgO catalyst;

[0044] Steps S1 and S2 have no sequence.

[0045] In a preferred embodiment, in step S1, the copper salt is copper nitrate, the magnesium salt is magnesium nitrate, and the M salt is calcium nitrate, zinc nitrate or cobalt nitrate.

[0046] In a preferred embodiment, in step S1, the molar ratio of copper in the copper salt, magnesium in the magnesium salt and M in the M salt is 5:72:(1-5).

[0047] In a preferred embodiment, in step S2, the molar concentration of sodium hydroxide in the alkali solution is 1.8 times the molar concentration of all metal cations in the salt solution, and the molar concentration of sodium carbonate is 2 times the molar concentration of Cu 2+ in the salt solution. The molar concentration of sodium hydroxide and the molar concentration of sodium carbonate in the alkali solution are controlled in the above range in order to control the precipitation rate and the particle size and distribution at the same time. The concentration of the precipitant directly influences the precipitation rate of metal precursor ions. If the concentration is too high, the precipitation is too fast, which may form uneven particles, and if the concentration is too low, the precipitation is too slow.

[0048] In a preferred embodiment, in step S3, the salt solution obtained in step S1 is added until the pH value of the alkali solution obtained in step S2 is 10±0.5.

[0049] In a preferred embodiment, in step S3, the temperature of the aging is 70℃, and the time of the aging is 4h.

[0050] In a preferred embodiment, in step S4, the temperature of the calcination is 500℃, and the time of the calcination is 4h. During the calcination, the precursor such as carbonate, hydroxide, etc. is decomposed to generate the corresponding oxide; controlling the temperature and time of the calcination within the above range is conducive to obtaining a catalyst with good hydrogenolysis activity and selectivity, while too high calcination temperature can cause copper species to sinter, destroying the structure of the carrier, too low calcination temperature can cause the precursor to be insufficiently decomposed, and at the same time can fail to form sufficient surface basic sites, affecting the catalytic performance, too long calcination time can cause phase transition or crystallization, forming a crystal phase without catalytic activity, reducing the catalytic effect, and too short calcination time can fail to form an ideal pore structure, affecting the diffusion of reactants and products.

[0051] In a preferred embodiment, in step S4, the temperature of the reduction is 260℃, the time of the reduction is 2h, and the atmosphere of the reduction is hydrogen. During the reduction, the copper oxide is reduced to Cu 0 or Cu + ; controlling the temperature and time of the reduction within the above range is conducive to obtaining a catalyst with good hydrogenolysis activity and selectivity, while too high reduction temperature can cause copper particles to sinter, leading to increased particle size, reduced specific surface area, and reduced active sites, and thus reducing the activity of the catalyst, too low reduction temperature can cause incomplete reduction, and the copper oxide cannot be completely reduced to active metal Cu 0 , thus reducing the activity of the catalyst, too long reduction time can cause copper particles to sinter or over-reduction, causing the aggregation of copper particles or reaction with the carrier, thus reducing the activity of the catalyst, and too short reduction time can cause insufficient reduction, thus weakening the stability of the catalyst and reducing the number of active sites.

[0052] The application also provides the application of the metal-modified Cu / MgO catalyst described in the technical solution above in the preparation of pentanediol from furfural.

[0053] In a preferred embodiment, the reaction temperature for preparing pentanediol from furfural is 160℃, the initial pressure is 5MPa, the reaction time is 8h, and the reaction solvent is ethanol.

[0054] In a preferred embodiment, the pentanediol is one or both of 1,2-pentanediol and 1,5-pentanediol.

[0055] In the embodiments of the application, room temperature refers to “25±2℃”.

[0056] Unless otherwise specified, the raw materials in the embodiments of the application are obtained by commercial purchase.

[0057] Example 1

[0058] A metal-modified Cu / MgO catalyst, the composition of which is Cu / MgO-Ca, the mass of Ca being 2% of the mass of magnesium oxide, and the loading of Cu being 30% of the mass of the metal-modified Cu / MgO catalyst;

[0059] A preparation method of a metal-modified Cu / MgO catalyst, the specific steps being as follows:

[0060] S1. Dissolve copper nitrate, magnesium nitrate, and calcium nitrate in a molar ratio of 5:72:1 in 100 mL of deionized water and stir uniformly to obtain a homogeneous salt solution;

[0061] S2. Dissolve sodium hydroxide and sodium carbonate in 100 mL of deionized water to obtain a homogeneous alkali solution; wherein the molar concentration of sodium hydroxide in the homogeneous alkali solution is 1.8 times the molar concentration of all metal cations in the homogeneous salt solution of step S1, and the molar concentration of sodium carbonate is 2 times the molar concentration of Cu 2+ in the homogeneous salt solution of step S1;

[0062] S3. Under stirring, uniformly drop the homogeneous salt solution obtained in step S1 into the homogeneous alkali solution obtained in step S2 until the pH of the solution is 10±0.5 and is maintained, then age at 70℃ for 4h, then cool to room temperature, filter, wash the precipitate to neutral, and dry to obtain a precursor;

[0063] S4. Place the precursor obtained in step S3 in a muffle furnace and calcine at 500℃ for 4h, then reduce in a hydrogen atmosphere at 260℃ for 2h to obtain a metal-modified Cu / MgO catalyst, which is denoted as Cu / MgO-2%Ca.

[0064] Example 2

[0065] The difference from Example 1 is that in step S1, copper nitrate, magnesium nitrate, and calcium nitrate in a molar ratio of 5:72:5 are dissolved in 100 mL of deionized water and stirred uniformly, which is denoted as Cu / MgO-10%Ca, wherein the mass of Ca is 10% of the mass of magnesium oxide, and the loading of Cu is 30% of the mass of the metal-modified Cu / MgO catalyst.

[0066] Example 3

[0067] The difference from Example 1 is that in step S1, copper nitrate, magnesium nitrate, and zinc nitrate in a molar ratio of 5:72:1 are dissolved in 100 mL of deionized water and stirred uniformly, which is denoted as Cu / MgO-10%Zn, wherein the mass of Zn is 10% of the mass of magnesium oxide, and the loading of Cu is 30% of the mass of the metal-modified Cu / MgO catalyst.

[0068] Example 4

[0069] The difference from Example 1 is that in step S1, copper nitrate, magnesium nitrate and cobalt nitrate with a Cu:Mg:Co molar ratio of 5:72:1 are dissolved in 100 mL of deionized water and stirred uniformly, and are recorded as Cu / MgO-10%Co, wherein the mass of Co is 10% of the mass of magnesium oxide, and the loading amount of Cu is 30% of the mass of the metal-modified Cu / MgO catalyst.

[0070] Comparative Example 1

[0071] The difference from Example 1 is that in step S1, copper nitrate and magnesium nitrate with a Cu:Mg molar ratio of 5:72 are dissolved in 100 mL of deionized water and stirred uniformly, that is, without adding a third metal, and are recorded as Cu / MgO.

[0072] Comparative Example 2

[0073] The difference from Example 1 is that in step S1, copper nitrate, magnesium nitrate and zirconium chloride with a Cu:Mg:Zr molar ratio of 5:72:1 are dissolved in 100 mL of deionized water and stirred uniformly, and are recorded as Cu / MgO-10%Zr, wherein the mass of Zr is 10% of the mass of magnesium oxide, and the loading amount of Cu is 30% of the mass of the metal-modified Cu / MgO catalyst.

[0074] Comparative Example 3

[0075] The difference from Example 1 is that in step S1, copper nitrate, magnesium nitrate and cerium nitrate with a Cu:Mg:Ce molar ratio of 5:72:1 are dissolved in 100 mL of deionized water and stirred uniformly, and are recorded as Cu / MgO-10%Ce, wherein the mass of Ce is 10% of the mass of magnesium oxide, and the loading amount of Cu is 30% of the mass of the metal-modified Cu / MgO catalyst.

[0076] Comparative Example 4

[0077] The difference from Example 1 is that in step S1, copper nitrate, magnesium nitrate and iron nitrate with a Cu:Mg:Fe molar ratio of 5:72:1 are dissolved in 100 mL of deionized water and stirred uniformly, and are recorded as Cu / MgO-10%Fe, wherein the mass of Fe is 10% of the mass of magnesium oxide, and the loading amount of Cu is 30% of the mass of the metal-modified Cu / MgO catalyst.

[0078] Figure 1 The XRD patterns of the Cu / MgO-10%Ca catalyst prepared in Example 2 and the Cu / MgO catalyst prepared in Comparative Example 1 are shown in FIG. 1. From the XRD patterns, it can be seen that the Cu / MgO-10%Ca catalyst prepared in Example 2 has a higher crystallinity than the Cu / MgO catalyst prepared in Comparative Example 1. Figure 1As can be seen, the catalysts prepared in Example 2 and Comparative Example 1 both have obvious CuO and MgO diffraction peaks (copper oxide and magnesium oxide have similar reflection characteristic peak positions), but the diffraction peak of the Cu / MgO-10%Ca catalyst is sharper and the crystallinity is perfect. In addition, no obvious diffraction peak related to Ca is observed in the XRD spectrum of the Cu / MgO-10%Ca catalyst, mainly because of the low content of Ca.

[0079] The catalysts prepared in Examples 1-4 and Comparative Examples 1-4 were put into a 25 mL high-pressure mechanical reactor for furfural hydrogenation reaction, specifically, 0.1 g of catalyst, 0.5 g of furfural and 12 mL of ethanol were placed in the high-pressure mechanical reactor, after leak detection, high-purity hydrogen was used to replace the air in the reactor, under the conditions of a reaction temperature of 160°C, an initial pressure of 5 MPa and a stirring speed of 800 rpm, continuous reaction was carried out for 8 h, after the reaction was completed, until the reaction system was cooled to room temperature, the remaining gas in the reactor was discharged, the liquid phase product was taken out, and two phases of liquid phase and solid phase catalyst were obtained after centrifugation. The liquid phase was analyzed by gas chromatography-mass spectrometry and gas chromatography for qualitative and quantitative analysis, and the results are shown in Table 1.

[0080] Table 1

[0081]

[0082]

[0083] As can be seen from Table 1, the selectivity of the metal-modified Cu / MgO catalyst prepared in the examples to pentanediol can reach 70.13%, while the selectivity of the catalyst obtained in Comparative Example 1 without adding a third metal to pentanediol is only 48.77%, and the selectivity of the catalysts obtained in Comparative Examples 2-4 changes the type of the third metal, and the selectivity of the catalysts to pentanediol also decreases.

[0084] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements easily thought of by those skilled in the art within the technical range disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. Application of a metal-modified Cu / MgO catalyst in the preparation of pentanediol from furfural, characterized in that: The composition of the metal-modified Cu / MgO catalyst is Cu / MgO-M, wherein M is Ca, the mass of M is 10-15% of the mass of magnesium oxide, and the loading amount of Cu is 15-30% of the mass of the metal-modified Cu / MgO catalyst.

2. The use of the metal-modified Cu / MgO catalyst in furfural to pentanediol according to claim 1, characterized in that: The preparation method of the metal-modified Cu / MgO catalyst comprises the following steps: S1. Dissolve the copper salt, magnesium salt and M salt in water and stir to obtain a salt solution; S2. Sodium hydroxide and sodium carbonate were dissolved in water and stirred to obtain an alkaline solution; S3. Under stirring, the salt solution obtained in step S1 is added to the alkaline solution obtained in step S2, and then aged, filtered, washed and dried to obtain a precursor; S4. The precursor obtained in step S3 is sequentially calcined and reduced to obtain the metal-modified Cu / MgO catalyst; There is no order between step S1 and step S2.

3. The use of the metal-modified Cu / MgO catalyst in furfural to pentanediol according to claim 2, characterized in that: In step S1, the copper salt is copper nitrate, the magnesium salt is magnesium nitrate, and the M salt is calcium nitrate.

4. The use of the metal-modified Cu / MgO catalyst in the preparation of pentanediol from furfural according to claim 2, characterized in that: In step S1, the molar ratio of copper in the copper salt, magnesium in the magnesium salt and M in the M salt is 5:72:(1-5).

5. The use of the metal-modified Cu / MgO catalyst in the preparation of pentanediol from furfural according to claim 2, characterized in that: In step S2, the molar concentration of sodium hydroxide in the alkaline solution is 1.8 times the molar concentration of all metal cations in the salt solution, and the molar concentration of sodium carbonate is 1.8 times the molar concentration of Cu in the salt solution. 2+ twice the molar concentration.

6. Use of the metal-modified Cu / MgO catalyst in the preparation of pentanediol from furfural according to claim 2, characterized in that: In step S3, the amount of the salt solution obtained in step S1 is added until the pH value of the alkaline solution obtained in step S2 reaches 10±0.5; and / or, The aging temperature is 70° C., and the aging time is 4 h.

7. Use of the metal-modified Cu / MgO catalyst in the preparation of pentanediol from furfural according to claim 2, characterized in that: In step S4, the calcination temperature is 500° C. and the calcination time is 4 hours; and / or, The reduction temperature is 260° C., the reduction time is 2 h, and the reduction atmosphere is hydrogen.

8. Use of the metal-modified Cu / MgO catalyst in the preparation of pentanediol from furfural according to claim 1, characterized in that: The reaction temperature for preparing pentanediol from furfural is 160° C., the initial pressure is 5 MPa, the reaction time is 8 h, and the reaction solvent is ethanol; and / or, The pentanediol is one or both of 1,2-pentanediol and 1,5-pentanediol.

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