A transition metal phosphide, its preparation method and application

Abstract

This invention provides a method for preparing transition metal phosphides, comprising: mixing a transition metal salt solution with a nitrogen-containing heterocyclic compound, adding a phosphorus source solution, mixing and stirring to react, and drying and calcining the product to obtain the transition metal phosphide. This invention obtains transition metal phosphides through a one-step reaction and calcination. The preparation process is simple, easy to operate, and operates under mild conditions. Process parameters are easy to control, making it suitable for the preparation of various transition metal phosphides. It has a wide range of applications, a relatively low pyrolysis temperature, and the obtained phosphides can be used in various hydrogenation processes such as hydrodesulfurization and hydrodeoxygenation, exhibiting good catalytic effects, with organic matter deoxygenation rates and deoxidation rates both exceeding 95%.

Description

Technical Field

[0001] This invention relates to a hydrogenation catalyst, specifically a transition metal phosphide catalytic material, belonging to the field of catalytic material technology. Background Technology

[0002] With the continuous decline in crude oil quality and increasingly stringent environmental protection requirements worldwide and in my country, people are constantly improving and refining existing oil processing technologies to obtain products that meet the required standards. Crude oil contains a large number of impurities such as nitrogen, oxygen, sulfur, and metals. The presence of these impurities not only makes petroleum products less stable and affects their secondary processing, but also generates pollution during the application of oil products, causing harm to human health and the ecological environment.

[0003] Hydrotreating is an effective way to reduce impurities in oil products. It can remove nitrogen, oxygen, and sulfur, as well as saturate aromatics, reducing their content and improving oil quality. A key aspect of hydrotreating technology is the preparation of hydrotreating catalysts; developing highly active, low-cost catalysts is paramount. Transition metal phosphides possess noble metal-like properties and are used in numerous hydrogen-related reactions. Transition metal phosphides are compounds formed by phosphorus atoms inserting into the metal lattice. Phosphorus forms covalent or metallic bonds with transition metal elements. The relatively large size of phosphorus atoms leads to the formation of octahedral coordination structures around them after bonding with transition metals, placing them at the center. This results in a structure closer to spherical than the layered structure of sulfides, exposing more active sites in catalytic reactions. This allows larger reactants to more easily access the active sites on the catalyst surface, thus exhibiting excellent catalytic performance in many reactions.

[0004] There are various methods for preparing transition metal phosphides. In general, the main methods for preparing phosphides include the following: (1) reduction by inorganic phosphate and nickel ammonium phosphate; (2) decomposition of organometallic compounds; (3) low-temperature hydrogen plasma preparation method, which has a lower preparation temperature; (4) decomposition of organometallic compounds; (5) solvothermal synthesis method; (6) direct combination of metal and red phosphorus under high temperature and protective atmosphere; (7) synthesis of nano-phosphate precursors; (8) electrolysis of molten salt; and (9) reaction of metal halides with phosphine, etc. These methods all have some problems, such as high reduction temperature, expensive raw materials, and complicated operation. In summary, the research on the preparation methods of transition metal phosphides is crucial for the application of phosphides. Simple and easy preparation methods are a prerequisite for the widespread application of catalysts. Different preparation methods will also have a certain impact on the performance of catalysts.

[0005] CN113061930A discloses a method for preparing transition metal phosphides. The method involves dissolving a transition metal salt and an organic ligand in a solvent, adding a phytic acid solution, and then performing a solvothermal reaction to obtain a phytic acid-doped MOF material. This material is then subjected to pyrolysis and carbonization to obtain the transition metal phosphide. The transition metals used in this method include Fe, Co, and Ni. The phosphide is obtained through hydrothermal treatment. The process is somewhat complex, requiring heating and is relatively time-consuming and energy-intensive. CN111185206A also discloses a method for preparing a chestnut-shaped transition metal phosphide catalyst, applicable to the preparation of various transition metal phosphides (Fe, Co, Ni, Cu, Cr, Pt, Pd, Mo, W, etc.). The preparation method also employs a hydrothermal approach, but with a relatively high calcination temperature (600~800℃). CN112108165A discloses a method for preparing a nitrogen and phosphorus dual-doped carbon-coated molybdenum phosphide catalyst. Phytic acid, ammonium molybdate tetrahydrate, and melamine are used as reactants. After dissolving in water and drying at low temperature, a precursor is obtained. This precursor is then calcined at high temperature (800-1000℃) to obtain the nitrogen and phosphorus dual-doped carbon-coated molybdenum phosphide catalyst. While this method is relatively simple, the calcination temperature is too high, and the resulting molybdenum phosphide catalyst has a carbon coating. In electrocatalytic reactions, the carbon coating is beneficial for increasing conductivity, but in hydrogenation reactions, the presence of the external carbon layer can easily cover reaction sites, thus limiting the catalyst's hydrogenation activity. CN107999105A discloses a method for preparing a porous rod-shaped molybdenum phosphide hydrogen evolution catalyst. This method uses degreased cotton as a template agent and a mixture of ammonium molybdate and ammonium dihydrogen phosphate as the metal and molybdenum sources. The degreased cotton, after absorbing the mixture, is dried and kept at a certain temperature for a period of time to obtain a molybdenum phosphide precursor. Subsequently, the catalyst is obtained by keeping it at a certain temperature under a reducing atmosphere for a period of time. This method also involves high calcination temperatures (700~900℃), numerous steps, a long cycle, and low purity of the obtained molybdenum phosphide. CN108772089A discloses a method for preparing a nitrogen-doped, carbon-linked high-performance molybdenum phosphide hydrogen evolution catalyst with a neural network structure. This method involves dissolving ammonium molybdate, ammonium dihydrogen phosphate, and urea in deionized water, stirring and aging at 80℃, then placing melamine resin foam in the solution for adsorption and drying to obtain a molybdenum phosphide precursor. Finally, the precursor is calcined at high temperature (850~900℃) under a nitrogen atmosphere to obtain a high-performance molybdenum phosphide hydrogen evolution catalyst. The metal content of the catalyst prepared by this method depends on the adsorption of metal solution by melamine resin foam, which is uncertain and cannot ensure uniformity and stability. In addition, the high calcination temperature limits its application.CN101992109A discloses a transition metal phosphide hydrogenation refining catalyst and its preparation method. Using mesoporous carbon as a support, one or more transition metal phosphate solutions (Fe, Co, Ni, W, Mo, Ru, Pd, and Pt) are impregnated with the catalyst. After drying and calcination, one or more metals or metal oxides of a second transition metal element (Ti, Ce, La, Y, Zn, and Nb) are impregnated with the catalyst. The catalyst is then dried, calcined, and reduced to obtain the final catalyst. This method uses secondary metal loading to prepare the catalyst, which can easily lead to uneven distribution of the active metal on the catalyst surface. Furthermore, the multiple drying and calcination processes increase the catalyst preparation cost. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a transition metal phosphide, its preparation method, and its applications. The preparation method of this invention is simple, mild, easy to implement, and has a wide range of applications. It is suitable for the preparation of single-metal and multi-metal phosphides, and the resulting phosphides have high purity, good crystallinity, and controllable phase.

[0007] To achieve the above-mentioned technical objectives, the technical solution of the present invention is as follows:

[0008] The first aspect of the present invention provides a method for preparing transition metal phosphides, comprising the following steps: mixing a salt solution of a transition metal with a nitrogen-containing heterocyclic compound, adding a solution containing a phosphorus source to the mixture, stirring and reacting the mixture, and drying and calcining the product to obtain the transition metal phosphide.

[0009] Furthermore, in one embodiment of the present invention, the nitrogen-containing heterocyclic compound is selected from at least one of imidazole and its derivatives, pyrazole and its derivatives, triazole and its derivatives, and tetraazole and its derivatives. Preferably, it is selected from one of imidazole and aminotriazole.

[0010] Furthermore, in one embodiment of the present invention, the transition metal salt solution is selected from at least one water-soluble salt of Fe, Co, Ni, Cu, Ru, Rh, Pd, Pt, and Ag. Preferably, at least one water-soluble salt of Fe, Co, and Ni is selected.

[0011] Furthermore, in one embodiment of the present invention, the phosphorus source is selected from at least one of ammonium phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, and phytic acid, more preferably, ammonium phosphate and / or phytic acid.

[0012] Furthermore, in one embodiment of the present invention, in the reaction system, the molar ratio of the metal to the nitrogen-containing heterocyclic compound, based on the metal element of the transition metal salt, is 0.6 to 2:1.

[0013] Furthermore, in one embodiment of the present invention, the molar ratio of the transition metal salt to the phosphorus source in the reaction system is 0.3 to 3:1.

[0014] Furthermore, in one embodiment of the present invention, the reaction temperature is -20~30°C; the reaction time is 0.5~6h, preferably 1~5h.

[0015] Furthermore, in one embodiment of the present invention, the drying temperature is 60~120°C and the drying time is 3~8 hours.

[0016] Furthermore, in one embodiment of the present invention, the calcination atmosphere is selected from any one of a nitrogen atmosphere, an inert gas atmosphere, a hydrogen / nitrogen atmosphere, and a hydrogen / inert gas atmosphere, wherein the hydrogen gas fraction in the hydrogen / nitrogen atmosphere and the hydrogen / inert gas atmosphere is 5-50%. Preferably, it is a nitrogen atmosphere, an argon atmosphere, a hydrogen / nitrogen atmosphere, or a hydrogen / helium atmosphere.

[0017] Furthermore, in one embodiment of the present invention, the calcination temperature is 200~600℃; the calcination holding time after reaching the calcination temperature is 1~4h. As a more preferred embodiment, the calcination adopts a slow heating method, with a heating rate of 0.5~5℃ / min.

[0018] Furthermore, in one embodiment of the present invention, the stirring is one of magnetic stirring or mechanical stirring.

[0019] Furthermore, in one embodiment of the present invention, after the reaction is complete, the solid product is collected by filtration, vacuum filtration, or centrifugation. The collection process also includes a washing step, using deionized water and / or ethanol, for a total of 3 to 7 washes.

[0020] The second aspect of this invention aims to provide a transition metal phosphide prepared by the above-described method. In the preparation method of this invention, a nitrogen-containing heterocyclic compound is added, and a transition metal phosphide is obtained through a one-step reaction and calcination. Furthermore, different crystal forms of phosphides can be obtained by controlling the calcination temperature, which is relatively low.

[0021] The technical objective of the third aspect of this invention is to provide a method for deoxygenating oxygen-containing organic matter, which uses the aforementioned transition metal phosphides as catalysts.

[0022] Specifically, the transition metal phosphide is used in the catalytic hydrodeoxygenation process of oxygen-containing organic compounds, which are furfural, phenol, furan, benzofuran, dibenzofuran, anisole, diphenyl ether, fatty acids, fatty acid esters, and other oxygen-containing compounds in biomass-based diesel feedstocks. The hydrodeoxygenation reaction is carried out at a temperature of 250-360°C and a pressure of 0.1-4 MPa.

[0023] The technical objective of the fourth aspect of this invention is to provide a method for desulfurizing sulfur-containing organic compounds, using the aforementioned transition metal phosphides as catalysts.

[0024] Specifically, the transition metal phosphide is used in the catalytic hydrodesulfurization process of sulfur-containing organic compounds, such as thiophene, benzothiophene, dibenzothiophene, or 4,6-dimethylbenzothiophene. The hydrodesulfurization reaction is carried out at a temperature of 320-400°C and a pressure of 1-6 MPa.

[0025] The technical solution of the present invention has the following technical effects:

[0026] The transition metal phosphides of the present invention are simple to prepare, easy to operate, mild under mild conditions, and easy to control process parameters. They are applicable to the preparation of various transition metal phosphides, have a wide range of applications, and have relatively low pyrolysis temperatures. The resulting phosphides can be used in various hydrogenation processes such as hydrodesulfurization and hydrodeoxygenation, and exhibit good catalytic effects, with organic matter deoxygenation and desulfurization rates both exceeding 95%. Attached Figure Description

[0027] Figure 1 The XRD pattern of nickel phosphide obtained in Example 1;

[0028] Figure 2 The XRD pattern of nickel phosphide obtained in Example 2;

[0029] Figure 3 The image shows the XRD pattern of cobalt phosphide obtained in Example 3. Detailed Implementation Plan

[0030] The present invention will be described in detail below through embodiments, but the present invention is not limited to these embodiments.

[0031] Example 1

[0032] 0.2908 g (1 mmol) of nickel nitrate hexahydrate was dissolved in 10 mL of deionized water. After complete dissolution, 0.0841 g (1 mmol) of aminotriazole was added to the solution to obtain a clear solution. 0.0551 g (0.42 mmol) of diammonium hydrogen phosphate was dissolved in 10 mL of deionized water. The above phosphorus source solution was added to the mixture of nickel source and aminotriazole, and the reaction was stirred at room temperature for 2 h. The product was filtered, washed with deionized water, dried at 80 °C for 4 h, and then heated to 400 °C at a heating rate of 5 °C / min under an inert atmosphere with an argon flow rate of 40 mL / min. The temperature was held constant for 2 h, the gas was turned off, and the mixture was allowed to cool naturally to obtain nickel phosphide catalyst. The obtained nickel phosphide material was characterized by XRD, as shown below. Figure 1 .

[0033] Figure 1 It can be seen that the obtained nickel phosphide crystal form is Ni. 12 P5, and this nickel phosphide catalyst has high crystallinity and high purity, Ni 12 The P5 content is 100%.

[0034] Example 2

[0035] 0.2908 g (1 mmol) of nickel nitrate hexahydrate was dissolved in 10 mL of deionized water. After complete dissolution, 0.0841 g (1 mmol) of aminotriazole was added to the solution to obtain a clear solution. 0.0661 g (0.5 mmol) of diammonium hydrogen phosphate was dissolved in 10 mL of deionized water. The above phosphorus source solution was added to the mixture of nickel source and aminotriazole, and the reaction was stirred at room temperature for 2 h. The product was filtered, washed with deionized water, dried at 80 °C for 4 h, and then heated to 500 °C at a heating rate of 5 °C / min under an inert atmosphere with an argon flow rate of 40 mL / min. The temperature was held for 2 h, the gas was turned off, and the mixture was allowed to cool naturally to obtain nickel phosphide catalyst. The obtained nickel phosphide material was characterized by XRD, as shown below. Figure 2 .

[0036] Figure 2 It can be seen that the obtained nickel phosphide crystal form is Ni2P, and the obtained nickel phosphide catalyst has a complete crystal structure, high purity, and a Ni2P phase content of 100%.

[0037] Example 3

[0038] 0.2910 g (1 mmol) of cobalt nitrate hexahydrate was dissolved in 10 mL of deionized water. After complete dissolution, 0.0841 g (1 mmol) of aminotriazole was added to the cobalt solution to obtain a clear solution. 0.0661 g (0.5 mmol) of diammonium hydrogen phosphate was dissolved in 10 mL of deionized water. The above phosphorus source solution was added to the mixture of cobalt source and aminotriazole, and the reaction was stirred at room temperature for 2 h. The product was filtered, washed with deionized water, dried at 80 °C for 4 h, and then heated to 500 °C at a heating rate of 5 °C / min under an inert atmosphere with an argon flow rate of 40 mL / min. The temperature was held for 2 h, the gas was turned off, and the mixture was allowed to cool naturally to obtain cobalt phosphide catalyst. The obtained cobalt phosphide material was characterized by XRD, as shown below. Figure 3 .

[0039] Figure 3 It can be seen that the obtained cobalt phosphide crystal form is Co2P, and the obtained cobalt phosphide catalyst has a complete crystal structure, high purity, and a Co2P phase content of 100%.

[0040] Example 4

[0041] 0.2908 g (1 mmol) of nickel nitrate hexahydrate was dissolved in 10 mL of deionized water. After complete dissolution, 0.068 g (1 mmol) of imidazole was added to the solution to obtain a clear solution. 0.0661 g (0.5 mmol) of diammonium hydrogen phosphate was dissolved in 10 mL of deionized water. The above phosphorus source solution was added to the mixture of nickel source and imidazole, and the mixture was stirred at room temperature for 2 h. The product was filtered, washed with deionized water, dried at 80 °C for 4 h, and heated to 500 °C at a heating rate of 5 °C / min under an inert atmosphere with an argon flow rate of 40 mL / min. The temperature was held at 500 °C for 2 h, the gas was turned off, and the mixture was allowed to cool naturally to obtain the nickel phosphide catalyst. Similarly, the obtained nickel phosphide catalyst was a high-purity Ni2P phase.

[0042] Example 5

[0043] 0.4040 g (1 mmol) of ferric nitrate hexahydrate was dissolved in 10 mL of deionized water. After complete dissolution, 0.0841 g (1 mmol) of aminotriazole was added to the iron solution to obtain a clear solution. 0.4624 g (0.35 mmol) of diammonium hydrogen phosphate was dissolved in 10 mL of deionized water. The above phosphorus source solution was added to the mixture of iron source and aminotriazole, and the mixture was stirred at room temperature for 2 h. The product was filtered, washed with deionized water, dried at 80 °C for 4 h, and then heated to 400 °C at a rate of 5 °C / min under an inert atmosphere with an argon flow rate of 40 mL / min. The temperature was maintained for 2 h, the gas was turned off, and the mixture was allowed to cool naturally to obtain the iron phosphide catalyst. The obtained iron phosphide catalyst was a high-purity Fe3P phase.

[0044] Example 6

[0045] 0.2020 g (0.5 mmol) of ferric nitrate nonahydrate and 0.5816 g (2 mmol) of nickel nitrate hexahydrate were dissolved in 30 mL of deionized water. After complete dissolution, 0.4205 g (5 mmol) of aminotriazole was added to the above mixed solution, resulting in a dark reddish-brown clear solution. 0.0793 g (0.6 mmol) of diammonium hydrogen phosphate was dissolved in 20 mL of deionized water. The above phosphorus source solution was added to the mixture of metal source and aminotriazole, and the reaction was stirred at room temperature for 2 h. The product was filtered, washed with deionized water, dried at 80 °C for 4 h, and heated to 500 °C at a heating rate of 5 °C / min under an inert atmosphere with an argon flow rate of 40 mL / min. The temperature was held at 500 °C for 2 h, the gas was turned off, and the mixture was allowed to cool naturally to obtain a nickel-iron bimetallic phosphide catalyst. The obtained bimetallic phosphide phase was a high-purity FeNi2P phase.

[0046] Comparative Example 1

[0047] 0.1766 g of ammonium heptamolybdate tetrahydrate was dissolved in 10 mL of deionized water. After complete dissolution, 0.0841 g of aminotriazole was added to the solution, resulting in a clear solution that gradually became turbid with prolonged stirring. 0.1982 g of diammonium hydrogen phosphate was dissolved in 10 mL of deionized water. The phosphorus source solution was added to the mixture of molybdenum source and aminotriazole, rapidly forming a precipitate. Stirring was continued at room temperature for 1 hour. The product was filtered, washed with deionized water, and dried at 80°C for 4 hours. Under a reducing atmosphere of 40 mL / min argon and 20 mL / min hydrogen, the temperature was increased to 550°C at a rate of 5°C / min and held at that temperature for 4 hours. The gas was then turned off, and the mixture was allowed to cool naturally to obtain the molybdenum-based catalyst. This process is a co-precipitation process, resulting in an inhomogeneous precursor. The resulting phosphide phase is complex and not singular, mainly consisting of molybdenum carbide with a small amount of molybdenum phosphide doped in.

[0048] Example 7

[0049] The nickel phosphide catalyst from Example 2 was applied to the hydrodesulfurization reaction of thiophene. 0.1 g of nickel phosphide catalyst was placed in the isothermal section of a fixed-bed reactor and supported at both ends with fine quartz sand (20-40 mesh). It was pretreated at 400°C and 4 MPa hydrogen pressure for 2 hours. Then, the temperature was lowered to 330°C, and the hydrodesulfurization reaction of a 1.5% thiophene n-decane solution was carried out at a hydrogen-to-oil ratio of 400. After stabilization for 12 hours, the contact time was changed and samples were taken. The samples were qualitatively analyzed by mass spectrometry and quantitatively analyzed by gas chromatography. The desulfurization rate was calculated to be 99.3%.

[0050] Example 8

[0051] The nickel phosphide catalyst from Example 2 was applied to the hydrodesulfurization reaction of dibenzothiophene. 0.2 g of nickel phosphide catalyst was placed in the isothermal section of a fixed-bed reactor and supported at both ends with fine quartz sand (20-40 mesh). It was pretreated at 400°C and 4 MPa hydrogen pressure for 2 hours. Then, the temperature was lowered to 350°C to carry out the hydrodesulfurization reaction of a 3% dibenzothiophene decahydronaphthalene solution. After stabilization for 12 hours, the contact time was changed and samples were taken. The samples were qualitatively analyzed by mass spectrometry and quantitatively analyzed by gas chromatography. The desulfurization rate was calculated to be 98.7%.

[0052] Example 9

[0053] The nickel phosphide catalyst from Example 2 was applied to the hydrogenation reaction of furfural. 0.2 g of nickel phosphide catalyst was placed in the isothermal section of a fixed-bed reactor and supported at both ends with fine quartz sand (20-40 mesh). It was pretreated at 400°C and 1 MPa hydrogen pressure for 2 hours. Then, the temperature was lowered to 240°C to carry out hydrogenation and deoxygenation reaction on a 5% furfural n-decane solution. After stabilization for 12 hours, the contact time was changed and samples were taken. The samples were qualitatively analyzed by mass spectrometry and quantitatively analyzed by gas chromatography. The conversion rate of the products was close to 100%, and the deoxygenation rate was 98.9%.

[0054] Example 10

[0055] The nickel phosphide catalyst from Example 1 was applied to the hydrodeoxygenation reaction of diphenyl ether. 0.2 g of nickel phosphide catalyst was placed in the isothermal section of a fixed-bed reactor and supported at both ends with fine quartz sand (20-40 mesh). It was pretreated at 400°C and 4 MPa hydrogen pressure for 2 hours. Then, the temperature was lowered to 320°C to carry out the hydrodeoxygenation reaction of a 5% phenol-n-decane solution. After stabilization for 12 hours, the contact time was changed and samples were taken. The samples were qualitatively analyzed by mass spectrometry and quantitatively analyzed by gas chromatography. The conversion rate of the products was close to 100%, and the deoxygenation rate was as high as 99.5%.

Claims

1. A method for producing a transition metal phosphide, characterized by, It comprises the following contents: The transition metal salt solution is mixed with a nitrogen-containing heterocyclic compound, a solution containing a phosphorus source is added, and the mixture is stirred and reacted at a temperature of-20-30℃. The product is dried and calcined to obtain a transition metal phosphide; The transition metal salt solution is selected from at least one of water-soluble salts of Fe, Co, Ni, Cu, Ru, Rh, Pd, Pt and Ag; The nitrogen-containing heterocyclic compound is selected from at least one of imidazole and its derivatives, pyrazole and its derivatives, triazole and its derivatives, and tetrazole and its derivatives; The phosphorus source is selected from at least one of ammonium phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate and phytic acid; The molar ratio of the metal element of the transition metal salt to the nitrogen-containing heterocyclic compound is 0.6-2:1; The molar ratio of the metal element of the transition metal salt to the phosphorus element in the phosphorus source is 0.3-3:

1.

2. The production method according to claim 1, characterized by, The nitrogen-containing heterocyclic compound is selected from one of imidazole and aminotriazole.

3. The preparation method according to claim 1, characterized in that, The reaction time is 0.5-6h.

4. The method of claim 1, wherein, The drying temperature is 60-120℃, and the time is 3-8h.

5. The preparation method according to claim 1, characterized in that, The calcination atmosphere is selected from any one of nitrogen atmosphere, inert gas atmosphere, hydrogen / nitrogen atmosphere and hydrogen / inert gas atmosphere, wherein the volume fraction of hydrogen in the hydrogen / nitrogen atmosphere and the hydrogen / inert gas atmosphere is 5-50%.

6. The method of claim 1, wherein, The calcination temperature is 200-600℃, and the constant temperature time after the temperature is raised to the calcination temperature is 1-4h.

7. The preparation method according to claim 6, characterized in that, The calcination adopts a slow heating mode, and the heating rate is 0.5-5℃ / min.

8. A transition metal phosphide prepared by the method of any one of claims 1-7.

9. A method for deoxygenation of oxygen-containing organic matter, which uses the transition metal phosphide of claim 8 as a catalyst.

10. The method of claim 9, wherein, The transition metal phosphide catalyzes the hydrogenation and deoxygenation process of the oxygen-containing organic matter, and the oxygen-containing organic matter is an oxygen-containing compound in furfural, phenol, furan, benzofuran, dibenzofuran, anisole, diphenyl ether, fatty acid, fatty acid ester and other biomass-based diesel raw materials.

11. A method for desulfurization of sulfur-containing organic matter, which uses the transition metal phosphide of claim 8 as a catalyst.

12. The method of claim 11, wherein, The transition metal phosphide catalyzes the hydrogenation and desulfurization process of the sulfur-containing organic matter, and the sulfur-containing organic matter is thiophene, benzothiophene, dibenzothiophene or 4,6-dimethylbenzothiophene.

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