1057 results about "Phosphine" patented technology

The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.

To provide a method for producing a modified resin that allows efficient production of a desired modified resin by enabling smooth progress of a modification reaction of a resin having an epoxy group by using a tertiary phosphine as a catalyst.SOLUTION: A method for producing a modified resin comprises a step (A-1) of reacting a nucleophile having no polymerizable unsaturated bond with a resin containing an epoxy group, under the presence of a catalyst containing a tertiary phosphine and under an atmosphere in which the oxygen concentration of a gas phase part within a reaction vessel is less than 2 vol.%.SELECTED DRAWING: None

A preparation method for a lithium manganese iron phosphate positive electrode material, comprising the following steps: (1) uniformly stirring an iron source, a phosphorus source, a lithium source and a dispersing agent in water, adding a manganese source, and uniformly mixing same to obtain a precursor pre-slurry; and (2) adjusting the solid content of the precursor pre-slurry to reach a target solid content A, the target solid content A satisfying 30 wt% ≤ A ≤ 60 wt%; (3) carrying out primary grinding treatment on the precursor slurry obtained in step (2); and (4) adding an organic phosphine scale and corrosion inhibitor to the precursor slurry, dissolving same, then drying the obtained slurry, and performing sintering and crushing to obtain the lithium manganese iron phosphate positive electrode material. Also provided is a positive electrode material prepared by the method.

The invention provides a method for synthesizing 1, 2-bis (4-vinyl phenyl) ethane, which comprises the following steps: adding a first solvent, methyl triphenyl phosphine halide and strong alkali into a reaction flask, and uniformly stirring to obtain a first mixed solution; heating the first mixed solution and carrying out reflux reaction for 1 hour; dropwise adding a 1, 2-bis (p-formaldehyde phenyl) ethane solution until the reflux reaction is finished to obtain a second mixed solution; reducing the temperature of the second mixed solution to room temperature, and adjusting the pH value of the second mixed solution to obtain a first solution; layering the first solution, and taking an organic layer; adding a polymerization inhibitor into the organic layer to obtain a second solution; concentrating the second solution to obtain a 1, 2-bis (4-vinyl phenyl) ethane crude product; adding a poor solvent into the crude product, stirring and crystallizing; filtering the crystal to obtain a filter cake, adding a second solvent into the filter cake, and washing and drying the filter cake to obtain 1, 2-bis (4-vinyl phenyl) ethane; the method for synthesizing the BVPE is simple and low in raw material cost, and the synthesized BVPE is high in purity and free of product isomeride.

The invention discloses a graphite piece silicon carbide coating and a preparation method thereof, and belongs to the technical field of inorganic non-metallic materials. The method comprises the following steps: firstly, carrying out surface polishing, cleaning and drying pretreatment on a graphite piece; then a solution containing phosphinazine functionalized silazane and a boron-silicon carlamide compound is adopted for spraying the pretreated graphite piece, drying and curing are conducted, and a surface modification layer is formed; and finally, placing the surface-modified graphite piece in chemical vapor deposition equipment, and depositing at specific temperature, pressure and atmosphere to form the silicon carbide coating. According to the method, uniform nucleation and crystallization of the silicon carbide coating are effectively promoted through unique surface modification treatment, and the compactness and uniformity of the coating and the binding force of the coating and a matrix are remarkably improved. The obtained coating graphite piece has excellent thermal corrosion resistance, oxidation resistance and mechanical property, the service life and the use frequency of the coating graphite piece in semiconductor epitaxial equipment are remarkably prolonged, the whole preparation process is environmentally friendly, and the coating graphite piece is suitable for coating treatment of a large graphite base material.

The invention provides a novel chiral ferrocene bridged binaphthyl skeleton phosphine ligand and application thereof. The ligand has the advantages of low cost, simplicity in synthesis, air stability and the like. The ligands have good catalytic activity and enantioselectivity in the asymmetric hydrogenation reaction of ketone, and have certain industrial application prospects in the synthesis of pharmaceutical molecules.

The intelligent fumigation warehouse inspection robot comprises a propelling frame, a bottom frame and a releasing frame which are connected in sequence, a medicament outer box is installed in the middle of the upper surface of the bottom frame, and a control panel is embedded outside the medicament outer box; the intelligent fumigation in the granary is jointly realized by taking a measure of combining continuous medicament loading and fixed-point medicament distribution, and targeted and accurate medicament application is performed through intermittent release and fixed-point medicament distribution after medicament loading, so that the fumigation effect in the granary is unified; in combination with parameter measurement of a gas fumigation comprehensive value and a pesticide application point position distribution value, the distribution condition of fumigation point positions and the distribution condition of the pesticide amount in the current granary are judged according to a granary patrol fumigation coefficient, and the distribution positions of the fumigation point positions and accurate infusion of the pesticide amount are correspondingly controlled; the problems that due to season change and grain condition parameter change, the concentration of phosphine gas in a granary is not uniform, and pesticide application accuracy is limited are solved, and grain storage safety is greatly guaranteed.

The invention discloses a phosphorane mixed gas filling method, and relates to the technical field of mixed gases, the phosphorane mixed gas filling method comprises instrument pretreatment, step-by-step filling, post-vacuum treatment, quality detection and safety monitoring, and the phosphorane mixed gas filling method has the advantages that a mixed accelerant is added into a filling pipeline in the phosphorane and argon filling process, so that the filling efficiency is improved; by providing a large number of active sites and unique gas diffusion channels, uniform mixing of phosphorane and argon can be accelerated, the uniformity and accuracy of mixed gas matching are improved, in the process of action of an accelerant and gas, argon molecules are fully contacted and collided with dissociated and adsorbed phosphorus atoms under the guidance of a special structure of a nano-porous material, and the phosphorus atoms are separated and adsorbed. The mixed accelerant is added to promote rapid and uniform mixing of the phosphorus and the alkane, stable and accurate-proportion phosphorus and alkane mixed gas is formed, and in the whole process, the mixed accelerant continuously plays a role, so that the uniform mixing efficiency of the mixed gas in the filling process is greatly improved compared with a traditional mode.

The present invention provides a method for preparing tin or tin alloy-coated copper powder and a low-temperature conductive paste, wherein the method comprises the following steps: S10, pretreating the surface of the copper powder to remove oxides and impurities on the copper powder surface; S20, placing the pretreated copper powder in an electroplating solution containing an organic phosphine compound additive; electroplating the copper powder using tin metal or tin alloy as an anode and copper powder as a cathode, wherein the copper powder is dispersed during the electroplating process; S30, after the electroplating is completed, filtering, washing, and drying to obtain the tin or tin alloy-coated copper powder. The addition of the organic phosphine compound in the present invention greatly improves the compactness of the tin or tin alloy coating formed on the surface of the copper powder, thereby making the prepared tin-coated copper powder or tin alloy-coated copper powder have the advantage of better oxidation resistance.

The invention discloses a glass fiber reinforced polyurethane material and a preparation method thereof, and relates to the technical field of high polymer materials. When the glass fiber reinforced polyurethane material is prepared, bis (4, 4 '-dihydroxy) phenylacetylene reacts with bis (pinacolato) diboron and 4-bromopyridine in sequence to prepare an ultraviolet absorption monomer; the preparation method comprises the following steps: polymerizing polyether glycol, an ultraviolet absorption monomer, a sulfonium salt diol monomer and 1, 6-hexamethylene diisocyanate to prepare functional polyurethane; the preparation method comprises the following steps: polymerizing and coating a boron-containing flame-retardant monomer and bis (2-aminoethyl) phosphine on glass fibers to prepare pre-modified glass fibers; the pre-modified glass fiber and hydroxymethylated triazoline diketone are subjected to a reaction, and modified glass fiber is prepared; and uniformly mixing the functionalized polyurethane and the modified glass fiber, and carrying out injection molding to obtain the glass fiber reinforced polyurethane material. The glass fiber reinforced polyurethane material prepared by the invention has excellent anti-aging, antibacterial, flame-retardant, self-repairing and mechanical properties.

The invention discloses a palladium catalyst as well as a preparation method and application thereof. The structural formula of the palladium catalyst is shown as a formula (I), according to the invention, an alkoxy group is introduced into the skeleton of the palladium catalyst and N-methylimidazole is coordinated with palladium, so that the catalytic yield of the palladium catalyst is effectively improved, and long-chain alkyl polyarylamine with high molecular weight and narrow distribution is obtained; the method does not need to use a traditional phosphine ligand, avoids potential hazards of phosphine compounds to operators and the environment in the use process, and is expected to be industrially applied on a large scale due to the fact that the phosphine compounds are stable to air and moisture and can be stored for a long time.

The invention relates to the technical field of chemical synthesis, and particularly discloses an alpha methyl beta phosphonate compound and a synthesis method thereof.The alpha methyl beta phosphonate compound is obtained by directly oxidizing the alpha position of aryl ketone into carbon positive and combining the carbon positive with diethyl phosphite anions under the alkaline condition by using hydrogen peroxide and iodine as oxidizing agents. The alpha methyl substituted beta phosphate ester compound can be generated by a one-step method. The method is suitable for synthesizing compounds of phosphoric acid (methyl, ethyl, propyl and the like) with different alkyl substitutes (methyl, ethyl, propyl and the like) at carbonyl alpha positions. According to the method, the alpha-methyl substituted beta phosphate compound can be synthesized only by using commercial cheap and easily available aryl ketone as a raw material, using hydrogen peroxide and iodine as oxidants and using diethyl hypophosphite as a phosphine source, and reacting in the DMSO solvent at 100 DEG C for 12 hours, so that the target product can be obtained, and the yield is excellent. Compared with previously reported methods, the method does not need low-temperature operation, is simple to operate, adopts a one-pot method, does not need a metal catalyst, and all raw materials are common bulk chemicals.

The invention relates to the technical field of carbonylation, and discloses a phosphine nitrogen compound and a metal complex as well as a preparation method, a composition and application thereof and a carbonylation reaction method. Wherein the phosphine-nitrogen compound has a chemical structure as shown in a formula (II), and the metal complex prepared from the phosphine-nitrogen compound has the characteristics of high catalytic activity, good thermal stability, difficulty in inactivation and high product selectivity in catalytic carbonylation reaction. # imgabs0 #

The invention discloses a method for preparing polyol ester by carrying out hydrogen esterification reaction on long-chain olefin and polyol, which comprises the following steps of: by taking the long-chain olefin and the polyol as reactants, introducing carbon monoxide to control the pressure to be 1.0-8.0 Mpa and the reaction temperature to be 60-150 DEG C under the action of a composite catalyst consisting of a palladium compound, a phosphine ligand and organic acid and an organic solvent; and preparing to obtain the polyol ester for lubrication. Compared with the existing polyol ester synthesis method, the method has the advantages of mild reaction conditions, wide raw material applicability, high reaction activity and the like.

The invention discloses a fire-resistant and flame-retardant nylon composition as well as a preparation method and application thereof, the nylon composition comprises the following components in parts by weight: 28-60 parts of aliphatic nylon resin, 4-15 parts of semi-aromatic nylon resin, 18-32 parts of glass fiber, 12-21 parts of hypophosphite, 3-9 parts of a flame-retardant synergist and 1-4 parts of a carbon formation accelerator, the mass ratio of the hypophosphite to the flame retardant synergist is (2-4): 1; the relative viscosity of the aliphatic nylon resin is 2.6 to 2.9; the carbon forming accelerant is rare earth oxide or zinc stannate. The organic phosphine flame-retardant nylon composition disclosed by the invention has excellent flame retardant property and fire resistance and also has high mechanical property.

The invention discloses an organic phosphine flame-retardant nylon composition with excellent wet electrical properties as well as a preparation method and application of the organic phosphine flame-retardant nylon composition. The organic phosphine flame-retardant nylon composition comprises the following components in parts by weight: 23-53 parts of short carbon chain aliphatic nylon resin, 10-15 parts of long carbon chain aliphatic nylon resin, 5-10 parts of semi-aromatic nylon resin, 20-30 parts of glass fibers, 10-16 parts of hypophosphite and 2-6 parts of an inorganic synergist, the glass transition temperature of the semi-aromatic nylon resin is greater than or equal to 88 DEG C, and the glass transition temperature of the long carbon chain aliphatic nylon resin is greater than or equal to 90 DEG C. The glass fibers are hydrolysis-resistant glass fibers. The organic phosphine flame-retardant nylon composition disclosed by the invention can realize the unification of high flame-retardant property and high-wet-state electrical property, and has high mechanical property at the same time.

The invention discloses weather-resistant unsaturated polyester resin as well as a preparation method and photovoltaic application thereof, and relates to the technical field of high polymer materials. When the weather-resistant unsaturated polyester resin is prepared, 1, 6-hexanediol, itaconic acid and an ultraviolet absorption monomer are subjected to esterification and polycondensation to prepare unsaturated polyester; the preparation method comprises the following steps: carrying out reaction on naringenin and 4-isocyanate-tetramethylpiperidine oxide to prepare a functional cross-linking agent; the preparation method comprises the following steps: reacting 3-(4-chlorphenyl) phosphine, 2, 2 '-thiobis (4-chlorophenol) and 2-butene-1, 4-diamine, and polymerizing and coating silicon dioxide to prepare pre-modified silicon dioxide; reacting the pre-modified silicon dioxide, n-butylamine and nickel acetate to obtain modified silicon dioxide; uniformly mixing unsaturated polyester, a functional cross-linking agent and modified silicon dioxide, and performing injection molding to obtain the weather-resistant unsaturated polyester resin. The weather-resistant unsaturated polyester resin prepared by the invention has excellent anti-aging, flame-retardant, self-repairing and mechanical properties.

The invention discloses a copper-titanium etching solution and a preparation method thereof, and belongs to the technical field of etching solution preparation. The etching solution is prepared from the following components in percentage by mass: 4.5-7.5% of potassium peroxymonosulfate composite salt, 1.2-2.8% of sodium percarbonate, 1.2-2.8% of benzotriazole-2, 3, 4-triazole-2, 3, 4-triazole-2, 3, 4-triazole-2, 3, 4-triazole-2, 3- The cleaning agent is prepared from the following components in percentage by weight: 1.2%-1.8% of 1, 3-dicarboxylic acid, 0.3%-0.8% of 5-aminotetrazole, 0.15%-0.45% of ethylenediamine tetraacetic acid tetrasodium salt, 0.15%-0.45% of hydroxyethylidene diphosphonic acid, 0.15%-0.45% of cocamidopropyl betaine, 0.3%-0.8% of benzotriazole, 0.15%-0.45% of 2-mercaptobenzothiazole, 0.02%-0.08% of poly-N-isopropylacrylamide, 0.7%-1.8% of potassium perchlorate and the balance of ultrapure water. According to the etching solution, the copper-titanium etching rate can be accurately regulated and controlled, back cutting and titanium residues are effectively inhibited, the stability of the etching solution is improved, and the service life of the etching solution is prolonged.

The invention discloses a polyamide composition as well as a preparation method and application thereof, and belongs to the field of high polymer materials. According to the polyamide composition, the organic phosphine flame retardant and the flame-retardant synergist are utilized to form a flame-retardant system, the aromatic polyamide and the zirconium hydroxide are introduced to improve the electrochemical corrosion resistance, and under the synergistic effect of all the components, the composition has excellent mechanical performance, flame retardance and electrochemical corrosion resistance, and the flame-retardant polyamide composition is suitable for being applied to the field of flame retardants. Particularly, the composite material has the electrochemical corrosion resistance under the conditions of high temperature and high humidity (such as the temperature of 85 DEG C and the humidity of 85% RH), and has a very good application prospect in the fields of new energy high-voltage connectors, energy storage connectors and the like.

The present invention discloses a metal porphyrin-based porous ionic polymer and a preparation method and application thereof, and relates to the technical field of polymer compound catalysis. The metal porphyrin-based porous ionic polymer of the present invention is provided with a three-dimensional structure by introducing tetraphenylmethane and its derivatives or halogen-containing phosphonium salts, thereby obtaining a metal porphyrin-based porous ionic polymer rich in mesopores and having a high specific surface area, thereby improving the catalytic performance and achieving efficient and highly selective catalytic reactions. The metal porphyrin-based porous ionic polymer prepared by the present invention is particularly suitable for catalyzing the cycloaddition reaction of carbon dioxide and epoxide, has high selectivity and strong adsorption capacity for carbon dioxide, and can catalyze the generation of cyclic carbonates efficiently and selectively.

The invention discloses a gold nanocluster and application thereof in electro-catalysis of carbon dioxide reaction. The synthesis method comprises the following synthesis steps: firstly, adding a gold source into a tetrahydrofuran solution, stirring for five minutes, then adding tetra-n-octyl ammonium bromide, stirring until the solution is dark red, adding cyclohexanol, stirring until the solution is transparent, then adding a reducing agent, stirring overnight, then washing with methanol for multiple times, dissolving a crude product into a small amount of methylbenzene, and drying to obtain a target product. And adding a certain amount of cyclohexanol and 3 (2-furyl) phosphorus again, slowly stirring at 60 DEG C for 12 hours to obtain a crude product, washing with methanol for several times again, and purifying and separating to obtain the gold nanocluster. The gold nanocluster provided by the invention has the characteristics of novel structure, good stability, easy synthesis and high yield, and has excellent catalytic performance in electrocatalytic carbon dioxide reaction.

The invention provides an antibacterial polyurethane acrylate film material embedded with N-substituted benzisothiazolinone and alkenyl functionalized quaternary phosphonium salt, and belongs to the field of organic antibacterial coatings. N-substituted alkenyl of benzisothiazolinone is functionalized, tri (4-methoxyphenyl) phosphine alkenyl is functionalized, and the antibacterial polyurethane acrylate film material is prepared. Double bonds are introduced into a benzisothiazolinone structural unit and a tri (4-methoxyphenyl) phosphine structural unit, N-substituted benzisothiazolinone (NIT) and tri (4-methoxyphenyl) (nonyl-8-ene-1-yl) phosphonium bromide (TPC9) are grafted into a polyurethane acrylate main chain at the same time, and by means of the remarkable antibacterial activity of the NIT and the TPC9 on escherichia coli and staphylococcus aureus, the polyurethane acrylate can be used for preparing the antibacterial polyurethane acrylate. A broad-spectrum antibacterial material is prepared, and a corresponding antibacterial coating can be used for modifying the surface of a base material.

The invention relates to the technical field of water treatment, in particular to a whisker type dication modified tannin-based organic flocculant as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) adding tetrabutylphosphonium bromide into an alkaline solution of tannic acid, and reacting at 50-80 DEG C for 2-4 hours; (2) dispersing the precipitate in water, continuously introducing nitrogen, adding a first free radical initiator at 50-80 DEG C for reaction, then adding dimethyl diallyl ammonium chloride and a second free radical initiator, and reacting for 2-4 hours; and (3) extracting by using a mixed solution of acetone and ethanol to obtain a precipitation product, filtering and washing to obtain the product. The quaternary phosphonium salt and the quaternary ammonium salt which have strong cationic property and good water solubility are grafted to the tannic acid step by step, so that the water solubility and the flocculation effect of the tannic acid are remarkably improved, meanwhile, the biodegradability and the environmental friendliness of the tannic acid are kept, and the technical effects of efficiently removing algae and cooperatively removing algal toxins can be achieved.

The invention belongs to the technical field of polyether polyol preparation, and discloses a synthesis method of propylene glycol polyether. The synthesis method comprises the following steps: mixing propylene glycol, an organic boron catalyst and a cocatalyst, then introducing alkylene oxide at 10-80 DEG C for reaction, adding a solvent into a reaction system after the reaction is finished, and carrying out reduced pressure distillation, washing and drying to obtain propylene glycol polyether, the cocatalyst is selected from one or a combination of at least two of trimethylphosphine, triethylphosphine, triphenylphosphine, tris (dimethylamino) phosphine and tripyrrolidine phosphine. According to the invention, the organic boron catalyst and the cocatalyst phosphine salt are matched for use, and the cocatalyst is selected, so that the reaction can be carried out under a relatively wide temperature condition, and the propylene glycol polyether with controllable molecular weight and narrow distribution is prepared.

The invention discloses a rubber composition with low silane coupling agent content as well as a preparation method and application thereof. The rubber composition comprises rubber, white carbon black, a silane coupling agent and a modified catalyst. The modified catalyst is a composition of zinc dialkyl dithiophosphate and organic phosphine salt, the dosage of the silane coupling agent accounts for 0.5-15 wt% of the white carbon black, and the dosage of the modified catalyst accounts for 1-60 wt% of the silane coupling agent. The silane coupling agent and the modified catalyst are added into the rubber composition at the same time, and through combination of the silane coupling agent and the modified catalyst, the purpose of reducing the dosage of the silane coupling agent is achieved on the premise that excellent dispersity of the white carbon black and good aging resistance and physical and mechanical properties of the rubber composition are guaranteed; therefore, the purpose of reducing the comprehensive manufacturing cost of the rubber composition and even the whole tire is achieved, low-cost application of the functional silane coupling agent in the rubber composition is achieved, and the problems existing in the prior art are fundamentally solved.

The invention discloses a preparation method of a high-heat-resistance glass fiber reinforced polypropylene material. The preparation method comprises the following steps: uniformly mixing a hindered phenol antioxidant and a phosphine salt to obtain a heat-resistant auxiliary agent; the preparation method comprises the following steps: adding PP, chopped glass fibers, a heat-resistant auxiliary agent and thioester into a mixer, fully mixing, extruding by using a same screw extruder at the extrusion temperature of 210 + / -2 DEG C, and drying in a hot air environment of 100 + / -2 DEG C for 1-2 hours to obtain the high-heat-resistant glass fiber reinforced polypropylene material. The preparation method is simple, the raw materials are easy to obtain, the cost is low, the obtained high-heat-resistance glass fiber reinforced polypropylene material has the excellent performance of traditional PP-GF30, the heat resistance is remarkably improved, and the high-heat-resistance glass fiber reinforced polypropylene material can be suitable for high-temperature-resistant components including engine covers.

The invention relates to a pyrrolopyrrole organic micromolecular photothermal material with high photothermal conversion efficiency and a preparation method and application thereof, and belongs to the field of organic micromolecular photothermal materials. The problems that an existing photo-thermal material is poor in thermal stability and low in photo-thermal conversion efficiency are solved. The preparation method comprises the following steps: mixing BrDPPBr, R-boric acid ester, potassium carbonate and a high-boiling-point solvent, heating, adding a phosphine compound, continuously heating and stirring, reacting, cooling to room temperature, adding pure water to separate out a solid, recrystallizing and purifying to obtain the pyrrolopyrrole organic small molecule photo-thermal material. The evaporator is applied to water evaporation. The invention relates to the pyrrolopyrrole organic small molecule photo-thermal material with high photo-thermal conversion efficiency and the preparation and application of the pyrrolopyrrole organic small molecule photo-thermal material.

The present application relates to a kind of phosphine oxy group covalent modification composite adsorption material and its preparation method and purposes, the preparation method includes the following steps: (1) mixing dopamine hydrochloride, phosphine-containing substrate, tris-hydroxymethyl aminomethane hydrochloride and sodium hydroxide in solvent, to obtain mixed solution;(2) the mixed solution obtained in step (1) and solid phase material are mixed, then oscillation reaction is carried out, to obtain solid-liquid mixture;(3) the solid-liquid mixture obtained in step (2) is carried out solid-liquid separation, and the solid phase part obtained is sequentially washed and dried, to obtain phosphine oxy group covalent modification composite adsorption material.The phosphine oxy group covalent modification composite adsorption material provided by the present application has excellent adsorption selectivity and material stability, and can be used for the high-selectivity separation and recovery of rare metals indium and gallium.

The embodiment of the invention relates to a carbon-phosphorus composite material as well as a preparation method and application thereof, and the preparation method comprises the following steps: placing porous carbon in a vapor deposition furnace at room temperature, then introducing inert gas into the vapor deposition furnace, and heating the vapor deposition furnace to a deposition temperature; first mixed gas of phosphorane and inert gas is introduced into the vapor deposition furnace, so that the phosphorane is decomposed into phosphorus nano-particles at the deposition temperature, the phosphorus nano-particles are deposited in pores of the porous carbon, and a carbon-phosphorus compound is obtained; the carbon-phosphorus compound is placed in a cladding furnace, then inert gas is introduced into the cladding furnace, and the cladding furnace is heated to the cladding temperature; and second mixed gas of inert gas and carbon source gas is introduced into the coating furnace, so that the carbon source gas performs carbon coating on the carbon-phosphorus compound at the coating temperature, and the carbon-phosphorus composite material is obtained.

The invention belongs to the technical field of asymmetric catalysis, and discloses a chiral phosphine nitrogen-nitrogen tridentate ligand based on a ferrocene skeleton as well as a preparation method and application of the chiral phosphine nitrogen-nitrogen tridentate ligand. The structural formula of the ligand is shown as (I) or an enantiomer (II) of the ligand. The preparation method comprises the steps of acylation reaction, oxazoline ring construction, aldehyde group introduction, reductive amination and the like, and application in asymmetric hydrogenation reaction, such as asymmetric hydrogenation of aryl ketone. The ligand has a plurality of chiral factors, simultaneously has a potential hydrogen bond donor, forms secondary interaction with a substrate in an asymmetric catalytic reaction, can further stabilize a reaction transition state, is an efficient novel chiral P, N, N-ligand, has the advantages of high reaction activity, good stereoselectivity, wide substrate range and the like, and has a wide application prospect. # imgabs0 #