134 results about "Ethylenediamine" patented technology

The invention discloses a preparation method of atmospheric water collection porous gel, and belongs to the technical field of environmental ecological restoration, the method comprises the following steps: S1, dissolving a monomer, a foam stabilizer and a foaming aid in an acidic solution, and stirring to form a solution A; s2, mixing N, N '-methylene bisacrylamide, tetramethylethylenediamine and an initiator with the solution A to form a solution B; s3, mixing and stirring a foaming agent and the solution B, and standing for reaction to form a substrate C; s4, drying the matrix C, and immersing the matrix C into the solution D for reaction to form a precursor E; and S5, drying the precursor E to obtain the atmospheric water collection porous gel material. The problems that in the prior art, the preparation process is complex, and the foaming process is uncontrollable are solved.

The present disclosure relates to the technical field of drilling fluid, and discloses a high density environmentally friendly polymer water-based drilling fluid with resistance to 240° C. and saturated salts, a preparation method therefor and use thereof. The water-based drilling fluid comprises a micro-crosslinked heterocyclic polymer filtrate reducer, a hyper-branched strongly adsorbed filtrate reducer, a nanometer intercalated complex shearing potentiator, a flexible outer and rigid inner microsphere plugging agent, and water, wherein the micro-crosslinked heterocyclic polymer filtrate reducer is prepared by reacting sodium p-styrene sulfonate, N,N,N-trimethyl-3-(2-methylallylamino)-1-propyl ammonium chloride, N,N-diethyl acrylamide, N-vinyl caprolactam, tetramethyl ethylenediamine with phenyl triethoxy silane. The high density environmentally friendly polymer water-based drilling fluid with resistance to 240° C. and saturated salts of the present disclosure can exhibit good performance at high temperature and high salinity conditions, and has desirable weighting capability, it can meet the requirements of drilling well in the deep oil and gas formations.

The invention provides a pH response hydrogel composite lithium adsorbent as well as a preparation method and application thereof. The method aims at solving the problems that an existing powder lithium adsorbent is poor in fluidity and difficult to recycle and reuse in practical application. The pH response hydrogel composite lithium adsorbent can expand under the alkaline adsorption condition required by a lithium ion sieve and shrink under the required acidic desorption environment, and the defect that the adsorption performance is reduced due to the fact that part of adsorption sites are covered when a traditional organic binder is formed is overcome. The preparation method of the pH response hydrogel composite lithium adsorbent comprises the following steps: dissolving acrylamide and acrylic acid in water, uniformly stirring, then adding a cross-linking agent and an initiator, dissolving and uniformly stirring, then adding lithium adsorbent powder, and ultrasonically dispersing uniformly to obtain a precursor solution; and adding a tetramethylethylenediamine accelerant into the precursor solution, quickly and uniformly stirring, sealing, standing and curing, washing with deionized water for multiple times, and drying to obtain the pH response hydrogel composite lithium adsorbent. The obtained adsorbent has the advantages of high mechanical strength, simple separation and recovery operation, good pH response cycle reversibility and the like. The hydrophilic three-dimensional network structure expands in an alkaline lithium-containing solution, so that lithium adsorbent particles are fully exposed, and the inherent high adsorption capacity of the powder lithium ion sieve is exerted.

The cyanide-free copper-zinc alloy plating solution comprises 18-24 g / L of polycuprous thiocyanate, 9-13 g / L of polyzinc thiocyanate, 130-170 g / L of polysodium thiocyanate and 8-12 mL / L of brightener, the pH value of the plating solution is 10-12, the temperature of a plating bath is 35-55 DEG C, the cathode current density is 0.5-1.5 A / dm < 2 >, the cathode movement speed is 3-5 m / min, a copper-zinc alloy plate with the copper mass fraction being 68% is used as an anode, and the anode movement speed is 3-5 m / min. The brightening agent is prepared from 60 to 100 parts of N, N '-di-n-propylethylenediamine, 10 to 20 parts of waterborne polyurethane resin, 80 to 120 parts of polyacrylamide of which the molecular weight is less than 8000 and 770 to 870 parts of deionized water. A steel matrix or zinc alloy matrix copper-zinc alloy and bright nickel plated sample piece is subjected to an acetate fog test for 72 h according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, the surface of the steel matrix or zinc alloy matrix copper-zinc alloy and bright nickel plated sample piece is free of rust, and according to GB / T 5270-2005 Metal Covering Layer Electro-Deposition and Chemical Deposition Layer Adhesive Strength Test Method, the coating binding force is tested by a thermal shock method. And the result meets the standard requirement.

The invention relates to a preparation method of a graphene type flame-retardant, light-resistant and wear-resistant waterborne polyurethane coating, which comprises the following steps: adding polyol and isocyanate into a flask, dropwise adding dibutyltin dilaurate, and reacting for 1-2 hours; adding polyethylene glycol into the prepolymer, and reacting for 1-2 hours to obtain the prepolymer; then adding 1, 4-butanediol BDO and a disulfide compound, carrying out a reaction at 70-80 DEG C for 1-2 h, then adding methoxypolyethylene glycol (MPEG) into the prepolymer, and carrying out a reaction at 70 DEG C for 1-2 h; then adding an ultraviolet absorbent, a coumarin derivative, hydroxypropyl propargyl ether and a nitrogen-phosphorus-silicon flame retardant, and carrying out a reaction at 70-80 DEG C for 1-1.5 h; adding ethylene diamine, carrying out secondary chain extension, carrying out stirring reaction at 60-70 DEG C for 0.5-1 hour, adding water, keeping the stirring speed at 2000 r / min, and carrying out reaction for 0.5-1 hour; the graphene type flame-retardant, light-resistant and wear-resistant waterborne polyurethane coating is obtained; the obtained polyurethane has the advantages of favorable flame retardancy, favorable light resistance and favorable wear resistance.

The invention relates to a perovskite solar cell and a preparation method thereof, and belongs to the technical field of solar cells. The perovskite solar cell comprises a conductive substrate, a hole transport layer, a passivation layer, a perovskite layer, an electron transport layer and a metal electrode which are arranged in sequence, the material of the passivation layer is selected from one or more of mercaptoethylamine, ethylenediamine and propylamine; and the thickness of the passivation layer is 1 nm to 10 nm. Through the introduction of interface passivator molecules, the interface between the hole transport layer and the perovskite layer is improved. The surface wettability of the PTAA thin film is enhanced, so that the perovskite precursor solution can form a uniform and compact perovskite layer on the PTAA / SCAs thin film, the carrier separation and transmission efficiency at an interface is improved, and the stability of a device is enhanced.

The invention belongs to the technical field of solar cells, and particularly relates to a wide-band-gap perovskite solar cell with high open-circuit voltage and a method of the wide-band-gap perovskite solar cell. Derivative molecules of ethylenediamine and phenylethylamine and corresponding halide salt materials thereof are introduced below a perovskite light absorption layer of the wide-band-gap perovskite solar cell to serve as a buried interface modification layer, so that the performance of the cell is remarkably improved. Derivative molecules of ethanediamine and phenylethylamine and corresponding halide salt materials thereof can provide free electron pairs, and form a stable coordination structure with uncoordinated Pb < 2 + > ions in perovskite, thereby realizing regulation and control of perovskite crystallization kinetics. According to the invention, the crystallization quality of the wide-band-gap perovskite thin film is improved, and the method has the potential of promoting rapid development of an efficient three-junction laminated cell technology.

The invention discloses a photonic crystal hydrogel-based thermochromic intelligent window material as well as a preparation method and application thereof. The photonic crystal hydrogel-based thermochromic intelligent window material is obtained by filling a three-dimensional photonic crystal structure with a temperature-sensitive hydrogel prepolymerization solution and then curing the three-dimensional photonic crystal structure; the preparation method comprises the following steps: adding a temperature-sensitive monomer, modified cellulose and a cross-linking agent into deionized water, carrying out ultrasonic dispersion, stirring under an ice bath condition until the materials are completely dissolved, adding an initiator, stirring until the materials are dissolved, adding N, N, N ', N'-tetramethylethylenediamine, and uniformly stirring to obtain the temperature-sensitive hydrogel prepolymer. The photonic crystal hydrogel-based thermochromic intelligent window material prepared by the invention can regulate and control the window transmittance in real time according to the environment temperature, and has a sensitive thermochromic effect and excellent infrared shielding performance.

The invention provides a macromolecular sulfur-phosphorus composite high-temperature corrosion inhibitor for a crude oil distillation device and a preparation method and application of the macromolecular sulfur-phosphorus composite high-temperature corrosion inhibitor for the crude oil distillation device, and the preparation method of the macromolecular sulfur-phosphorus composite high-temperature corrosion inhibitor for the crude oil distillation device comprises the following steps: step 1, dropwise adding ethylenediamine into a mixture of phenylphosphonic dichloride and acetonitrile at room temperature, and reacting for 2-4 hours; step 2, adding thiourea, heating to 100-120 DEG C, and reacting for 1-2 hours; and step 3, adding fatty acid, heating to 120-140 DEG C, and reacting for 2-4 hours to obtain the macromolecular sulfur-phosphorus composite crude oil distillation device high-temperature corrosion inhibitor. The macromolecular sulfur-phosphorus composite high-temperature corrosion inhibitor for the crude oil distillation device is low in phosphorus content, contains a sulfur element, has the characteristics of small addition amount, high corrosion inhibition rate, low cost and easiness in production, and has a good application prospect and large-scale industrial popularization potential in the field of crude oil distillation devices.

The invention discloses a method for preparing high-entropy boride ultrahigh-temperature ceramic powder by a liquid phase method. The green, low-cost and controllable high-entropy boride superhigh-temperature ceramic powder is prepared by taking a transition metal oxide as a metal source, boric acid as a boron source and sorbitol as a carbon source through a liquid phase method in combination with a boron thermal / carbon thermal reduction reaction. According to the preparation method disclosed by the invention, the ammonium sulfate, the tetramethylethylenediamine, the acrylamide and the N, N '-methylene bisacrylamide are used for carrying out gelation treatment to obtain the pure-phase high-entropy boride ultrahigh-temperature ceramic powder, so that a feasible strategy is provided for preparing the high-entropy boride ultrahigh-temperature ceramic powder which is efficient, environment-friendly and economical.

The invention relates to the technical field of polycarbonate, and discloses a preparation process of a halogen-free flame-retardant high-strength polycarbonate composite material, wherein a DOPO dicarbonate ethyl chloride intermediate and N,N,N',N'-tetramethylethylenediamine are reacted to obtain a cationic DOPO carbonate-based polymer flame retardant. Then, the carbon nanotubes are modified with sodium triazine benzenesulfonate to blend and modify the polycarbonate. The polymer flame retardant contains the same carbonate structural unit as the polycarbonate, and the two have good structural similarity and compatibility, and will not affect the mechanical properties of the polycarbonate. At the same time, the interface interaction and compatibility between the carbon nanotubes and the polycarbonate are improved, and the tensile properties and impact strength of the polycarbonate are improved. The polymer flame retardant contains a DOPO flame retardant group, and the surface of the carbon nanotube contains a triazine functional group and a sulfonate group, which significantly improves the flame retardant properties of the polycarbonate.

The invention relates to the technical field of glass, in particular to heat insulation type fireproof glass and a manufacturing method thereof.The heat insulation type fireproof glass comprises a fire-facing glass layer and a fire-backing glass layer, and the space between the fire-facing glass layer and the fire-backing glass layer is filled with a polyacrylamide gel layer; the polyacrylamide gel layer is prepared from the following raw materials: acrylamide, octa-amino POSS (Polyhedral Oligomeric Silsesquioxane), polydopamine modified tetrapod-like zinc oxide whiskers, a composite flame retardant, a cross-linking agent, tetramethylethylenediamine, an initiator and deionized water; the mass ratio of the acrylamide to the octa-amino POSS to the polydopamine modified tetrapod-like zinc oxide whisker is (30-38): (2.5-4): (1.5-2.2); the heat insulation type fireproof glass has excellent fireproof performance, heat insulation performance and aging resistance.

The invention belongs to the technical field of underground engineering grouting materials, and discloses an anti-dispersion solid waste grouting filling material and a preparation method and application thereof. The slurry A is prepared from the following components in parts by mass: 400 to 1000 parts of fly ash, 500 to 1000 parts of blast furnace slag, 100 to 500 parts of Portland cement, 250 to 1200 parts of water, 5 to 50 parts of sodium hydroxide and 10 to 50 parts of PolyFure-I; the polyFure-I comprises acrylamide and N, N, N ', N'-tetramethylethylenediamine, and the polyFure-I comprises acrylamide and N, N, N ', N'-tetramethylethylenediamine; the slurry B is prepared from the following components in parts by mass: water glass and PolyFure-II; the PolyFure-II is prepared from water glass, an ammonium persulfate solution, xanthan gum and carboxymethyl cellulose. The flowing water dispersion resistance of the grouting material is effectively improved, the blocking effect of flowing water is enhanced, and the problem of insufficient blocking of a traditional grouting material is solved.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a preparation method of a P-N synergistic halogen-free flame-retardant curing agent and application of the P-N synergistic halogen-free flame-retardant curing agent in epoxy resin. Phosphorus oxychloride reacts with a phenolic compound containing an aldehyde group to obtain a polyaldehyde compound containing phospholipid, and then the polyaldehyde compound containing phospholipid reacts with N-methylethylenediamine to obtain a halogen-free flame-retardant curing agent containing phosphorus and nitrogen elements, and the halogen-free flame-retardant curing agent containing phosphorus and nitrogen elements is used for curing epoxy resin, so that the reaction type halogen-free flame-retardant epoxy resin material is prepared. Due to the synergistic effect of phosphorus and nitrogen elements, the material has excellent char forming performance and flame retardant property.

This invention discloses a polyoxometalate that catalyzes the Knoevenagel reaction, its preparation method, and its applications. The chemical formula of the polyoxometalate that catalyzes the Knoevenagel reaction is: H3[K(H2O)6][K2(H2O) 10 ]2[Cu(en)2(H2O)2][Cu(en)2(Nb6O 19 Cu(en))2·24H2O, where en = ethylenediamine; the polyoxometalate crystals catalyzing the Knoevenagel reaction belong to the triclinic crystal system with space group P-1; the polyoxometalates catalyzing the Knoevenagel reaction prepared in this invention exhibit excellent heterogeneous catalytic performance in the highly efficient Knoevenagel condensation reaction, showing high yield and high stability under isothermal conditions at a 1:1 substrate ratio and over a wide substrate range. The superior catalytic ability of the polyoxometalates catalyzing the Knoevenagel reaction can be attributed to the presence of dense and effective basic sites on the surface of the heteropolycationic chain, and the increased contact frequency between the organic-inorganic hybrid catalyst and the substrate.

An amine-modified metal-organic framework composition is provided that has beneficial properties for performing direct air capture. The composition corresponds to a mixed-metal organic framework that includes 4,4′-dioxidobiphenyl-3,3′-dicarboxylate (dobpdc) as the linker. The mixed metals can correspond to two or more metals. In some aspects, the mixed-metal organic framework corresponds to M1xM2(2-x) (dobpdc). In various aspects, the mixed-metal organic framework is appended with N,N′-diethylethylenediamine (e-2-e).

The present invention discloses a preparation method of chrome-free tanned upper leather, comprising the following steps: Step 1: Re-wetting Add the prepared aqueous solution of sodium chloride and sodium bicarbonate into a drum machine, and then put in the raw hide, and rotate for 10 - 30 min; Step 2: Water washing Immerse the re-wetted raw hide in pure water and wash for 10 - 30 min; Step 3: Tanning Add water, a catalyst, and a modified tanning agent into the drum machine, and run the drum machine for tanning for 200 - 360 min; Step 4: Alkali raising Add sodium bicarbonate into the drum machine, adjust the pH to 8.0, raise the temperature to 35 °C, rotate for 4 h, stand for 5 - 20 h, and dry to obtain the upper leather; The modified tanning agent is formed by the reaction of starch, trimethylolethane triglycidyl ether, tetramethylethylenediamine, N-(2-hydroxyethyl)guanidine, and epoxypropionic acid. The purpose of the present invention is to provide a preparation method of chrome-free tanned upper leather.

The invention provides a solar cell and a preparation method thereof, and a photovoltaic module, the solar cell comprises a substrate, and a hole transport layer, a perovskite layer, a passivation layer and an electron transport layer which are sequentially arranged on the substrate, and the passivation layer is located between the perovskite layer and the electron transport layer; and the passivation layer comprises a mercaptopyridine compound and ethanediamine diiodide, so that the surface defects of the perovskite layer are reduced, and the interface recombination of the top interface between the perovskite layer and the electron transport layer is reduced, thereby improving the photoelectric conversion efficiency of the solar cell.

This invention discloses a method for preparing a composite for treating acrylonitrile production wastewater, comprising: dispersing an oxidant in an aqueous solution, then adding graphite material, heating the system and stirring to react, maintaining the temperature after the reaction, adding an aqueous solution of β-glycerophosphate and stirring until homogeneous, then naturally cooling to room temperature, allowing it to stand, removing the graphite material, and performing conventional washing, drying, and pulverizing to obtain modified graphite powder with a particle size of 200-400 mesh; dissolving a polyol in water, then heating to a certain temperature, adding N1,N2-bis(2,3-dihydroxy-4,6-disulfonic acid benzyl)ethylenediamine and stirring, then adding polyacrylamide until completely dissolved, then adding the modified graphite powder obtained above and stirring until homogeneous, maintaining the temperature and reacting under ultraviolet light, and cooling to room temperature after the reaction to obtain the final product. The composite of this invention can effectively treat pollutants in wastewater, and the process is simple and low-cost.

The invention discloses a denitrification and dephosphorization agent and a preparation method thereof. First, corn stalks and a metal nitrate aqueous solution are used as raw materials to prepare metal-based biochar, and then acrylamide is polymerized in situ with the metal-based biochar as a matrix to prepare modified metal-based biochar; then acrylic acid is used to graft starch to obtain acrylic acid grafted starch, and then the acrylic acid grafted starch is reacted with ethylenediamine solution to obtain amino chelated starch, and enzymatic hydrolysis is performed to obtain porous amino chelated starch; finally, the modified metal-based biochar and the porous amino chelated starch are compounded to obtain the agent. The agent can simultaneously achieve denitrification and dephosphorization of sewage, and has very good application prospects.

The invention discloses a method for preparing porous ceramic by using high-iron slag, which comprises the following steps: grinding high-iron slag powder, methacrylamide, N, N-methylene bisacrylamide and water in a ball mill, and sieving with a 150-mesh sieve to obtain slurry; the preparation method comprises the following steps: sequentially adding ammonium persulfate and N, N, N, N-tetramethylethylenediamine into water, and stirring and mixing to obtain a mixed solution; adding the mixed solution into the slurry, uniformly stirring and mixing, pouring into a mold, and after the slurry in the mold is cured, drying and demolding to obtain a green body; and drying the green body, sintering in a kiln, preserving heat for 1-3 hours at the highest sintering temperature of 1050-1250 DEG C, and cooling after sintering to obtain the porous ceramic. According to the invention, not only can the high-iron slag be used as a raw material for producing the porous ceramic, but also the obtained porous ceramic has good breaking strength and through hole rate.

The invention discloses a synthesis method and application of urolithin A and urolithin B derivatives, and discloses several novel urolithin A and urolithin B derivatives and related activity information. A series of novel urolithin A and urolithin B derivatives are obtained by respectively taking urolithin A and urolithin B as parent bodies and carrying out alkylation reaction on the parent bodies and halogenated hydrocarbon. In an alkaline environment, the urolithin and halogenated hydrocarbon are subjected to an alkylation reaction to generate a target derivative. And further purifying and separating a crude product obtained by the reaction, and determining a target structure by using nuclear magnetic spectrum. The invention discloses a synthesis method of two types of urolithin derivatives, structural information and anti-inflammatory and anti-oxidation effect results on ZEA-OGCs (Zinc Ethylenediamine-Oriented Growth Cells). A reference is provided for exploring wider structural modification of urolithin substances; rich structure types provide a structural basis for activity research of urolithin substances.

The invention relates to the technical field of wastewater treatment, and particularly provides a method for improving the anaerobic ammonia oxidation denitrification effect of high-ammonia-nitrogen wastewater. The method is realized by adding one or more enhancer combinations into a reaction system, wherein the enhancer is selected from vitamin B6, siderophore catechin (CAT) and siderophore hydroxyethyl ethylenediamine triacetic acid (HEDTA). By adding the enhancer, the inhibition effect of a high-ammonia-nitrogen environment on anaerobic ammonium oxidation functional flora can be effectively relieved, and the metabolic activity and the proliferation rate of the anaerobic ammonium oxidation flora are remarkably enhanced. The method is simple and convenient to operate and low in cost, can greatly improve the denitrification efficiency and operation stability of the system under high ammonia nitrogen load on the premise of not changing the structure of the existing reaction system, and is suitable for treating high ammonia nitrogen wastewater such as mine leaching tail water, landfill leachate and the like.

The invention belongs to the field of organic solar cell acceptor material preparation, and discloses a preparation method of an organic non-fullerene acceptor intermediate, which comprises the following steps: taking dichloromethane as a solvent, mixing and stirring a compound 1 and a compound A, adding metal chloride in batches, reacting to obtain a compound 2, taking alpha as a solvent, and reacting to obtain the organic non-fullerene acceptor intermediate. Reacting the compound 2, the compound B and alkali liquor, and extracting to obtain a compound 3; taking monohydric alcohol as a solvent, reacting the compound 3 with sodium hydroxide, removing the solvent, adding water, adjusting the pH value to 1-2, stirring, filtering and drying to obtain a compound 4; taking beta as a solvent, reacting the compound 4, tetramethylethylenediamine and cuprous oxide to the end point, adding an acidifying agent, extracting with petroleum ether, filtering the obtained organic phase with diatomite, washing a filter cake with petroleum ether, removing the organic solvent under reduced pressure, and drying to obtain a compound 5; taking tetrahydrofuran as a solvent, reacting the compound 5, extracting with petroleum ether, and removing the organic solvent under reduced pressure to obtain a compound 6;

The invention discloses a chiral tripyridine-bis (sulfonylation) imidazoline ligand Tpy-bisulidine and a preparation method of the chiral tripyridine-bis (sulfonylation) imidazoline ligand Tpy-bisulidine. According to the invention, corresponding sulfonylation (R, R)-diphenylethylenediamine 1 and tripyridine-dicarboxaldehyde 2 are subjected to a condensation reaction, and a final product, namely the chiral tripyridine-bis-sulfonylation imidazoline ligand (Tpy-bis-sulfonylation imidazoline), is generated. The ligand contains a tripyridine group and an imidazoline group (a nitrogen group of tripyridine and a tertiary amine nitrogen atom of imidazoline belong to electron-rich coordination sites, and N-H of imidazoline can participate in hydrogen-bond interaction), and can form five-membered ring coordination with Lewis metal, so that a chiral ligand metal compound is generated, and the chiral ligand metal compound is used for preparing a chiral ligand. The compound can be used as a chiral ligand in an asymmetric catalytic reaction. Therefore, the method has important application value in the field of asymmetric catalytic synthesis, and the synthesis method is very economical, simple and convenient. And the compound also has good air stability and wide applicability, and has good compatibility with various substituent groups.

The invention provides an azo dye adsorbent preparation method, which comprises: S1, carrying out alkali treatment on a pyrolytic coke raw material to obtain porous pyrolytic coke; s2, introducing inert gas into the organic amine solution to obtain inert gas carrying organic amine; the organic amine comprises at least one of diethanol amine, hydroxyethyl ethylenediamine and diethylenetriamine; and S3, placing the porous pyrolytic coke in a reactor, then introducing inert gas carrying organic amine into the reactor, and carrying out organic amine modification on the porous pyrolytic coke by adopting a low-temperature plasma technology to obtain the azo dye adsorbent. According to the method, the pyrolytic coke is adopted as the raw material, resource utilization of the waste heat pyrolytic coke is achieved while pollution is reduced, the waste heat pyrolytic coke obtains the use value again through recycling and reprocessing, and resource waste is effectively reduced. The azo dye adsorbent obtained by adopting the preparation method disclosed by the invention has an excellent adsorption effect and has a good application prospect in azo dye wastewater treatment.

The present invention provides a class of novel chiral benzene-ring framework phosphine-1,2-diphenylethylenediamine ligands, their preparation methods, and their applications in asymmetric hydrogenation reactions. 2-Diphenylphosphinobenzaldehyde and 1,2-diphenylethylenediamine are added to a Schlenk flask in a molar ratio of 1:1.2. After filling with nitrogen, methanol (0.2 M) is added. The resulting mixture is refluxed at 80 °C for 1-2 hours. After cooling to room temperature, 2 equiv. of NaBH4 is added, and then the mixture is refluxed again at 80 °C for 3-4 hours. After cooling to room temperature, water is added to the reaction solution, and then extracted with dichloromethane, dried over anhydrous sodium sulfate. After removing the solvent, the desired chiral benzene-ring framework phosphine-1,2-diphenylethylenediamine ligand is obtained by column chromatography. The catalysts formed by the chiral ligands of the present invention and metal precursors such as Ir- and Ru- have excellent catalytic activity and stereoselectivity in the catalytic asymmetric hydrogenation reactions of C=C, C=N, and C=O double bonds, with an enantioselectivity of up to 99% ee and a TON of up to 100,000.

The present invention discloses a solar heat-absorbing material and a preparation method thereof, belonging to the technical field of preparation of heat-absorbing materials. The raw materials for preparing the heat-absorbing material in the present invention mainly include silicon carbide powder, silica sol, silane coupling agent KH550, tetramethylethylenediamine, calcium carbonate, porous graphene, and polyvinylidene fluoride. In order to avoid problems such as environmental pollution and low density of the material itself existing in the existing preparation methods, the present invention first prepares a kind of porous graphene, and then uses the porous graphene to prepare the solar heat-absorbing material, so that the adhesion between the porous graphene and the foam ceramic slurry is firm, and the solar heat-absorbing material is obtained by sintering and heat preservation. Through the above steps, not only the properties such as hardness and porosity of the solar heat-absorbing material are improved, but also the environmental pollution caused by the release of organic gases during sintering in the traditional method is reduced.

The invention discloses a chiral bipyridine-bis (sulfonylation) imidazoline'crab 'type ligand (Bpy-Bisulidine) and a preparation method of the chiral bipyridine-bis (sulfonylation) imidazoline'crab' type ligand (Bpy-Bisulidine). According to the invention, corresponding sulfonylation (R, R)-diphenylethylenediamine 1 and dipyridyl-dicarboxaldehyde 2 are subjected to a condensation reaction, and a final product, namely the chiral bipyridyl-bis-sulfonylation imidazoline'crab '-shaped ligand (Bpy-Bisulidine), is generated. The ligand contains a bipyridine group and an imidazoline group, and can form five-membered ring coordination with Lewis metal, so that a chiral ligand metal compound is generated, and the chiral ligand metal compound is applied as a chiral ligand in an asymmetric catalytic reaction. Therefore, the method has important application value in the field of asymmetric catalytic synthesis, and the synthesis method is very economical, simple and convenient. And the compound also has good air stability and wide applicability, and has good compatibility with various substituent groups.

The application provides a kind of full solid waste geopolymer grouting material and preparation method thereof, relate to solid waste resource utilization and geopolymer grouting material preparation technical field.The full solid waste geopolymer grouting material includes the following weight parts of raw materials: full solid waste mixture 100-200 parts, alkaline activator 40-50 parts, early strength agent 0.1-0.5 parts, water reducing agent 0.5-1 part, modifier 3-7 parts, water 70-90 parts;The full solid waste material includes slag powder, steel slag powder, phosphogypsum, fly ash;The modifier includes aluminum dihydrogen phosphate, vinyl triacetoxy silane, ethylenediamine terminated polyethylene imine.The full solid waste geopolymer grouting material provided by the application has good working performance, high early strength, micro-expansibility and other characteristics.