46 results about "O-dichlorobenzene" patented technology

The invention relates to a crown ether covalent organic framework material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a crown ether monomer and an amino monomer in an o-dichlorobenzene solvent, adding a catalyst acetic acid aqueous solution, and uniformly dispersing to form a reaction solution; the method comprises the following steps: freezing a reaction solution through a liquid nitrogen bath, vacuumizing, filling nitrogen, carrying out a heating reaction, and carrying out post-treatment operations such as washing and drying on a reaction product, so as to obtain the crown ether covalent organic framework material BADT-DB18C6-COF. The crown ether covalent organic framework material is formed by condensation of a crown ether aldehyde monomer and an amino monomer, the crown ether monomer is 4, 4 ', 4' ', 4 '''-(6, 7, 9, 10, 17, 18, 20, 21-octahydrodibenzo [B, K] [1, 4, 7, 10, 13, 16] hexaoxacyclo octadecene-2, 3, 13, 14-tetrayl) tetrabenzaldehyde, and the crown ether monomer is 4, 4 ', 4' ', 4'''-(6, 7, 9, 10, 17, 18, 20, 21-octahydrodibenzo [B, K] [1, 4, 7, 10, 13, 16] hexaoxacyclo octadecene-2, 3, 13, 14-tetrayl) tetrabenzaldehyde. The amino monomer is 4 ', 5'-bis (4-aminophenyl)-[1, 1 ': 2', 1 ''-terphenyl]-4, 4''-diamine. The crown ether covalent organic framework material BADT-DB18C6-COF prepared by the invention is mainly used as an adsorbent, is used for adsorbing and recovering uranium, thorium and americium ions from a solution, shows good adsorption capacity on radionuclides U-238, Th-232 and Am-243, and is particularly suitable for the field of spent fuel post-treatment in the nuclear industry.

The invention relates to the technical field of materials and advanced oxidation, and discloses a covalent organic framework catalyst with a benzothiadiazole structure, a preparation method of the covalent organic framework catalyst and application of the covalent organic framework catalyst in peroxymonosulfate (PMS) activation and organic pollutant degradation. The preparation method of the covalent organic framework catalyst comprises the following steps: adding precursors 1, 3, 6, 8-tetra-(p-aminophenyl)-pyrene and 2, 7-dibenzaldehyde-benzothiadiazole into a mixed solvent composed of o-dichlorobenzene and n-butyl alcohol, carrying out a reaction by using acetic acid as a catalyst through a solvothermal method, and after the reaction, carrying out multiple times of centrifugal washing and drying to obtain the covalent organic framework catalyst. The catalyst shows excellent performance in the aspect of activating PMS to degrade organic pollutants, the degradation rate constant of bisphenol A reaches 1.68 min <-1 >, and 100% removal can be achieved within 5 minutes. Meanwhile, the catalyst has the advantages of no secondary pollution, strong anti-interference performance, reusability and the like. Compared with a traditional method, the catalyst has high PMS activation efficiency, the catalysis process is energy-saving and environment-friendly, the operation is simple and convenient, the preparation process is simple and feasible, and a new solution is provided for efficient degradation of organic pollutants in water.

The invention discloses a COF aerogel composite material for PFAS treatment and a preparation method and application thereof, and relates to the field of pollutant adsorption, the COF aerogel composite material comprises the following components: 68.18%-70% of a COF material, 22.73%-90.91% of a CS solution, and 9.09% of a TP solution; the COF material is prepared from 0.0764 mmol of ETTA (Ethylene Terephthalic Acid), 30 mg of ETTA, 0.1528 mmol of a side functional monomer and 3 mL of an o-dichlorobenzene / n-butyl alcohol solvent. The volume ratio of orthodichlorobenzene to n-butanol in the orthodichlorobenzene / n-butanol solvent is 1: 1; and the side functional monomer comprises 0.025 mmol of TFTDA (Trifluorotoluene Diisocynate) / 0.127 mmol of BFB1M, and is named as COF-F1N5. A series of COF / aerogel synthesized by the method provided by the invention has the characteristics of ultralight weight, compression resistance, good stability and small specific surface area loss, overcomes the application limitation of COF powder, is easy to recover, and has better adsorption performance on PFAS.

This invention belongs to the field of lithium-ion battery technology, specifically relating to a method for constructing Si@COF-Co materials using porphyrin COF as a conductive nano-protective layer for nano-silicon and its application. The invention first adds a methanol solution of PEI to a methanol solution of nano-silicon, then dries it at high temperature to obtain PEI-modified nano-silicon Si-PEI. Next, Si-PEI and PVP are dispersed in o-dichlorobenzene / n-butanol, and then COF monomer and glacial acetic acid are added. After maintaining the mixture at 110-130℃ for 70-80 hours, it is washed, dried, and ground to obtain Si@COF. Finally, Si@COF and cobalt acetate tetrahydrate are dispersed in methanol, reacted at room temperature, and then washed, dried, and ground to obtain Si@COF-Co. This invention offers a simple, high-yield, and effective method. The synthesized material effectively alleviates the volume expansion of nano-silicon, improves the stability and reversibility of the electrode material, and can be used as a negative electrode material for lithium-ion batteries.

The present invention belongs to the technical field of organic synthesis, and specifically relates to a synthesis process of high-yield 1,4-bis(4-phenoxybenzoyl)benzene. The process is mainly prepared by using excess diphenyl ether and terephthaloyl chloride as reaction raw materials, using o-dichlorobenzene as reaction solvent, and under the catalytic action of aluminum chloride. The synthesis process of 1,4-bis(4-phenoxybenzoyl)benzene provided by the present invention successfully overcomes many challenges existing in traditional synthesis methods, such as many side reactions, low yield, and purification difficulties, by optimizing key parameters such as reaction conditions, solvent selection, catalyst dosage, and sample addition order. It is not only easy to operate, but also significantly improves the yield of the target compound, and also ensures the high purity and low impurity content of the product.

The present invention discloses a photocatalyst for the regeneration of coenzyme NADH and a preparation method thereof, wherein the photocatalyst is a donor-π-acceptor type conjugated organic polymer, with a triazine-based ligand as an acceptor unit and a heterocyclic ligand as a donor unit, wherein the molar ratio of the triazine-based ligand to the heterocyclic ligand is 1:(1-2), the triazine-based ligand raw material selects 2,4,6-trimethyl-1,3,5-triazine, and the heterocyclic ligand raw material selects a heterocyclic diformaldehyde containing a furan or thiophene structure. The photocatalyst is prepared by a solvothermal method through a Knoevenagel aldol condensation reaction, the reaction solvent selects a mixed solvent of n-butanol and o-dichlorobenzene or a mixed solvent of mesitylene and 1,4-dioxane, and the catalyst used in the reaction selects at least one of trifluoroacetic acid, potassium hydroxide, 1,8-diazabicycloundecane-7-ene, sodium hydroxide, and cesium carbonate. The developed photocatalyst has a donor-π-acceptor type conjugated structure, and has high catalytic activity, high selectivity, good stability, and easy separation and recovery for the regeneration of coenzyme NADH.

This invention discloses a covalent organic framework for the separation of krypton and xenon gases and its preparation method. Using tetrahedral symmetric aldehyde ligands with four sites and amino ligands with different side group substitution sites as raw materials, o-dichlorobenzene and n-butanol as solvents, and glacial acetic acid as catalyst, a covalent organic framework compound with a 7-fold interpenetrating PTS topological network structure is synthesized through pre-ultrasonic treatment, high-temperature reaction process, and purification steps such as filtration and extraction. The synthesized covalent organic framework compound can selectively adsorb and separate xenon-krypton mixed gases.

The present invention discloses an NH2-UiO-66 / PyCD-COF heterojunction photocatalyst and its preparation method and application. The preparation method includes: S1, dissolving zirconium chloride to obtain solution A; dissolving 2-aminoterephthalic acid to obtain solution B; S2, mixing and stirring, and reacting at 120-125 °C for 16-18 h to obtain NH2-UiO-66; S3, adding NH2-UiO-66, 1,3,6,8-tetrakis(4-formylphenyl)pyrene, and 2-chloro-1,4-phenylenediamine into an ortho-dichlorobenzene / n-butanol solution containing acetic acid, ultrasonic mixing in a Pyrex tube, freeze-degassing, and then vacuum-sealing; S4, reacting at 120 °C-130 °C for 3-5 days to obtain the NH2-UiO-66 / PyCD-COF heterojunction photocatalyst. The process of the present invention is simple and highly operable, and has excellent photocatalytic hydrogen production performance.

This invention discloses a highly crystalline connector-functionalized hydrophilic covalent organic framework nanofiber, its preparation method, and its applications. The preparation method uses 1,3,5-tris(4-aminophenyl)triazine and functionalized terephthalaldehyde as monomer raw materials, ultrasonically dispersed in a mixed solvent of n-butanol and o-dichlorobenzene. Acetic acid solution is added at room temperature and pressure. The mixture is processed in a container with one cycle of vacuuming and ultrasonic dispersion, repeated five times, and finally the container is completely evacuated. The product catalyst is obtained through further thermal polymerization, washing, and drying. This method elucidates an optimized strategy for synthesizing functionalized connector hydrophilic COFs, achieving considerable yields, and is simple and easy to operate. The nanofibers synthesized by this method possess typical mesoporous structures, large specific surface areas, high hydrophilicity, and high crystallinity, exhibiting high catalytic activity. They can efficiently synthesize hydrogen peroxide under visible light and pure water conditions, thus showing broad application prospects in the field of photocatalytic hydrogen peroxide production.

The invention discloses a magnetic amide functionalized covalent organic framework material and a preparation method and application thereof, the preparation method comprises the following steps: S1, uniformly dispersing Fe3O4 nanoparticles and ammonia water, adding tetraethyl orthosilicate, and reacting; s2, a product obtained in the step S1 and 3-aminopropyltriethoxysilane are uniformly dispersed and subjected to a reaction, and aminated magnetic nanoparticles Fe3O4 (at) SiO2-NH2 are obtained; and S3, uniformly dispersing the Fe3O4 (at) SiO2-NH2 and trialdehyde phloroglucinol in a mixed solution of o-dichlorobenzene and N, N-dimethylformamide, adding 4, 4 '-diaminobenzanilide, uniformly mixing, then adding an acetic acid solution, and reacting at the temperature of 100-120 DEG C for 3-5 days to obtain the magnetic covalent organic framework Fe3O4 (at) Am-COFs material. The Fe3O4atAm-COFs prepared by the preparation method disclosed by the invention has a large specific surface area, rapid magnetic separation capability and abundant active sites, so that the adsorption performance of the material on a target object is effectively improved.

The application relates to a high-selectivity o-dichlorobenzene nitration continuous production device and belongs to the technical field of chemical reaction equipment. The device comprises a multistage tubular reactor, a buffer tank, an underground ice water quenching pool, a power-off discharge assembly, a leakage monitoring assembly and a flow self-adjusting assembly. The flow self-adjusting assembly drives the deformation of a corrugated diaphragm by using the air pressure in the buffer tank, drives the linear adjustment of a throttle seat to adjust the feeding flow, realizes self-adaptive stable pressure feeding without electric control, the leakage monitoring assembly expands after absorbing the flange leakage liquid, drives the movement of a sliding rod and visually shows the alarm, realizes mechanical monitoring of hidden micro-leakage, and the power-off discharge assembly breaks the ceramic sealing plate by the gravity falling of a counterweight block when power is off, rapidly discharges the retained material to the underground ice water quenching pool for cooling. The application realizes self-adaptive adjustment of the feeding flow, accurate monitoring of flange micro-leakage and emergency discharge when power is off through a pure mechanical structure, and significantly improves the safety, stability and product selectivity of the nitration process.

The application belongs to the technical field of organic synthesis, and particularly relates to a method for catalytically synthesizing N-substituted-3-methyl indole compounds by using aza carbene oxazoline ring palladium compound. The application aims to provide a new synthesis method for N-substituted-3-methyl indole compounds, specifically, a high-catalytic-activity aza carbene oxazoline ring palladium compound is used as a catalyst to catalyze a direct coupling cyclization reaction of o-dichlorobenzene or o-bromochlorobenzene compounds and allyl arylamine, so as to obtain N-substituted-3-methyl indole compounds. The catalyst used in the application has high catalytic activity, the reaction has good product and functional group compatibility, in addition, the catalyst itself is easy to synthesize, and aryl chlorides used in the synthesis route are cheap and easy to obtain. Therefore, the synthesis route provided in the application has great competitive advantages and industrial production utilization value.

The present application belongs to the technical field of rectification separation, and provides a rectification separation and purification method for preparing high-purity o-dichlorobenzene. The present application adopts the design of loading surface-modified structured packing in the rectification section of the rectification tower. The structured packing is composed of an alumina ceramic matrix and a cross-linked copolymer layer. The cross-linked copolymer layer contains structural units formed by N-vinyl-2-pyrrolidone, 2-hydroxyethyl methacrylate and ethylene glycol dimethacrylate, and is prepared through a silanization and graft cross-linking polymerization process. The rectification tower is operated under the conditions of a tower top absolute pressure of 0.5-20 kPa and a reflux ratio of 2-6. The present application realizes the efficient separation of o-dichlorobenzene products with a purity of not less than 99.9 wt% from dichlorobenzene isomer mixtures, solves the problem that the structured packing in a low-pressure rectification system cannot simultaneously achieve low pressure drop, large flux and high separation efficiency, and the stability of the surface modification layer in a high-temperature organic vapor environment is insufficient, and has wide industrial application value.

The invention discloses a method for preparing a fullerene ester derivative, belonging to the field of synthesis of fullerene ester derivatives. The specific method comprises the following steps: using [60]fullerene and iodophenylmalonate as raw materials, and using o-dichlorobenzene as solvent, and subjecting the target product [60]fullerene cyclopropane dicarboxylate compound to a one-step thermal reaction in air. The invention has the advantages of a simple and novel synthesis method, good substrate universality, high yield, etc., and has broad application prospects.

The invention relates to the technical field of harmful substance detection, in particular to a magnetic covalent organic framework material for extracting organophosphorus pesticide in vegetables and a preparation method and application thereof.The preparation method comprises the steps that 1, Fe3O4 nanoparticles, TAPP, DHTP, o-dichlorobenzene and n-butyl alcohol are mixed and subjected to ultrasonic treatment, then acetic acid is added, the mixture is oscillated, and then the mixture is put into a reaction kettle to be heated for 2 d at the temperature of 120 DEG C; the product is washed and dried, and COF coated Fe3O4 is obtained; 2, COF coated Fe3O4 is uniformly dispersed in a zirconium chloride solution, zirconium chloride is dissolved with o-dichlorobenzene and n-butyl alcohol (v: v, 1: 1), then the solution is put into a reaction kettle, and a reaction is carried out for 12 h at the temperature of 120 DEG C; and washing and drying the product to obtain the Zr-COF coated Fe3O4. The Zr-COF-coated Fe3O4 material prepared by the invention can realize efficient extraction of various organophosphorus pesticides at the same time, has relatively strong matrix anti-interference capability and excellent enrichment and purification performance, and has the advantages of simple preparation method, relatively low cost and wide application prospect.

The present invention provides a method for separating mixed dichlorobenzenes. The method comprises: (a) contacting the mixed dichlorobenzenes with extractant A in an extractive distillation column for extractive distillation separation to obtain crude p-dichlorobenzene from the top of the extractive distillation column; (b) feeding the bottom material of the extractive distillation column and solvent B into a crystallization and precipitation unit to obtain crystals mainly composed of m-dichlorobenzene and o-dichlorobenzene, as well as a solvent phase of extractant A and solvent B; (c) heating the crystals mainly composed of m-dichlorobenzene and o-dichlorobenzene and feeding them into a rectification column for rectification separation, separating out the crude product containing solvent B from the top of the rectification column, and taking out the crude m-dichlorobenzene from the side line and the crude o-dichlorobenzene from the bottom of the column. The method of the present invention includes using extractive distillation technology, crystallization technology and rectification technology to separate the mixed dichlorobenzenes containing o-dichlorobenzene, m-dichlorobenzene and p-dichlorobenzene, and finally obtaining high-purity o-, m- and p-dichlorobenzene products.

The present application relates to the field of microbial technology, in particular to a strain of Rhodococcus sp YH-1, its application and aromatic hydrocarbon pollution degradation agent, the Rhodococcus sp YH-1 is preserved in China typical culture preservation center on April 30, 2024, and the preservation number is CCTCC NO:M2024845.The Rhodococcus sp YH-1 of the present application has good degradation performance to benzene, toluene, chlorobenzene and o-dichlorobenzene.When degrading for 96h, the degradation rate of Rhodococcus sp YH-1 to 1000mg / L toluene, chlorobenzene and o-dichlorobenzene all reaches more than 50%;The degradation rate to benzene with concentration of 20-1000mg / L reaches more than 90%.The results show that Rhodococcus sp YH-1 has good degradation effect to aromatic hydrocarbon, and it has high practical application value and broad development prospect in repairing aromatic hydrocarbon contaminated soil, purifying aromatic hydrocarbon contaminated air and treating aromatic hydrocarbon wastewater.

The application discloses a kind of solid-state luminescent Schiff base two-dimensional covalent organic framework material and its preparation method and application, belong to material field.The preparation method of the solid-state luminescent Schiff base two-dimensional covalent organic framework material of the present application includes the following steps: the amine with C2 symmetry, DAD, solvent and acetic acid aqueous solution are mixed, and solvent thermal reaction is carried out, to obtain the solid-state luminescent Schiff base two-dimensional covalent organic framework material;The solvent is o-dichlorobenzene and n-butanol.The COFs material prepared in the application has high crystallinity and porosity, and the solid-state absolute luminescence quantum yield is as high as 39%.

The invention provides a flexible polyimide COF composite diaphragm with a triazine structure, a preparation method and application of the flexible polyimide COF composite diaphragm in an aqueous zinc-iodine battery, and relates to the technical field of aqueous zinc-iodine batteries. The composite diaphragm is prepared by the following steps: preparing an organic framework material from pyromellitic dianhydride (PMDA) and 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine (TPT) in an o-dichlorobenzene / N-methyl pyrrolidone mixed solvent through a solvothermal method, and uniformly coating the surface of a glass fiber diaphragm with the organic framework material. The area capacity of the aqueous zinc-iodine battery of the composite diaphragm prepared by adopting a triazine structure and a flexible annular design reaches 7.8 mAh cm <-2 > or above under the ultrahigh surface current density of 20 mA cm <-2 >, high capacity and high coulombic efficiency are still kept after 800 cycles, the zinc ion diffusion coefficient reaches 4.07 * 10 <-8 > cm < s >, and the performance is remarkably superior to that of all existing diaphragm modification technologies.

The application provides adamantane-modified fullerenes (C 60 ) pyrrolines with enhanced fluorescent properties. The application discloses adamantane-modified fullerenes pyrrolines with enhanced fluorescent properties, and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing and dispersing fullerenes, paraformaldehyde, 1-adamantane methylamine and o-dichlorobenzene, reacting, evaporating a solvent under reduced pressure, separating by column chromatography, and recrystallizing to obtain adamantane-modified fullerenes pyrrolines. The adamantane-modified fullerenes pyrrolines are dissolved in m-xylene, and a poor solvent, isopropanol, is slowly added dropwise to form a clear liquid-liquid interface. The reaction liquid is shaken until the liquid-liquid interface disappears, and then is subjected to ultrasonic treatment, standing, precipitation, washing, and drying to obtain microcrystals. The synthesis process is simple, and raw materials are cheap and easy to obtain. The crystallization method is simple and effective, and the crystallization is good, so that the crystal morphology and size can be controlled. The obtained adamantane-modified fullerenes pyrrolines and cubic crystals have good solubility in organic solvents, excellent fluorescent properties, and symmetrical structure, which is beneficial to subsequent application.

The present invention discloses a lithium negative electrode artificial interface layer with enhanced nanofluid effect and its preparation method and application, relating to the field of new energy battery technology, including: placing a monomer and a solvent in a container for reaction to prepare a QL-COF material; wherein the monomer includes 1,3,5-tris(4-aminophenyl)benzene, o-dichlorobenzene and terephthalaldehyde; the QL-COF material is coated on a current collector to obtain a lithium negative electrode artificial interface layer with enhanced nanofluid effect. The beneficial effect of the present invention is that a nanofluid effect can occur inside a pore with a negatively charged interface and an aperture less than the Debye screening length, and the selectivity and diffusion capacity of lithium ions are enhanced by the pores of the QL-COF material, thereby realizing rapid single ion transmission, improving lithium ion transmission kinetics, and effectively improving the lithium ion migration number and lithium ion diffusion coefficient.

The invention provides a porous carbon material and a preparation method and application thereof. The preparation method of the porous carbon material comprises the following steps: (1) adding an amino compound and an aldehyde compound into a mixed solvent of o-dichlorobenzene and ethanol, adding a catalyst, uniformly dispersing under the ultrasonic action, sealing, reacting at room temperature, washing the obtained product with a detergent, and drying to obtain a COF material; and (2) taking the COF material as a precursor, adding molten salt, mixing and uniformly grinding, placing in a nitrogen tube furnace, controlling the heating rate, carrying out carbonization treatment, washing the product with an acid solution and deionized water for multiple times until the product is neutral, and drying to obtain the porous carbon material with uniform pore diameter. The organic connection unit system of the precursor COF material is rich, and the structure can be precisely regulated and synthesized; the prepared porous carbon material is uniform in aperture and complete in structure, has high specific surface area, rich nitrogen content and good stability, and can be widely applied to the fields of gas adsorption, supercapacitors and the like.

The present invention discloses a rhenium phthalocyanine complex, a preparation method thereof and an application thereof. The molecular formula of the rhenium phthalocyanine complex is Re2Pc, and the structural formula is shown in Formula I. The synthetic route is shown in Formula II, including: drying the Schlenk flask by roasting with a flame under a nitrogen atmosphere, evacuating and filling with nitrogen, cooling to room temperature, quickly adding the α-(ButO)8Pc ligand and Re2(CO) 10 , evacuating and filling with nitrogen, adding ortho-dichlorobenzene, heating the reaction mixture to reflux until the reaction is complete; cooling the reaction solution to room temperature, dissolving it with a small amount of dichloromethane, recrystallizing with petroleum ether, and a large amount of precipitation is generated; centrifuging the precipitate, retaining the centrifuged liquid and standing for 1-3 h, collecting the purple product, repeating the purification to obtain the Re2Pc complex, which can convert near-infrared light into heat energy, has good thermal stability and high photothermal conversion efficiency, can be used as or in the preparation of a photothermal conversion reagent for photothermal therapy, and the reaction steps are simple and the purification process is convenient and easy to operate.

The invention discloses a preparation method of a nano organic porous material, which comprises the following steps: respectively dissolving 1, 3, 5-triazine-2, 4, 6-tricarboxaldehyde and TAPP in o-dichlorobenzene at room temperature to form solutions, uniformly mixing the two solutions according to a molar ratio of 1, 3, 5-triazine-2, 4, 6-tricarboxaldehyde to TAPP of 4: 3, adding glacial acetic acid as a catalyst, reacting at 80-120 DEG C for 3-5 days, filtering, washing, and drying to obtain the nano organic porous material, namely the 1, 3, 5-triazine-2, 4, 6-triazine-2, 4, 6-triazine-2, 4, 6-triazine-2, 4, 6-tricarboxaldehyde. And after the reaction, obtaining a solid, washing the solid, and drying to obtain the nano organic porous material. The invention provides the preparation method of the nano organic porous material, the synthesized nano organic porous material has a microporous structure, the surface and pore walls of a material framework have a large number of nitrogen-rich active sites, and the nano organic porous material has excellent iodine vapor adsorption capacity and CO2 adsorption capacity and is wide in application prospect.

A lithium-mediated electrochemical method for ammonia synthesis, relating to the field of ammonia synthesis technology, solves the technical problems of severe side reactions, limited nitrogen mass transfer, and poor interfacial stability in existing lithium-mediated ammonia synthesis systems. Tetra(4-formylphenyl)porphyrin iron and an amino-containing multifunctional organic ligand are added to a mixed solvent of n-butanol and o-dichlorobenzene. An acid catalyst is added, and after stirring until homogeneous, the mixture is degassed and sealed for reaction. The solid product is collected by centrifugation, washed, and dried to obtain COF powder. This powder is then added to an ethanol-water solution, followed by ultrasonic dispersion with Nafion solution. The powder is then drop-coated / sprayed onto the surface of a carbon paper current collector and dried. This powder is used as the working electrode, with a platinum mesh as the counter electrode, a platinum wire as the quasi-reference electrode, and a LiBF4 tetrahydrofuran solution as the electrolyte. Ethanol is used as the proton donor, and electrolysis is performed under a nitrogen atmosphere using a constant current. This invention can be applied to the field of ammonia synthesis technology.

The invention relates to preparation of a Pt (at) TpBTTBpy-COF composite material and application of the Pt (at) TpBTTBpy-COF composite material in photocatalytic full water splitting performance. In order to solve the problems of photo-induced electron-hole recombination, low sunlight utilization rate and the like of a common two-component COFs photocatalyst, the invention provides a preparation method of a three-component COFs material composed of three monomers, which comprises the following steps: firstly, mixing an n-butyl alcohol solution containing Pt NPs, 1, 3, 5-trialdehyde phloroglucinol, benzo [1, 2-B: 3, 4-B ': 5, 6-B'] trithiophene-2, 5, 8-trialdehyde, 5, 6-dialdehyde, 1, 3, 5, 6-tetramethyl-1, 3, 5-triazine-2-ketone, 1, 3, 5, 6-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3 The preparation method comprises the following steps: uniformly mixing 2, 5-diamino-2, 2-dipyridyl with o-dichlorobenzene, n-butyl alcohol and acetic acid, carrying out ultrasonic treatment, carrying out three times of freeze-thaw cycle degassing in a liquid nitrogen bath, sealing, heating at 120 DEG C for 72 hours, filtering, washing with tetrahydrofuran for several times, and drying to obtain the Pt-coated TpBTTBpy-COF material. The preparation process is simple and effective, and the proportion of the monomer to the solvent is proper; the photocatalyst provided by the invention can effectively improve the utilization rate of sunlight and enhance the efficiency and stability of photocatalytic complete water splitting. Experiments show that the composite material has excellent photocatalytic full water splitting performance, the rate of full water splitting hydrogen production under visible light irradiation can reach 286.4 [mu] mol.h <-1 >. G <-1 >, and the rate of oxygen production can reach 143.2 [mu] mol.h <-1 >. G <-1 >.

The invention relates to polyethylene for a protective film and a manufacturing method thereof. Provided are: an ethylene-based polymer which further improves the balance between few fish eyes and good transparency; and a method for producing an ethylene-based polymer. An ethylene-based polymer in which the light scattering area value (RLS) of the ethylene-based polymer is from 350 to 540 (inclusive). RLS represents a light scattering area value of a solution obtained by dissolving 40 mg + / -0.2 mg of the ethylene-based polymer in 20 mL + / -0.1 mL of orthodichlorobenzene.

The present invention relates to the technical field of organic compound synthesis, and particularly relates to a benzazepine spirodihydroindole compound, a synthesis method and an application thereof. A tryptamine derivative, an o-iodobenzoic acid or o-bromobenzoic acid derivative, and an isonitrile derivative are successively added to a methanol solution of an aldehyde or ketone compound, and the mixture is stirred at room temperature overnight. The product precipitates in solid form, and the Ugi adduct is obtained by filtration. The Ugi adduct, Pd(OAc)2, Ph3P, and K2CO3 are added to a sealed container and stirred. The container is evacuated and filled with nitrogen, and anhydrous o-dichlorobenzene is added and the reaction is sealed. The reaction is monitored by TLC, and the sample is loaded wet and subjected to silica gel column chromatography to obtain the target product. Starting from cheap and readily available common raw materials, the present invention rapidly combines aldehydes, amines, carboxylic acids, and isonitriles into Ugi adducts with diverse skeletons and high functionality through the Ugi four-component reaction under mild reaction conditions. Using this as a substrate, a highly chemoselective dearomatization cyclization reaction of a complex Ugi adduct catalyzed by palladium is carried out to obtain a series of benzazepine spirodihydroindole derivatives.

A toner, comprising a toner particle comprising a binder resin, wherein the binder resin comprises an amorphous polyester and a crystalline polyester; (i) a weight-average molecular weight of a soluble matter of the crystalline polyester in o-dichlorobenzene at 100° C. is 1500 to 4900; (ii) the crystalline polyester comprises a modified crystalline polyester having at least one terminal-modified structure selected from among a structure in which a hydroxy group at a main chain terminal of the crystalline polyester is terminal-modified with a C16 to C31 aliphatic monocarboxylic acid, and a structure in which a carboxy group at a main chain terminal of the crystalline polyester is terminal-modified with a C15 to C30 aliphatic monoalcohol; and (iii) a content ratio of the terminal-modified structure in the crystalline polyester is 80.0 mol % or higher.