133 results about "Trimesic acid" patented technology

The invention discloses preparation of a high-performance carbon matrix embedded iron-based catalyst based on a metal organic framework precursor and application of the high-performance carbon matrix embedded iron-based catalyst in reverse water-gas shift reaction. In the preparation process, commercially available 1, 3, 5-trimesic acid iron (the chemical formula is C9H3FeO6, abbreviated as Fe-BTC) is selected as a raw material, pyrolysis treatment is carried out in an argon atmosphere, then air passivation is carried out, and finally the high-performance carbon matrix embedded iron-based catalyst based on the metal organic framework precursor is successfully prepared. The MOF-600 has excellent performance in many catalysts, the carbon dioxide production rate reaches 24.0 mmol CO.gcat <-1 >. S <-1 > at the temperature of 400 DEG C in a reverse water gas shift reaction, the performance is remarkably superior to that of an existing non-noble metal catalyst, and extremely high catalytic efficiency and application potential are shown.

The invention relates to a fluoro-ligand regulated metal organic framework material and a preparation method and application thereof, the fluoro-ligand regulated metal organic framework material is prepared and synthesized by using zirconium oxychloride as a metal node and trimesic acid / 5-fluoroisophthalic acid as an organic ligand through a reflux method; the unit structural formula of the fluorinated ligand metal organic framework material is [Zr6O4 (OH) 4 (BTC) 2-x (F-BTC) x (AA) y (H2O) z], according to the preparation method, trimesic acid and part of 5-fluoroisophthalic acid are co-coordinated, a C-F bond is introduced to regulate and control the electronic environment around a Zr node through deletion of a connecting site, uniform nucleation of crystals is promoted, the grain size of the obtained material is remarkably reduced, and the dispersity is higher.

The present application belongs to the technical field of the synthesis of chiral boron compounds, and in particular relates to an MOF-Cu(II) / CMC composite material, and a preparation method therefor and the use thereof. The preparation method for an MOF-Cu(II) / CMC composite material of the present application comprises: dropwise adding an aqueous solution of sodium carboxymethyl cellulose to an aqueous solution of a bivalent copper salt, performing solid-liquid separation, mixing obtained composite microspheres with an organic solution of trimesic acid, heating the resulting mixture, and subjecting same to solid-liquid separation, so as to obtain an MOF-Cu(II) / CMC composite material. The MOF-Cu(II) / CMC composite material is used in an asymmetric chiral boron addition reaction. The reaction is performed at room temperature, involves mild conditions, is applicable to a wide range of substrates and has a high yield and enantioselectivity. Moreover, the method can achieve the synthesis of a chiral organic boride in a solvent having simple components, providing an efficient new method for the preparation of drug molecules and active intermediates, and also broadening the range of substrates used for the preparation of chiral organic borides.

The invention provides a Z-type heterojunction material for synchronously removing phosphorus and tetracycline in sewage. The material is composed of a hexagonal flaky nano magnesium-aluminum-iron hydrotalcite matrix with the size of 30-100 nm and a metal oxide growing on the surface. The preparation method of the material comprises the following steps: carrying out hydrothermal treatment on magnesium-aluminum-iron hydrotalcite and trimesic acid in N-N dimethylformamide liquid, growing a metal organic framework compound on the surface of the magnesium-aluminum-iron hydrotalcite in situ through dissolved-out metal ions and trimesic acid, and roasting the metal organic framework compound to obtain the Z-type heterojunction material. The Z-type heterojunction material can synchronously and efficiently remove phosphorus and tetracycline in sewage, the synchronous removal rates of 50 mg of the material to phosphorus and tetracycline are 97.60% and 95.47% respectively in 100 mL of a phosphorus (concentration of 25 mg / L) water sample and a tetracycline (concentration of 50 mg / L) water sample, and the synchronous removal rates of phosphorus and tetracycline are still 87.62% and 85.57% after continuous circulation for five times. The Z-type heterojunction material can be applied to the aspect of phosphorus and tetracycline mixed sewage treatment in the breeding industry.

The invention discloses a metal oxide / carbon / nickel composite material, a preparation method and application of the metal oxide / carbon / nickel composite material to a magnesium-based hydrogen storage material, and belongs to the field of hydrogen storage energy. The problems that a single-component catalyst in the MgH2 hydrogen storage material is low in active site, the interface is inactivated in the circulation process and the like are solved. A metal nickel source and a cerium source are combined with an organic ligand trimesic acid to form bimetal MOF, CeO2 / C / Nix obtained after calcination inherits the high specific surface area of MOF, metal is evenly dispersed in a carbon matrix, CeO2 / C / Nix is introduced into MgH2, microscale efficient catalysis of MgH2 is achieved, when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and the specific surface area of CeO2 / C / Nix is 27.8 wt.%. After 10 cycles, the capacity retention rate is 98.8%, excellent hydrogen storage performance is shown, and a unique insight is provided for large-scale production of the magnesium-based hydrogen storage material.

The application belongs to the technical field of nanometer material preparation, and discloses a regulation method for synthesizing copper coordination polymers with different dimensions. The method is to obtain copper coordination polymers with different dimensional morphologies under room temperature conditions by controlling the reaction sequence of copper ion solution, uniform benzenetricarboxylic acid and 4,4-dipyridine and the molar ratio of uniform benzenetricarboxylic acid and 4,4-dipyridine. The synthesis process is simple, the cost is low, the dimension of the morphology is adjustable, large-scale industrial production is possible, and good economic benefits and environmental benefits are achieved.

The application relates to a preparation method of a composite semiconductor photocatalyst and application thereof, and comprises the following steps: preparing g-C3N4 nanosheets; dispersing the prepared g-C3N4 nanosheets into methanol at a mass fraction of 10% to 70%, then adding 750 mg of trimesic acid and 150 mg of bismuth nitrate, and ultrasonic treating for 10 min to obtain a mixed suspension; transferring the mixed suspension into a microwave reaction kettle for reaction, the reaction temperature is 90 to 130 DEG C, the reaction time is 30 to 60 min, and centrifugal drying is carried out after the reaction is completed; then g-C3N4 / Bi-MOF is obtained through anhydrous methanol washing and freeze drying; a heterostructure is constructed, the energy band structure is changed, the charge transmission resistance is reduced, the photocatalytic activity is improved, the photocatalyst has two different structure and property photocatalytic activity centers, and the photocatalytic activity is changed from the energy band structure and the catalytic activity.

The invention belongs to the technical field of crystal form drug molecules, and particularly relates to a baricitinib-trimesic acid eutectic crystal and a preparation method thereof. The baricitinib-trimesic acid eutectic crystal provided by the invention is good in stability and high in solubility, and has improved pharmacokinetics, so that subsequent development requirements of drugs are met; the preparation method is simple to operate, easy to control the crystallization process, good in reproducibility and suitable for industrial production.

The invention discloses a rapid hemostatic material, and belongs to the technical field of hemostatic materials, and the hemostatic material has low toxicity, low heat release and structural stability. The hemostatic material comprises a metal organic framework material or a mixture of a plurality of metal organic framework materials; the metal organic framework material is obtained by coordination of metal aluminum ions and organic ligands, and the organic ligands are selected from one or more of phthalic acid, isophthalic acid, trimesic acid, fumaric acid and other substances and derivatives thereof. Compared with a zeolite hemostatic material, the hemostatic material disclosed by the invention has the advantages of high hemostatic speed, mild hemostatic reaction and less heat release; compared with other metal organic framework hemostatic materials, the hemostatic material disclosed by the invention has the characteristics of high structural stability and high biocompatibility.

The invention belongs to the technical field of battery materials, and provides a sea urchin-shaped Mn2O3 positive electrode material and a preparation method and application thereof. The preparation method comprises the following steps: mixing manganese acetate, polyvinylpyrrolidone and ethanol to obtain a mixed solution; mixing trimesic acid and ethanol to obtain a trimesic acid solution; mixing the mixed solution and a trimesic acid solution, heating and stirring to obtain a precursor; and calcining the precursor. The Mn2O3 positive electrode material provided by the invention has a sea urchin-shaped morphology, provides more reaction active sites, has a relatively high specific surface area, increases the contact area with an electrolyte, accelerates electrochemical reaction, and improves the electrochemical activity and structural stability of an aqueous battery; the sea urchin-shaped morphology is beneficial to relieving volume expansion caused by the positive electrode material in the charging and discharging process, and the cycling stability is improved; the preparation method is simple, raw materials are easy to obtain and low in cost, the method is simple, and the prepared sea urchin-shaped Mn2O3 positive electrode material is good in controllability and suitable for large-scale production.

The application discloses a dehydrogenation catalyst and a synthesis method and application thereof. The synthesis method of the catalyst comprises the following steps: (1) mixing soluble copper salt, soluble zinc salt and soluble aluminum salt with dichloromethane and ethanol to obtain a mixed solution containing copper, zinc and aluminum, and then adding polylactic acid and stirring to obtain a spinning solution; (2) using a coaxial electrostatic spinning nozzle to electrostatically spin the spinning solution obtained in the step (1) and collecting a solid; (3) placing the solid obtained in the step (2) in an ethanol solution of trimesic acid to perform a reaction, and then washing and drying the catalyst precursor after the reaction is completed; and (4) calcining and post-treating the catalyst precursor obtained in the step (3) to obtain the catalyst. The catalyst obtained by the method has high conversion rate and selectivity in the reaction of dehydrogenating 1,4-butanediol to prepare gamma-butyrolactone.

The invention discloses a 1, 3, 5-isopropyl trimellitate composite material and an application of the 1, 3, 5-isopropyl trimellitate composite material, and the 1, 3, 5-isopropyl trimellitate composite material is in a composite material form of 1, 3, 5-isopropyl trimellitate (SYZ) and metatitanic acid (TiO2.H2O). The obtained composite material shows relatively high specific capacity and certain cycle and rate performance, and can be used as a lithium ion battery negative electrode material.

The purpose of this invention is to synthesize a carbon dot-based nanozyme and its cascade detection application. Using ascorbic acid and 1,3,5-pyromellitic acid as raw materials, ethylenediamine as a nitrogen dopant, and ferric chloride as a metal source, a one-step microwave synthesis method is employed in a microwave reactor (glass material). This method solves the problem of high energy consumption caused by the need for high temperature, high pressure, or long reaction time in existing technologies. Characterization and analysis of its morphology, structure, and properties revealed that the prepared iron-nitrogen co-doped carbon dot-based nanozyme consists of two-dimensional spherical carbon nanoparticles with excellent Fe-N... x The active site exhibits POD-like enzyme activity, with catalytic activity exceeding that of most reported nanozymes. Furthermore, this invention synergistically utilizes its peroxidase-like catalytic activity and photodynamic effect to significantly enhance reactive oxygen species (ROS) generation, achieving highly sensitive detection of organophosphorus pesticides and significantly reducing their detection limits. This synergistic strategy provides a new approach for expanding the application of nanomaterials in chemical analysis and sensing.

The invention discloses a preparation method and application of nitrogen-oxygen co-doped graded porous carbon, the method takes 2, 3, 5, 6-tetra (amino) p-benzoquinone as a carbon precursor and a nitrogen doping agent and potassium trimesic acid as an activating agent and a confinement template, the method comprises the following steps: firstly, grinding and uniformly mixing the 2, 3, 5, 6-tetra (amino) p-benzoquinone and the potassium trimesic acid, transferring into a magnetic boat, then putting into a tubular furnace, and carrying out heat preservation for 2-4 hours; under the protection of argon, heating is performed to prepare the nitrogen-oxygen co-doped hierarchical porous carbon, and the obtained nitrogen-oxygen co-doped hierarchical porous carbon has proper nitrogen-oxygen content and rich hierarchical pore structures. 2, 3, 5, 6-tetra (amino) p-benzoquinone is taken as a carbon precursor and a nitrogen doping agent, potassium trimesic acid is taken as an activating agent and a confinement template, nitrogen-oxygen co-doped hierarchical porous carbon is directly constructed by adopting a one-step method, the specific surface area is between 1321.76 and 1789.52 m < 2 > / g, and the total pore volume is between 0.85 and 1.25 cm < 3 > / g; when the material is used as the positive electrode material of the zinc ion hybrid capacitor, the specific capacitance is 205.02 mAh / g under the current density of 0.1 A / g, and the energy density is up to 182.45 Wh / kg.

The application provides a Zn-MOF material containing lithium elements, which is prepared from a zinc source material, a first ligand, a second ligand and a lithium source material, wherein the first ligand is trimesic acid, and the molecular structure of the second ligand satisfies general formula I: R1-R8 are independently selected from hydrogen, methyl, methoxy and ethyl, and 0<=n<3. The Zn-MOF material containing lithium elements is prepared by a specific preparation method, has high lithium ion conductivity and large lithium ion transference number, and can widen the electrochemical stability window of a battery using the Zn-MOF material containing lithium elements and improve the cycle stability of the battery.

The invention discloses a preparation method and application of a zirconium-based metal organic gel material, and the preparation method comprises the following steps: (1) adding zirconium oxychloride into distilled water, stirring and dissolving at room temperature to obtain a zirconium oxychloride solution; (2) adding trimesic acid into absolute ethyl alcohol, and stirring and dissolving at room temperature to obtain a trimesic acid solution; (3) mixing the zirconium oxychloride solution and the trimesic acid solution at room temperature, and continuously stirring to obtain a mixed solution; and (4) carrying out hydrothermal reaction on the mixed solution, naturally cooling to room temperature after the reaction is finished, and carrying out freeze drying to obtain the zirconium-based metal organic gel material. The prepared zirconium-based metal organic gel material is used for treating pulp wastewater with the pH value of 2-12 and containing lignin and / or humic acid organic matters, and the problem that when an existing metal organic gel material is used for treating the pulp wastewater, the pH application range is narrow can be solved.

The invention relates to the technical field of preparation of antibacterial materials, in particular to a two-dimensional nickel (II) coordination polymer as well as a preparation method and antibacterial application thereof. The preparation method comprises the following steps: mixing a dpb solution, a btc solution, a Ni (NO3) 2 solution, acetonitrile and water, carrying out a solvothermal reaction for 4-5 days, carrying out natural cooling crystallization, washing and drying to obtain [Ni3 (dpb) 2 (btc) 2 (H2O) 2] n, and according to the complex, nickel (II) has two coordination modes, and nickel (II) is coordinated with carboxyl oxygen atoms of two trimesic acid, oxygen atoms of two water molecules and nitrogen atoms of two ligands; nickel 2 (II) is coordinated with three nitrogen atoms of a ligand and three oxygen atoms of two trimesic acids to form a one-dimensional ladder-shaped chain structure, and the ladder-shaped chain is further bridged with the ligand to form a two-dimensional layered structure. The compound has very good thermal stability, has a good inhibition effect on staphylococcus aureus and escherichia coli, is non-toxic to human embryo kidney cells in 24 hours and 48 hours, and can be used as a bacteriostatic drug material carrier in the aspect of medicine.

The invention provides polyester resin for a self-dusting and high-hardness powder coating as well as a preparation method and application of the polyester resin, and belongs to the technical field of powder coatings. The polyester resin is obtained by mainly polymerizing trimesic acid, N, N-bis (3-aminopropyl) methylamine, 1, 6-hexamethylenediamine, dodecanedioic acid, 2, 5-dimethyl-2, 5-hexanediol, 1, 3-malonic acid, sebacic acid, triethylene glycol, 2, 3-naphthalene dicarboxylic anhydride and the like which are used as main raw materials, and polyester resin 1 and polyester resin 2 which are greatly different in characteristic are respectively prepared by adopting a double-kettle combination mode. And then mixing at high temperature. Good matting and self-frosting effects can be achieved without adding a sand texture agent, and the hardness of a coating film is high.

The invention provides a Fe / Cu-BTC-BA catalyst as well as a preparation method and application thereof, and relates to the technical field of metal organic framework materials. The preparation method comprises the following steps: mixing an iron source, a copper source, trimesic acid, benzoic acid and hexadecyl trimethyl ammonium bromide with a solvent, carrying out solvothermal reaction at 120-140 DEG C for 20-28 hours, and filtering, washing and drying to obtain the target catalyst. Fe-Cu double active sites are constructed and are combined with double ligands to induce Cu < 2 + > to be converted into Cu < + >, so that the Lewis acidity and hydrogen sulfide adsorption activation capability are enhanced, the skeleton stability is improved, and meanwhile, the pore structure is optimized. The catalyst has the advantages of high specific surface area, highest sulfur capacity of 7.8%, high desulfurization rate and stable structure, and is suitable for catalytic desulfurization of sulfur-containing gas.

The invention discloses a preparation method and application of benzenetricarboxylic acid isomer modified chitosan, and the preparation method comprises the following steps: step 1, respectively dissolving trimesic acid, trimellitic acid and trimellitic acid in a sodium hydroxide solution to obtain a benzenetricarboxylic acid solution; 2, dissolving chitosan with an acetic acid solution to obtain a chitosan mixed liquid; 3, slowly adding the benzenetricarboxylic acid solution obtained in the step 1 into the chitosan mixed liquid obtained in the step 2, and continuously stirring to react until a white gel material is formed; and 4, filtering the white gel material prepared in the step 3, washing to be neutral, and drying to obtain the adsorbent. The three adsorbents prepared by the invention all have unique space structures and surface chemical characteristics, and anionic polymer chains of the adsorbents are rich in carboxyl, carbon-carbon double bonds, carbonyl and other functional groups, so that high-selectivity adsorption of rare earth metal lanthanum ions can be realized, and the adsorbent is suitable for recognition, separation and recovery of lanthanum ions in water with complex components.

This invention discloses a method for preparing a Zr-MOF-NH2 defluorinating agent and its application in the treatment of fluoride-containing wastewater, specifically relating to the field of deep defluorination technology. The method involves preparing a precursor solution by adding 1,3,5-pyromellitic acid, 5-aminoisophthalic acid, and concentrated hydrochloric acid to a mixed solution of acetic acid and water. ZrOCl2·8H2O is then added and the mixture is heated under reflux. After centrifugation, washing with organic solvents, and vacuum drying, a zirconium-based metal-organic framework defluorinating agent with –NH2 functional groups is obtained. This defluorinating agent exhibits strong affinity and high adsorption capacity for fluoride ions, demonstrates good defluorination performance over a wide pH range, and can reduce the fluoride ion concentration in actual fluoride-containing wastewater to a low level. It also boasts advantages such as simple process, mild conditions, good continuous operation performance, and suitability for engineering applications.

The application relates to preparation and application of carbon dot composite terbium metal organic framework material which can be used for uric acid identification in urine. S1, raw materials are selected, including terbium nitrate, trimesic acid, ammonium bicarbonate and sodium citrate; S2, trimesic acid is dissolved and stirred; S3, terbium nitrate solution is added into the solution obtained in S2 and stirred; S4, standing, centrifugal drying and then white terbium metal organic framework material is obtained; S5, ammonium bicarbonate and sodium citrate are dissolved in deionized water, ultrasonic treatment is carried out, then the solution is transferred into a high-pressure reaction kettle and reacts; S6, the solution obtained in S5 is centrifuged, the supernatant is filtered by using a microporous filter membrane, nitrogen-doped carbon dots are obtained by dialysis; S7, different volumes of carbon dots are added into the terbium metal organic framework material and stirred; S8, carbon dot composite terbium metal organic framework material is obtained through centrifugal drying; and S9, the obtained carbon dot composite terbium metal organic framework material is used for uric acid detection.

The present application relates to the field of porous materials, and more particularly to a method for steam-assisted one-step synthesis of hierarchical HKUST-1 material, comprising the following steps: (1) dissolving a copper source and a trimesic acid in a solvent to obtain a precursor solution; (2) placing the precursor solution, an etchant and an adsorbent in different placement zones in the same reactor, respectively, and keeping the precursor solution, the etchant and the adsorbent from contacting each other, and the steam in the reactor can flow between the placement zones to realize steam phase reaction and steam etching; (3) sealing the reactor in step (2) and heating to react, and the obtained solid product is washed, filtered and dried to obtain the hierarchical HKUST-1. The synthesis process and the etchant post-processing process are carried out simultaneously, and the hierarchical HKUST-1 is prepared by one-pot method, which shortens the preparation period, is simple to operate, low in cost and conducive to industrial production.

The application relates to the technical field of battery preparation, and discloses a preparation method of a composite electrode material, the composite electrode material and a battery, step one: anhydrous magnesium chloride and trimesic acid are respectively dissolved in an N,N-dimethylformamide solution to form transparent solutions, the anhydrous magnesium chloride solution and the trimesic acid solution are mixed and stirred to form a precipitate, and the prepared sample is centrifuged and separated, step two: carbonization is carried out in a nitrogen atmosphere, and after heating and heat preservation in the nitrogen atmosphere, natural cooling is carried out to room temperature to obtain the composite electrode material C-Mg-S loaded with Mg single atoms; the composite electrode material C-Mg-S loaded with Mg single atoms has a fluffy three-dimensional porous crosslinked structure, the three-dimensional porous carbon-based structure is beneficial to increasing the loading of sulfur, and can improve the conductivity of the composite material; when used as a battery electrode material, the composite electrode material has a relatively high charge-discharge specific capacity, excellent rate performance and good cycle stability.

The invention discloses a photocatalytic synergistic antibacterial material based on metal organic frameworks (MOFs), which is prepared by the following steps: S1, taking trimesic acid, 2, 6-diaminopyridine, zinc acetate and titanium oxalate as raw materials, and preparing a bimetallic MOFs carrier, namely Ti / Zn-MOFs, through a hydrothermal method; s2, loading light response enhanced particles CDs on the Ti / Zn-MOFs, so as to obtain Ti / Zn-MOFs (at) Mn-CDs, namely the photocatalytic synergistic antibacterial material based on the metal organic framework MOFs. The photocatalytic synergistic antibacterial material disclosed by the invention is obtained by loading the photoresponse enhanced particles CDs on the bimetal MOFs carrier in situ, and the Ti / Zn-MOFs and the Mn-CDs are constructed to form a composite system, so that the synergistic enhancement effect of the Ti / Zn-MOFs and the Mn-CDs on improving the antibacterial performance can be realized.

The invention relates to the technical field of immunosensors, in particular to a CuO composite material, an immunosensor and a preparation method and application of the immunosensor. The preparation method of the CuO composite material comprises the following steps: dissolving polyvinylpyrrolidone and copper salt in an organic solvent to obtain a solution A; dissolving trimesic acid in an organic solvent to obtain a solution B; mixing the solution A and the solution B, and carrying out a third heating reaction to obtain Cu MOF; the Cu MOF is dissolved in an organic solvent, In (NO3) 3 * xH2O and terephthalic acid are added, a fourth heating reaction is carried out, Cu MOF (at) In MOF is obtained and calcined, and CuO (at) In2O3 is obtained. The invention also provides the CuO composite material prepared by the method, a catalytic material combined with an antibody, an immunosensor and a preparation method. The problem that the catalytic performance of a single material in an existing ECL sensor is difficult to meet the sensitive detection requirement is solved.

The application provides a sandwich-structured photocatalyst, which is constructed by TiO2 nanosheets and a Co-Fe / MOF with bimetallic activity, the TiO2 nanosheets are covered on the surface of the Co-Fe / MOF to form a layered sandwich structure, and the Co-Fe / MOF is a metal organic framework compound prepared from a precursor of uniform trimellitic acid, cobalt and iron. The precursor of cobalt and iron is stirred and dissolved in an organic solvent, the TiO2 nanosheets are dispersed and immersed in the precursor solution, then the uniform trimellitic acid is added into the immersion liquid to be stirred and ultrasonically dispersed, and then the reaction is carried out in an autoclave by heating, the reaction liquid is centrifuged, washed and vacuum dried to obtain the sandwich-structured photocatalyst TiO2NS@Co-Fe / MOF. The preparation method of the sandwich-structured photocatalyst is simple in reaction system and simple in preparation process, and is suitable for large-scale production. The photocatalyst prepared by the application combines the double functions of the TiO2 nanosheet photocatalysis and the Co-Fe / MOF heterogeneous Fenton interface catalysis, plays a synergistic effect, and can effectively degrade phenolic substances in wastewater.

This invention discloses a copper-chromium catalyst, its preparation method, and its application. The preparation method of the catalyst includes: (1) mixing polylactic acid with dichloromethane and ethanol to obtain a polymer solution, adding a soluble copper salt to it, stirring, and obtaining a spinning solution; (2) using a coaxial electrospinning nozzle to perform electrospinning with the obtained spinning solution, and collecting the obtained solid; (3) placing the obtained solid in an ethanol solution of trimesic acid to react, washing and drying after the reaction, and collecting the obtained solid; (4) dissolving a soluble chromium salt in ethanol and reacting it with the obtained solid, then washing and drying, and collecting the obtained catalyst precursor; (5) calcining the obtained catalyst precursor to obtain an unformed catalyst, then pressing it into tablets to obtain the copper-chromium catalyst. This catalyst can improve the conversion rate and selectivity of the catalyst in the hydrogenation of dimethyl maleate to prepare 1,4-butanediol and co-production of γ-butyrolactone and tetrahydrofuran.

The invention discloses a mechanochemical synthesis method of a bismuth-based metal organic framework (Bi-MOF) and application of the Bi-MOF. The method comprises the following steps: mixing bismuth nitrate pentahydrate and trimesic acid according to a mass ratio of (1: 0.3)-(1: 5), adding a grinding medium and a liquid-phase auxiliary agent, and carrying out ball-milling reaction at room temperature; the ball milling rotating speed is 230-580 revolutions per minute, and the ball milling time is 8-72 hours; and after the reaction is finished, separating, washing and drying to obtain the Bi-MOF material. The invention further provides the Bi-MOF material prepared by the method, a bismuth / carbon composite material obtained by pyrolysis of the Bi-MOF material, and an application of the Bi-MOF material in a sodium ion battery negative electrode. The mechanochemical method is successfully applied to green synthesis of Bi-MOF for the first time, the process is simple, the condition is mild, a large amount of solvent is not needed, large-scale production is easy, and the defects that a traditional solvothermal method is high in energy consumption, high in pollution and low in yield are overcome. The obtained Bi-MOF is good in crystallinity, and the bismuth / carbon composite material derived from the Bi-MOF shows high specific capacity and excellent rate capability in a sodium-ion battery negative electrode and has good application prospects.

The application relates to an antioxidant corrosion inhibitor for oil wells and a preparation method thereof, and belongs to the technical field of petroleum chemical corrosion and protection. The preparation method of the antioxidant corrosion inhibitor comprises the following steps: dissolving thiourea in an alcohol organic solvent, heating to 40-60 DEG C, adding trimesic acid and a catalyst, heating to reflux for 6-8 hours, and performing distillation purification, washing and vacuum drying to obtain an intermediate; dissolving glucose in water and heating to 30-35 DEG C, adding sodium hydroxide and the intermediate, heating to reflux for reaction for 6-8 hours, and performing rotary evaporation under reduced pressure to obtain the antioxidant corrosion inhibitor. The antioxidant corrosion inhibitor has the advantages of not being easy to decompose under high temperature, strong adsorption, good dissolving dispersity in high salinity simulated formation water and the like, and has a wide application prospect in oil well exploitation.