693 results about "Trimesic acid" patented technology

The invention provides a metal organic framework material used for absorbing and separating CO2 and a preparation method thereof. The metal organic framework material is a rigid metal carboxyl compound cluster-like structure which is formed by transition metal ions and multidentate organic ligands through covalent bonds and intermolecular forces. An amine polymer is modified on the metal organic framework material; and the metal organic framework material used for absorbing and separating the CO2 has a specific surface area of 1,000 to 1,200 m<2>/g, and a pore volume of 0.4 to 0.6 cm<3>/g. The preparation method comprises the following steps of: respectively dissolving the nitrate, the chloride or the carbonate of copper or zinc and 1,3,5-trimesic acid together in a stoichiometric ratio in water or an organic solvent; mixing uniformly and sufficiently to react to obtain a BTC bridged complex crystal; and applying a product obtained by reacting an obtained BTC bridged complex crystal with the solution of polyethyleneimine to the metal organic framework material used for absorbing and separating the CO2. The material can realize selective absorption of a gas under a low pressure.

The invention discloses a method for rapidly synthesizing a BTC (1,3,5-benzenetricarboxylic acid)-based nanoscale organometallic framework material at room temperature. The nanomaterial is prepared by the following steps: mixing metal acetate aqueous solution with BTC solution at room temperature, and reacting to obtain BTC-based organometallic framework nanoparticles. The method is rapid, simple and energy-saving; the yield is high; the used raw materials and solvents are inexpensive and easily available; the safety problem of commonly used nitrate is not caused; the method is favorable to the industrial production and has wide application prospects in the fields of catalysis, adsorption, drug carriers, building of nano devices and the like.

The invention relates to a preparation method and application method of a titanium dioxide nanosheet supported MIL-100 (Fe) composite photocatalysis material, belongs to the field of titanium dioxide photocatalysis, and especially relates to the field of titanium dioxide nanosheet supported porous metal organic skeleton (MOFs) composite materials. The preparation method comprises the following steps: 1, uniformly stirring tetrabutyl titanate and hydrofluoric acid at normal temperature, putting the obtained mixture in a hydrothermal reaction kettle, carrying out a reaction, separating the obtained material, washing the separated material, and drying the washed material to obtain titanium dioxide nanosheets; and 2, uniformly dispersing the titanium dioxide nanosheets in an anhydrous ethanol solution of iron trichloride, carrying out magnetic stirring at normal temperature for 15 min, carrying out suction filtration separation to obtain a product, dispersing the product in an anhydrous ethanol solution of trimesic acid, carrying out a 50-80 DEG C water bath reaction for 20-50 min, carrying out suction filtration separation to obtain a product, and repeating above processes in step 2 2-50 times to obtain the titanium dioxide nanosheet supported MIL-100 (Fe) composite photocatalysis material. The catalyst prepared through the method is especially suitable for catalytic degradation of high-concentration organic dyes (such as methylene blue) under visible light irritation) to reach a very high degradation rate.

The invention relates to a synthetic method for a magnetic metal organic framework composite material coated by [Cu2(btc)2] on surfaces of ferroferric oxide microspheres and application of the composite material. The method comprises the following steps of: firstly synthesizing ferroferric oxide microspheres by a hydrothermal synthesis method; dispersing magnetic spheres in an ethanol liquid of mercaptoacetic acid, wherein hydroxyls are formed on the surface of the spheres; dispersing mercaptoacetic acid modified magnetic spheres to an ethanol liquid of copper acetate, reacting for 15 minutes at 70 DEG C, and then dispersing the product in an ethanol liquid of trimesic acid and reacting for 30 minutes at 70 DEG C; and performing alternate reaction of magnetic spheres with copper acetate and the ethanol liquid of trimesic acid to finally, obtain the magnetic metal organic framework composite material with a core-shell structure. The material has a metal organic framework shell layer and can be coordinated with peptide fragments with amino groups and carboxylic group so as to enrich low concentration peptide. Meanwhile, the enriching and separating process is fast, simple and convenient due to high paramagnetism of ferroferric oxide. The synthetic method is simple and low in cost, and can be used for enrichment and separation of low abundance peptide fragments less than 1nM and MALDI-TOFMS (Matrix-Assisted Laser Desorption Ionization-Time Of Flight Mass Spectrometer) detection.

The invention belongs to the field of super capacitors and particularly relates to a binary metal organic framework material applied to a super capacitor and a preparation method for the binary metal organic framework material. The binary metal organic framework material is formed of two types of metal ions and an organic ligand using a solvothermal method in a self assembly coordination manner. The two types of metal ions are Co-Ni, Co-Fe, Co-Mn, Ni-Mn or Ni-Cu. The organic ligand is trimesic acid, terephthalic acid, 2,6-naphthalene acid, 4,4'-biphenyl diacid or 2-methylimidazole. The binary metal organic framework material is advantaged by having multiple holes, large specific surface area and an adjustable structure, and being varied in structure. The cooperative effect between the two types of metal ions in the binary metal organic framework material (MOFs) is utilized, so that when the binary metal organic framework material is applied to the electrode material of a super capacitor, excellent cycling stability and high specific discharge capacity are achieved.

The invention belongs to the technical field of metal organic framework materials, and discloses a zinc and copper bi-metal organic framework material and a preparation method and application thereof. The preparation method comprises the steps that 1, soluble copper salt, soluble zinc salt and trimesic acid are added to mixed solvent of N,N'-dimethyl formamide, water and ethyl alcohol, even stirring and ultrasonic treatment are conducted, and reaction liquid is obtained; 2, the reaction liquid obtained in the first step is transferred into a polytef reaction kettle for a hydrothermal reaction, and a roughly prepared zinc and copper bi-metal organic framework material is obtained; 3, the material obtained in the second step is washed through the N,N'-dimethyl formamide firstly and then soaked through ethyl alcohol solvent, and the purified zinc and copper bi-metal organic framework material is obtained after activation is conducted. According to the zinc and copper bi-metal organic framework material, the framework structure of an original copper-based organic material is reserved; meanwhile, the prepared material is large in specific surface and developed in micro-pore structure and has higher adsorption capacity to low-concentration congo red dye molecules in water.

The invention discloses a method for directly synthesizing a mesoporous material coated heteropolyacid functionalized MOF material, and relates to a method for a mesoporous material coated polyacid modified metal organic framework material, wherein a mesoporous molecular sieve, phosphorus molybdenum heteropoly acid, tetramethylammonium hydroxide, 1,3,5-trimesic acid, and Cu(NO3)2.3H2O are adopted as raw materials, a hydrothermal synthesis method is adopted, and water is adopted as a solvent to carry out one step synthesis at a temperature of 90-230 DEG C to obtain the target material. The catalysis material synthesized by the method is applied in the benzene hydroxylation reaction, wherein the good stability performance of the material is presented under the mild reaction conditions.

The invention discloses a preparation method of a metal-organic framework material for adsorbing separation of carbon dioxide/ methane. The preparation method comprises the following steps of: (1) mixing 0.46-1.16mol/L cupric nitrate water solution and 0.23-0.58mol/L trimesic acid ethanol solution, fully stirring, then adding into a stainless steel reaction kettle provided with a polytetrafluoroethylene inner liner for sealing, and carrying out solvent thermal reaction while controlling the crystallization temperature to be 60-150 DEG C and the crystallization time at 12-24h; (2) opening the stainless steel reaction kettle, filtering, sequentially washing by methyl alcohol and deionized water, and drying at the temperature of 80-105 DEG C to obtain blue crystal; and (3) vacuumizing the blue crystal at the temperature of 150-200 DEG C to obtain the Cu-containing metal-organic framework material.

The invention belongs to the technical fields of material preparation and photocatalysis, and discloses a phenyl ring modified graphite-like carbon nitride photocatalyst, and a preparation method and an application thereof. The method comprises the following steps: 1, dissolving nitrogen-containing organic micro-molecules and a phenyl ring-containing compound in a solvent, and evaporating the obtained solution until the solution is dry in order to obtain a mixed precursor; and 2, roasting the mixed precursor to obtain the phenyl ring modified graphite-like carbon nitride photocatalyst, wherein the nitrogen-containing organic micro-molecules are one or more of urea and melamine; and the phenyl ring-containing compound is one or more of trimesic acid, phenol, benzoic acid and benzaldehyde. The electron structure of the photocatalyst is changed by phenyl ring modification, so the pi electron delocalization of graphite-like carbon nitride is excited, the absorption of visible lights is improved, compounding of photon-generated carriers is inhibited, and the photocatalytic hydrogen production performance is improved. The method has the advantages of simple preparation, no expensive device and good practical application prospect.

The invention relates to a double-metal MOF (Metal-Organic Framework) catalyst. Two inorganic metal centers and an organic ligand are self-assembled through a coordination bond to form a three-dimensional cage-shaped structure; the specific surface area is 170 to 1,145m<2>/g, the pore capacity is 0.18 to 0.48cm<3>/g and the average pore diameter is 1.34 to 3.55nm; any two types of nitrate of metalcopper, nickel, cobalt and cerium are used as metal precursors, one of trimesic acid, 2-methylimidazole or terephthalic acid is used as a synthesis ligand and a suitable solvent is selected to synthesize the double-metal MOF catalyst. A double-metal MOF material is used as a catalyst and p-diethylbenzene is used as a raw material; the p-diethylbenzene is catalytically oxidized in a fixed bed to prepare p-ethylacetophenone. The method provided by the invention has the advantages of mild reaction conditions, simplicity in operation, high p-diethylbenzene conversion rate and high p-ethylacetophenone selectivity; a product and the catalyst are easy to separate and the catalyst is stable in performance; reaction is applied to fixed bed reaction to realize continuous production, so that the method has a wide industrial application prospect.

The invention discloses a bicolor Eu-MOFs/CDs fluorescent material as well as preparation and an application thereof. Europium ions, trimesic acid and carbon quantum dots are used as raw materials, and the bicolor fluorescent material is prepared through heat treatment in a solvent prepared by mixing N,N-dimethylformamide, distilled water and cyclohexanol. Under irradiation of ultraviolet lamps, the material can emit red fluorescence when dispersed in organic solvents and can emit blue fluorescent when dispersed in water, so that fluorescent colorimetric sensors for measuring water content in organic solvents can be prepared from the material, the prepared sensors are high in sensitivity, good in stability and low in cost and have higher population value and brighter application prospect.

The invention provides a preparation method of a porous carbon nano rod with a high specific area. The preparation method comprises the following steps (1) weighing zinc salts and trimesic acid according to a ratio of amount of substance of 0.5-5:1, dissolving the zinc salts and trimesic acid in an organic solvent, fiercely stirring for 0.5-3 hours at a room temperature, then carrying out a solvent heat treatment for 1 to 4 days at a temperature of 80 to 160 DEG C, filtering, washing, carrying out solvent exchange, and drying the obtained solid in vacuum to obtain white powder, wherein the ratio of amount of substance of the organic solvent to zinc salts is 20-200:1; (2) rapidly heating the white powder obtained in the step (1) to a temperature of 910 DEG C or more at a speed of 2-20 DEG C/min in a nitrogen gas atmosphere, maintaining the temperature for 1 to 12 hours, cooling to the room temperature so as to obtain the porous carbon nano rod with a high specific surface area. The provided preparation method has the advantages of economic route, low cost, simple operation, and mild conditions. The target product has a high specific area and narrow pore size distribution, and has an amorphous carbon structure and a graphite carbon structure at the same time.

The invention discloses a cobalt-nickel alloy-porous carbon composite wave-absorbing material with an MOF structure. The wave-absorbing material has a porous nanometer sheet structure, wherein a cobalt-nickel alloy particle is embedded into the pore structure; and a graphitized carbon layer is wrapped outside the cobalt-nickel alloy particle. The invention also discloses a preparation method for the above-mentioned cobalt-nickel alloy-porous carbon composite wave-absorbing material. The preparation method comprises the following steps: adding cobalt nitrate, nickel nitrate and trimesic acid with addition amounts larger than required amounts into DMF, after reaction materials are completely dissolved, adding 4'4-dipyridyl with an addition amount larger than a required amount into an obtained mixed solution, carrying out dissolving under full stirring, and carrying out a solvothermal reaction; washing a product obtained by the reaction, and carrying out drying so as to obtain a precursorwith the MOF structure; and subjecting the precursor to calcination treatment so as to obtain the cobalt-nickel alloy-porous carbon composite wave-absorbing material. The preparation method providedby the invention has the advantages of low preparation cost and simple process; and the composite wave-absorbing material prepared by using the preparation method provided by the invention has excellent wave-absorbing performance and is applicable to large-scale industrial production.

The invention relates to a sponge composite metallic organic framework material for adsorption separation and belongs to the technical field of materials. According to the invention, a two-step in-situ growth method is adopted for loading MOFs (metallic organic framework material) into a duct in a sponge carrier. The MOFs is synthesized from following organic ligands and metal salts, wherein the organic ligands include pyrazine, trimesic acid, terephthalic acid, 2,5-dihydroxyterephthalic acid, and the metal salts include cupric fluosilicate, magnesium nitrate, zirconium chloride, cupric nitrate, chromic nitrate, ferric nitrate, aluminum nitrate and hydrates thereof. According to a preparation method provided by the invention, a large amount of MOFs loaded in the duct in the sponge carriercan be realized; MOFs load rate is high; load is stable; the defects of fragility and easiness in loss of MOFs powder can be overcome; a breakthrough experiment proves that the material provided by the invention has the characteristics of high CO2-absorbing capacity, high adsorption separation selectivity, stable adsorption separation property, and the like.

The invention belongs to the technical field of chemical compound preparation and in particular provides a novel metal organic framework structured compound and a preparation method thereof. The structural formula of the compound is [Zn4(mu4-O)(BTC)2(phen)2].4H2O, wherein mu4 is oxo-bridged; BTC is 1,3,5-trimesic acid (C9H6O6); phen is 1,10-o-phenanthroline (C12H8N2); the molecular formula of the compound is C42H30N4O17Zn4 and the molecular weight is 1124.18; the compound belongs to the monoclinic system and C2/c space group; the cell parameter beta is 92.353(3) degrees; the cell volume is shown in the specification, Z is 4 and Dc is 1.806g/cm3. In the method, the cheap and nontoxic zinc acetate or zinc chloride is used as the reactant and the organics trimesic acid and o-phenanthroline are used as the ligands to obtain the Zn-MOFs material. The compound has simple preparation process and equipment and high heat stability at the temperature of more than 450 DEG C and can be widely applied to fluorescent organism markers.

The invention discloses a preparation method of a hydrogen evolution electric catalyst based on a metal-organic framework compound. The method includes the following steps that 1, cupric acetate aquo-complex Cu (OAc) <2>H<2>O is dissolved in acetic acid for preparing a cupric acetate solution; 2, trimesic acid (H<3>BTC) particles are dissolved in absolute ethyl alcohol for preparing a trimesic acid solution; 3, the trimesic acid solution is transferred to and mixed with the cupric acetate solution; 4, the mixed solution is subjected to ultrasonic operation; 5, the mixed solution is placed in a centrifugal tube for centrifugal operation and activating treatment; 6, a centrifugal product obtained after activating treatment is placed in a drying oven for being dried; 7, after samples and organic solvent are mixed according to proportion, the Cu-MOF@Nafion hydrogen evolution catalyst is obtained. The obtained Cu-MOF@Nafion hydrogen evolution catalyst has unique physical properties of good transmission protons, good electrochemical stability is achieved, efficiency of a hydrogen evolution reaction can be improved, and the recycling service life can be greatly prolonged.

The invention belongs to a chemical synthesis method, and relates to a method for utilizing a hydrothermal synthesis technique to prepare a highly-dispersed solid-supported Keggin-type polymetallic acid oxide salt crystalline catalyst. The method mixes certain amount of Keggin-type heteropoly acid or heteropolyacid salt, trimesic acid, copper salt and various methyl ammonium salts in water, and then obtains a crystal of the solid-supported catalyst under the condition of hydrothermal authigenic pressure. Polyacid catalysts are dispersed in a microporous metal-organic frame in a unimolecular form. The method can accurately determine the composition, structure and supported amount of the catalyst, and the supported amount of the catalyst is up to over 45 percent. The catalyst of the invention has the advantages that the catalyst can not drain away, is high in thermal stability, resistant to acid and alkali, stable and insoluble in water and common organic solvents, such as various solvents such as alcohol, cyanide, ketone, chloroform, and is an ideal catalyst for realizing heterogeneous catalytic reaction.

The invention discloses a nitrogen-doped carbon-coated two-phase staggered distribution type nickel-cobalt bimetal selenide electrode material and a preparation method thereof, and belongs to the field of preparation of electrode materials for lithium ion batteries. The preparation method comprises the following steps of: using nickel nitrate and cobalt nitrate as a metal source, using trimesic acid as an organic ligand, preparing a nickel-cobalt bimetal organic framework compound by adopting a solvothermal method; and putting the obtained nickel-cobalt bimetal precursor and melamine commonlyinto a tube furnace at a temperature of 450 DEG C for calcination for 2h to complete the carbonization and nitrogen doping process so as to obtain a nitrogen-doped carbon-coated nickel-cobalt bimetalsimple substance; and using selenium powder as a selenium source to converting the nitrogen-doped carbon-coated nickel-cobalt bimetal simple substance after calcination to the nitrogen-doped carbon-coated two-phase staggered distribution type nickel-cobalt bimetal selenide electrode material. The nitrogen-doped carbon-coated two-phase staggered distribution type nickel-cobalt bimetal selenide electrode material and the preparation method thereof have the high specific capacitance, the excellent rate performance and the cycle stability.

The present invention provides a composite reverse osmosis membrane as a polyamide membrane including a side chain amino group such as a residue of a polyvinyl alcohol-based amine compound represented by Formula 1. Such a membrane can remove organic impurities under a low pressure, providing an economical method for removal of impurities. An aqueous solution including a polyvinyl alcohol-based amine compound having a side chain amino group represented by Formula 1 is applied on a polysulfone-based ultrafiltration membrane as a microporous support. Next, trimesic acid chloride solution is applied causing interfacial polycondensation, which generates a reverse osmosis membrane. When this composite reverse osmosis membrane is evaluated by using a pH 6.5 aqueous solution including 500 mg/l of sodium chloride at an operation pressure of 5 kg/cm² and at a temperature of 25° C., the permeable flux is at least 1.5 m³/m²·d, and the salt rejection is 80% or less.

wherein 0<a, 0≦b, 2<c, 1≦x≦5, 0≦y≦4; R¹ is at least one group selected from the group consisting of an ether group, an alkylene group and an ester group; and R² is at least one group selected from the group consisting of an alkyl group and a halogen group.

The invention discloses a preparation method of a perovskite quantum dot and metal-organic framework (MOF) composite luminescent material. The preparation method comprises the following steps: dropwise adding a lead nitrate solution into a trimesic acid solution to obtain Pb-MOF powder under the conditions of ultrasonic oscillation and stirring; dissolving cesium halide powder in methanol, and heating to obtain a cesium halide methanol solution; dispersing the Pb-MOF powder in toluene, and dropwise adding the cesium halide solution into the toluene dispersion of Pb-MOF to obtain the compositeluminescent material of CsPbX3@Pb-MOF under the condition of ultrasonic oscillation. According to the preparation method disclosed by the invention, the porosity of the Pb-MOF is utilized to nucleatea perovskite quantum dot in the mesopores of the Pb-MOF by an in-situ growth method under the condition of room temperature and ultrasonic oscillation, and the formed CsPbX3@Pb-MOF composite luminescent material improves the stability of the perovskite quantum dot and enhances the optical properties of the perovskite quantum dot.

The invention discloses a supported oxidized graphene/metal organic framework composite material and a preparation method thereof. The composite material comprises Pt-supported oxidized graphene and a copper-based metal organic framework, wherein the copper-based metal organic framework consists of copper ions and a bidentate ligand under a coordination bonding effect; the bidentate ligand is trimesic acid. The preparation method comprises the following steps: dissolving soluble copper salt and the trimesic acid in N,N'-dimethyl formamide, and adding ethanol and deionized water with stirring to obtain a mixed solution; adding the Pt-supported oxidized graphene into the formed mixed solution, uniformly stirring, and performing ultrasonic dispersion, so as to obtain a reaction solution; performing solvothermal reaction on the reaction solution under programmed temperature control, soaking, centrifuging and drying a product obtained from suction filtration, so as to obtain the supported oxidized graphene/metal organic framework composite material. The supported oxidized graphene/metal organic framework composite material has the high room temperature hydrogen storage capacity and the high experimental controllability and is simple in process and low in cost.

The invention discloses a multi-level N-doped carbon nano-rod composite material and a preparation method thereof. The preparation method comprises the specific steps of: (1), synthesizing a zinc-containing metal-organic framework (Zn(BTC)) precursor by taking zinc acetate dihydrate as the zinc source and trimesic acid as the organic ligand; (2), roasting at high temperature, so that a carbon nano-rod composite material loaded with ZnO is obtained; (3), performing in-situ growth of a metal-organic framework frame ZIF-8 on a carbon nano-rod by taking 2-methylimidazole as the organic ligand andthe ZnO in the material as the zinc source; and (4), carbonizing at high temperature in an inert environment, and performing acid pickling in diluted hydrochloric acid, so that an N-doped porous carbon nano-rod material derived by the two-level composite metal-organic framework is obtained. The composite material has better capacitive performance; and, in 6 mol/L of KOH electrolyte, when the current density is 1.25 A/g, the maximum of the specific capacitance is 163 F/g.

Disclosed is a production method of tin oxide and porous carbon composite lithium ion battery anode materials. The production method comprises the following steps of step 1, producing HKUST-1; step 2, activating HKUST-1, removing an organic solvent, adding a tin chloride solution by an injection method under the condition that the air is isolated and fully impregnating a pore passage, wherein the pore passage is occupied by the organic solvent; step 3, removing the solvent to obtain a precursor, performing 600 DEG C of firing of a muffle furnace under the protection of the argon gas, performing trimesic acid ligand carbonization, performing copper and tin reduction and alloying and obtaining a high dispersion of copper and tin alloy and carbon compound; step 4, selectively removing copper through nitric acid, converting tin oxide into tin dioxide to be stored in the pore passage in the form of nanocrystallization and obtaining the high performance composite materials. The tin oxide and porous carbon composite materials produced by the production method are firm in compositing, simple in operation and uniform in product; the tin oxide and porous carbon composite materials are large in capacity, high in current density, high in coulomb efficiency and high in rate performance current density when being applied to the lithium ion battery anode materials; the mass production can be achieved and the production cost is low.

The invention discloses a preparation method of a metal organic framework material film, wherein the preparation method comprises the following steps: mixing 1-1.5mM ethanol amine aqueous solution with a same volume of 2-5mM copper nitrate aqueous solution by stirring magnetically, carrying out sealed reaction to obtain a copper hydroxide nanowire solution; then mixing 30-60ml of the copper hydroxide nanowire solution with 1-2ml of gold nanoparticle modified by citric acid root, filtering through a filtering film, and then depositing on the filtering film to obtain a gold-copper hydroxide nanowire layer; finally mixing the gold-copper hydroxide nanowire layer with 10-20ml of 4-10mM trimesic acid/ethanol aqueous solution to react for 1-5 hours, thus obtaining the metal organic framework material film. The invention also discloses application of the metal organic framework material film prepared by the preparation method and application of the metal organic framework material film in gas separation. The metal organic framework material film is formed by stacking cubic crystals; an exposed crystal plane is a {100} family of crystal plane.

The invention belongs to the field of porous materials, and discloses a hierarchical pore HKUST-1 material, a preparation method and an appliance. The method for preparing the hierarchical pore HKUST-1 material comprises steps: trimesic acids and benzoic acids are dissolved in a mixed solution of three kinds of solvents of water, ethyl alcohol and dimethyl formamide (DMF), are uniformly stirred and mixed, and then are added with Cu(NO3)2.3H2O to uniformly stir and mix, thereby obtaining a mixed solution. The mixed solution is put into a stainless steel high pressure reaction kettle, has a hydro-thermal synthesis reaction in 100-120 DEG C, and reaction products are separated, washed and dried to obtain the hierarchical pore HKUST-1 material. The hierarchical pore HKUST-1 material uses benzoic acids as structure-directing agents, does not need other auxiliary reagents, has rich microporous, mesoporous and macroporous, and has excellent application prospect in bulky molecular catalysis, adsorption and separation and the like.