1059 results about "Terephthalic acid" patented technology

The recycled bis(4-hydroxybutyl) terephthalate according to one embodiment has a low amount of residual ethylene glycol derivatives and can therefore be used as a polymerization raw material for high crystallinity engineering polyester products or biodegradable polyesters, offering superior qualities, for example, color.

The invention discloses a high-solid-content MIL-101 (Fe) / PIM-1 mixed matrix membrane and a preparation method thereof, and belongs to the technical field of gas separation membranes. The preparation method comprises the following steps: firstly, dissolving an iron source in a PIM-1 polymer solution to form a homogeneous membrane casting solution; forming the obtained membrane casting solution, and removing the solvent to obtain a PIM-1 / Fe (II) composite substrate containing Fe (III); then, the substrate is alternately immersed in a terephthalic acid methanol solution and a ferric salt methanol solution, and MIL-101 (Fe) is generated in the polymer matrix through in-situ limited crystallization by layer-by-layer limited crystallization. According to the method, the problem of interfacial compatibility between the MOF filler and the polymer matrix is effectively solved, and high loading capacity (up to 52.9 wt.%) of MIL-101 (Fe) is realized without agglomeration. Meanwhile, the membrane has excellent COplasticizing resistance and long-term operation stability, and has a wide application prospect in the fields of carbon capture and the like.

The invention relates to the technical field of water pollutant removal, in particular to a UiO-66 / sodium carboxymethyl cellulose / polyvinyl alcohol / melamine sponge composite material and a preparation method and application thereof.The preparation method comprises the steps that zirconium chloride and terephthalic acid are dissolved in an organic solvent to obtain a mixed solution, the mixed solution is transferred into a reaction kettle, and through solvothermal reaction, the UiO-66 / sodium carboxymethyl cellulose / polyvinyl alcohol / melamine sponge composite material is obtained; the preparation method comprises the following steps: preparing UiO-66 powder; putting UiO-66 powder into the sodium carboxymethyl cellulose solution, and uniformly stirring the UiO-66 powder and the sodium carboxymethyl cellulose solution to obtain a UiO-66 / CMC mixed solution; placing the UiO-66 / CMC mixed solution in a polyvinyl alcohol solution, and uniformly stirring the UiO-66 / CMC / PVA mixed solution to obtain a UiO-66 / CMC / PVA mixed solution; the preparation method comprises the following steps: dipping a melamine sponge in a UiO-66 / CMC / PVA mixed solution to obtain an adsorption saturated melamine sponge; the UiO-66 / CMC / PVA / coated MS composite material is obtained by repeatedly freezing and thawing the adsorption saturated melamine sponge for multiple times and then freeze-drying, the composite material can be used for rapidly, efficiently and selectively removing phosphate or fluorine ions and the like in water and is convenient to separate and recycle, and a new thought is provided for development of efficient water treatment adsorbent materials.

The invention discloses environmentally degradable plastic as well as a preparation method and application thereof, and belongs to the technical field of degradable plastic. The degradable modified plastic is prepared from the following raw materials: polylactic acid, poly (butylene terephthalate)-adipate, modified thermoplastic starch, modified cellulose, poly (butylene succinate), epoxidized soybean oil, polyvinyl alcohol, glycerol monolaurate and ethylenediaminetetraacetic acid. Wherein the modified thermoplastic starch is obtained by thermoplastic modification of starch through a plasticizer and modification of castor oil and toluene diisocynate; the modified cellulose is obtained by modifying cellulose acetate with chitosan. By regulating and controlling the types and proportions of the raw materials for preparing the plastic, the plastic with excellent degradation performance and mechanical performance can be obtained, the shopping bag is prepared from the plastic, the loading capacity can be remarkably improved, the plastic is easily degraded by microorganisms in the environment after being discarded, and environmental pollution is avoided.

The invention discloses a method for efficiently depolymerizing polyethylene glycol terephthalate, which comprises the following steps: mixing a PET material, ethylene glycol and a core-shell type magnetic nano composite catalyst, and carrying out alcoholysis reaction at 160-200 DEG C for 30-180 minutes; after the reaction is finished, separating the catalyst from a reaction system through an external magnetic field to obtain a solution containing bis (2-hydroxyethyl) terephthalate; the core-shell type magnetic nano composite catalyst comprises a magnetic FeO core, a SiO shell layer and active metal sites, the FeO core is coated with the SiO shell layer, the SiO shell layer is an insulating inorganic layer and is of a porous structure, the active metal sites are fixed to the surface of the SiO shell layer through coordinate bonds, and active metal is selected from one or more of Co, Ni, Cu, Ce, La and Al. The problems that an existing PET alcoholysis catalyst is easy to dissolve out, difficult to separate, harsh in reaction condition and poor in cycling stability are solved.

The invention discloses a hydrofining method for optimizing the chromatic value of a bio-based terephthalic acid product, and belongs to the technical field of terephthalic acid hydrofining. The special refining process suitable for the bio-based CTA is formed by optimizing the whole process of pretreatment, hydrogenation reaction and post-treatment. The process not only solves the problem that the bio-based raw material has many impurities, but also realizes the balance of environmental protection and economy through the green solvent (water), the efficient catalyst (Pd / C) and controllable parameter design, provides a feasible path for the industrial production of bio-based PTA, and promotes the transformation of the polyester industry to sustainable development. The method provided by the invention is high in impurity removal rate, can efficiently purify the bio-based CTA to obtain a product meeting the PTA standard, is mild in reaction condition, realizes low-energy-consumption and high-stability operation under efficient catalysis, is small in process pollution, and reduces the environmental load.

A polymerization raw material obtained by the depolymerization of waste polyester is disclosed. The polymerization raw material contains recycled bis(2-hydroxyethyl) terephthalate in which the contents of acetate-based ester compounds and diethylene glycol ester compounds are adjusted to specific levels. The polymerization raw material is excellent in purity and quality, and free from the problem that thermal resistance characteristics deteriorate in the polymerization of a polymer from the recycled monomer.

The application belongs to the technical field of regenerated polyester, and particularly relates to a recycling method of waste polyester textiles, which comprises the following steps: decolorizing colored waste polyester textiles by using a decolorizing agent, wherein the decolorizing agent is one or more of dimethyl carbonate, diethyl carbonate and methyl ethyl carbonate; depolymerizing the decolorized polyester textiles by using a depolymerizing agent to obtain terephthalate, wherein the depolymerization rate of the decolorized polyester textiles is 98.0-100%; converting the terephthalate into DMT first, and then performing a re-polymerization reaction on the DMT, ethylene glycol, a catalyst and a functional additive to obtain regenerated PET. The application adopts a process of decolorizing first and then depolymerizing, and the decolorizing and depolymerizing are coordinated, so that the process is simplified, the energy consumption and pollution are reduced, and the economy and sustainability of the recycling of waste polyester textiles are improved.

The invention discloses a moisture absorption and sweat releasing polyester fiber and a preparation method and application thereof, and relates to the field of polyester fibers. The moisture absorption and sweat releasing polyester fiber is prepared from the following raw materials in parts by weight: 85 to 95 parts of fiber-grade PET polyester, 4 to 12 parts of PET copolymer, 0.5 to 2.0 parts of dispersing agent and 0.1 to 0.5 part of antioxidant, wherein the PET copolymer is prepared from the following raw materials: terephthalic acid, ethylene glycol, neopentyl glycol, a catalyst and polyethylene glycol. On the basis of terephthalic acid and ethylene glycol, neopentyl glycol and polyethylene glycol are further added, the formed PET copolymer serves as a moisture absorption and sweat releasing modifier and is subjected to melt blending and spinning with fiber-grade PET polyester, hydrophilic groups and a fiber structure are fused into a whole, the moisture absorption and sweat releasing performance of the prepared polyester fiber is improved, and the moisture absorption and sweat releasing effects of the polyester fiber are improved. The durability of the moisture absorption and sweat releasing performance is also ensured.

A sunscreen formulation includes carbon quantum dots having reacted units of citric acid and thiamine and particles of a metal-organic framework including zinc and reacted units of terephthalic acid. The sunscreen formulation further comprises a liquid carrier and a stabilizer. The quantum dots are dispersed in the metal-organic framework. The particles of the metal-organic framework are dispersed in the liquid carrier.

The present invention relates to a dental diaphragm copolyester and a preparation method thereof, the preparation method comprises the following steps: 2, 5-furandicarboxylic acid or an ester thereof, aliphatic or alicyclic diol and (2-hydroxy-5-formyl phenyl) diphenylborane are subjected to a reaction to obtain an esterification or ester exchange product; and carrying out condensation polymerization on the esterification or ester exchange product and the stabilizer to prepare the copolyester for the dental diaphragm. 2, 5-furandicarboxylic acid is derived from a renewable biomass resource and meets the requirements of green and sustainable development; compared with terephthalic acid and furan ring structures, the film has higher rigidity and polarity, the yield of hot press molding is improved, the same correction force can be met by a thinner film, the wearing comfort of a patient is improved, and meanwhile stress relaxation is improved; the catalyst perfectly combines strong Lewis acidity, intramolecular stabilization and potential bifunctional activation through structural design, provides possibility for efficient and green synthesis of polyester, avoids use of heavy metal, and is higher in biological safety.

The invention discloses a waterproof bag film material and a preparation method thereof, relates to the technical field of polybutylene terephthalate polymer materials, and belongs to the patent classification number C08L67 / 02. The method comprises the following steps: sequentially carrying out silane coupling agent modification and solid-phase free radical polymerization on activated gas-phase nano silicon dioxide to construct a core-shell structure nano reinforced filler with rich epoxy groups on the surface; carrying out melt blending extrusion on the mixture, PBT (Polybutylene Terephthalate) resin, a chain extender, an end-capping reagent and the like to obtain hydrolysis-resistant modified granules; a PBT base film is prepared through casting, two-way stretching and heat setting; the preparation method comprises the following steps: performing ultraviolet ozone activation on a base film, coating a super-hydrophobic coating solution prepared from aminated nano silicon dioxide, epoxy-terminated polydimethylsiloxane, a cross-linking agent and an accelerant, and heating and curing to finally obtain the high-strength high-waterproof PBT waterproof bag film. The prepared film has excellent mechanical strength, body hydrolysis resistance and super-hydrophobic surface, the water contact angle is high, the coating adhesive force is high, and the waterproof performance is lasting and stable under high-frequency bending.

The invention relates to the technical field of polyester degradable plastics, and discloses a biodegradable shrink film as well as a preparation method and application thereof. The preparation method of the biodegradable shrink film comprises the following steps: reacting (R)-3-hydroxybutyric acid with 1, 4-dibromobutane to obtain a dihydric alcohol monomer; the preparation method comprises the following steps: copolymerizing a dihydric alcohol monomer and L-lactide to obtain modified polylactic acid; carrying out copolymerization on the geraniol-based compound and L-lactide to obtain a bio-based plasticizer; modifying the bio-based plasticizer with allyl trimethyl ammonium chloride to obtain a modified bio-based plasticizer; the biodegradable shrink film is prepared by taking modified polylactic acid, poly (butylene adipate-co-terephthalate), a modified bio-based plasticizer, a functional filler and palm wax as raw materials. The biodegradable shrink film has the advantages of flexibility, shrinkage performance, lasting antibacterial performance and good barrier performance, and can be used in food packaging materials.

The invention belongs to the technical field of electro-catalysis water decomposition, and relates to a self-supporting W-NiCoP / NF composite material and a preparation method and application thereof. Cobalt salt, terephthalic acid, acetic acid and foamed nickel are subjected to a first solvothermal reaction, and defect type Co-MOF / NF is obtained; immersing the defect type Co-MOF / NF into a tungstate solution, and then carrying out a second solvothermal reaction to obtain a defect type W-Co-MOF / NF precursor; and carrying out phosphating heat treatment on the defect type W-Co-MOF / NF precursor and a phosphorus source in an inert atmosphere to obtain the W-Co-MOF / NF composite material. According to the preparation method disclosed by the invention, the tungsten-doped nickel-cobalt bimetallic phosphide with rich defect structures is successfully constructed on the foamed nickel substrate through a step-by-step solvothermal and gas-phase phosphating strategy, so that organic combination of a bimetallic synergistic effect and defect engineering is realized; the prepared self-supporting composite material has more active sites, a better electronic structure regulation effect and better stability.

The invention discloses a modified polylactic acid fiber and a preparation method thereof. The preparation method comprises the following steps: providing polybasic hydroxyl-terminated D-polylactic acid; the method comprises the following steps: respectively providing betaine-grafted D-polylactic acid and a poly (butylene adipate terephthalate)-epoxy-polyether co-modified organic silicon-D-polylactic acid copolymer by taking the multi-hydroxyl-terminated D-polylactic acid as a main raw material, wherein the poly (butylene adipate terephthalate)-epoxy-polyether co-modified organic silicon-D-polylactic acid copolymer; and carrying out Haake blending and melt spinning on the betaine-grafted D-polylactic acid, a poly (butylene adipate-co-modified organosilicon-D-polylactic acid) copolymer, L-polylactic acid, an antioxidant and an anti-hydrolysis agent, so as to obtain the modified polylactic acid fiber. The preparation method comprises the following steps: carrying out Haake blending and melt spinning on the betaine-grafted D-polylactic acid, poly (butylene adipate-co-modified organosilicon-D-polylactic acid copolymer, L-polylactic acid, the antioxidant and the anti-hydrolysis agent. The modified polylactic acid fiber prepared by the method has the characteristics of easy decontamination, hydrophilicity, high temperature resistance and high toughness, and can effectively avoid water washing shedding, and the comprehensive performance is obviously improved.

The invention discloses a method for recovering monohydroxyethyl terephthalate from a polyester textile, which comprises the following steps: carrying out multi-stage decolorizing treatment on the polyester textile to be recovered by using ethylene glycol as a decolorizing agent to obtain the decolorized polyester textile; mixing a depolymerization catalyst, a sodium phosphate buffer solution and the decolored polyester textile, and carrying out a depolymerization reaction to obtain a depolymerization solution; adding ethyl acetate into the depolymerization liquid for extraction, rotary evaporation concentration and sublimation treatment to obtain monohydroxyethyl terephthalate. According to the method for recycling the monohydroxyethyl terephthalate from the polyester textile, the decolorization rate of the polyester textile can reach 90% or above, the purity of the recycled monohydroxyethyl terephthalate is larger than 98%, and the whiteness of the recycled monohydroxyethyl terephthalate is larger than 97%. The method for recycling the monohydroxyethyl terephthalate from the polyester textile, provided by the invention, is an efficient, economical and green new method for recycling the polyester, and the recycling of the polyester textile is realized.

The invention discloses a preparation method of a CuO-coated N-C electroreduction CO2 catalyst with a multilayer square structure. The method comprises the following steps: dissolving a Cu (NO3) 2 solid in an N, N-dimethylformamide solvent to obtain a solution A, adding terephthalic acid, polyvinylpyrrolidone K10-14 and dodecanoic acid into a reaction kettle, transferring the solution A into the reaction kettle, and adding absolute ethyl alcohol; and heating the reaction kettle in a drying oven, after the reaction is finished, centrifugally collecting a product, and cleaning and drying to obtain the Cu-BDC precursor with a multi-layer square structure. The Cu-BDC precursor is placed in a muffle furnace to be calcined, and the CuO-coated N-C electroreduction CO2 catalyst of a multi-layer square structure can be obtained. According to the method, nanoscale CuO particles can grow on the surface of the Cu-BDC precursor on the basis of retaining the multi-layer square structure of the Cu-BDC precursor, so that CuO plays a catalytic role as much as possible, and the electro-catalytic property of CuO-N-C is improved.

This invention relates to the field of yarn technology, specifically disclosing a superconducting wet-drying yarn, its preparation method, and its application. The yarn is prepared by blending high-shrinkage polyester fibers and cotton fibers. The preparation of the high-shrinkage polyester fibers includes two parts: raw material synthesis and fiber forming. Terephthalic acid and ethylene glycol are used as raw materials. After the esterification reaction, polyethylene glycol and aromatic dicarboxylic acid ester sulfonate are added, resulting in high-shrinkage polyester chips. These chips are then used as raw materials for spinning to obtain high-shrinkage polyester fibers. Through the two-component design of the yarn, a micro-circulation diffusion system with superconducting moisture absorption and sweat-wicking effect is formed, effectively improving the hygroscopicity of the polyester fibers. Even after multiple washes, it still possesses excellent superconducting wet-drying properties, long-lasting efficacy, and good wash resistance, without causing uneven dyeing or unidirectional moisture wicking problems.

The invention provides a solid acid catalyst and application thereof in esterification reaction of polyethoxy dihydric alcohol and acrylic acid, and relates to the technical field of preparation of polyethylene glycol diacrylate. The solid acid catalyst is a UIO-66-SO3H catalyst based on a UIO-66 framework, the catalyst is prepared from ZrCl4, formic acid, terephthalic acid and 2-sulfonic acid terephthalic acid through a reaction, the catalyst can catalyze an esterification reaction of polyethyoxyl dihydric alcohol and acrylic acid under the solvent-free condition, a subsequent desolventizing step is avoided, energy consumption is reduced, and the method is suitable for industrial production. And the prepared polyethoxy glycol diacrylate product is colorless and transparent in color, high in purity, low in polymerization degree, moderate in viscosity and wider in application space.

The invention discloses an antibacterial antifouling agent as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out chemical grafting on an amino terephthalic acid compound by adopting benzisothiazolinone to prepare a functional ligand; and carrying out a reaction on a metal salt and the functional ligand to prepare the antibacterial antifouling agent. The antibacterial antifouling agent disclosed by the invention shows broad-spectrum antibacterial activity on gram-negative bacteria and gram-positive bacteria, and has anti-algae performance and good biocompatibility; meanwhile, the antibacterial and antifouling agent is compounded into water-based acrylic resin, the obtained coating still has excellent antibacterial and anti-algae performance, the ligand engineering strategy effectively breaks through the bottleneck that traditional MOFs ligands are insufficient in antibacterial activity, and an innovative path is provided for developing long-acting, synergistic and practical MOF-based antibacterial and antifouling materials.

The invention relates to a PPTA (poly-p-phenylene terephthalamide) resin and preparation and application thereof, through segmented design of a polymerization process of the PPTA, paraphthaloyl chloride is partially replaced by a low-cost monomer terephthalic acid, so that the molecular weight distribution of the prepared PPTA resin is macroscopically controllable, and the PPTA resin has the advantages that the molecular weight distribution is controllable; compared with the original polymerization process, the production cost is greatly reduced, the reaction process is stable and easy to control, and industrial production is facilitated.

The invention provides a chemical or enzymic method regenerated PET and PTA screening method, which comprises the following steps: pretreating a PET or PTA sample 1, and measuring the content of p-toluic acid, the content of p-carboxybenzaldehyde and the content of m-terephthalic acid by using high performance liquid chromatography; the method comprises the following steps: pretreating a PET or PTA sample 2, pretreating by using a high-temperature pyrolysis method, and measuring an isotope ratio of oxygen-18 to oxygen-16 by using an isotope ratio mass spectrometer; the method comprises the following steps: calculating a cleanliness index, an oxy-18 index and a bottle flake index by using a formula based on a test result, and classifying PET and PTA samples through a decision tree according to the indexes; combining and mixing the PET and PTA products based on the classification result and the requirements of downstream customers on the regeneration method and the regenerated material content; the method is convenient, accurate and reliable, the classification result is objective, the screening efficiency of PET and PTA regenerated by a chemical or enzyme method can be improved, and the economic cost is saved.

The invention provides a bio-based crude terephthalic acid hydrofining method, and belongs to the technical field of terephthalic acid hydrofining. The method comprises the following steps: carrying out recrystallization pretreatment on bio-based crude terephthalic acid, mixing the pretreated bio-based crude terephthalic acid with a solvent, adding a catalyst, carrying out a hydrofining reaction, replacing the solvent after the reaction is finished, carrying out recrystallization treatment on a hydrofined product, washing with water, and drying to obtain refined terephthalic acid, the method disclosed by the invention has the advantages of high impurity removal rate, mild reaction conditions and small process pollution, the refining of the bio-based crude terephthalic acid is realized, the obtained terephthalic acid can meet the requirements of an existing industrial method, and the concentration of impurities p-carboxybenzaldehyde is less than or equal to 25ppm and the concentration of methyl benzoic acid is less than or equal to 180ppm.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. The waste plastic can be liquified before being introduced to downstream processing. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

The invention particularly relates to a phosphotungstic acid / amino-functionalized UiO-66 bifunctional catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving zircon salt, terephthalic acid and 2-aminoterephthalic acid in an organic solvent; adding a regulator acetic acid, and activating to prepare amino-functionalized UiO-66; and slowly dropwise adding a phosphotungstic acid acetonitrile solution into the amino-functionalized UiO-66 acetonitrile dispersion liquid, stirring and reacting at room temperature, and separating and drying to obtain the catalyst HPW at amino-functionalized UiO-66. The bifunctional catalyst (phosphotungstic acid / amino-functionalized UiO-66) is coordinated through an acid-base site at a lower temperature (170 DEG C vsgt; according to the present invention, the reaction is performed at the temperature of 200 DEG C, the formation of carbon deposition can be substantially inhibited at the low temperature, and the catalyst has characteristics of high catalytic activity after five cycles, extraordinary hydrothermal stability and chemical stability, can maintain the stability of the catalyst in the reaction environment with the existence of a small amount of water, and has good and broad application prospects.

The invention belongs to the technical field of compositions for treating wells, and particularly relates to a sulfur dissolving agent for a sulfur-containing gas well. The sulfur dissolving agent consists of the following components in percentage by mass: 30-35% of sodium hydroxide, 2-3% of a dispersion penetrant, 3-6% of a physical sulfur dissolving agent, 2-5% of a catalyst and the balance of water, and the physical sulfur dissolving agent is selected from two or more of polypropylene imine, N-methyl pyrrolidone, triethylene tetramine, diethylenetriamine and methylbenzene. The catalyst is selected from one or more of ethylene glycol, terephthalic acid and sodium p-toluenesulfonate. According to the sulfur dissolving agent, physical sulfur dissolving agents are compounded, on the basis of the polarity similar dissolvability principle and the synergistic effect of the compounded physical sulfur dissolving agents, sulfur can be dissolved in the sulfur dissolving agent more easily, the starting temperature of sulfur dissolving is reduced by introducing a catalyst, and the dissolving performance of the sulfur dissolving agent to sulfur at the normal temperature is improved; and moreover, the heating process can be reduced, the construction cost is saved, and the method can be widely used for removing sulfur deposition blockage of a high-sulfur-content gas well shaft, a ground pipeline, a valve, a screen and the like.

The invention relates to a low-alignment-angle high-heat-resistance release film base film for a polaroid and a preparation method thereof, and the release film base film is prepared by taking an optical-grade PET slice as a main body material, adding modified PET and modified SiO2 filler with a specific structure, and carrying out co-extrusion casting and a unique three-section stretching process. According to the modified PET, a 2-(pyridine-3-yl) terephthalic acid comonomer and ionic liquid intercalated montmorillonite are introduced, so that the rigidity and heat resistance of a molecular chain are improved, and a heterogeneous nucleation point is provided; the surface of the modified SiO2 filler is grafted with a terpolymer, so that good compatibility with a matrix and internal lubrication are realized; according to the preparation method, a transverse-longitudinal-transverse three-section stretching sequence and step-by-step increasing temperature control are adopted to cooperatively regulate and control orientation and crystallization of molecular chains; and finally, the optical-grade polyester film with low alignment angle, low transverse thermal shrinkage rate and high surface adhesion is prepared, and is particularly suitable for being used as a release film of a high-end polaroid.

The invention relates to the technical field of bio-based degradable high polymer materials, in particular to a bio-based degradable pearl wool microcellular foaming material. The composite material is prepared from the following components in parts by mass: 70-85 parts of a bio-based polyester resin composite system of polylactic acid and poly (terephthalic acid)-butylene adipate (in a mass ratio of 60: 40-75: 25), 10-20 parts of bagasse microfibers modified by a silane coupling agent, 1.5-4 parts of a composite nucleating agent of flaky talcum powder and spherical nano calcium carbonate (in a mass ratio of 1.5: 1-2.5: 1), the bio-based plasticizer is prepared by compounding epoxidized soybean oil and tributyl citrate, the montmorillonite degradation accelerant is loaded with iron and cobalt ions (the molar ratio is 3: 1-5: 1), and the mixed foaming agent is prepared from 5-12 parts of supercritical carbon dioxide and nitrogen (the volume ratio is 60%-85%). A bio-based polyester composite system of polylactic acid and PBAT is adopted, silane modified bagasse microfibers are matched, montmorillonite loaded with iron and cobalt ions serves as a degradation accelerant, a bio-based plasticizer and the like are combined, and the composite material is prepared through a twin-screw extrusion melt blending and supercritical fluid foaming technology.

The application provides an In-MOF crystal material and a preparation method and application thereof, and the molecular formula of the In-MOF crystal material is [In(phen)(BDC) 1.5 ]·H2O, wherein phen is 1,10-phenanthroline, and BDC is terephthalic acid ligand; the crystal belongs to a monoclinic crystal system P2 1 / n with a space group, and the cell parameters are alpha=90°, beta=97.774(2)°, gamma=90°, a=12.3359(3)Å, b=14.1993(4)Å, c=15.4995(4)Å, the cell volume is 2689.96(12)Å 3 , and Z=4. The application synthesizes an In-MOF crystal material by using a simple room temperature solvent evaporation method, and the In-MOF crystal material can be used as a catalyst for electrocatalytic carbon dioxide reduction, and realizes efficient carbon dioxide reduction to form formic acid.

The invention provides a preparation method of a Mo-doped FeSe2 electrode material and application of the Mo-doped FeSe2 electrode material as a sodium-ion battery anode, and the preparation method comprises the following steps: mixing FeCl3. 6H2O, terephthalic acid and N, N-dimethylformamide, loading into a reaction kettle, and heating at high temperature to obtain an MIL-88B metal organic framework precursor; and then dispersing the MIL-88B precursor, sodium molybdate, selenium powder and hydrazine hydrate in a solvent, and doping Mo atoms into a FeSe2 electrode material through hydrothermal synthesis to obtain the Mo-FeSe2 sodium ion battery anode. According to the preparation method, Mo atoms are doped into FeSe2, so that the strength of Fe-Se bonds is enhanced, the structure collapse effect of the electrode material is effectively relieved from the structure level, an SEI film on an electrode liquid interface is compact and uniform, and the multiplying power and the cycle service life of the electrode material are effectively improved.