200 results about "Heteropoly acid" patented technology

The application discloses a preparation method and application of PTFE catalytic filter material, and the preparation of the PTFE catalytic filter material comprises MnCeTi catalyst preparation, PTFE catalytic fiber preparation, heteropoly acid functionalization and needling. The three-dimensional flower-shaped spherical structure of the prepared PTFE catalytic filter material is used to optimize the mass transfer and conversion channel of pollutants, the intermetallic interaction of Mn, Ce and Ti is used to regulate the surface acid sites and active sites of the catalyst, the surface oxygen vacancies, acid sites and other characteristics are further optimized through the heteropoly acid functionalization, and the low-temperature catalytic dioxin performance of the PTFE catalytic filter material is effectively improved. Meanwhile, the heteropoly acid can form polyoxometalate on the surface of the catalyst, the adhesion strength of the catalyst and the filter material is strengthened, the loss problem of the catalyst in the use process is effectively relieved, and the prepared PTFE catalytic filter material has high efficiency and long-term use performance.

The invention relates to the technical field of gas adsorption materials, in particular to a heteropoly acid modified GO-coated MMT composite material and a preparation method and application thereof. The preparation method comprises the following steps: ultrasonically dispersing graphite oxide in deionized water, stirring for 2-4 hours to obtain a graphite oxide solution, adding methylcyclopentadienyl manganese tricarbonyl into ethylene glycol, and stirring for 12-24 hours to obtain an MMT solution; pouring the graphite oxide solution into the MMT solution, reacting at 150-180 DEG C for 8-12 hours, washing, and freeze-drying to obtain GO-coated MMT composite hydrogel; and adding the GO-coated MMT composite hydrogel into deionized water, then adding heteropoly acid, stirring at 60-80 DEG C for 8-12 hours, and carrying out suction filtration and washing to obtain the heteropoly acid modified GO-coated MMT composite material. According to the heteropolyacid modified GO (at) MMT composite material disclosed by the invention, a complex with strong electrostatic adsorption force can be formed on the surface of GO (at) MMT by introducing heteropolyacid, and meanwhile, Bronsted acid sites and Lewis acid sites are increased, so that the adsorption performance is enhanced, and low-concentration ammonia gas adsorption is realized.

The invention provides a preparation method of sclareolide and a catalyst, and belongs to the technical field of organic catalysis. The method comprises the following steps: dissolving sclareol by using a first solvent, adding a catalyst, adjusting the pH value of the solution under microwave conditions, dropwise adding hydrogen peroxide, heating and stirring for reaction, separating the catalyst, reusing, extracting the product by using a second solvent, and heating and refluxing to obtain sclareolide; the catalyst is imidazolyl ionic liquid / polyethylene glycol / maleic acid modified graphene oxide loaded with vacancy heteropolyacid salt. According to the preparation method of sclareolide, microwave-assisted reaction is adopted, so that the product yield of sclareolide is greatly improved. According to the invention, two mutually compatible reaction systems of alcohol and water are adopted, so that the environmental protection property of the process is greatly improved, and meanwhile, under the action of the catalyst, the method has a phase catalytic transfer effect, the reaction efficiency is improved, the reaction condition is mild, the product yield is high, and the method has a wide application prospect.

This invention provides a bamboo-like carbon nanotube with a heterostructure, its preparation method, and its applications. The preparation method includes: dissolving cobalt nitrate and heteropolyacid in ethanol to obtain a first solution; dissolving dicyandiamide in a mixed solution of ethanol and water to obtain a second solution; mixing phytic acid with the second solution uniformly and performing a polymerization reaction to obtain a third solution; adding the first solution to the third solution to perform a chemically induced self-assembly reaction, washing and drying to obtain a dicyandiamide-heteropolyacid-phytic acid-cobalt ion organic polymer; and calcining to obtain the bamboo-like carbon nanotube with a heterostructure. This method is simple and inexpensive; the Co2P and WN / MoN nanoparticles in the bamboo-like carbon nanotube are uniformly distributed in the carbon matrix, improving the electrochemical performance of the material; the introduction of dicyandiamide and phytic acid enables nitrogen and phosphorus doping of the carbon framework, improving the conductivity of the carbon support; and the resulting product exhibits high capacity and excellent cycle stability as a cathode material for metal-air batteries.

The invention provides a positive pole piece, a preparation method and application thereof and a lithium ion battery. The positive pole piece comprises a current collector, and a transition layer and an active material layer which are sequentially arranged on the surface of the current collector, wherein the transition layer comprises a carrier layer, a reduction state heteropolyacid layer and an aluminum layer which are sequentially stacked, and the carrier layer is located between the current collector and the reduction state heteropolyacid layer; raw materials of the active material layer comprise a positive electrode active material and a lithium supplement agent. The reduction-state heteropolyacid reacts with oxygen free radicals released in the lithium removal process of the lithium supplement agent, generation of side reaction gas is remarkably inhibited, and the reduction-state heteropolyacid has multi-electron oxidation-reduction capacity and can participate in the charge-discharge process, so that the electrochemical performance of the positive pole piece is further improved.

This invention relates to the field of polymer materials technology, specifically disclosing the application of low melt flow index (MFI) polyoxymethylene (POM) in improving the spinning performance of POM. Using heteropolyacids as catalysts, and controlling the polymerization temperature and the amount of heteropolyacid catalyst added, low MFI POM with a melt flow index of 0.1 g / 10 min to 2.5 g / 10 min was prepared. After compounding this low MFI POM with a heat-stabilizing agent in a certain proportion, it was blended with general-purpose POM and extruded into granules. Unexpectedly, the thermal stability of the POM was significantly improved, and it also exhibited moderate rheological properties. When applied to the melt spinning process, the spinnability of the POM was significantly improved. Compared with the POM without the addition of this low MFI, the draw ratio increased by approximately 1.4 times, and the tensile strength of the POM fiber reached 6–8 g / d, a maximum increase of approximately 1.4 times. The yield and strength of the finished fiber product were significantly improved.

The invention belongs to the technical field of catalysts, and discloses a nanorod-like Keggin type heteropolyacid catalyst and a preparation method and application thereof, the nanorod-like Keggin type heteropolyacid catalyst has a double rod-like structure, and the double rod-like structure is a rod-like structure with the length of 50-150 nm and a rod-like structure with the length of 3-10 [mu] m. The heteropolyacid catalyst has the characteristics of large specific surface area, double rodlike structure and the like, and the reaction performance of the catalyst for preparing methacrylic acid by oxidizing methylacrolein can be optimized.

This application belongs to the field of display technology and relates to an ink comprising quantum dots and a solvent, and further comprising one or more of additives and modifiers; wherein the additive is a blocked isocyanate, and the modifier is a heteropolyacid salt. This application also relates to a thin film and a light-emitting device. The technical solution provided by this application can improve the uniformity of film formation by doping the ink with additives.

The application discloses the technical field of waste gas purification catalyst regeneration, and discloses a regeneration process of a low-temperature SCR denitration catalyst; the process comprises the following steps: after the deactivated catalyst is cleaned through ultrasonic cleaning, the deactivated catalyst is sequentially immersed in a chemical activation liquid and an oxidation treatment liquid for activation and oxidation treatment, then the deactivated catalyst is immersed in a water dispersion liquid containing tungsten-silicon heteropoly acid-zirconium titanium composite oxide core-shell structure material and polyvinylpyrrolidone, vacuum-assisted impregnation, drying and gradient temperature heat treatment are carried out, and a regenerated catalyst is obtained. The core-shell structure material is prepared by the following steps: synthesizing a titanium zirconium composite oxide carrier through a sol-gel method, loading cerium manganese active components through a coprecipitation method, modifying silicotungstic acid through a layer-by-layer self-assembly technology and surface silanization modification. The regenerated catalyst has the advantages of significant improvement in sulfur resistance and alkali metal poisoning resistance, simple process operation, low energy consumption and suitability for industrial application.

POM particles are suitable as photocatalytic or electrocatalytic catalyst in the production of hydrogen and a method of producing such POM particles. The POM particles are produced by subjecting a heteropoly acid with the chemical formula HzXY12O40, or a hydrate thereof, to acidic conditions in the presence of a polyvalent cation, wherein z=3 or 4, X is selected from the group consisting of P, Si, Ge, As, Sb and V, and Y is selected from the group consisting of W, Mo and V.

The invention relates to a preparation method of a catalyst for preparing 1-hexyl methyl acetate by addition of n-heptene and acetic acid, which comprises the following steps: impregnating a carrier sulfonic acid group strong acid resin into a heteropoly acid solution, stirring at 20-50 DEG C for 8-24 hours, and controlling the mass ratio of the sulfonic acid group strong acid resin to the heteropoly acid solution to be (10: 1)-(1: 3); and after stirring, filtering, and drying a solid obtained after filtering at 80-140 DEG C to obtain a finished product. The invention also provides a synthetic method for synthesizing 1-hexyl methyl acetate by using the catalyst. The supported solid acid catalyst can be recycled from reaction slurry through simple liquid-solid separation means such as filtration and centrifugation, and good product selectivity can be obtained.

The invention discloses a high-performance polyolefin diaphragm as well as a preparation method and application thereof, and the preparation method comprises the following steps: A, cleaning a polyolefin diaphragm, and then carrying out surface treatment on the diaphragm by adopting plasma surface treatment equipment; b, selecting heteropoly acid, a metal source and an organic ligand with high ion conduction capability, preparing an in-situ growth precursor solution with a mixed solvent, soaking the diaphragm subjected to plasma surface treatment in the precursor solution, and carrying out hydrothermal reaction; and C, cleaning the diaphragm after the hydrothermal reaction with a solvent and absolute ethyl alcohol in sequence, and then taking out the diaphragm for vacuum drying. The high-performance ion conduction coating is constructed through an in-situ growth process by combining the synergistic effect of plasma surface activation and the supported heteropolyacid / metal organic framework. Meanwhile, the ionic conductivity, the thermal stability and the cycling stability of the polyolefin diaphragm are improved, the technological process is simplified, and high production efficiency and product consistency are achieved.

The invention provides a metal-heteropolyacid catalyst confined to a molecular sieve as well as a preparation method and hydrodeoxygenation application of the metal-heteropolyacid catalyst. The catalyst takes a spherical pure silicon molecular sieve with the particle size of 2-3mm as a carrier, and transition metal and heteropoly acid active components are supported in a pore channel in a limited range; the mass ratio of the heteropoly acid to the metal is (10-50): 1. According to the invention, an organic amine bridging strategy is adopted to construct near double active sites, that is, organic amine molecules in heteropolyacid organic amine salt are used as a guiding anchoring agent, and a transition metal precursor is accurately anchored near heteropolyacid. After roasting, a concerted catalysis center in which a metal hydrogenation site and a heteropolyacid deoxidation site are closely close on the nanoscale is successfully constructed in a confinement space of the molecular sieve, and the mass transfer efficiency and the step coupling effect in a hydrodeoxygenation multi-step cascade reaction are improved. When the weight hourly space velocity is 2 g / gcat. / h, the temperature is 150-250 DEG C and the pressure is 0.5-2 MPa, the conversion rate of the oxygen-enriched phenolic compound can be greater than or equal to 94%, and the yield of cycloalkane can be greater than or equal to 90%.

The application discloses a polyacid zeolite imidazolate framework loaded monatomic catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. The preparation method of the catalyst is as follows: (1) preparing a zeolite imidazolate framework material; (2) mixing the dried zeolite imidazolate framework material and a metal salt in a solvent and stirring; then adding a heteropoly acid, controlling the pH in the system to be 5-7, and performing a solvothermal reaction under the condition of 80-120 DEG C; after the reaction is completed, cooling and centrifugal separation are performed to obtain a precipitate; and (3) performing calcination treatment on the precipitate to obtain the polyacid zeolite imidazolate framework loaded monatomic catalyst. The polyacid zeolite imidazolate framework loaded monatomic catalyst prepared by the method has high catalytic activity, high selectivity and good cycle stability, and has a good application prospect in acetyl propionate esterification reaction.

The application discloses a kind of carolic acid and preparation method thereof, and specifically relates to the field of medical technology.The method comprises the following steps: stirring catalyst H2WO4 / C with hydrogen peroxide, then adding dichloro chrysanthemic acid ethyl ester; oil bath heating is carried out, reaction temperature is controlled, repeated reflux is carried out, and oxidation reaction is carried out; after the reaction, homogeneous transparent solution is filtered, extracted, and subjected to reduced pressure distillation to obtain carolic acid product.In the application, when catalyzing and oxidizing dichloro chrysanthemic acid ethyl ester, a high-activity H2WO4 / C heteropoly acid is used as a catalyst, the reaction scheme is optimized, the selectivity of the reaction is greatly improved, the number of cycles of the catalyst is increased, and after 20 cycles of the new catalyst, the catalyst activity does not decrease obviously.Furthermore, due to the great improvement of selectivity, the loss of product is reduced, and the yield is improved.

This invention relates to a solid acid catalyst, its preparation, and its application in the catalytic dehydration of bioethanol to ethylene. The active component of the catalyst comprises two parts: (1) a main catalyst and (2) a co-catalyst. This invention utilizes a suitable amount of chelating agent to chelate with the metal in the heteropolyacid, thereby inhibiting the aggregation of heteropolyacid particles and improving dispersion; and by introducing other functional groups to modulate the acid strength and acid density of the catalyst, it inhibits the formation of carbon deposits, thus improving the stability of the catalyst. The catalyst prepared under mild conditions and with a stable and controllable process, the resulting catalyst has advantages such as low reaction temperature, high activity, good stability, and strong resistance to carbon deposition.

This invention belongs to the field of pipeline anti-corrosion coating technology, specifically relating to a heteropolyacid intercalated graphene oxide-epoxy anti-corrosion coating and its preparation method. The heteropolyacid intercalated graphene oxide-epoxy anti-corrosion coating, by weight percentage, comprises the following components: 40-60% epoxy resin, 0.5-3% heteropolyacid intercalated graphene oxide nano-inorganic filler, 10-20% epoxy curing agent, 0.3-1.5% dispersant, and 22.5-38.5% solvent. This invention utilizes the electrostatic bridging effect of cationic polyelectrolytes to obtain an electrostatically assembled material of heteropolyacid and graphene oxide, achieving a synergistic effect of physical barrier and chemical corrosion protection. Combined with the excellent adhesion and chemical corrosion resistance of epoxy resin, the prepared epoxy coating exhibits good density, strong adhesion, and excellent resistance to salt spray and acidic media corrosion, enabling it to adapt to the complex service environment of pipelines for extended periods.

The application provides a preparation method of dibenzoyl-p-benzoquinone dioxime. The method comprises the following steps: (1) adding a heteropoly acid catalyst into an ethanol solution of p-benzoquinone dioxime to obtain a mixed solution; (2) adding an ethanol solution of benzoic acid into the obtained mixed solution, and then performing a reaction; after the reaction is completed, filtering the obtained reaction liquid, drying and screening the obtained filter residue to obtain dibenzoyl-p-benzoquinone dioxime. The method uses p-benzoquinone dioxime and benzoic acid as raw materials, uses ethanol as a reaction solvent, uses a heteropoly acid as a catalyst for a condensation reaction, and synthesizes dibenzoyl-p-benzoquinone dioxime in one step. The solvent ethanol used in the method can be recovered and reused through reduced pressure distillation, and the catalyst heteropoly acid can be recycled and reused after being filtered, so that the output of acidic production wastewater is reduced, the generation of strong corrosive hydrogen chloride gas is avoided, and the green environmental protection requirement is met.

This invention discloses a method for preparing a heteropolyacid catalyst for the preparation of 2-chloro-propylene oxide. The catalyst obtained by this method, in conjunction with hydrogen peroxide, epoxidizes 2-chloropropylene at 30°C-50°C to prepare 2-chloro-propylene oxide. The catalyst is a heteropolyacid with a C2... m H n N x Z a M b O y Here, m is 64-120, n is 127-325, x is 2-8, y is 5-94, a is 1-2, b is 1-18, Z is one of Si or P, and M is one of Nb, Mo, W, or Ta; the concentration of hydrogen peroxide is 20%-50%. This method operates under mild conditions, requires no additional substances, and produces a catalyst with good dispersibility, high stability, and easy recovery. This catalyst preparation method is simple, exhibits excellent performance in the production of 2-chloro-propylene oxide, and operates under relatively mild conditions, making it of great industrial application value.

The present invention provides a heteropolyacid salt with a modified defect site or a mixture thereof, the heteropolyacid salt with a modified defect site or a mixture thereof characterized in that a cation part of the heteropolyacid salt with a modified defect site includes an organic sulfonium cation, and the organic sulfonium cation has one or more electron-withdrawing groups and a polar group having one or more acid-dissociable groups.

The invention relates to the technical field of catalysts, and discloses a catalyst for reducing the sulfur content of petroleum coke and a preparation method thereof.Sodium phytate containing multiple phosphate groups is used for replacing part of sodium phosphate salt, sodium tungstate, ammonium molybdate and lanthanum nitrate are subjected to a reaction, and obtained rare earth lanthanum phosphorus molybdenum tungsten heteropoly acid contains more anions; the rare earth lanthanum phosphorus molybdenum tungsten heteropoly acid and the citric acid quaternary ammonium salt containing a plurality of quaternary ammonium salt cations form stronger electrostatic interaction, and meanwhile, the citric acid quaternary ammonium salt contains a plurality of hydroxyl groups and can form hydrogen-bond interaction with the surface of the rare earth lanthanum phosphorus molybdenum tungsten heteropoly acid, so that the surface modification of the citric acid quaternary ammonium salt on the rare earth lanthanum phosphorus molybdenum tungsten heteropoly acid is effectively realized; after modification, the dispersity of the rare earth lanthanum phosphorus molybdenum tungsten heteropoly acid is improved, agglomeration is reduced, more catalytic active sites are achieved, the contact area between the rare earth lanthanum phosphorus molybdenum tungsten heteropoly acid and petroleum coke is increased, and sulfur-containing compounds such as thiophenic sulfur and the like which are difficult to degrade in the petroleum coke are efficiently oxidized and removed through synergistic oxidation catalysis with hydrogen peroxide.

This invention relates to a heteropolyacid catalyst for the condensation of formaldehyde and methyl formate to methyl glycolate, the preparation method of which includes the following steps: (1) loading the active component and (2) overflow hydrogen reduction. This invention uses common silica as a support and employs a co-impregnation method to load the active component to prepare the catalyst, under mild conditions and with a stable and controllable process. By doping with an appropriate amount of metal, overflow hydrogen is induced to reduce some coordinating atoms in the heteropolyacid as basic sites, which synergistically interact with the strongly acidic sites of the heteropolyacid to promote the cross-condensation of formaldehyde and methyl formate, thereby improving the reaction activity and selectivity. The prepared catalyst has advantages such as low reaction temperature, high activity, and good selectivity.

The invention belongs to the technical field of polymer catalysis, and discloses a MeOH-difunctional zirconium-based heteropolyacid catalytic system as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing a sodium tungstate aqueous solution and a sodium metasilicate aqueous solution, adding a hydrochloric acid solution and the sodium metasilicate aqueous solution into the sodium tungstate aqueous solution, adjusting the pH value, standing, and adding potassium chloride to obtain SiW-1; s2, dissolving SiW-1 in deionized water, adjusting the pH value, standing, and adding potassium chloride to obtain SiW; and S3, dissolving SiW in deionized water, adjusting the pH value, adding a zirconium oxychloride aqueous solution, adjusting the pH value again, adding cesium chloride, stirring, carrying out suction filtration, collecting precipitate, grinding into powder, and adding the powder into MeOH to obtain the heteropolyacid catalytic system. The heteropolyacid catalytic system disclosed by the invention is excellent in catalytic effect, simple and convenient to prepare and capable of being recycled.

The application belongs to the field of catalysts and preparation thereof, and particularly relates to a catalyst, a preparation method and a method for preparing peroxy acid. The catalyst comprises modified molecular sieves and heteropoly acid supported on the modified molecular sieves, wherein the surface of the modified molecular sieves is modified with alkyl and amino groups. When the catalyst is used to prepare peroxy acid, the conversion rate of organic acid can be improved, the equilibrium conversion rate is higher than 60%, the selectivity of the prepared peroxy acid is higher than 98%, and the catalyst can be recycled and reused, and is suitable for industrial production.

The application relates to a high-efficiency electrode material for solid polymer water electrolysis, in particular to a low-oxygen-evolution-potential electrode taking a base metal as a raw material and a preparation method thereof. The method obtains a heteropolyacid compound with a vacancy-type Dawson structure through co-precipitation and nanoscale grading technology, and the molecular formula of the heteropolyacid compound is Na8K 18 [Sc 12 (H2O)6(OH)3(HPO4)2(Se2Mo 18 O 62 )3]xH2O. The catalyst has an oxygen evolution reaction overpotential lower than 300 mV, and a cycle life of up to 200 h at 1 Acm – 2 When compared with a traditional noble metal electrode, the base metal electrode of the application not only has a lower cost, but also exhibits excellent electrocatalytic activity and stability, can maintain high-efficiency performance under long-time operation, and provides an economic and efficient solution for the wide application of solid polymer water electrolysis technology.

The application provides a molecular sieve composite material and a preparation method and application thereof. The preparation method comprises the following steps: mixing La2O3 / PMo heteropoly acid / KIT-6 mesoporous molecular sieve oxide, a Y molecular sieve directing agent, an organic matter, an aluminum source, an alkali source, a silicon source and water to obtain a mixture A, and performing crystallization on the mixture A to obtain a solid phase Y / La2O3 / PMo heteropoly acid / KIT-6 molecular sieve composite oxide material through solid-liquid separation; wherein the organic matter comprises at least one of hydroxypropyl methyl cellulose, polyethylene glycol and cetyltrimethylammonium bromide. The Y / La2O3 / PMo heteropoly acid / KIT-6 molecular sieve composite oxide is a micropore-mesopore composite material, has a high mesopore pore size distribution, has a high infrared acid amount, has high aromatic hydrocarbon inferior distillate selective cracking performance, and can realize high light naphtha and heavy naphtha yield in hydrocracking.

A method of producing acrolein from glycerol is disclosed. The method may include introducing a heterogenous acid catalyst into a reactor. The heterogenous acid catalyst may be a heteropoly acid catalyst or a sulfonic acid catalyst. The heterogenous acid catalyst may be heated to a target reaction temperature while in the reactor. In some cases, the heterogenous acid catalyst may be preheated in the reactor before being heated to the target reaction temperature. Once the heterogenous acid catalyst reaches the target reaction temperature, glycerol may be introduced into the reactor to contact the heterogenous acid catalyst. Contact of the glycerol with the heterogenous acid catalyst causes a reaction that dehydrates the glycerol in the reactor and produces an acrolein-containing effluent. The effluent may be discharged from the reactor and may be subjected to further downstream processing, including converting the acrolein into acrylic acid.

The invention belongs to the technical field of heterogeneous catalysts for synthesis of polycaprolactone-polyethylene glycol segmented copolymers, and particularly relates to a copper-silicon-tungsten-containing heteropoly acid metal MOF heterogeneous catalyst and a preparation method thereof. The polyacid type metal-organic framework heterogeneous catalyst can effectively catalyze epsilon-caprolactone and PEG to carry out ring-opening copolymerization so as to prepare a related technology of the PCL-PEG segmented copolymer, and the related technology is not reported yet. Aiming at the problems, the invention provides the copper-silicon-tungsten-containing heteropolyacid metal MOF heterogeneous catalyst, the chemical formula of the copper-silicon-tungsten-containing heteropolyacid metal MOF heterogeneous catalyst is [Cu2 (L) 3 (SiW12O40) (H2O) 4] n, and the catalyst is a heterogeneous catalyst, not only inherits the characteristics of high specific surface area and adjustable structure of an MOF material, but also has excellent catalytic activity and acidity of heteropolyacid, provides more active sites for catalytic reaction, and has a good application prospect. Compared with a traditional homogeneous catalyst, the catalyst has the advantage that the catalyst can be easily separated from and recycled from a reaction system.

The application relates to the technical field of lithium ion batteries, in particular to a modified nano single-crystal positive electrode material, a preparation method thereof and a solid-state battery. The preparation method of the modified nano single-crystal positive electrode material comprises the following steps: mixing a high-nickel positive electrode precursor material, a lithium salt and a grain boundary separation aid, carrying out first calcination and crushing to form a first intermediate; mixing the first intermediate with a fast ion conductor, carrying out second sintering to form the modified nano single-crystal positive electrode material; the grain boundary separation aid comprises a tungsten-containing heteropoly acid; the mass ratio of the grain boundary separation aid to the high-nickel positive electrode precursor material is (1-2):100; the fast ion conductor comprises at least one of a titanate, a niobate, a titanium niobate, a silicate, a phosphate, a phosphorus-iodine compound and an oxide type inorganic electrolyte. The modified nano single-crystal positive electrode material is nanoscale, the surface is coated with a limited fast ion conductor, the synergistic optimization of ion transmission, interface compatibility and interface stability can be realized, and the high-voltage stability is improved.

The invention belongs to the technical field of metal catalyst preparation, and particularly relates to a process for degrading VOCs in sulfur-containing waste gas. The process comprises the following steps: (1) preparing a surfactant solution and a catalyst carrier; (2) blending a phthalocyanine ring ligand, ZIF-L, a central metal salt, a reaction auxiliary agent and a surfactant solution, and adding a catalyst carrier for primary impregnation; continuously adding heteropoly acid and vanadium salt for secondary impregnation; (3) blending the catalyst carrier subjected to secondary impregnation with a nitrogen source, and carrying out a melting reaction; (4) heating, introducing air for primary calcination, then performing secondary calcination in an inert atmosphere, and cooling to obtain the VOCs catalyst; and (5) loading the VOCs catalyst into a reactor, heating, and introducing sulfur-containing waste gas to degrade VOCs in the sulfur-containing waste gas. By preparing the multi-metal catalyst, the VOCs degradation efficiency and the sulfur dioxide poisoning resistance of an existing metal catalyst are improved.