31 results about "Heterogeneous condition" patented technology

The invention provides an intelligent encoding method and system of Chinese disease diagnoses based on a word segmentation network. The method includes following steps: step 1, obtaining a Chinese disease diagnosis name; step 2, matching the Chinese disease diagnosis name with a dynamic extended word segmentation network, extracting key information from the Chinese disease diagnosis name, and forming a key word group through the extracted key information; and step 3, matching the key word group with a word group encoding mapping table and outputting an unmatched result or an ICD code. Comparedwith the prior art, the beneficial effects of the method and system are that firstly, standard encoding of medical record data in a heterogeneous condition is unified, a solid data standardization support is provided for management and decision of the medical quality and the medical health insurance fund, and gradual standardization and normalization of our national clinical medical practice arepromoted; secondly, the encoding operation of the ICD can be automatically accomplished, manual participation is avoided, the encoding speed is high, the cost is low, and the accuracy is high; and thirdly, unified and standard ICD codes can be achieved.

The invention discloses a method for synthesizing stilbenoids of styrenemod, pterostilbene, piceatannol and resveratrol oxide by hydrochloric acid heterogeneous chlorination. The method takes substituted benzyl alcohol as a raw material, adopts hydrochloric acid for preparing chlorinated hydrocarbons under heterogeneous conditions and prepares the stilbenes compounds by Wittig-Horner condensation. The method is simple and easy to operate, the reactants involved in the synthesis process are safe, the products can not cause environmental pollution, the cost is low, and the yield is high, thereby being applicable to industrial production of styrenemod, pterostilbene, piceatannol and resveratrol oxide.

The invention relates to a long chain paraffin hydrogenation heterogeneous condensation freezing point depressing method and a catalyst thereof and belongs to the technical field of energy. A single-section or two-section serial connection hydrogenation heterogeneous process is adopted; raw oil and hydrogen pass through a hydrogenation heterogeneous catalyst bed layer, wherein the raw oil comprises vegetable oil, Fischer-Tropsch wax oil or waste lubricating oil which are hydrogenated; and an obtained hydrogenation heterogeneous product has the characteristics of low freezing point, high cetane number and the like. An adopted hydrogenation heterogeneous condensation freezing point depressing catalyst is a molecular sieve catalyst, and comprises a molecular sieve carrier and a metal active component. The total weight of a molecular sieve is 20 weight percent to 90 weight percent of the weight of the molecular sieve carrier, and the weight of the metal active component is 0.05 weight percent to 0.5 weight percent of the total weight of the total catalyst. The process is simple, the operation is stable, the freezing point of the raw oil can be effectively reduced to 10DEG C below zero to 20DEG C below zero by selecting appropriate hydrogenation heterogeneous conditions, so that the fluidity of an oil product at low temperature is ensured, and wide industrial application prospect is realized.

The invention relates to a MPEG-4 SP-to-AVS video code transformation method, which is characterized in that the method comprises the following steps: step one, a MPEG-4 SP code stream is decompressed fully to obtain the MPEG-4 SP data; step two, the MPEG-4 SP data is processed to obtain an image spatial domain sequence for specifying a space and the time resolution, an AVS image coding type, an AVS micro block coding mode and an AVS micro block motion vector; step three, an AVS code stream is obtained from the image spatial domain sequence for specifying the space and the time resolution, the AVS image coding type, the AVS micro block coding mode and the AVS micro block motion vector. A rapid MPEG-4 SP-to-AVS code transformation strategy based on a cascading structure in the invention can be suitable for the high fidelity real-time code transformation, the adaptability of the structure is strong, and the invention can meet a plurality of code transformation application requirements. The invention is in particularly suitable for the integration, and the concentrated browsing, transmission and memory of video resources under the heterogeneous condition of a cross-area cross-industry monitoring network at present.

The invention provides an intelligent coding method and system for Chinese surgical operation based on a word segmentation network. The method comprises the following steps of step 1, obtaining a nameof the Chinese surgical operation; step 2, adapting the name of the Chinese surgical operation to the dynamically expanding word segmentation network, and extracting key information from the name ofthe Chinese surgical operation to constitute a keyword group; step 3, adapting the keyword group to a phrase encoding mapping table, and outputting the unmatched result or ICD codes. Compared with theprior art, the method has the advantages that 1, standard codes of medical record data under heterogeneous conditions are unified to provide solid data standardization support for medical quality andmedical insurance fund management decision and promote gradual standardization and normalization of clinical practices in China; 2, by adopting method, the ICD coding work can be automatically completed without manual participation, the coding speed is fast, the cost is low, and the correct rate is high and the like; 3, unified standard ICD codes are adopted.

The invention provides an ozone catalyst for sewage treatment and a preparation and sewage treatment method thereof. The catalyst can catalyze an ozone sewage treatment system under the heterogeneous condition, and therefore secondary pollution and other problems caused by a homogeneous ozone catalyst in the prior art can be avoided, and the ozone catalyst has the advantages of being stable in structure, capable of effectively improving ozone oxidization activity and the like. Meanwhile, in the method, inorganic materials with catalytic activity firmly wrap surfaces of kieselguhr granules, calcining and forming are conducted at a time to prepare the catalyst, and the method has the advantages of being simple in operation step, high in preparation efficiency, free of raw material waste and the like. Furthermore, in the sewage treatment method, the catalyst is adopted as a heterogeneous catalyst for ozone treatment of polluted water bodies, and therefore the zone oxidization capacity can be effectively improved, treatment efficiency is improved, and meanwhile secondary pollution can not be caused.

The decomposition method of cyclodexyl hydrogen peroxide is characterized by that under the heterogeneous condition intermittently or continuously adding solid alklouli catalyst whose PKa=10-47 in decomposition reactor, controlling the weight ratio of the solid alkali catalyst and cyclodexane oxide product in 1:20-1:300, reaction temp. is 10 deg.C-170 deg.C, reaction time is 5-200 min. and can decompose the cyclodexyl hydrogen peroxide into cyclodexanone and cyclodexanol.

The invention provides a synthetic method for aryl thioether compounds. The synthetic method comprises the following steps: adding phenolic compounds or aminated compounds, thio-alcohol compounds, a transition-metal catalyst and water into a reaction bottle, sealing the reaction bottle, introducing oxygen into the reaction bottle, carrying out heating and a stirring reaction and then successively carrying out extraction, drying, concentration and purifying so as to obtain the aryl thioether compounds. According to the invention, the phthalocyanine transition-metal catalyst is employed for catalysis of the oxidation coupling reaction of phenol or aminated compounds with thio-alcohol compounds so as to prepare the aryl thioether compounds; the synthetic method is simple in steps, easy and practicable in operation and high in product yield, as high as 80% or above and provides a novel approach for synthesis of the aryl thioether compounds; and compared with conventional methods, the method has the advantages that raw materials are cheap and easily available, water is used as a solvent (the catalyst can be dissolved in water), aryl thioether compounds with high separation yield can be obtained under heterogeneous conditions, and reaction efficiency and the atom economy of reaction can be improved.

The invention discloses a solid carbon base keggin type phosphomolybdic heteropoly acid catalyst and application thereof. The preparation steps are as follows: a carbon porous material and a carboxylfunctional group coupling agent are added into a dilute acid solution with the pH being 3-4, magnetic stirring is conducted at the room temperature for 12-24 h, Keggin type phosphomolybdic heteropolyacid, an inorganic metal salt and a surfactant are added, ultrasonic vibration is conducted for 0.5-1 h, a mixture is transferred into a hydrothermal reactor, a temperature programming dryer is used,the reaction temperature is raised from the room temperature to 150-180 DEG C in 0.5-1 h, the temperature is maintained for 48-72 h, and then decreased to the room temperature naturally, washing withultrapure water and ethanol for multiple times is conducted, filtration is conducted, and drying is conducted for 10-12 h. The solid carbon base keggin type phosphomolybdic heteropoly acid catalyst can efficiently catalyze hydrogen peroxide to oxidize iodine ions to form an iodine simple substance under heterogeneous conditions, reaction conditions are mild, the hydrogen peroxide utilization rateis high, environmental friendliness, no pollution and no peroxidation are achieved, thermal stability is good, and the catalyst can be reused for multiple times, and is easy to recycle.

The invention discloses a straight pile vertical impedance calculation method, which comprises the following steps: vertically dispersing a pile body of the straight pile and foundation soil accordingto the horizontal layering condition of a soil body, and dispersing the foundation soil in the radial direction according to the disturbance condition of soil around the pile; solving a wave equationof each soil ring layer and calculating the dynamic stiffness on the pile-soil contact surface through a radial transfer matrix method; and calculating the vertical impedance of the straight pile through a vertical transfer matrix method after solving the equation. The straight pile vertical impedance calculation method has the advantages that the vertical impedance of the straight pile under theradial heterogeneous condition of saturated soil around the pile caused by the construction disturbance effect in the layered foundation is calculated and considered; radial heterogeneity of layeredsaturated soil under a construction disturbance effect is considered through a bidirectional transfer matrix method, and meanwhile, a fractional derivative operator is adopted to describe a stress-strain relationship of foundation soil so as to improve calculation precision; and a Rayleigh rod vibration theory is adopted to describe vertical vibration of a pile body so as to consider a transverseinertia effect of pile body vibration. By means of the straight pile vertical impedance calculation method, the calculated vertical impedance of the straight pile better conforms to engineering practice.

The invention relates to a 16 series power lithium iron phosphate battery matrix equalization control device and method. The device is composed of a battery condition data collecting unit, a bidirectional programmable control data processing unit, a single battery state information matrix generating unit, a single battery information matrix verification control unit and an equilibrium switch matrix control unit. A 16 series power lithium iron phosphate battery pack is connected with the exteriors of the battery condition data collecting unit and the equilibrium switch matrix control unit. The beneficial effects are that, a plurality of data collecting ports adapted to battery pack networks are composited, which meets the further cascade communication and equalization control requirements of a plurality of battery packs. Battery heterogeneous condition data is subjected to charge homogeneous processing, generated matrixes and verification matrixes are constructed and stored according to battery test characters, battery pack information matrixes after verification can be identified intelligently, locally-judged equalization information is transmitted to the equilibrium switch matrix control unit, and the accuracy, precision and efficiency of equalization control is raised.

The invention relates to a metadata server cluster load balancing method based on weight. A metadata server is an important component of an object storage system and plays a role of managing a name space of a file system, controlling the user access and mapping the physical storage position of files. The metadata server cluster load balancing method based on weight comprises the steps of: collecting the service request quantity and the average operation delay of the parallel processing of metadata service; utilizing a least square method to perform linear fitting for the mapping relation curves of the service request quantity and the average operation delay; using the reciprocal of a curve slope of the fitted curve as inherent property of the metadata server; and proportionally allocating the work load by using the inherent property of the metadata server as weight, thereby supporting heterogeneous metadata server cluster. The method of the invention achieves low cost, dynamically regulates the work load, and keeps load balance of the metadata server cluster under heterogeneous condition of the equipment.

The invention discloses a production method of disulfonated dihalogenated diphenylsulfone. The method disclosed by the invention comprises the following steps: carrying out a reaction on fuming sulfuric acid with accurately calibrated sulfur trioxide concentration with dihalogenated diphenylsulfone to obtain a completely disulfonated dihalogenated diphenylsulfone product; after the reaction, omitting a salting-out process, carrying out neutralization directly, and carrying out filtering and drying; and then improving the purity of the product through recrystallization. According to the technical scheme provided by the invention, the addition amount and concentration of a sulfonating agent sulfur trioxide are accurately controlled, the reaction is ensured to be carried out always under a homogeneous phase, meanwhile the defects that the reaction cannot be carried out completely under the heterogeneous condition caused by excessive sulfonating agent can be avoided, the salting-out process is omitted, the influence of introducing excessive inorganic salt on the post-treatment is avoided, and finally the high-purity polymerization-grade product is obtained through recrystallization.

The invention provides a simulated testing device and method for the gas production contribution rate of a heterogeneous coal-bearing reservoir. The device is composed of a pressurization system, a heterogeneous coal-bearing rock series simulation system, a back pressure system and a data acquisition and processing system. The heterogeneous coal-bearing rock series simulation system is provided with two gas input ends, the two gas input ends of the heterogeneous coal-bearing rock series simulation system are connected with the gas output end of the pressurization system and the gas output endof the back pressure system. To sum up, the gas production contribution rate of different layers can be tested under the condition of considering interlayer channeling, and a simple and feasible method is provided for gas production prediction of reservoirs with large reservoir thickness, reservoirs with complex lithological characters or multiple-layer reservoirs encountered on the scene. The device can be used for simulating accurate prediction of the gas production rate of coal and rock reservoirs under heterogeneous conditions, and thus a theoretical basis is provided for follow-up economic evaluation, engineering construction and accurate implementation of deployment plans.

The invention provides a heterogeneous reservoir high-water-content horizontal well water invasion process inversion method and device, and the method comprises the steps: building a high-water-content horizontal well water invasion process physical model according to the characteristics of a high-water-content horizontal well water invasion process in a heterogeneous reservoir; establishing a water invasion volume mathematical model of the heterogeneous horizontal section of the high-water-content horizontal well according to the physical model of the water invasion process of the high-water-content horizontal well, and determining the corresponding water invasion volumes of the heterogeneous horizontal section at different time; and establishing an implicit expression of the water invasion height and time according to the water invasion volumes corresponding to the heterogeneous horizontal section at different times, and determining the water invasion heights at different moments. Aiming at the heterogeneous condition of the horizontal section of the heterogeneous reservoir high-water-cut horizontal well, the problems that an existing horizontal well water invasion inversion method is not suitable for the heterogeneous condition of the horizontal section and cannot achieve water invasion height inversion are solved, and accurate and complete inversion of the high-water-cut horizontal well water invasion process is achieved. The method and device have important significance in improving the treatment level of the high-water-content horizontal well.

The invention discloses a solid silicon-based Waugh-type molybdenum-containing heteropolyacid catalyst and application thereof. A preparation method for the solid silicon-based Waugh-type molybdenum-containing heteropolyacid catalyst comprises the following steps: adding a siliceous porous material and an amido functional group coupling agent into a dilute acid solution with a pH value of 3-4, carrying out magnetic stirring at room temperature for 12-24 h, then adding Waugh-type molybdenum-containing heteropoly acid and a surfactant, performing ultrasonic oscillation for 0.5-1 h, transferringthe formed substance into a hydrothermal reactor, raising a reaction temperature from room temperature to 150-180 DEG C within 0.5-1 h by using a temperature-programmed oven, keeping the temperature for 48-72 h, then carrying out natural cooling to room temperature, performing rinsing with ultrapure water and ethanol several times separately, and carrying out filtering and drying for 10-12 h. Thecatalyst of the invention can efficiently catalyze hydrogen peroxide to oxidize iodine ions under heterogeneous conditions so as to produce elemental iodine; and the catalyst has the advantages of mild reaction conditions, high utilization rate of hydrogen peroxide, friendliness to environment, no pollution, no peroxidation and good thermal stability, can be repeatedly reused a plurality of times,and is easy to recycle.

The invention relates to a method for preparing galactosyl dextran derivates. The method comprises the following steps: (a) adding galactose and glucosan to ionic liquid, heating and dissolving to obtain an initial solution; (b) adding thionyl chloride to the initial solution obtained in the step (a), and heating to obtain the galactosyl dextran derivates. The reaction system disclosed by the invention is in a homogeneous state, so that, compared with a heterogeneous condition, the reaction activity is greatly improved, and the preparation method disclosed by the invention is simple and feasible, and easy to control reaction.

The invention discloses a heterogeneous buried hill gas reservoir well control reserve prediction method and device.The method comprises the steps that a gas reservoir is divided into N seepage areas in the radial direction of a borehole according to the heterogeneous condition, the N seepage areas are distributed in a concentric annulus mode, and basic parameters of the N seepage areas are obtained; a pressure propagation equation of the gas reservoir from the concentric circle center in the radial direction is established, and the gas reservoir well control radius is obtained through the pressure propagation equation; and well control reserves are predicted by using the gas reservoir well control radius. The method can consider the characteristics of heterogeneous distribution of buried hill gas reservoirs, is more consistent with the actual situation, and achieves the accurate prediction of well control reserves.

The invention relates to a MPEG-4 SP-to-AVS video code transformation method, which is characterized in that the method comprises the following steps: step one, a MPEG-4 SP code stream is decompressedfully to obtain the MPEG-4 SP data; step two, the MPEG-4 SP data is processed to obtain an image spatial domain sequence for specifying a space and the time resolution, an AVS image coding type, an AVS micro block coding mode and an AVS micro block motion vector; step three, an AVS code stream is obtained from the image spatial domain sequence for specifying the space and the time resolution, theAVS image coding type, the AVS micro block coding mode and the AVS micro block motion vector. A rapid MPEG-4 SP-to-AVS code transformation strategy based on a cascading structure in the invention canbe suitable for the high fidelity real-time code transformation, the adaptability of the structure is strong, and the invention can meet a plurality of code transformation application requirements. The invention is in particularly suitable for the integration, and the concentrated browsing, transmission and memory of video resources under the heterogeneous condition of a cross-area cross-industrymonitoring network at present.

The intelligent coding method and system for Chinese disease diagnosis based on the word segmentation network provided by the present invention comprises the following steps: Step 1, obtaining the Chinese disease diagnosis name; Step 2, adapting the Chinese disease diagnosis name and the dynamically expanded part word network, from Key information is extracted from the disease diagnosis name and the extracted key information is formed into a keyword group; step 3, the keyword group is matched with the phrase code mapping table and the unmatched result or ICD code is output. Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Unify the standard coding of medical record data under heterogeneous conditions, and then provide solid data standardization support for the management decision-making of medical quality and medical insurance funds, and promote the clinical Progressive standardization and normalization of medical practice. 2. Through this method, the ICD encoding work can be automatically completed without manual participation, and has the advantages of high encoding speed, low cost, and high accuracy rate. 3. Unified standard ICD coding.

The invention discloses a solid carbon-based Waugh-type molybdenum-containing heteropolyacid catalyst and application thereof. A preparation method for the solid carbon-based Waugh-type molybdenum-containing heteropolyacid catalyst comprises the following steps: adding a carbonaceous porous material and a carboxyl functional group coupling agent into a dilute acid solution with a pH value of 3-4,carrying out magnetic stirring at room temperature for 12-24 h, then adding Waugh-type molybdenum-containing heteropoly acid and a surfactant, performing ultrasonic oscillation for 0.5-1 h, transferring the formed substance into a hydrothermal reactor, raising a reaction temperature from room temperature to 150-180 DEG C within 0.5-1 h by using a temperature-programmed oven, keeping the temperature for 48-72 h, then carrying out natural cooling to room temperature, performing rinsing with ultrapure water and ethanol several times separately, and carrying out filtering and drying for 10-12 h. The catalyst of the invention can efficiently catalyze hydrogen peroxide to oxidize iodine ions under heterogeneous conditions so as to produce elemental iodine; and the catalyst has the advantages ofmild reaction conditions, high utilization rate of hydrogen peroxide, friendliness to environment, no pollution, no peroxidation and good thermal stability, can be repeatedly reused a plurality of times, and is easy to recycle.

The present invention provides a method for predicting ground stress of phase-controlled heterogeneous mechanical parameters. The method for predicting ground stress of phase-controlled heterogeneous mechanical parameters includes: step 1, establishing a lithofacies interpretation template and performing single-well lithofacies interpretation; step 2, according to All single well lithofacies data interpreted are combined with seismic attribute data to perform cross-well prediction and establish a 3D lithofacies model; Step 3, establish the time-difference relationship of compressional and shear waves of different lithofacies, and solve the mechanical parameters of each single well; Step 4, establish a lithofacies model. A three-dimensional heterogeneous mechanical parameter model under phase control; and step 5, determining the boundary conditions for the finite element simulation of in-situ stress, and predicting the three-dimensional in-situ stress field. This phase-controlled heterogeneous mechanical parameter ground stress prediction method realizes the finite element ground stress simulation under the condition of three-dimensional heterogeneous mechanical parameters, which is closer to the real mechanical parameter distribution of underground geological bodies than the conventional intralayer homogeneous mechanical parameter model features, thereby greatly improving the prediction accuracy of in-situ stress.

The invention discloses a device for measuring carbon dioxide minimum miscible pressure in multiple modes, and solves the problem that testing of minimum miscible pressure with an existing instrument is performed under a homogeneous condition. The device includes a minimum miscible pressure test module which achieves a mixed phase, a miscible pressure test module in a fine tube and miscible pressure test modules in natural cores of different permeability, thus minimum miscible pressure under different pore throat conditions can be tested by measurement of gradual contact to achieve the mixed phase under different pore throat conditions, and according to plane heterogeneity between an injection well and an extraction well of a real reservoir stratum, the minimum miscible pressure under pore throats of the natural cores of different permeability of the reservoir stratum is further tested. The device not only can test minimum miscible pressure of carbon dioxide and crude oil under a heterogeneous condition, thereby obtaining the minimum miscible pressure of the real reservoir stratum, but can also master a fact that whether the same carbon dioxide and crude oil can realize a mixed phase in areas of different permeability.

The invention provides a synthetic method for aryl thioether compounds. The synthetic method comprises the following steps: adding phenolic compounds or aminated compounds, thio-alcohol compounds, a transition-metal catalyst and water into a reaction bottle, sealing the reaction bottle, introducing oxygen into the reaction bottle, carrying out heating and a stirring reaction and then successively carrying out extraction, drying, concentration and purifying so as to obtain the aryl thioether compounds. According to the invention, the phthalocyanine transition-metal catalyst is employed for catalysis of the oxidation coupling reaction of phenol or aminated compounds with thio-alcohol compounds so as to prepare the aryl thioether compounds; the synthetic method is simple in steps, easy and practicable in operation and high in product yield, as high as 80% or above and provides a novel approach for synthesis of the aryl thioether compounds; and compared with conventional methods, the method has the advantages that raw materials are cheap and easily available, water is used as a solvent (the catalyst can be dissolved in water), aryl thioether compounds with high separation yield can be obtained under heterogeneous conditions, and reaction efficiency and the atom economy of reaction can be improved.

The invention relates to a 16 series power lithium iron phosphate battery matrix equalization control device and method. The device is composed of a battery condition data collecting unit, a bidirectional programmable control data processing unit, a single battery state information matrix generating unit, a single battery information matrix verification control unit and an equilibrium switch matrix control unit. A 16 series power lithium iron phosphate battery pack is connected with the exteriors of the battery condition data collecting unit and the equilibrium switch matrix control unit. The beneficial effects are that, a plurality of data collecting ports adapted to battery pack networks are composited, which meets the further cascade communication and equalization control requirements of a plurality of battery packs. Battery heterogeneous condition data is subjected to charge homogeneous processing, generated matrixes and verification matrixes are constructed and stored according to battery test characters, battery pack information matrixes after verification can be identified intelligently, locally-judged equalization information is transmitted to the equilibrium switch matrix control unit, and the accuracy, precision and efficiency of equalization control is raised.

The invention discloses a method for visual sensing to detect chloride ions in sweat. The invention firstly prepares a perovskite nanocrystal (CsPbBr) with good luminescent properties and halogen exchange properties. 3 PNCs), and based on the fluorescence characteristics and halogen exchange characteristics of the material itself, it is used as a sensing material to detect chloride ions in sweat. The present invention makes full use of CsPbBr 3 Br in PNCs ‑ with Cl in the aqueous phase ‑ Halogen exchange under heterogeneous conditions, obvious wavelength shift, and visual sensing characteristics, combined with the advantages of high sensitivity and detection of fluorescence spectroscopy, provide a convenient, simple, no-sample pre-treatment condition, and easy to popularize and use Chlorine in sweat Ion determination method.

The invention discloses a solid silica-based Anderson type molybdenum-containing heteropoly acid catalyst and application thereof. The catalyst comprises the following steps of adding a silica porousmaterial and an amino functional group coupling agent into a dilute acid solution with pH of 3-4, stirring with magnetic at the room temperature for 12-24 h, adding Anderson type molybdenum-containingheteropoly acid and a surfactant, vibrating with ultrasonic for 0.5-1h, transferring the solution into a hydrothermal reactor, using an oven with programmed heating, raising the reaction temperaturefrom the room temperature to 150-180 DEG C within 0.1-1 h, maintaining the temperature for 48-72 h, then cooling the reaction temperature naturally to the room temperature, washing several times withultrapure water and ethanol respectively, and filtering and drying for 10-12 h. The catalyst can effectively catalyze hydrogen peroxide to oxidize iodide ion under heterogeneous conditions to produceiodine elemental, a reaction condition is mild, the utilization rate of hydrogen peroxide is high, environmentally friendly and pollution-free are achieved, peroxidation does not exist, thermal stability is good, and the catalyst can be reused for many times and is easy to recycle.

The invention discloses a solid carbon-based germanium-molybdenum heteropolyacid catalyst and an application thereof. The preparation method of the catalyst comprises the following steps: adding a carbonaceous porous material and a carboxyl functional group coupling agent into a dilute acid solution with the pH value of 3-4, performing magnetic stirring for 12-24 h at room temperature, adding a Keggin type germanium-molybdenum heteropolyacid, an inorganic metal salt and a surfactant, performing ultrasonic oscillation for 0.5-1 h, transferring the product into a hydrothermal reaction kettle, performing heating from room temperature to 150 DEG C within 1 h by using a programmed heating oven, keeping the temperature for 48 h, then performing natural cooling to room temperature, respectively performing washing by using ultrapure water and ethanol for several times, performing filtering and performing drying for 12 h. The catalyst provided by the invention can efficiently catalyze oxidationof iodide ions by hydrogen peroxide to generate iodine elementary substances under a heterogeneous condition, has the advantages of mild reaction conditions, a high hydrogen peroxide utilization rate, environmental friendliness, no pollution, no peroxidation and good thermal stability, can be repeatedly recycled for multiple times, and is easy to recycle.