237 results about "Sodium acetrizoate" patented technology

The invention discloses an electrodynamic method for removing fluorine contaminant in soil, which is as follows: an anion-exchange membrane is arranged between the anode and the contaminated soil to prevent the H+ generated by the anode from entering the electrolyzer so as to avoid the increase of the acidity of the contaminated soil; sodium acetate solution is put in an anode chamber to be used as electrolyte, deionized water is put in a cathode chamber to be used as electrolyte, and the liquid levels of the anode chamber and the cathode chamber are maintained to be parallel; in the rehabilitating process, the electrolytes circulate constantly to be stirred evenly so as to bring away the H2 and O2 which are generated by the anode and the cathode; the sodium acetate solution added in the anode chamber supplies OH- which neutralizes the H+ generated by the anode, and the surplus OH- and the OH- generated by the cathode promote the adsorbed fluorine in the soil to be desorbed to be free fluorinions; and the fluoride in the soil is removed through the electrodynamic approaches of electromigration, electroosmosis and the like. The method can effectively promote the adsorbed fluoride to be desorbed from the surface of the contaminated soil particles, remarkably improves the fluorine contaminant removal efficiency, reduces overpotential and saves energy consumption, and after the soil is rehabilitated, the pH value of the soil is basically maintained at the original state.

The invention discloses a magnetic biochar adsorbing material and a preparation method thereof. The preparation method comprises the following steps: (1) preparation of biochar: by using powder obtained by treating plant biomass as a raw material, roasting under oxygen-free conditions to obtain porous biochar; (2) preparation of ferric iron precursor liquid: by using ethanediol as a dispersing agent, adding a solid-state ferric iron salt, continuing adding sodium acetate and a surfactant into the ethanediol, and stirring to form a disperse system which is the ferric iron precursor liquid; and (3) solvothermal reaction: uniformly mixing the biochar and ferric iron precursor solution to obtain a mixture, putting the mixture into a teflon hydrothermal reaction kettle, and carrying out solvothermal reaction to obtain the magnetic biochar adsorbing material. The pretreatment technique of the key biomass raw material and the specific conditions of solvothermal reaction in the preparation method are improved, thereby effectively solving the problem of poor connection stability between the magnetic biochar material magnetic particles and biomass.

The invention discloses a preparation method of PtRu/graphene nano electro-catalyst, comprising the following steps of: ultrasonically dispersing oxidized nano graphite sheets into liquid polylol; then adding a chloroplatinic acid solution and a sodium acetate solution, sufficiently mixing, wherein the content of the oxidized nano graphite sheets contained in a mixture is 0.3-1.1 g/L, the concentration of chloroplatinic acid is 0.0004-0.002 mol/L, the concentration of ruthenium chloride is 0.0004-0.0013 mol/L, and the concentration of sodium acetate is 0.005-0.027 mol/L; transferring the mixture to a microwave hydro-thermal reaction kettle for microwave hydro-thermal reaction for 5-10 minutes; and filtering, washing and drying to obtain the PtRu/graphene nano electro-catalyst, wherein the mass fraction of a PtRu alloy contained in the PtRu/graphene nano electro-catalyst is 20-40 percent, the mass fraction of graphene is 80-60 percent, the atomic ratio of the PtRu alloy is Pt:Ru=1:2-1.5:1, and the liquid polylol is propanetriol or glycol. The preparation method has energy saving, fastness, simple process, and the like; and in addition, the prepared PtRu/graphene nano electro-catalyst has good electrocatalysis property for the oxidation of methanol and ethanol and is widely used as anode catalysts of direct methanol fuel cells.

The present invention relates to rhodamine 6G hydrazide salicylal azomethine, a synthesization method and an application in the content determination of cupric ions, which belong to the field of the analysis and determination of cupric ions in water sample. The molecular structural formula of the rhodamine 6G hydrazide salicylal azomethine is shown on the right, and the present invention discloses the synthesization method of the rhodamine 6G hydrazide salicylal azomethine and rhodamine 6G hydrazide salicylal azomethine solution used for the content determination of a small amount of cupric ions in water sample: 0 percent to 98.99 percent of ethanol, 99.99 percent to 1 percent of acetic acid / sodium acetate buffer solution with the pH value of 5 to 9, in which the total concentration of acetic acid is 1 to 100 millimoles per litre, 0.01 percent of N, N-dimethylformamide and 1ppm to 100ppm of rhodamine 6G hydrazide salicylal azomethine, all measured in mass percentage. By a spectrophotometer, the solution can be used for the accurate quantitative determination of 0.005ppm to 0.256ppm of cupric ions in water sample as well as the semiquantitative determination of no less than 0.075ppm of cupric ions in water sample by direct naked-eye observation on the change of colors.

The present invention relates to a preparation method for folic acid. The method comprises the following process steps: (1) weighing various raw materials according to a weight part ratio; (2) adopting a liquid alkali to adjust the pH value of the raw materials at the temperature of 25-55 DEG C to maintain the pH value of 2.0-5.0, and carrying out a cyclization reaction for 4-9 hours to obtain the folic acid crude product. With the method of the present invention, the folic acid production cost is reduced; the price of the liquid alkali (the sodium hydroxide aqueous solution) is significantly less than the price of sodium acetate, and the use amount is reduced, such that the production cost is substantially reduced, and the market competition ability of the folic acid is enhanced; the sodium acetate is the solid, and can be used before dissolving in the water and adjusting the pH value, and the liquid alkali is the liquid, such that the dissolution operation is eliminated, and the labor intensity of the worker is reduced.

The invention discloses an animal nucleic acid sample normal temperature preservation reagent and an application thereof. The animal nucleic acid sample normal temperature preservation reagent comprises an acid cell lysis agent, nuclease inhibitors, a surfactant, sodium citrate and sodium acetate, wherein the acid cell lysis agent is guanidinium isothiocyanate, the used nuclease inhibitors are 8-hydroxyquinoline and beta-mercaptoethanol, and the used surfactant is lauryl sodium sulfate. On the other hand, the invention discloses a method for treating filter paper by using the animal nucleic acid sample normal temperature preservation reagent. The method comprises the following steps: 1) soaking the filter paper in the animal nucleic acid sample normal temperature preservation reagent; 2) baking the filter paper at 37-50 DEG C; 3) sterilizing the filter paper for later use.

The invention discloses a method for continuously fermenting pickle with low salt, which comprises the following steps of: A, cleaning and cutting fresh vegetables to be fermented; B, adding pickle juice into a constant temperature fermentation device, wherein the pickle juice comprises the following components in percentage by weight: 1 to 7 percent of salt, 0 to 1 percent of spice, 0 to 1 percent of functional bacterial powder special for the pickle, 0.1 to 2 percent of carbohydrate, 0.2 to 2 percent of yeast extract and 0 to 0.03 percent of sodium dehydroacetate, and enriching bacteria and culturing at the temperature of between 5 and 43 DEG C for 0.5 to 48 hours; and C, putting the cleaned and cut vegetables in the step A into the constant temperature fermentation device until the pickle juice submerges the vegetables, and fermenting at the temperature of between 5 and 43 DEG C for 0.1 to 90 hours to prepare the needed pickle. The method has the advantages of capacity of effectively shortening the fermentation period for fermenting the pickle with low salt, continuous production and stable and safe quality.

The invention discloses a production method of high-purity polyvinyl alcohol. The production method adopts polyvinyl acetate as the material, comprises alcoholysis reaction, saponification reaction as well as neutralizing, washing, separating and drying; the production method is characterized in that the saponification reaction is carried out in the following steps of adding a semi-finished product with alcoholysis degree of 80%-92% and grain size of 1mm-10mm, which is prepared by the alcoholysis reaction, into sodium hydroxide liquor with concentration of 4g/L-60g/L to stir and react for 0.5 hour under 0 DEG C-20 DEG C, wherein a batching mass ratio of the semi-finished product to alkali liquor is (1:2)-(1:7); residual alkaline is neutralized by using acetic acid after the reaction is ended, and then washed by using desalted water; and solid-liquid separation is carried out after washing, and solid is vacuum-dried to obtain the high-purity polyvinyl alcohol with alcoholysis degree greater than 92%. The product has sodium acetate content lower than 0.3%, and volatile component lower than 0.5%, can be directly applied to high-quality industries such as medicines and optical films without being re-processed, and is convenient for downstream manufacturers to use, so that using cost is lowered.

The invention relates to the field of selenium-rich rice byproducts, and in particular relates to a preparation method of rice bran selenoprotein powder. The method comprises the following steps of: grinding, screening and degreasing byproduct rice bran obtained after rice processing to prepare rough rice bran into degreased rice bran, mixing 60%-70% alcohol with the degreased rice bran in the material-liquid ratio of (1:3)-(1:5), stirring on a magnetic force mixing machine for a certain period of time, and centrifuging, wherein the processes are repeated for three times; and carrying out alkaline extraction with 0.02-0.1mol/L NaOH solution for 1-3 hours in the material-liquid ratio of (1:10)-(1:20) at the temperature of 30-40 DEG C, taking supernate after centrifuging, decolorizing with active carbon, adjusting an isoelectric point by utilizing a acetic acid-natrium aceticum buffer solution for acid deposition, then centrifuging, and freezing to dry after washing, thereby obtaining the rice bran selenoprotein powder with the protein extraction ratio of 60-80%, and the selenium content of 0.2-0.3mg/kg finally. The selenoprotein powder provided by the invention is natural in nutritional ingredient, is rich in trace element selenium, keeps the original nutrition ingredients in the rice bran selenoprotein powder effectively, and is suitably used as a food auxiliary material or a nutrition enhancer.

The invention relates to a method for preparing spherical super-paramagnetic ferroferric oxide nano-clusters. The method comprises the following steps: dissolving ferric chloride hexahydrate in ethylene glycol, wherein each millimole of the ferric chloride hexahydrate is dissolved in 1 to 40 milliliters of the ethylene glycol; stirring the mixture to obtain uniform reddish brown solution; dissolving anhydrous sodium acetate in the solution obtained by the step one; ultrasonically stirring the mixture to obtain yellowish-brown viscous solution, wherein the molar ratio of the anhydrous sodium acetate to ferric chloride is 1:1-8:1; dissolving polyacrylic acid in the solution and ultrasonically stirring the mixture to obtain uniform red viscous solution, wherein 1 milliliter of PAA is added into every 40 to 400 milliliter of ethylene glycol or solution of diethylene glycol; transferring the solution to a hydrothermal kettle inner container (made from tetrafluoroethylene) with a total volume of 50 milliliters; performing a reaction at the temperature of between 180 and 220 DEG C for 6 to 16 hours after enclosing the inner container; naturally cooling the inner container to room temperature; and extracting a sample and washing the sample with water and alcohol to obtain the spherical super-paramagnetic ferroferric oxide nano-clusters. A synthetic method only needs a one-step reaction, and a used reagent is cheap and nontoxic.

The present invention is directed to a preserved liquid aqueous pharmaceutical composition comprising one or more etherified cyclodextrin derivatives; one or more water-soluble preservatives; preferably selected from the group consisting of sorbic acid or salts thereof, preferably sodium sorbate, potassium sorbate, calcium sorbate; benzoic acid or salts thereof, preferably sodium benzoate; benzalkonium chloride; benzethonium chloride; cetylpyridinium chloride; sodium metabisulfite; sodium acetate; parabenes and salts thereof, preferably methylparabene, ethylparabene, propylparabene, butylparabene, butylparabene sodium; or combinations thereof; and at least one pharmaceutically active compound which is poorly water-soluble, very poorly water-soluble or water-insoluble. The liquid aqueous pharmaceutical composition provides an acceptable solubility of the pharmaceutically active compound, such as pimobendan, in aqueous solution whereby the water-soluble preservatives retain their effectiveness in the presence of the etherified cyclodextrin derivatives allowing the use in an oral administration form.

The invention relates to a magnetic water-soluble fullerene, and a preparation method and application thereof. The invention effectively solves the problems of low water solubility, low compatibility and poor targeting property of the fullerene. The method comprises the following steps: dissolving fullerene in toluene, adding sodium hydride and diethyl bromomalonate, stirring in a nitrogen protective atmosphere to remove sodium hydride and toluene, adding the dried diethyl-bromomalonate-substituted fullerene into the toluene, hydrolyzing until the toluene phase becomes colorless, adding concentrated hydrochloric acid, filtering to obtain a filter cake, removing insoluble substances and methanol, drying to obtain malonic-acid-substituted fullerene, dissolving in an ethylene glycol and di-acetal mixed solvent, adding sodium acetate and ferric iron salt to react, washing, drying to obtain ferroferric-oxide-carried fullerene, carrying out ultrasonic dispersion on the ferroferric-oxide-carried fullerene, amino water-soluble substance and EDC.HCl in phosphate, reacting in a dark place, carrying out vacuum filtration, and drying to obtain the magnetic water-soluble fullerene. The magnetic water-soluble fullerene has the advantages of favorable magnetic targeting propertt, strong water dispersity, low toxicity for organisms, high physical and chemical stability, good quality and low cost.

The invention relates to a method for treating acidic wastewater of an acrylic acid device. According to the method, a coupling technology is adopted for treating the acidic wastewater; according to the coupling technology, an oxidant is used for oxidizing and removing formaldehyde, acetaldehyde and acraldehyde out of the acidic wastewater; an alkali is used for neutralizing acetic acid and acrylic acid in oxidizing liquid; neutralizing liquid is separated by a membrane to remove water; and finally reduced-pressure concentrating, crystallizing and drying are carried out to prepare acetate. The formaldehyde removing rate of the oxidizing liquid in the method is more than 99.5%; after the neutralizing liquid is subjected to RO (Reverse Osmosis) membrane separation, transmitting liquid reaches national environment protection emission Standard II; the yield of sodium acetate trihydrate is more than 7.7% on the basis of the raw material acidic wastewater; and the sodium acetate trihydrate product can be used as a raw material of a snow-melting agent.

The invention relates to medical injection, in particular to a compound sodium acetate injection used for venoclysis. The injection is made of the materials with the weight ratio: 5.32g-5.88g of sodium chloride, 0.285g-0.315g of potassium chloride, 0.266g-0.294g of calcium chloride, 0.19g-0.21g of magnesium chloride and 5.035g-5.565g of sodium acetate; and the water used for injection is added up to 1000ml. Compared with the prior art, the pH value, the permeation pressure and the electrolyte of the compound sodium acetate injection are the closest to the pH value of blood plasma of human body, so that the compound sodium acetate injection can be widely suitable for various patients in a stress state, diabetes patients or hypoglycemia patients and children, and used for washing pipe when in blood transfusion. Furthermore, the compound sodium acetate injection has little incompatibility, low cost, wide application prospect and foreseeable great social and economic benefits.

A method for preparing an adsorption resin through using (methyl)acrylic acid production wastewater as a raw material comprises the following steps: carrying out a condensation polymerization reaction of acrylic acid, methacrylic acid and aldehyde under heating stirring conditions to generate a macromolecular high-boiling-point mixed polymer containing a carboxyl group and the like, carrying out adhesive curing of the mixed polymer by a water-soluble phenolic resin, and carrying out alkali activation to prepare a heavy metal adsorption resin; allowing low-boiling-point acetic acid to evaporate with water, neutralizing by an alkali, carrying out evaporative concentration, carrying out cooling crystallization, and recovering crystallized sodium acetate. The method for preparing the heavy metal adsorption resin belongs to the salvaging field, substantially reduces COD in the (methyl)acrylic acid wastewater, can be used for preparing heavy metal adsorbents, and has the advantages of wide range of suitable heavy metals, simple and stable process, easy control, low cost, and high economic, social and environmental benefits.

A solid agent for dialysis comprising an electrolyte, glucose and a pH adjusting agent required for the preparation of a bicarbonate dialyzing fluid, which solid agent for dialysis ensures stable presence of glucose in the stage of not only production but also storage, being free from the danger of decomposition and coloring and excels in storage stability, content uniformity and abrasion resistance, realizing extremely high workability on medical spots. In particular, a solid agent for dialysis comprising an electrolyte composition (the electrolyte composition composed of sodium chloride, potassium chloride, calcium chloride, magnesium chloride and sodium acetate), a pH adjusting agent and glucose characterized in that base particles are covered by a coating layer comprising a salt having, in thin-film X-ray diffraction, specified peaks at 2theta = 21.3 to 21.5 DEG and 2theta = 27.6 to 27.8 DEG (CuK alpha: lambda = 1.54058, and incident angle theta = 1 DEG).

The invention discloses a method for recycling and reutilizing phosphoric acid and acetic acid from a waste aluminum etching solution. The method comprises the following steps of (1) performing pressure-relief distillation on the waste aluminum etching solution, and removing acetic acid and nitric acid by a fractionation method; (2) treating by ethanol, purifying, and recycling the phosphoric acid; (3) adding sodium acetate into a nitric acid-acetic acid-water mixed solution to react, so as to obtain the acetic acid; applying a water absorbent, so as to obtain the high-concentration acetic acid. A harmless treatment and resource utilization method for recycling and reutilizing of the mixed acid is provided, and has the advantages that the resource recycling and reutilizing of the phosphoric acid and acetic acid can be furthest realized, the raw material is saved, the economic benefit is increased, the amount of wastewater is greatly reduced, and the waste of resource and the pollutionto environment are avoided; the technology process is simple, the operability is good, the effective resource utilization effect is realized, and the method is suitable for the industrial production and waste liquid treatment in the related fields.

The present invention discloses a preparation method for synthesizing platinum-carbon nano electric catalyst by utilizing microwave. Said method includes the following steps: dissolving platinum salt in glycol solution, the concentration of platinum salt in the solution is 0.001-0.08 mol/L, adding acetic acid solution as stabilizing agent, the concentration of sodium acetate in the synthetic solution is 0.005-0.03 mol/L, adding nano carbon carrier, utilizing ultrasonic treatment process to make nano carbon material be fully dispersed in the solution to obtain uniform mixture, heating said mixture in microwave oven, filtering washing and drying so as to obtain the platinum-carbon nano electric catalyst whose mass percentage of platinum is 10-40%. Said invention has extensive application in fuel cell.

The invention relates to a preparation method of a cefotaxime sodium crystal. The preparation method comprises the following steps of: dissolving sodium acetate in a mixed solvent of organic solvent and water below 10-40 DEG C, wherein the volume fraction of organic solvent in the mixed solvent is 30-70%; adding cefotaxime acid, and stirring until the cefotaxime acid reacts in the solution; adding a cefotaxime sodium crystal in the solution, then adding elution agents with a feeding time of 2-8 hours, cooling to 5 DEG C below zero to 5 DEG C; and filtering, washing and drying a crystal slurry to obtain the cefotaxime sodium crystal. By the preparation method, the phenomenon of gelatinization frequently seen in the crystallization process of the cefotaxime sodium crystal is avoided, the size distribution of the products is centralized and the major particle size is adjustable from 5mu m to 60my m, the liquidity of the product is good, the process yield is higher than 87%, and the product purity is higher than 95.5%.

The invention discloses a method for preparing phosphatidylserine under catalysis of immobilized phospholipase D. The method comprises the following steps: (1) with chitin as a vector and glutaraldehyde as a cross-linking reagent, immobilizing free phospholipase D to obtain immobilized enzyme of phospholipase D; (2) with the immobilized enzyme of the phospholipase D prepared in the step (1) as a catalyst, n-butyl acetate as an organic phase solvent, and 50mM of sodium acetate buffer solution of which the pH is 5.5 as a water phase solvent, reacting L-serine to react with soyabean lecithin at 20-60 DEG C according to the molar ratio of (10-100):1, thus obtaining phosphatidylserine; and at the end of reaction, filtering and recovering the phospholipase D for repeated use. By adopting the method disclosed by the invention, the ester transfer rate in the dual-phase catalytic system can be up to 78%, the immobilized enzyme can be repeatedly used, and the method is simple, easy to operate, and low in preparation cost.

The present invention discloses a method using acetic acid for controlled catalysis of orientational hydrolysis of xylan to prepare multicomponent xylooligosaccharide, and the method includes the following steps: 1) adding food grade acetic acid to a suspension reaction system containing no more than 20% of the xylan until the final concentration of the acetic acid is not more than 30%, controlling the reaction temperature at 110 to 125 DEG C for reaction for no more than 3h to obtain a xylan hydrolysate; 2) performing microfiltration and nanofiltration on the xylan hydrolysate product to obtain an entrapped xylooligosaccharide solution and an acetic acid through liquid, and recycling the acetic acid through liquid for using in the step 1); and 3) using an edible alkaline material for neutralizing the entrapped xylooligosaccharide solution to neutral and producing sodium acetate, and removing the sodium acetate by electrodialysis treatment to obtain a xylooligosaccharide product solution. The recyclable edible acetic acid is used as a catalyst for the realization of controlled hydrolysis reaction of the xylan in the mild reaction conditions for orientational catalysis of hydrolysis of the xylan to prepare a xylooligosaccharide product containing xylooligosaccharide components with the polymerization degree of 2-8, the yield is more than 30% of raw material xylooligosaccharide, the product almost contains no furan, formic acid and other decomposition products, and xylooligosaccharide green production can be achieved.

A nano rare-earth oxide is prepared from the inorganic salt of rare-earth element (Ce, La, Pr, Nd, or Tb) and ligand (oxalic acid, sodium oxalate, dicarbonate, 8-hydroxyquinoline, complexon, etc) through proportioning, mixing, and ball grinding while solid-phase chemical reaction to obtain precursor, removing impurities, drying, and medium-temp thermal decomposition. Its advantages are simple process, low cost, saving energy, high purity (more than 99%) and narrow size distribution (10-30 nm).

The present invention provides a compound food coloring preservative and the making method. The compositions of the present invention based on weight ratio are: cooked cured-meat pigment 30-35 percent, nisin 1-1.5 percent, sodium dehydroacetate 10-15 percent, potassium sorbate 10-15 percent, D- gluconic acid-triangle-lactone 30-35 percent and ascorbic acid 10-15 percent. The present invention uses cooked cured-meat pigment, which is made by the reaction of hemoglobin and sodium nitrate, and a certain quantity of nisin, sodium dehydroacetate, sodium sorbate, D- gluconic acid-triangle-lactone and ascorbic acid to completely compound based on a certain ratio, and then the present invention shows a good effect of replacing sodium nitrite, which not only can make the meat products have good color, but also can extend the shelf life of products. The results show that the compound food coloring preservative has good functions of colorizing and bacteriostasis, can obviously restrain the growth of microorganism in the meat products, can reduce the residue of the nitrate, can extent the shelf life of the meat products, and can produce meat products in place of sodium nitrate.

The invention provides a detection method of glucose related substances in an acetate compound electrolyte injection, related to the technical field of medicine. The detection method of glucose related substances in the acetate compound electrolyte injection comprises the following steps: preparing a system suitability solution: weighing a sodium acetate reference substance, a glucose reference substance and a glucose degradation product reference substance, placing in a 10ml volumetric flask, diluting to a mark with water, shaking well, and taking as the system suitability solution; preparinga test substance and a self reference solution: taking the sample directly for the test substance solution; measuring and taking the test substance solution, placing in a 50ml volumetric flask, diluting to the mark with water, shaking well as a contrast solution A; taking a portion of the contrast solution A, placing in a 100ml volumetric flask, diluting to the mark with water, and shaking well as a contrast solution B; and chromatographic conditions are as follows: Waters Sugar Park I column, 300mm x 6.5mm, 10[Mu]m; mobile phase, 50 mg/L aqueous solution of calcium ethylenediaminetetraacetate; flow rate, 0.3 ml/min; column temperature, 85+/-5 degrees centigrade; differential detector set temperature, 40+/-5 degrees centigrade; and injection volume, 20[Mu]l. The detection method of glucose related substances in the acetate compound electrolyte injection has the beneficial effects of effectively separating the acetate and the glucose degradation products, optimizing the process and improving the product quality and safety.

The invention discloses a preparation method of a platiniridium/carbon-electro catalyst by using microwave synthesis. The preparation method comprises the following steps of: evenly distributing nanometer carbon carriers in ethylene glycol solution containing both platinum metal salt and iridium metal salt at the same time, wherein the concentration of the platinum salt and the iridium salt is 0.001 to 0.01 mol/L; adding sodium acetate as a stabilizer, wherein the concentration of the sodium acetate in the resulting solution is 0.005 to 0.03 mol/L; then heating the well-distributed mixture of the nanometer carbon carriers and the metal salt ethylene glycol solution for 2 to 4 minutes by microwave radiation, and then filtering, washing and drying to obtain the platiniridium/carbon-electro catalysts. The atomic composition ratio of a platinum iridium alloy is PtxIry, wherein x is 0.1 to 1, and y is 0.1 to 1. The invention has the advantages that the nano-particles of the platinum iridium alloy, which are loaded on the surfaces of the carbon carriers, have small grain diameter averagely from 3 to 4 nm, and the grain diameter distribution is narrow, and the loading capacity of the alloy nano particles on the surface of the carbon carrier is 5% to 30%. The invention also has the advantages of high speed, simple process, high efficiency and energy saving. The platiniridium/carbon-electro catalyst is widely used in the field of electrochemical energy conversion.