2198results about How to "Mild response" patented technology

The present invention relates to a novel enzymatic bleaching system, including at least one oxidase and at least one perhydrolase, body care agents, hair shampoos, hair care agents, mouth-, tooth- or denture care products, cosmetics, therapeutics, textile detergents, cleaning compositions, rinsing agents, textile detergents for automatic washing machines, hand detergents, hand dishwashing agents, automatic dishwasher agents, disinfectants and agents for bleaching or disinfecting filter media, textiles, hides, paper, skins or leather, comprising the novel enzymatic bleaching system, as well as uses of the novel enzymatic bleaching system and this composition.

The invention discloses an oxydol etching solution for copper-molybdenum alloy films. The etching solution is free of fluorides, and comprises the following main components in percentage by weight: 1-35% of hydrogen peroxide, 0.05-5% of inorganic acid, 0.1-5% of hydrogen peroxide stabilizer, 0.1-5% of metal chelator, 0.1-5% of etching additive, 0.1-5% of surfactant, 0.1-5% of defoaming agent and the balance of deionized water. The etching solution has the advantages of no environment pollution, mild and controllable reaction, proper cone angle after etching, small CD loss, favorable defoaming property and higher overall performance, and lays foundation for high-precision processing.

The invention belongs to the technical field of carbon fiber materials, and particularly discloses a molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material and a preparation method therefor. The molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material is prepared by growing a molybdenum disulfide nanosheet on a nitrogen-doped carbon fiber with a three-dimensional network structure in situ by taking molybdenum salt and sulfosalt as precursors; A preparation process for the molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material comprises: preparing the nitrogen-doped carbon fiber through in-situ oxidization-reduction reaction, freeze-drying and high-temperature carbonization; and growing the molybdenum disulfide nanosheet on the nitrogen-doped carbon fiber in situ through a one-step solvothermal method. According to the nitrogen-doped carbon fiber prepared by the preparation method, the wettability of the carbon fiber and a solvent is improved, and more active sites are provided for growth of inorganic particles; and moreover, the electrical conductivity of the carbon fiber is greatly improved, so that the migration rate for electrons in an electro-catalysis hydrogen-evolution process is increased. The molybdenum disulfide nanosheet / nitrogen-doped carbon fiber hybrid material prepared by the preparation method can be used as an ideal high-performance catalyst material and can be used for the electro-catalysis hydrogen-evolution field.

The invention provides a modified urea-formaldehyde resin adhesive low in formaldehyde residue and a production method thereof. The modified urea-formaldehyde resin adhesive is characterized by being prepared from the following raw materials in parts by weight: 100 parts of modified urea-formaldehyde resin, 20-25 parts of reinforcing agent and 0.1-0.2 part of defoamer, wherein the reinforcing agent is any one or a composition of several of white carbon black, titanium dioxide, calcium carbonate and kaolin having the particle size greater than 300 meshes; the defoamer is polydimethylsiloxane or tributyl phosphate. The formaldehyde residue of the modified urea-formaldehyde resin adhesive provided by the invention is less than 0.1 mg / L; the modified urea-formaldehyde resin adhesive is used as an adhesive for an artificial board; as the modified urea-formaldehyde resin adhesive is low in release amount of formaldehyde, the health of customers is protected.

The invention relates to a preparation method of a porous sodium acrylate super absorbent resin. The preparation method comprises the following steps: an aqueous solution containing 30 to 45 wt% of acrylic acid monomers with a neutralization rate of 60 to 90 mole%, a cross linking agent, a porogenic agent, and a polymerization initiator are polymerized together under nitrogen protection; and porous particles are prepared through preparing granulums with diameters of 2 to 10 mm from hydrogel prepared through polymerization, and adding the surface cross linking agent and an inorganic filler to carry out surface processing. The preparation method of the invention allows continuous production to be realized, productivity to be improved, manpower to be decreased, a problem of slow imbibition to be solved, drying period to be substantially decreased, product performances to be substantially improved, the qualified rate of products to be high, reaction to be mild, and three wastes to be less.

The invention relates to a combined treatment method for sodium chloride-containing wastewater generated in dressing and smelting of rare earth. According to the method, a series of desalination and concentration treatments such as deoiling, neutralizing, homogenizing, aeration, flocculation, ultrafiltration, nanofiltration, reverse osmosis, electroosmosis and MVR (mitral valve replacement) concentration are carried out on the wastewater, so that recyclable purified water is obtained; ammonium bicarbonate is added into the sodium chloride extracted from the wastewater, so that the sodium salt can be converted and regenerated into sodium bicarbonate, sodium carbonate and ammonium chloride products for dressing and smelting of the rare earth. According to the method, the recovery rate of the wastewater is high, the effluent quality is stable, the conversion rate of the sodium salt is high, and no three wastes are discharged; production equipment is compact, simple to operate, and easy to realize automation control; the problem that the sodium chloride-containing wastewater and other similar industrial wastewater generated in dressing and smelting of rare earth are difficult to recycle is solved.

A process technology using enzymolysis method to extract leftover fish oil from fish processing comprises the following steps: preliminary treatment, in which the leftovers from the fish processing are cleaned and minced; protease hydrolysis, in which neutral protease and papain are hydrolyzed simultaneously; oil-water separation, in which hydrolysate is centrifugally filtered to remove residues, and filtrate undergoes oil-water separation via a centrifuge, thereby obtaining the fish oil and hydrolyzed protein; and fish oil refinement, in which refined fish oil can be obtained after the fish oil is degummed, depickled, decolored and deodorized. The leftovers from the fish processing can be hydrolyzed with the proteases to destroy the associative relation of protein and fat, thereby releasing axunge which undergoes oil-water separation by the tubular centrifuge to obtain the fish oil with high quality, and meanwhile, the protein therein can be fully utilized to produce hydrolyzed protein, so as to change wastes into valuables and synthetically and efficiently utilize the resources of the fish and the processing leftovers.

The present invention discloses rod-shaped magnesia alumina hydrotalcite-like compound (HTlc) as one new shaped hydrotalcite-like compound. The rod-shaped magnesia alumina hydrotalcite-like compound has the crystal structure of hydrotalcite and chemical expression of [MII(1-x)MIIIx(OH)2]x+[An-x / n]x-mH2O, where, MII and MIII are bivalent and trivalent metal cation separately, An- is interlayer anion, x is the molar fraction of MIII in HTlc, m is the molar fraction of interlayer crystalline water. It is prepared through a traditional co-precipitation process under the induction of soft template or shape regulating agent sodium stearate. It has simple preparation process and low cost, and may be used as rubber and plastic additive, fire retardant, pesticide release controlling agent, etc.

The invention discloses a method for preparing a high-temperature-resistant super-hydrophobic coating in situ. The method comprises the following steps: (1) conducting in-situ copolymerization of organosilicon monomers and nano silicon dioxide particles; (2) preparing sol nano particles; (3) preparing a coating solution; (4) preparing a super-hydrophobic surface; (5) performing thermal treatment on a coating. The method solves the problems of small adhesive force, complex technology, high cost, expensive raw materials and the like of the conventional super-hydrophobic coating. The contact angle between water and the super-hydrophobic coating prepared in the invention is 150-160 degrees, the rolling angle is smaller than or equal to than 5 degrees, and the adhesive force can reach the first grade; the super-hydrophobic coating can keep a super-hydrophobic property even after being heated at 450 DEG C, and has unique properties of self cleaning, corrosion resistance and super hydrophobicity. The method is simple in process, and convenient to operate,. The super-hydrophobic coating is suitable for large-area construction, and has a potential and wide application value in various fields such as the industry, construction, national defense and medicine.

The present invention discloses a plant polyphenol modified polymer membrane as well as a preparation method and application thereof, in particular relates to the field of modified polymer membranes with anti-fouling properties. In the prior art, due to low surface energy of the polymer membrane, the polymer membrane is susceptible to contamination with proteins, oils and the like and causes a series of temporary or permanent pollution problems. The polymer membrane provided by the invention utilizes the super-strong adhesive ability of plant polyphenols and the coordination of polyphenols andmetal ions to build a hydrophilic coating on the surface of a hydrophobic polymer membrane. The polymer membrane provided by the invention has the advantages of simplicity, high efficiency, mild reaction condition and strong practicability. The controllable hydrophilic modification of a hydrophobic polymer can be realized by changing the conditions of the dip-coating time, the concentration of aplant polyphenol mixed solution, the pH, the temperature and the like, and a high permeation flux can be maintained in the course of cross-flow continuous work, so that the polymer membrane has a verygood application prospect in the field of water treatment. The invention also opens up an effective way, which is simple and easy to operate and has strong universality, for modification of polymer membranes under mild conditions.

The present invention discloses the preparation process of Linezolid, and the preparation process includes the following steps: condensation of morpholine and 3, 4-difluoro nitrobenzene; reduction into 3-fluoro-4-morpholinyl aniline under the catalysis of Fe, and acylation with phosgene into 3-fluoro-4-morpholinylphenyl isocyanate; cyclization with (R)-butyl glycidate to produce (R)-N-(3-fluoro-4-morpholinylphenyl)-oxazolone-5-methyl alcohol; and further conventional synthesis steps. The present invention has simple technological process, mild reaction condition, cheap catalyst and low production cost, and is favorable to industrial production.

The invention discloses a method for preparing a polypyrrole coated bacterial cellulose nanometer electric-conduction composite material by utilizing bacterial cellulose as a template; impurity removal is carried out on protogenetic dynamically-fermented bacterial cellulose nanometer fiber, so as to obtain moist bacterial cellulose after pretreatment; the moist bacterial cellulose is arranged in deionized water for uniform dispersion; dimethylformamide and pyrrole monomers are added and stirred to enable the pyrrole monomer to be fully dispersed into a bacterial cellulose network; and a mixed solution of oxidant and doping agent is added for carrying out in-situ oxidation polymerization, and an obtained crude product is washed by acetone (ethanol), deionized water and hydrochloric acid solution sequentially and repeatedly, and then is frozen and dried, so as to obtain a finished product. The nanometer electric-conduction composite material obtained by the invention has higher electric conduction efficiency, lower cost, mild reaction and low toxicity.

The invention discloses a novel and large-scale preparation method of nano-cuprous oxide. The method comprises the steps of: fully dissolving copper salt and an organic protective agent in a dissolvent; gradually warming to 20-70 DEG C; adding a reducing agent into a reaction system after the temperature is stabilized; reacting for 20-30min by continuously stirring; gradually cooling; standing the cooled solution and centrifuging; and repeatedly washing by alcohol, deionized water and acetone sequentially in sequence to obtain stable cuprous oxide. The method is simple in technology, simple in operation, moderate in reaction, short in reaction time, and high in efficiency, thereby being suitable for large-scale production; the product is good in performance, the grain size of the nano-cuprous oxide is less than 20nm, and the product has good secondary dispersibility in various oil agents; the method is low in preparation cost, low in energy consumption, and free of the generation of harmful wastes, and meets the modern production requirement of 'green protection, environment protection and energy saving'.

The invention discloses a method for preparing graphene magnetic nanometer composite materials composed by graphene and ferroferric oxide (Fe3O4), which comprises the steps that 1 magnetic nanoparticles are prepared; 2 decorated magnetic nanoparticles are prepared; 3 oxidized grapheme reacts with the decorated magnetic nanoparticles, thereby obtaining oxidized graphene magnetic nanometer composite materials; and 4 the oxidized graphene magnetic nanometer composite materials are restored to obtain graphene magnetic nanometer composite materials, and the graphene magnetic nanometer composite materials can be used to monitor and control polycyclic aromatic hydrocarbon pollutants. The graphene magnetic nanometer composite materials composed by the method has the advantages of mild reaction, simple operation, convenient separation, high synthetic security and small environment pollution and the like.

The invention belongs to the technical field of graphene preparation, and discloses a method for preparing graphene by using agricultural and forestry waste biomass as a carbon source. The method specifically includes the following steps: (1) Take the pulverized agricultural and forestry waste biomass, add it to a reaction kettle filled with water, undergo a hydrothermal reaction, cool to room temperature after the reaction, and then filter, wash, and dry to obtain a solid biochar; (2) mix the alkali with the biochar obtained in step (1), grind it sufficiently to make it evenly mixed, and heat and calcinate in the presence of protective gas; (3) use acid to prepare the sample after calcining in step (2) Soaking in liquid to remove by-products in the reaction, and then filtering, washing the obtained solid with water until the washing liquid is neutral, and then drying to obtain few-layer graphene. The method has the advantages of simple process, high yield, mild reaction conditions, simple required instruments and equipment, no pollution to the environment, using agricultural and forestry waste biomass as raw materials, greatly reducing production costs, and easy to realize industrial production.

The invention relates to a synthesis method of an alkaline earth metal vanadate micro / nano material by utilizing microwave radiation. According to the method, with an alkaline earth metal salt and ammonium metavanadate as the raw materials and distilled water as a solvent, the alkaline earth metal vanadate micro / nano material is prepared in a microwave radiation heating mode in the presence of a structure directing agent. The synthesis method is characterized in that: the microwave heating efficiency is high, and the phase and morphology of the product are effectively controlled through the adjustment and control of the raw material properties or the structure directing agent, ultimately the high-efficiency functional nano material is acquired; and the synthesis method has the significant advantages of no temperature and concentration hysteresis, high operability, mild reaction conditions, simple process, and the like and the microstructure of the product is controllable. The invention also provides valuable experience for the application of the metal vanadate micro / nano material in the fields of energy storage and conversion, sewage treatment, photocatalysis, biomedicine, etc.

The invention discloses a preparation method of even and stable nano-silver water solution, which comprises the steps of: crushing, filtering, separating, purifying and diluting plant leaves to obtain plant leaf extract water solution; mixing the obtained plant leaf extract water solution with amino-terminated hyperbranched polymer aqueous solution to obtain plant leaf extract composite solution; repeatedly freezing and unfreezing to obtain plant leaf extract dispersion liquid; and after that, adding silver-ammonia solution into the obtained plant leaf extract dispersion liquid, and mixing to obtain the even and stable nano-silver water solution with the particle size of 1-100nm. The plant leaf extract is adopted as catching agent and reducing agent of silver ions, so that the method is wide in material sources, mild in reaction, safe and environment-friendly; and the prepared nano-silver water solution is good in stability and small in nano-silver particle size, and has the characteristic of high antibacterial efficiency, thus being widely applied to the fields such as electronics, textile, catalysis, medical material, medical health, etc.

The invention discloses a novel compound and a preparation method and use thereof. The novel compound is represented by a formula A, wherein R is selected from THP (trtrahydropyranyl), trialkyl silicon-base, acetyl, benzoyl and biphenyl formoxyl.

The invention relates to a preparation method of a hollow silicon dioxide nanomaterial. According to the preparation method, with carbon nanospheres as a hard template, tetraethoxysilane (TEOS) as a silicon source, water as a solvent and cetyl trimethyl ammonium bromide (CTAB) as a structure-directing agent, the hollow SiO2 nanomaterial which is even in appearance and folded in surface can be formed after residual organic matters such as carbon spheres and CTAB are removed by use of subsequent heat treatment. A TEM picture indicates that the SiO2 nanomaterial prepared by use of the method has a hollow structure and is about 20 nanometers in wall thickness and about 200 nanometers in grain size. The hollow SiO2 nanomaterial prepared by use of the method has potential application prospect in the fields such as biomedicine.

The invention discloses an etherified-starch-grafted-copolymer super absorbent resin and a preparation method thereof. The preparation method includes: subjecting starch serving as raw materials to double etherification, namely cationization and carboxymethylation under the action of etherifying agents; using prepared etherified starch for graft copolymerization; and washing, drying, crushing and performing surface treatment for an etherified-starch grafted copolymer, so that a white transparent granular product is obtained. A molecular chain of the super absorbent resin includes a carboxylic acid group and a quaternary ammonium group which are synergistic, so that the super absorbent resin is more complete and uniform in structure, an excellent network structure is more easily formed, salt tolerance of the copolymer is improved, and further, the super absorbent resin is superior in application performance. The super absorbent resin has diversified hydrophilic functional groups such as carboxymethyl, sulfonyl, quaternary ammonium group and acylamino, the water absorbency of the super absorbent resin is 700-1400g / g, and the saline water absorbency is 80-170g / g.

The invention discloses a preparation method of a spinel-type spherical high-entropy oxide material for a lithium ion battery anode material and belongs to the field of lithium ion battery anode materials. The preparation method integrates chemical reduction and low temperature thermal treatment and particularly includes: with chlorides, sulfates, nitrates, carbonates, acetates and oxalates of cobalt, chromium, copper, iron and nickel being metal sources and sodium borohydride and sodium hydrosulfite being reducing agents, calcining the products, subjected to a redox reaction, in a device at 300-500 DEG C to obtain the target product. Through liquid-phase burdening, it is guaranteed that the raw materials are blended at molecular level, thus achieving stoichiometric ratio of the product; meanwhile, the method is simple in process, is gentle in reactions, is short in time and high in efficiency, and has no special demands on calcining equipment. The high-entropy oxide powder is high inpurity, is small in particle size and has high initial discharge capacity and great cycle performance.

The invention relates to a preparation method of alkyd resin. The preparation method comprises the following specific steps: (1) adding neopentyl glycol, trihydroxymethyl propane, phthalic anhydride, hydrogenated phthalic anhydride and antioxidant to a reaction container, and heating to carry out melt esterification on the materials at the temperature of 200-240 DEG C; (2) when esterification is carried out to an acid value being 40-45 mgKOH / g, cooling to 120-160 DEG C, and adding short-chain synthetic fatty acid and an aliphatic hydrocarbon solvent; (3) heating to carry out reflux esterification at the temperature of 180-200 DEG C, and diluting with acetic acid ester organic solvent when the acid value is smaller than or equal to 8 mgKOH / g; and (4) cooling to 100 DEG C and filtering to obtain alkyd resin. The paint prepared from the alkyd resin obtained in the invention and nitrocellulose has the characteristics of rapid drying, high hardness, good fullness, good adhesion force, and good water resistance.

The invention discloses a preparation process for 2-Chloronicotinic acid. In the prior art, the disadvantage is that the overdosed catalyzer is used and has a bad effect, the oxidation yields are very low; during the chlorination reaction, POCl3 can make chloro-substitutions on a plurality of positions of nicolinamide- N- oxido, which leads to that the chloro-substitution products on 2-position have low yields. In the invention, with the existence of acetyl pyruvic molybdenum, the 3-Pyridinecarbonitrile takes water as the solvent and is dripped in 20 to 30 percent of H2O2, and then is made a heat preservation to realize a full oxidation reaction; under the anhydrous reaction and with the positive pressure protection of nitrogen, the acquired nicolinamide- N- oxido is cooled between minus 10 and 10 DEG C to be diluted by the halohydrocarbon solvent, and then is dripped in the organic base, and is reacted with the chlorination reagent under the action of phenyl dichlorophosphate; the strong alkaline solution is used to make a dehydration reaction with the acquired 2-chloro-3-cyanopyridine. The invention takes the acetyl pyruvic molybdenum as the catalyzer and oxidizer, has high oxidation yields; adopts the organic base as the acid-binding agent, makes chloro-substitutions between the chlorination reagent and the nicolinamide- N- oxido, and has above 85 percent of chloro-substitution yields.

The invention relates to a method for continuously synthesizing arylboronic acid ester by utilizing a microreactor, which belongs to the technical field of green organic synthesis application. The method comprises the following steps of: preheating substituted arylamine, tert-butyl nitrite, bisdiborane in a continuous-flow micro-channel reactor system by using substituted arylamine, acetonitrile, tert-butyl nitrite and bisdiborane as starting materials; and mixing the substituted arylamine with the bisdiborane and then reacting the obtained mixture with the tert-butyl nitrite, wherein in the reaction, the molar ratio of the substituted arylamine to the bisdiborane is (1:0.5)-(1:1.25), the molar ratio of the substituted arylamine to isoamyl nitrite is (1:1.1)-(1:1.5), the reaction temperature is 60 DEG C-120 DEG C, the reaction time is 50 seconds-3600 seconds, and the effective conversion ratio of the substituted arylamine is 50%-90%. The continuous-flow microreactor, which is capable of strengthening the mixing effect, the mass transfer effect and the heat transfer effect, is especially suitable for carrying out homogeneous reaction of the method. Moreover, the method has the characteristics of stable temperature control, safe process and less waste material.

The invention relates to a synthetic method for preparing colorless transparent alkyl polyglucoside, which comprises the following steps: adding glucosum anhydricum or glucose containing one crystal water and aliphatic alcohol with 8 to 20 carbon atoms into a reaction kettle in the weight ratio of 1:2.8-6.5; adding a composite catalyst containing dodecyl benzene sulfonic acid under the agitation of an emulsifying agitator; after undergoing a reaction for 4 to 8 hours at a temperature of between 80 and 120 DEG C under the vacuum condition of between -0.093 and -0.098 MPa, reducing the temperature to between 70 and 80 DEG C; adding neutralizer alkaline hydroxide, adjusting the pH value between 6 and 8 to obtain a flaxen mixture of alkyl polyglucoside and the aliphatic alcohol; and performing dealcoholization and blanching on the mixture to obtain a product of the colorless transparent alkyl polyglucoside. The method has a simple process and convenient operations. The process of the method not only can use the glucosum anhydricum, but also can use the glucose containing one crystal water, has a low cost and good quality; and the method adopts the composite catalyst, has a mild temperature, smooth water yielding and no phenomenon of foam overflow.

The invention discloses hyperbranched polyurethane containing active amino groups and a preparation method thereof. The preparation method comprises the steps that firstly, polyether polyol and diisocyanate are mixed and stirred to react; secondly, a catalyst is added, organic aprotic solvent serves as solvent, and a small-molecule chain extender is added for chain extension after the reaction is performed for a period of time; thirdly, an end-capping reagent is added for partial end capping, so that linear polyurethane pre-polymers are obtained; afterwards, amino-teminated hyperbranched polymers and the linear polyurethane pre-polymers are mixed and stirred to react, so that the hyperbranched polyurethane is obtained. Hyperbranched polyurethane resin obtained by synthesizing the hyperbranched polyurethane contains a lot of active amino groups and imino groups, so the sanitary property of a polyurethane film can be improved, and the dyeing property of the polyurethane film can also be improved.

The invention provides a process method for separating Mg and Li from salt lake bittern and simultaneously producing magnesium-aluminum layered double hydroxide (MgAl-LDH) and lithium-aluminum layered double hydroxide (LiAl-LDH) by a reaction-separation combined technology. The process method comprises adding an Al salt in bittern, carrying out coprecipitation and crystallization on the bittern and alkali lye for coprecipitation to obtain an MgAl-LDH solid product and a filtrate, carrying out evaporation concentration on the filtrate to obtain Li-rich bittern, adding an Al salt into the Li-rich bittern, carrying out coprecipitation on the mixed Li-rich bittern and alkali lye, carrying out separation to obtain a LiAl-LDH solid product and a filtrate, carrying out evaporation concentration on the filtrate and recycling the concentrate. Mg in bittern can form MgAl-LDH and the MgAl-LDH is separated at first so that the traditional method for separating Mg and Li from a high Mg / Li ratio solution has high difficulty. Through the reaction-separation combined technology, Mg and Li resources in salt lake bittern are separated and simultaneously, MgAl-LDH and LiAl-LDH functional material production is realized. The process method realizes salt lake resource separation and produces a high added value functional material.

The invention discloses a biomass carbon-loaded nano zero-valent iron material as well as a preparation method and application thereof. The method concretely comprises the following steps: adding walnut shell biomass carbon into an FeCl3.6H2O solution, mixing for 20-30 hours at the room temperature, then dropwise adding an NaBH4 solution into the mixture under the protection of inert atmosphere, and continuously stirring for 0.5-1 hour after adding; finally, carrying out suction filtration, taking filter residue, washing and drying to obtain the biomass carbon-loaded nano zero-valent iron material. The preparation method is simple; in the material obtained by the method, zero-valent iron particles are small in particle sizes, even in distribution and can not easily agglomerate, so that the biomass carbon-loaded nano zero-valent iron material can be applied to repairing pollutants such as organic matters and heavy metal in underground water and soil.

The invention discloses a synthetic method of cyclosulphate. A peroxysulfate solution is pre-synthesized through sulfuric acid and hydrogen peroxide, then under existence of an organic solvent, a metal inorganic compound and a catalyst, the peroxysulfate solution is dropwise added to generate a catalytic oxidation reaction with cyclosulfite, after the reaction is completed, salt residue is filtered out, still standing for layering is conducted, an organic layer is taken to be distilled, concentrated and purified, and a cyclosulphate high-quality product is obtained. According to the syntheticmethod of the cyclosulphate, the cheap sulfuric acid and hydrogen peroxide are used as the raw materials, the peroxysulfate solution is prepared to conduct catalytic oxidation on the cyclosulfite, onthe one hand, the reaction is mild, control is easy, and the reaction conversion rate is high; on the other hand, the evaporation capacity of water is small, energy consumption is low, generated wastewater is less, and a synthetic process is more environmentally friendly; and the prepared cyclosulphate is few in impurity, high in purity and wide in market prospect.