57 results about "Hydrogen peroxide" patented technology

This invention relates to one kind of method to use abandoned grease to produce epoxy plasticizer, its characteristic lies in: Use the abandoned grease as raw materials, by pretreatment, the obtained glycerin ester to ester exchange respond with the methyl alcohol under alkali catalysis, then get fatty acidmethyl ester, then again with the peroxide organic acid, which is the reaction products of hydrogen peroxide and organic acid, to directly epoxy respond, get the raw epoxy fatty acid methyl ester, then wash off the acid by water, and obtain the epoxy fatty acid methyl ester by distillation and dehydration product. The raw material cost of this invention is low, originates broadly, conforms to the green environmental protection requirement, and the craft is simple, does not pollute environment, so it is the good substitute of petroleum product.

The method for preparing active carbon from bamboo raw material includes the following steps: (1). mao bamboo and waste produced by making bamboo wares are used as raw material, through cutting and screening, and screening bamboo scraps or screening bamboo scraps and making them form; (2). low temp. pyrogenic distillation carbonization of bamboo raw material in carbonization furnace, its pyrogenic distrillation carbonization temp. is 200-600 deg.C; (3). in the presence of micro oxygen placing the carbonized bamboo raw material into activating furnace and making activation by using superheatedsteam at high-temp., activating temp. is 400-850 deg.c; and (4) breaking or water washing activated active carbon, drying, sorting and sieving to obtain the invented product. Before carbonization thebamboo raw material can be soaked in mixed solution formed from zinc chloride and hydrogen peroxide or mixed solution formed from phosphoric acid and hydrogen peroxide. Its product not only possessesthe advantages of all the wooden active carbons, but also its methylthionine chloride decolouring power can be raised by 20%.

The invention provides a CDs-Pt nanomaterial with catalase catalytic properties. The CDs-Pt nanomaterial shows good enzyme-like catalytic activity in an acetate buffer solution using TMB as a substrate. The CDs-Pt nanomaterial provided by the invention belongs to the field of catalytic material and mimic enzyme research, and the obtained CDs-Pt nanomaterial has the characteristics that carbon quantum dots are modified by precious metal platinum, the synthetic steps are simple, the material scale is small, and the CDs-Pt nanomaterial has good dispersion in a reaction system, and has broad prospect in actual application such as hydrogen peroxide detection and glucose detection.

The invention relates to a preparation method for a super-hydrophobic/super-oleophylic loofah sponge fiber and an application thereof. The method comprises the following steps: pretreating loofah sponge fiber with sodium hydroxide and hydrogen peroxide and standing by; taking a certain amount of polyurethane adhesive and gas-phase nano-silica and adding into an acetone solvent; ultrasonically dispersing for 2-4 hours, thereby acquiring an acetone dispersion liquid; adding the pretreated loofah sponge fiber into the acetone dispersion liquid and ultrasonically dispersing for 2-10 hours; and drying in an oven, thereby acquiring the super-hydrophobic/super-oleophylic loofah sponge fiber used for effectively separating oil or organic solvent from water mixture. The preparation method provided by the invention is simple and quick; the used raw materials are economical, easily acquired and easy to degrade; the virulent fluorine-containing surfactant is not required; the prepared super-hydrophobic/super-oleophylic loofah sponge fiber has higher stability, excellent super-hydrophobic property and efficient oil water separation capacity; and besides, the prepared super-hydrophobic/super-oleophylic loofah sponge fiber has excellent strong acid resistance, strong base resistance, high salinity resistance, high temperature resistance and extensive social benefit and economic benefit.

The invention provides a preparation method of a paper-graphite-CoPd thin film electrode. The preparation method comprises the following steps: (1) uniformly coating ordinary paper with a mixture of graphite and clay; (2) retaining the paper coated with the graphite for 20-30 min under the voltage of 1.0V, activating the coating graphite, and then performing electro-deposition on Co for 120-150 min under the voltage of -0.8V to obtain a paper-graphite-Co thin film electrode; and (3) enabling the paper-graphite-Co thin film electrode to stand in 0.8 mmol/L<-1> of PbC12 solution for 1-3 min to obtain the paper-graphite-CoPd thin film electrode, namely a graphite coated paper loading CoPd catalyst. According to the method, with pencil coated paper, Co is subjected to electro-deposition on the surface of conducting paper coated with graphite, and then partial Co is replaced with Pd to prepare the graphite coated paper loading CoPd catalyst, so that the electroreduction performance of hydrogen peroxide is improved. The preparation method overcomes the defects of high current collector cost, hydrogen peroxide decomposition and the like, and solves the problem that hydrogen peroxide based full cells are bad in cathode activity.

The invention relates to a method for preparing a ferric vanadate-graphene negative electrode composite material. The method comprises the following steps: dispersing sheet layers of graphene, forming ferric vanadate on the surface of graphene, growing and performing after-treatment on the ferric vanadate attached to the surface of graphene. According to the method disclosed by the invention, the sheet layers of graphene are dispersed, so that the ferric vanadate is uniformly attached to the surface of the graphene. Therefore, the ferric vanadate-graphene negative electrode composite material is uniform in texture and high in dispersity, the performance is greatly improved, and hydrogen peroxide is added into graphene turbid liquid, so that reaction is carried out on the surface of the uniformly dispersed graphene, functional groups are generated, a negative ion state is formed, ferrous iron ions are easily adsorbed, the reaction rate is accelerated, the adsorption rate is increased, and the ions react with vanadate on the graphene surface so as to form uniform particles. The ferric vanadate-graphene negative electrode composite material disclosed by the invention has low discharge voltage and extremely high discharge capacity, the raw materials are wide in source, and the cost is reduced.

The invention relates to a germicide for treating fruit tree putridness, which is prepared by mixing 200-400 portions of 25% hydrogen peroxide, 2-5 portions of glacial acetic acid, 5-10 portions of Chinese medicinal herb extract, 5-10 portions of ultramide and 0.01-0.05 portion of indoleacetic acid, wherein the Chinese medicinal herb extract can be capsule of weeping forsythia, flavescent sophora root, or spatholobus stem extract.

The invention discloses a calcium carbonate compound type flame-retardant foaming agent. The technical scheme of the foaming agent is characterized in that the calcium carbonate compound type flame-retardant foaming agent comprises light calcium carbonate, attapulgite clay powder having an air purification function, hydrogen peroxide, magnesium hydrate, sodium alcohol ether sulphate, superfine polyving akohol powder, dimethicone and water. Calcium carbonate compound type flame retardant foaming agent paste ingredients are stirred into a paste, and then the ingredients of the calcium carbonate compound type flame-retardant foaming agent are stirred into a finished product of the calcium carbonate compound type flame-retardant foaming agent. After the calcium carbonate compound type flame retardant foaming agent is stirred with water at a high speed, porous foamed slurry is formed and can rapidly isolate an inflammable material from being contacted with air, and the purposes of inflaming retarding and extinguishment are achieved; a product produced with the calcium carbonate compound type flame-retardant foaming agent not only has the effects of inflaming retarding, heat preservation, thermal insulation and sound insulation, but also has the air purification function; and the calcium carbonate compound type flame-retardant foaming agent is suitable for producing inflaming retarding and fire-extinguishing products, lightweight boards, lightweight walls and noise reduction products.

The invention relates to a method for preparing high-purity nanometer titanium dioxide by electrolyzing titanium trichloride. Specific to the defects of complex technological requirement and low purity of products of the present method for preparing nanometer titanium dioxide, the invention provides a method for preparing high-purity nanometer titanium dioxide by adopting electrolysis method with simple production technology and high purity of products. The method provided by the invention is finished in the following manner: a device for preparing the high-purity nanometer titanium dioxide by electrolyzing titanium trichloride comprises an electrolytic tank, electrolyte, an exhaust pipe and an electrode, wherein a titanium-based platinum electrode is adopted as anode; a graphite electrode is adopted as cathode; and a titanium trichloride solution is taken as the electrolyte. During an electrolytic process, the concentration of the titanium trichloride in the electrolyte is kept relatively stable and hydrogen peroxide is continuously added in the electrolytic process. During the electrolytic process, partial electrolyte is extracted and is subjected to centrifugal separation, thereby obtaining precipitate and liquid supernatant; the liquid supernatant is added into the electrolytic tank again and participates in electrolysis; and the precipitate is dried, thereby obtaining the high-purity nanometer titanium dioxide powder.

The present invention relates to a method for preparing tungsten oxide and tungsten powder from scheelite. The method uses the scheelite as a raw material and comprises the following steps: (1) conducting leaching reaction; (2) conducting filtering and washing; (3) conducting hydrogen peroxide extraction-decomposition to extract tungsten; (4) conducting hydrogen peroxide multiple dissolution-decomposition to purify tungstic acid; (5) pure tungstic acid calcination to prepare tungsten trioxide; and (6) conducting peroxotungstic acid solution spraying pyrolysis to prepare tungsten oxide and tungsten powder. The method only consumes cheap and easily available sulfuric acid, greatly reduces the decomposition cost of the scheelite and uses sulfuric acid to decompose; decomposed residues are gypsum; the gypsum can be used as building materials; the method does not produce dangerous waste alkali cooking residues, greatly reduces production and operation costs of enterprises, uses hydrogen peroxide as an extractant of tungstic acid, does not produce ammonia nitrogen wastewater, eliminates the technology of producing the ammonia nitrogen wastewater for many years in tungsten smelting, greatly reduces environmental protection costs, directly produces various tungsten end products and tungsten powder, and improves added value of products of the tungsten smelting enterprises.

Cross-linked ampholytic polymers that may be used as rheological modifiers, and/or absorbent gelling materials are disclosed. The polymers may be storage stable in aqueous compositions comprising soluble salt, and/or an oxidizer, such as hydrogen peroxide.

The invention relates to phosphorus-containing vegetable oil based flame-retardant polyol and a preparation method and application thereof. The preparation method of the phosphorus-containing vegetable oil based flame-retardant polyol comprises the following steps: carrying out epoxide reaction on tung oil methyl ester with hydrogen peroxide and methanoic acid under the catalyzing effect of a home-made phase transfer catalyst at first to prepare multi-functionality-degree epoxidized tung oil methyl ester; reacting the obtained epoxidized tung oil methyl ester with reactive-hydrogen-containing DOPO (DOPO belongs to phosphorus-containing phenanthrene ring and heterogeneous ring compound, and the full name of DOPO is 9,10-diamine-9-oxygen heterocyclic-10- phosphaphenanthrene-10-oxide) to obtain the phosphorus-containing vegetable oil based flame-retardant polyol. The obtained polyol is a flame retardant, the synthesized structural flame-retardant vegetable oil based polyol is used in hard polyurethane flame-retardant foam, mechanical strength and flame retardance of the foam are improved, and a preparation process is simple, convenient to operate and easy to obtain. The phosphorus-containing vegetable oil based flame-retardant polyol is compounded with tris( 2-chloropropyl) phosphate, phosphorus-nitrogen synergistic flame retardant effect is good, the use amount of a flame retardant can be reduced, the flame retardant effect is much better than the flame retardant effect of the tris( 2-chloropropyl) phosphate which is used independent, and the oxygen index (LOI) can reach 29%.

The invention discloses a rice secretary type thioredoxin gene, coded proteins thereof and application thereof and aims to provide the rice secretary type thioredoxin gene, the coded proteins thereof and a method for improving antioxidant activities of plants and delaying plant senescence by using the gene. The nucleotide sequence of the rice secretary type thioredoxin gene provided by the invention is a No.1 DNA sequence in a sequence table; and the amino acid sequence coded by the secretary type thioredoxin gene is a No.2 amino acid residue sequence in the sequence table. Experiments show that when the gene is excessively expressed in the rice, hydrogen peroxide content of a plant can be reduced and chlorophyll content can be improved in a normal state or in the presence of salts, so a rice senescence process is delayed. The rice secretary type thioredoxin gene, the coded proteins thereof and the application thereof have important application in aspects of improving the anti-oxidation and anti-aging performance of rice by using molecular breeding.

Disclosed is a method for calculating a ratio of glycosylated hemoglobin with high accuracy by electrochemically detecting the concentration of fructosyl valine or fructosyl valyl-histidine in a sample. Also disclosed is an apparatus for assaying glucose and glycosylated hemoglobin simultaneously. Further disclosed are a method and an apparatus for removing hydrogen peroxide in a sample.

The invention belongs to the technical field of chemical analysis and detection and in particular relates to a near-infrared fluorescence probe for rated quantitative determination on endogenous hydrogen peroxide and a preparation method and application of the near-infrared fluorescent probe. The near-infrared fluorescence probe has a structural formula as shown in the specification. The near-infrared fluorescence probe is applied to rate detection on hydrogen peroxide; in the presence of hydrogen peroxide, a corresponding fluorescence wavelength is conspicuous displaced, then detection and quantification on exogenous and endogenous hydrogen peroxide can be implemented, interference of external detection conditions can be greatly reduced, and the detection precision can be improved. By adopting the compound of the fluorescence probe for rated quantitative determination on hydrogen peroxide, ultraviolet absorption can be also conspicuous changed in the presence of hydrogen peroxide, anddetection can be carried out by using an ultraviolet spectrophotometer and naked eyes simultaneously. As the fluorescence probe, the compound can be applied to detection on levels of hydrogen peroxide inside and outside cells, and the fluorescence probe has very great instruction significances for studying hydrogen peroxide in the mitosis process, and particularly for studying functions of the hydrogen peroxide as a messenger molecule.

The invention discloses a preparation method of a non-woven fabric, and belongs to the field of spinning. Sodium pyrophosphate, glucose, sodium hydroxide, ferrous sulfate and water are sampled, nitrogen protection is adopted, heating and stirring are performed, and then cumyl hydroperoxide and polybutadiene are added and stirred and mixed; a stirring mixture, allyl benzene, methyl methacrylate, epoxypropyl methacrylate and dibenzyl phthalate are obtained to be added into magnesium sulfate, stirring, mixing and drying are performed, a drying object is obtained to be added into polylactic acid to be mixed, and a mixed matrix is obtained; folium eriohotryae and aloe are obtained to be mixed and homogenized, deionized water is added for digestion and suction filtration, a filtrate is obtainedfor centrifuging, a supernate is obtained to be added into a copper nitrate solution to be mixed, and an antibiotic finish solution is obtained; processed linen fiber, a dispersing solution and the antibiotic finish solution are obtained to be soaked and filtered, the linen fiber is taken to be cleaned with deionized water, and linen fiber is obtained; linen fiber, the mixed matrix, polypropyleneand sodium alginate are obtained to be mixed for opening, carding and lapping, the mixture is placed into a needle machine for needling treatment, and hot rolling is performed to obtain the non-wovenfabric.

The invention discloses a preparation method of a phosphatization liquid for steel pipe cold-rolling processing pre-treatment. The phosphatization liquid comprises 22-26g/L of zinc oxide, 84-88g/L of phosphoric acid having a concentration of 85%, 16-20g/L of zinc dihydrogen phosphate, 22-26g/L of monocalcium phosphate, 6-8g/L of nickel sulfate, 4-6g/L of magnesium sulfate, 10-12g/L of tartrate, 4-6g/L of sodium citrate, 12-14ml/L of hydrogen peroxide and the balance water. The preparation method comprises the following steps of 1, mixing zinc oxide and water to obtain paste and carrying out stirring to obtain a uniform mixture, 2, slowly adding phosphoric acid into the zinc oxide paste with stirring until dissolution, 3, orderly adding zinc dihydrogen phosphate, monocalcium phosphate, nickel sulfate, magnesium sulfate, tartrate, sodium citrate and hydrogen peroxide into the solution obtained by the step 2 and carrying out stirring until dissolution, and 4, adding the rest of water into the solution obtained by the step 3 to adjust free acidity to 12-15 and total acidity to 70-90.

The invention relates to the technical field of emergency escape, in particular to a vehicle wading emergency escape device which comprises a device body, the device body comprises an escape box mainbody, a transparent film is fixedly installed at the bottom end of the escape box main body, and a handle is fixedly installed on one side of the escape box main body. A first fixing plate is fixedlymounted in the escape box main body. By arranging a life buoy body, a blocking mechanism, an inflation mechanism, a transmission mechanism and a window breaking mechanism, a worker knocks a vehicle window through a window breaking hammer; meanwhile, a transmission gear is driven by a meshing gear block to rotate, and finally, a first fixing block and an injection pipeline body can move upwards; hydrogen peroxide and manganese dioxide can be subjected to chemical reaction in the life buoy main body, so that the life buoy main body is expanded; a worker can escape from the life buoy main body, the worker can escape safely when fording into water suddenly, and the safety protection on the worker is improved.

The invention relates to a sterilizing, disinfecting and freshness-preserving agent and in particular discloses an environment-friendly sterilizing, disinfecting and freshness-preserving agent and a preparation method thereof. The preparation method comprises the following steps of: (1) preparing a colloidal silver solution; (2) further removing impurities from the colloidal silver solution; (3) adjusting silver ion concentration of an organic mixed silver solution; (4) mixing a hydrogen peroxide solution; (5) removing the organic solution; and (6) adjusting the content ratio of the hydrogen peroxide to the colloidal silver to obtain mixed liquid with the hydrogen peroxide concentration of 450 to 580 g/L and the silver ion concentration of 450 to 500 mg/L. The mixed liquid overcomes the defects that the hydrogen peroxide is unstable and hardly has sterilizing ability under a nearly alkaline environment and the like, enhances the advantages, generates the effect that 'one plus one is more than two', and has a quick and durable sterilizing effect.

The invention belongs to the field of lithium battery recycling and particularly relates to a method for recovering cobalt and nickel from a waste lithium battery. The method comprises the following steps of (1) crushing a positive plate of the lithium battery into powder particles; (2) adding the crushed particles to excessive first strong alkaline solution, stirring until no bubble is generatedand filtering; (3) adding sulfuric acid and hydrogen peroxide to a filter cake and filtering after reaction is ended; (4) heating filtrate in a nitrogen environment, adding the first strong alkaline solution and carrying out suction filtration after the reaction is ended; and (5) washing and drying the filter cake and then detecting the filter cake. Compared with an extraction-reverse extraction process, the method provided by the invention is simple in technological process, relatively low in equipment requirements and high in operability; and after obtained composite hydroxide is washed, thecontent of nickel and cobalt is greater than 50% and the content of manganese is smaller than 2%, so that separation of precious metals, namely the nickel and the cobalt from a low-valence metal manganese is achieved.