292results about How to "Promote oxidation reaction" patented technology

A biosensor that is highly responsive and capable of rapid and highly sensitive quantification of a specific component contained in a sample is provided. The biosensor of this invention comprises: an electrically insulating base plate; an electrode system comprising a working electrode and a counter electrode disposed on the base plate; and a reagent system comprising an oxidoreductase which catalyzes the oxidation reaction of glucose, gluconolactonase and a buffer. The buffer is selected from the group consisting of phthalic acid and its salts, maleic acid and its salts, succinic acid and its salts, phospholic acid and its salts, acetic acid and its salts, boric acid and its salts, citric acid and its salts, glycine, tris(hydroxymethyl)aminomethane, piperazine-N,N'-bis(2-ethane sulfonic acid) and the like.

The invention relates to a balancing lead smelting process for comprehensive resource utilization and a device thereof. The process comprises the following steps: granulating a raw material containing lead and a fluxing agent after proportioning, sending to an oxygen bottom-blown smelting furnace for smelting to produce primary crude lead, lead ash and flue gas of SO2; sending the flue gas of SO2 to a sulfuric acid system for acid making after recovering waste heat by a waste heat boiler and duct collection by a dust arrester installation; adjusting form of the lead ash and adding the lead ash to a blast furnace together with coking coal for reducing smelting to produce secondary and third crude lead; electrorefining the crude lead to obtain refined lead and anode slime, treating and recovering the anode slime to obtain lead, stibium, bismuth, gold and silver metals; and separating slag of the blast furnace from the crude lead and sending to a fuming furnace to recover zinc oxide, the lead, indium and germanium. A system for realizing the process comprises the oxygen bottom-blown smelting furnace, an oxygen lance, an electrically-heated settler, a slag casting device, the waste heat boiler with a vertical ascending segment of membrane wall structure, the blast furnace, the fuming furnace and a ventilating device. The process design and system improvement help realize balancing optimized recovery of Pb, Zn, Au, Ag, Bi, Cu, In, Sb and S elements.

The invention discloses a preparation method for scented tea of a tea tree. The method comprises the following steps: picking; cleaning (with an ultrasonic wave); carrying out enzyme wall-breaking; heating and withering; cooling flowers; carrying out enzymatic fermentation; baking; removing impurities; sterilizing; and packaging. Through the enzymolysis wall-breaking effect, a cell wall of tea tree pollen can be destroyed; nutrition health materials are leached; the functional role is enhanced; meanwhile, tea polyphenol is transformed through withering and fermenting; the bitter taste of the scented tea of the tea tree is relieved; and the taste of the scented tea of the tea tree is improved, so that the preparation method can be widely applied to the field of preparation of the scented tea of the tea tree.

The invention provides a preparation method of polyferric sulfate. The method is that a sulfuric acid aqueous solution and ferrous sulfate are mixed to obtain a mixing solution of which the pH is 0.5 to 1.5; the mixing solution and hydrogen peroxide respectively individually flow through independent flowing channels and then are synchronously poured into a reaction system to react to obtain polyferric sulfate. With the adoption of the method, the oxidizing capacity of hydrogen peroxide can be improved, the rate of converting ferrous ions into ferric ions can be increased, and moreover, ferrous ions and hydrogen peroxide can fully contact and rapidly react; therefore, the problem of decomposing of hydrogen peroxide at a high temperature or strong acid condition in the prior art can be effectively solved, the dosage of hydrogen peroxide can be reduced, the cost input can be decreased, the operation process is simplified, and the reaction time is greatly reduced. The quality of polyferric sulfate prepared by the method meets indicators as specified by national standard on top quality goods; with the adoption of the polyferric sulfate to treat wastewater, the COD of drained water can be stabilized to be less than or equal to 86mg/L, so that the method is applicable to industrial production.

Production of cyclohexanone by cyclohexane liquid-phase oxidation is carried out by oxidation inductive reacting, inducing oxy-gas and mixed oxide liquid with cyclohexanone, cyclohexanol and cyclohexyl-hydrogen peroxide into super-gravity reactor, continuous oxidation reacting for cyclohexanone and decomposing for cyclohexyl-hydrogen peroxide under cyclohyexanone oxidation. It's efficient, has better selectivity and no environmental pollution.

The invention relates to a treatment method for removing nitrogen oxides by virtue of an ozone function. The method comprises the following steps: (1) flue gas containing the nitrogen oxides is introduced into a flue and an ozone adding distributor is additionally arranged; (2) a gas source is introduced into an ozone generator, ozone is generated and diluted and then is mixed in a mixer to obtain ozone diluted uniformly, and the ozone diluted uniformly enters the ozone adding distributor; (3) the ozone diluted uniformly and the flue gas containing the nitrogen oxides are mixed in the ozone adding distributor and are subjected to oxidation reaction, NO in waste gas is converted into high-valent nitrogen oxides and then the high-valent nitrogen oxides enter an absorption tower; and (4) the flue gas is absorbed by the absorption tower and absorption liquid and is purified to obtain tail gas, and the tail gas is exhausted from a chimney. The treatment method for removing the nitrogen oxides has the high efficiency, the low energy consumption and the convenience in use.

The invention discloses an iron-removing and manganese-removing suspended filter material. The iron-removing and manganese-removing suspended filter material is characterized by comprising the following components in parts by weight: 650-700 parts of manganese sand, 80-90 parts of expanded perlite and 20-40 parts of plastic particles; the suspended filter material is prepared by weighing, crushing, uniformly mixing, melting, extruding, granulating and cooling. The iron-removing and manganese-removing suspended filter material has the advantages as follows: (1) the suspended filter material is low in specific weight, is suspended in water, and is conducive to direct exchange contact of water and the manganese sand for sufficient reaction; (2) the expanded perlite is very large in grain space, so that formation of a biofilm is facilitated, and oxidation reaction of iron ions and manganese ions is improved; (3) the iron-removing and manganese-removing suspended filter material improves the backwashing capability and saves water resources; (4) a supporting material is not needed, so that pressure on equipment is reduced and the equipment cost is reduced.

The invention relates to a reaction method for preparing corresponding lactone, hydroxy acid and dicarboxylic acid through cyclic ketone oxidation. The reaction method is characterized by comprising the following steps of: enabling reaction materials which include cyclic ketone, hydrogen peroxide, an entrainer and water to contact under the condition of oxidation reaction in the presence of a catalyst to obtain a product; and continuously adding and extracting the reaction materials and the product in a reaction device, wherein the entrainer generates azeotropism with the water, an azeotrope formed under a reaction condition is continuously removed and separated, the reaction materials and the entrainer are recycled, and the catalyst is a nano beta molecular sieve and/or a metal modified nano beta molecular sieve.

The invention relates to a preparation method of a dendritic TiO2 nanocrystal-loaded Pt-Ce-Cu alloy nanoparticle benzaldehyde photocatalysis material. The preparation method comprises the following steps: preparation of micrometer ilmenite particles with octadecyl trichlorosilane adhered to the surface, preparation of dendritic TiO2 nanocrystal magnetic-assisted precipitate and assembling of Pt-Ce-Cu alloy nanoparticles on the surface of dendritic TiO2 nanocrystal. The prepared dendritic TiO2 nanocrystal-loaded Pt-Ce-Cu alloy nanoparticle material has remarkable selective photocatalysis characteristic for benzyl alcohol catalytic oxidation reaction for production of benzaldehyde.

The invention prepares transparent low-distance and high-distance films by ultrasonic spray thermolysis technique. It uses a technique of ultrasonic spray deposition, and has the characters of large area and high deposition ratio. By improving the film forming device by ultrasonic spray thermolysis, it changes the spout from one point to one slot, which makes gas uniformly ejected on a line. The sample moves at uniform speed in the direction of the vertical spraying slot so that the thickness of the deposited film can be made uniform and consistent. It can be used in preparation of the transparent low-resistance films and transparent intrinsic high-resistance films of solar energy batteries and LCDs.

The invention discloses an industrial wastewater decoloring treatment process. The process comprises the following steps: the pH value of wastewater is adjusted, an adsorption and oxidation reactor filled with adsorption resin is introduced, a lot of chormophoric organics are adsorbed in the resin, when the chroma removal rate is less than 60%, drainage is performed, a liquid-phase oxidant is added in the adsorption resin to perform oxidative decoloration, the resin is activated and regenerated; and after the pH value of the discharged water of the adsorption and oxidation reactor is adjusted, the discharged water enters a catalytic oxidation reactor, the adsorption resin loaded with a transition metal catalyst is filled in the reactor, and the liquid-phase oxidant is added to perform heterogeneous catalytic oxidation decoloration and remove the small molecules and nonpolar chormophoric organics which are difficult to be adsorbed by the adsorption and oxidation unit. By adopting the method, the polar and nonpolar chormophoric organics with wide molecular weight range can be removed and the effects of efficient decoloring and wide applications can be achieved.

The invention discloses an amorphous lanthanum nickelate film composite electrode, and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a lanthanum nickelate target material; (2) pretreating a substrate; and (3) preparing the composite electrode. By preparing the amorphous lanthanum nickelate film, more active sites can be provided; and the amorphous lanthanum nickelate film covers the glassy carbon sheet substrate, so that conductivity can be provided. When the composite electrode covered with the amorphous lanthanum nickelate film is applied to an OER electro-catalysis system, the catalytic activity and durability in an alkaline solution can be effectively improved, and the OER reaction is effectively catalyzed and promoted.

The invention discloses a method for treating selenium-containing wastewater. The method comprises the following steps: adjusting the pH of the selenium-containing wastewater to be 7-9, performing ozone oxidization in an ozone reactor, oxidizing selenious acid radical ions (SeO3<2->) into selenate radical ions (SeO4<2->), then performing aerobic biological treatment, putting the wastewater into a flocculating settling pool, adding a flocculating agent, stirring and performing solid-liquid separation to obtain wastewater subjected to selenium removal. The method disclosed by the invention is high in removal rate of selenium from the wastewater, wide in application range, easy and convenient to operate and particularly suitable for high-concentration selenium-containing wastewater.

The invention relates to an iron, nitrogen and fluoride co-doped titanium dioxide (TiO2) photocatalyst and the application thereof in degrading organic pollutants in visible light. The invention adopts the technical scheme that: butyl titanate is stirred and slowly dripped into the mixed solution of ethanol and glacial acetic acid; after the mixed solution is stirred uniformly, hydrofluoric acid solution is added drip by drip and stirred, and transparent mixed solution A is formed; ammonia and the ethanol are mixed, ferric nitrate is added in, the pH value is regulated to be 2, and solution B is prepared; the solution B is slowly dripped into the solution A, and uniform and transparent sol is obtained; the sol stays and is aged in the air, and solid gel is obtained; and the solid gel is dried and ground into powder, put into a Francesca furnace to be roasted for 40min to 1.5h at 400DEG C to 500DEG C, and the iron, nitrogen and fluoride co-doped TiO2 photocatalyst is prepared. The photocatalyst and the application thereof expand the visible light response scope of the TiO2 and reduce the composition of electrons and cavities, so that the utilization rate of TiO2 to the solar energy and the light catalysis activity of the TiO2 are improved.

The invention provides a method for reducing nitrogen oxides in flue gas of a medium and small sized industrial coal burning boiler through a wet-method sulfur removing technology. The method comprises the following steps: conducting dust removing and primary sulfur removing on flue gas generated by the coal burning boiler; collecting alkali liquor comprising sulfur removing product sodium sulfite of primary desulfuration according to a dual-alkali method; conducting oxidation treatment on the pretreated flue gas to integrally oxidize NO and residuary sulfur dioxide in the pretreated flue gas; utilizing the oxidized flue gas to get in contact with an alkali liquor, thereby removing nitrogen dioxide and sulfur oxide generated after oxidation in the oxidized flue gas to obtain purified flue gas; conducting gas-water separation to discharge flue gas which meets the environmental standard. Compared with the conventional dry-process flue gas denitration technology, the method provided by the invention has the advantages that desulfurization and denitrification can be simultaneously realized only by additionally arranging an oxidation reactor section in a conventional dual-alkali method absorbing system, so that the economic performance is very high.

This invention discloses an oxidizing and desulfurizing method for fraction oil including that the fraction oil and hydrogen peroxide are reacted in a multi-stage reactor where low level organic acid catalyst exists, the product in each stage reactor is separated in oil-water phase, the water phase product is recovered after the organic acid is removed and the oil phase product is taken as the feed of the next stage reactor, apart from the raw material oil from the above stage, the feed of each stage is added with organic acid and hydrogen peroxide, different reacting stages are determined according to the needs on sulfur by a product and its content and the fraction oil from the last stage is taken as the low sulfur product directly after being dehydrated, which leaves out the process of solvent extraction or adsorption to the oil phase products after the oxidizing reaction.

A preparation technology for improving emulsibility and emulsion stability of desugared egg white powder specifically comprises steps as follows: yolks are separated after fresh eggs are pretreated, an egg white liquid is desugared, then soybean lecithin is added to the egg white liquid, and the emulsibility of egg white powder obtained after spray drying can be significantly improved; besides, an antioxidant is added to the obtained egg white powder, and a lipid oxidation reaction can be avoided in the hot chamber treatment process of subsequent industrial production. Compared with other kinds of egg white powder, the prepared egg white powder has the advantages that the emulsibility can be significantly improved, the egg white powder has the uniform and stable pure white color, the method adopts the simple technology, other devices are not required to be added, and industrial production is facilitated.

The invention relates to the field of hygienic products, and provides a uterus warming sanitary towel. The uterus warming sanitary towel comprises a surface layer, a uterus warming layer, an absorption layer and a leakage-proof bottom layer which are sequentially laminated from top to bottom, wherein the uterus warming layer comprises a sealing bag formed by hot pressing of two layers of polypropylene non-woven fabrics, and a heating composition and a plant extract microcapsule which are filled in the sealing bag, the plant extract microcapsule and the heating composition are separated by a PEbreathable film, the heating composition is pressed into a sheet shape and comprises the following raw materials in parts by weight: 60-80 parts of iron powder, 5-15 parts of activated carbon, 3-5 parts of potassium nitrate, 10-20 parts of water, 2-4 parts of vermiculite, 0.5-1.5 parts of sodium alginate, 1.5-3 parts of starch, 1-2 parts of polyvinylpyrrolidone and 0.4-0.8 part of sodium bicarbonate, and the plant extract microcapsule is prepared by taking a chitosan quaternary ammonium salt and sodium alginate as wall materials and taking a plant extract as a core material. The uterus warming sanitary towel solves the problems that sanitary towels in the prior art are relatively single in function and cannot meet various requirements of female users for sanitary towels.

The invention relates to a copper etching solution with high stability and long etching life. The etching solution is composed of hydrogen peroxide, organic acid, a secondary oxidant, chelating agentsand a pH regulator. In the etching solution, the synergistic effect of the hydrogen peroxide and the secondary oxidant overcomes the defects of low etching rate, too fast oxidant consumption, short etching life and the like; citric acid and other organic acid can promote the dissolution process of copper oxide in the etching solution, and meanwhile, the organic acid can also be used as a pH buffer agent to keep the pH of the etching solution changing in a small range and improve the stability; and a variety of chelating agents are combined for use, different coordination atoms are fully and quickly combined with divalent copper ions to generate a more stable metal chelate, the copper ions are prevented from promoting the decomposition of the hydrogen peroxide, and the service life of thecopper etching solution is prolonged. The copper etching solution provided by the invention can keep stable and uniform in a long etching time, the service life of the etching solution is prolonged, and the etching cost is reduced.