17 results about "Redox catalyst" patented technology

The application discloses a method for electrochemically synthesizing oxothiazolazine alkane compounds, which utilizes an electrochemical sulfur and oxygen oxidation method for olefins by using olefin radical cations and diprotic nucleophiles, can synthesize N / S heterocyclic compounds in a single reaction container, utilizes easily obtained thiols and styrene azide, does not need external oxidants or redox catalysts, can synthesize N / S heterocyclic compounds in a single reaction container, and can widen the way of obtaining complex molecular structures for pharmaceutical chemistry and material science.

The invention belongs to the technical field of battery preparation, and particularly relates to a double-monatomic redox catalyst and a preparation method and application thereof. The double-monatomic redox catalyst is prepared by compounding the RMF polymer and the ZIF-8, so that structural collapse and metal agglomeration in a pyrolysis process are effectively prevented, and high dispersion of metal diatoms containing Fe atoms is realized. On the basis, the oxidation-reduction catalyst shows excellent ORR activity in both acidic and alkaline media, the half-wave potential in the acidic medium can reach 0.728 V, and the half-wave potential in the alkaline medium can reach 0.788 V.

An integrated waste gas treatment system includes an adsorption / desorption device that receives a waste gas that includes an organic compound and an organic nitrogen compound exhausted from a semiconductor manufacturing facility, where the adsorption / desorption device adsorbs the organic compound and the organic nitrogen compound and concentrates and desorbs the organic compound and the organic nitrogen compound, and a catalytic decomposition device disposed adjacent to the adsorption / desorption device, where the catalytic decomposition device includes a catalytic chamber that provides a gas passage through which a gas desorbed from the adsorption / desorption device flows and an oxidation-reduction catalyst disposed in the gas passage that removes the organic compound and the organic nitrogen compound from the desorbed gas. The organic compound and the organic nitrogen compound are subjected to an oxidation treatment by the oxidation-reduction catalyst, and nitrogen oxides generated by the oxidation treatment are removed by a selective reduction reaction.

An electrosynthetic cell and its use are disclosed. The electrosynthetic cell can be used in a reductive electrosynthesis of one or more desired chemical products from one or more chemical reactants. The electrosynthetic cell comprises a hydrogen anode half-cell and a cathode half-cell. The hydrogen anode half-cell comprises hydrogen (H2), a first liquid phase solution that is in contact with an anode and a heterogeneous redox catalyst capable of catalyzing the oxidation of H2 to H+, and a redox mediator capable of transferring or accepting electrons and / or protons while undergoing reduction or oxidation. The cathode half-cell comprises a second liquid phase solution comprising the one or more chemical reactants that is in contact with a cathode and a reductive synthesis catalyst capable of catalyzing the reductive synthesis of the one or more desired chemical products from the one or more chemical reactants.

The invention relates to a metal surface treatment technology, in particular to an environment-friendly titanium alloy oxide skin removing chemical liquid medicine which comprises the following raw materials in percentage by mass: 10-30% of alkaline substance, 10-30% of solvent and the balance of water. The dosage of the metal ion chelating agent is 5%-10%; 0.1%-2% of a redox catalytic medium; 0.5-5% of a metal corrosion inhibitor; 5-15% of an accelerant; 0.5%-2% of a penetrant; and the balance of deionized water is supplemented. The environment-friendly titanium alloy oxide skin removing chemical liquid medicine can efficiently remove surface oxide skin and meanwhile is high in titanium alloy base material protection performance.

The invention discloses a method for synthesizing selenocyclopentene by electrochemical catalysis of cyclization reaction of terminal alkyne, acrylate and diselenide [3 + 2], and belongs to the technical field of organic synthesis.The method comprises the steps that the terminal alkyne, allyl dimethyl ester and diselenide serve as raw materials, cheap ferrocene serves as a redox catalyst under the electrochemical condition, and the selenocyclopentene is synthesized through the cyclization reaction of the terminal alkyne, the acrylate and the diselenide [3 + 2]; the selenium-containing cyclopentene skeleton is efficiently constructed. According to the method for synthesizing selenocyclopentene through the cyclization reaction of terminal alkyne, acrylate and diselenide [3 + 2] through electrochemical catalysis, the reaction condition is mild, no additional oxidizing agent is needed, the substrate applicability is wide, the functional group compatibility is good, and the target product can be obtained with the medium to excellent yield.

The present disclosure provides a method for producing a fluoroether, with which it is possible to easily produce fluoroethers having various structures.　A method for producing a fluoroether according to the present disclosure comprises a step 1 for obtaining a fluoroether by reacting an alkene represented by formula (1): CR1R2=CX1X2 (wherein X1 and X2 may be the same as or different from each other and each represent a hydrogen atom or a halogen atom; and R1 and R2 may be the same as or different from each other and each represent a hydrogen atom, an aryl group or alkyl group which may have a substituent, an alkyl group which may have a substituent, an alkenyl group which may have a substituent, an alkynyl group which may have a substituent, a fluoroalkyl group which may have a substituent, a halogen atom, or a group represented by R-(CH2)n- (wherein R is an aryl group which may have a substituent; and n is an integer of 3 or more)) with an N-fluoroalkoxy compound in the presence of an oxidation-reduction catalyst and a nucleophilic agent.

The present invention relates to a photocurable, reactive, pressure-sensitive adhesive film. The adhesive film according to the invention makes it possible to achieve structural bond strengths. The adhesive film comprises (a) at least one free-radically polymerizable compound, and (b) at least one free-radical initiator, and (c) at least one photoredox catalyst, and (d) at least one carbon black. The adhesive film has improved storage stability after exposure to ambient light compared to the prior art.

An integrated waste gas treatment system includes an adsorption / desorption device that receives a waste gas that includes an organic compound and an organic nitrogen compound exhausted from a semiconductor manufacturing facility, where the adsorption / desorption device adsorbs the organic compound and the organic nitrogen compound and concentrates and desorbs the organic compound and the organic nitrogen compound, and a catalytic decomposition device disposed adjacent to the adsorption / desorption device, where the catalytic decomposition device includes a catalytic chamber that provides a gas passage through which a gas desorbed from the adsorption / desorption device flows and an oxidation-reduction catalyst disposed in the gas passage that removes the organic compound and the organic nitrogen compound from the desorbed gas. The organic compound and the organic nitrogen compound are subjected to an oxidation treatment by the oxidation-reduction catalyst, and nitrogen oxides generated by the oxidation treatment are removed by a selective reduction reaction.

This invention relates to the field of fluorescent compound preparation technology, and discloses a method for synthesizing naphtho[1',2'4,5]imidazo[1,2-a]pyridine fluorescent compounds, including a cyclized compound, wherein the cyclized compound includes styrene compounds and imidazolium heterocyclic compounds, and the cyclized compound is a naphtho[1',2'4,5]imidazo[1,2-a]pyridine fluorescent compound; it also includes a method for synthesizing naphtho[1',2'4,5]imidazo[1,2-a]pyridine fluorescent compounds. This invention utilizes a synergistic combination of a photo-redox catalyst and a cobalt oxime catalyst to achieve a [4+2] cyclization reaction of olefins with imidazopyridines. Under photochemical conditions, imidazopyridine compounds and styrene compounds undergo a [4+2] cyclization reaction with the addition of the photo-redox catalyst and the cobalt oxime catalyst. This facilitates the rapid synthesis of naphtho[1',2'4,5]imidazo[1,2-a]pyridine fluorescent compounds. It avoids the use of precious metal catalysts or chemical oxidants, and the reaction conditions are mild, making it suitable for the mass production and processing of naphtho[1',2'4,5]imidazo[1,2-a]pyridine fluorescent compounds, reducing synthesis and production conditions, saving costs, and improving efficiency.

This disclosure provides a method for producing fluorine-containing aromatic compounds. [Solution] A method for producing a fluorine-containing aromatic compound, comprising the step of obtaining a product by reacting an N-fluoroalkoxy compound with an aromatic compound in the presence of a redox catalyst, The N-fluoroalkoxy compound is a compound having an N-ORf moiety (Rf represents a fluoroalkyl group with 3 or more carbon atoms), and the product is - An aromatic fluoroether compound (E1) having an ORf moiety, Aromatic compounds (E2) having an -Rf' moiety (where Rf' represents a fluoroalkyl group obtained by removing one carbon atom from Rf). It contains at least one fluorine-containing aromatic compound selected from the group consisting of the following.

The invention discloses synthesis of a composite metal oxide type redox catalyst and application of the composite metal oxide type redox catalyst in chemical-looping ammonia synthesis reaction. The invention relates to a preparation method of a chemical-looping ammonia synthesis catalyst and application of the catalyst in chemical-looping ammonia synthesis. When the catalyst is used for catalyzing the chemical-looping ammonia synthesis reaction, the chemical-looping circular reaction can be realized, the energy consumption required by the reaction can be reduced, the ammonia can be synthesized under mild conditions, and the catalyst can still keep good catalytic activity after being regenerated. The catalyst is rich in raw material source, low in carrier price and easy to prepare, has relatively good development potential and has a very good application prospect in the aspect of catalyzing chemical-looping synthesis of ammonia.

This disclosure provides a method for producing fluorine-containing aromatic compounds. [Solution] A method for producing a fluorine-containing aromatic compound, comprising the step of obtaining a product by reacting an N-fluoroalkoxy compound with an aromatic compound in the presence of a redox catalyst, The N-fluoroalkoxy compound is a compound having an N-ORf moiety (Rf represents a fluoroalkyl group with 3 or more carbon atoms), and the product is - An aromatic fluoroether compound (E1) having an ORf moiety, Aromatic compounds (E2) having an -Rf' moiety (where Rf' represents a fluoroalkyl group obtained by removing one carbon atom from Rf). It contains at least one fluorine-containing aromatic compound selected from the group consisting of the following.

The present disclosure provides a fluorine-containing aromatic compound production method.　This fluorine-containing aromatic compound production method comprises a step for reacting an N-fluoroalkoxy compound and an aromatic compound in the presence of an oxidation-reduction catalyst to obtain a product. The N-fluoroalkoxy compound is a compound having an N-ORf moiety (Rf represents a fluoroalkyl group having 3 or more carbon atoms). The product includes at least one fluorine-containing aromatic compound selected from the group consisting of aromatic fluoroether compounds (E1) having an -ORf moiety, and aromatic compounds (E2) having an -Rf' moiety (Rf' represents a fluoroalkyl group obtained by removing one carbon atom from Rf).

The present invention relates to a light-curing, reactive, pressure-sensitive adhesive film. Structural bond strengths can be achieved with the adhesive film according to the invention. The adhesive film includes (a) at least one radically polymerizable compound, and (b) at least one radical initiator, and (c) at least one photoredox catalyst, and (d) at least one soot. The adhesive film is characterized by improved storage stability after exposure to ambient light compared to the state of the art.

A two-part adhesive composition composed of at least a first agent, which comprises a compound having one or more (meth)acryloyl groups in the molecule and an organic peroxide, and a second agent, which includes a reducing agent that forms a redox catalyst system with the organic peroxide, wherein the first agent or the second agent contains an ionic liquid.

The invention belongs to the technical field of electrochemical energy storage, and relates to a positive and negative differential integrated electrode for a static filmless zinc-bromine battery and a battery stack. The electrode comprises a flexible graphite composite bipolar plate, one side of the flexible graphite composite bipolar plate is compounded with a non-conductive negative electrode thin pre-oxidized felt subjected to oleophobic modification, the other side of the flexible graphite composite bipolar plate is compounded with a positive electrode thick activated graphite felt which has a gradient pore structure and is loaded with a bromine oxidation reduction catalyst, the contact side of the bipolar plate and the negative electrode felt is activated, and the three layers are compounded into an integrated structure. The stack is horizontally placed, positive and negative electrode felts of adjacent electrodes are directly attached and compressed, no diaphragm exists, and the compression ratio is controlled by a limiting column. Three-dimensional uniform deposition of zinc is guided through the negative electrode non-conductive felt, the bromine oil phase is locked through cooperation of positive electrode gradient pores and gravity settling, the contact resistance is reduced through the integrated structure, non-film static operation is achieved, the cycle life exceeds 500 times, the self-discharge rate is lower than 0.45%, the energy efficiency is higher than 80%, the structure is simplified, and the lithium ion battery is suitable for large-scale production.