13 results about "Oxidation-Reduction Agent" patented technology

The invention discloses a method for preparing a sodium electric precursor by a redox control potential method. According to the invention, the oxidation-reduction electrode is arranged on the reaction kettle to monitor the oxidation-reduction potential of the reaction system in real time, and different potential control is realized by controlling the purity of nitrogen and other mixed gases in the reaction kettle or the dosage of an oxidation-reduction agent added into the reaction kettle; the primary and secondary particle morphology, the specific surface area and the product compaction of the product can be effectively controlled, and precursors with different physical and chemical indexes can be prepared according to different potentials. According to different characteristics of the precursor, the sintered positive electrode material has different electrochemical properties, such as higher electrochemical rate capability, gram volume and cycle performance, so as to meet application requirements of different products.

A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and applying the current in a pulsed waveform responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to apply the current in a pulsed waveform responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.

The invention discloses a carbon nitride quantum dot as well as a preparation method and application thereof, and the preparation method comprises the following steps: taking formamide as a precursor and a solvent, taking ammonia water as a doping reagent, taking H2O2 as a redox agent, and carrying out solvothermal reaction to obtain the carbon nitride quantum dot. Wherein the temperature of the solvothermal reaction is 160 to 180 DEG C. The preparation method disclosed by the invention is low in raw material cost, short in synthesis time and simple and convenient to operate, efficient batch production is realized, and the generated carbon nitride quantum dot has good stability, shows efficient peroxidase-like activity as a metal-free nano-enzyme, shows excellent catalytic ability in vitro, and has good application prospects. The compound has a great prospect in the aspect of tumor treatment.

The application relates to a method for preparing an eight-membered selenium-containing benzazepine compound, which comprises the following steps: taking an N-(but-3-en-1-yl)-4-methyl-N-(2-(1-phenylvinyl)phenyl)benzenesulfonamide compound as a substrate, generating a selenyl radical through anodic oxidation of a selenide under electrochemical driving, and obtaining the eight-membered selenium-containing benzazepine compound through radical coupling-cyclization of the selenyl radical and the substrate. The method steps have the advantages of green simple operation, use of traceless electrons instead of an external oxidizing and reducing agent, avoidance of use of a metal catalyst and an external oxidizing and reducing agent, economy, simple and easy-to-prepare raw materials, wide substrate range and the like.

The invention relates to a method for preparing 2-aryl-3-difluoromethyl benzothiophene by utilizing an electrochemical reaction. Specifically, the invention provides an electrochemical anodic oxidation cathode reduction characteristic instead of a traditional chemical oxidation reducing agent, sodium difluoromethanesulfinate is used as a difluoromethyl donor, and a difluoromethyl free radical is excited through electrochemical anodic oxidation, so that the difluoromethyl free radical is synthesized. The preparation of the target molecule 2-aryl-3-difluoromethyl benzothiophene is realized through intramolecular cyclization initiated by addition of free radicals to active alkyne. The method does not need to add an additional transition metal catalyst and a super-stoichiometric redox agent, has the advantages of mild reaction conditions, high product yield, good chemical selectivity and the like, better conforms to the purpose of green and sustainable development of the current society, and has a good industrial application prospect.

The invention belongs to the technical field of high-sulfur flue gas treatment, and particularly relates to a high-sulfur flue gas denitration and sulfur protection recycling method and application. The recycling method for denitration and sulfur protection of the high-sulfur flue gas comprises the following steps: carrying out denitration treatment on the high-sulfur flue gas and then carrying out acid making treatment; the denitration treatment comprises the following steps: carrying out spontaneous reaction denitration on the high-sulfur flue gas under a spontaneous reaction condition; the spontaneous reaction condition comprises constant temperature and micro pressure; wherein the constant temperature ranges from 180 DEG C to 450 DEG C; and the pressure of the micro pressure is 1.01 atm to 1.5 atm. According to the recycling method for denitration and sulfur protection of the high-sulfur flue gas, external oxidation / reducing agents such as ammonia and ozone are not introduced in the whole process, and the secondary pollution problems such as ammonium bisulfate blockage, ammonia escape and ozone leakage are avoided from the source.

The invention is suitable for the technical field of organic synthetic chemistry, and provides a 1, 2, 4-triazolidine compound and a synthetic method thereof. The 1, 2, 4-triazolidine compound has the advantages of convenient synthesis conditions, room temperature reaction, simple steps and no need of complex equipment, the electrolytic current is adaptive to a common laboratory, and the problem of high cost caused by noble metals can be avoided; redox is realized through electron transfer between the electrodes in the reaction, no additional chemical redox agent needs to be added, the solvent is environment-friendly, the green chemical requirement is met, and economic practicability and environmental protection value are both achieved. Meanwhile, the performance of the synthesis method is excellent, a 1, 2, 4-triazolidine ring system C-N bond can be constructed with high selectivity, the product structure is single, the yield is as high as 90%, the synthesis period is short, the efficiency is high, the substrate application range is wide, the 1, 2, 4-triazolidine compound with various structures and rich substituent groups can be efficiently synthesized, and a technical support is provided for construction of a drug research and development compound library.

The application belongs to the technical field of organic synthetic chemistry, and provides a 1,2,4-triazolane compound and a synthesis method thereof.The synthesis condition of the 1,2,4-triazolane compound is convenient, the reaction is carried out at room temperature, the steps are simple, and no complex equipment is needed, the electrolytic current is suitable for ordinary laboratories, the high cost problem caused by noble metals can be avoided, the reaction is realized by electron transfer between electrodes, no additional chemical oxidizing and reducing agent is needed, the solvent is environmentally friendly, meets the green chemistry demand, and has economic practicability and environmental protection value.Meanwhile, the synthesis method has excellent performance, can selectively construct a 1,2,4-triazolane ring system C-N bond, the product structure is single, the yield is as high as 90%, the synthesis cycle is short, the efficiency is high, the substrate application range is wide, and the 1,2,4-triazolane compound with various structures and rich substituents can be efficiently synthesized, thereby providing technical support for the construction of a drug research compound library.

The invention provides a lithium ion battery monomer, a lithium ion battery and a power utilization device. The lithium ion battery monomer comprises a positive pole piece, an isolating membrane and a negative pole piece, the isolating membrane is located between the positive pole piece and the negative pole piece, the isolating membrane comprises a base material and a coating located on the surface of the base material, and the coating comprises a redox agent. And the redox potential of the redox agent is between the positive potential and the negative potential of the lithium ion battery monomer at the charging upper limit. The coating containing the redox agent is arranged on the surface of the base material of the isolating membrane of the single lithium ion battery, and an oxidation product generated at the positive pole piece can be reduced at the isolating membrane through the redox agent, so that the amount of the oxidation product transferred to the negative pole piece can be reduced, the consumption of active lithium ions is reduced, and the service life of the lithium ion battery is prolonged. And the storage performance of the lithium ion battery is improved.

The utility model relates to the technical field of redox reactors, in particular to an arsenic redox reactor. According to the technical scheme, the device comprises a circulating pump, a reaction kettle and a cover plate, a hydraulic cylinder and the circulating pump are fixedly installed on the two sides of the outer surface of the reaction kettle respectively, the tail end of an output pipe of the circulating pump is fixedly connected to the lower surface of the reaction kettle, and the tail end of an input pipe of the circulating pump is fixedly connected to the position, close to the upper surface, of the outer surface of the reaction kettle. A bottom filtering plate is fixedly installed at the position, close to the lower surface, in the reaction kettle, a transverse plate is rotationally connected to the output end of the hydraulic cylinder, a cover plate is fixedly connected to one side of the transverse plate, a fixing ring is fixedly installed at the position, close to the edge, of the lower surface of the cover plate, and a top filtering plate is fixedly connected to the lower surface of the fixing ring through a connecting plate. In the process of preparing arsenic through oxidation reduction, reactants deposited at the inner bottom of the reaction kettle can be in full contact with an oxidation reducing agent, so that the reaction preparation efficiency of arsenic is improved.

This application discloses a composition, an optoelectronic device, and a display device. The composition includes a semiconductor material and a first metal salt. The first metal salt includes a first metal element having at least two valence states, including a first valence state and a second valence state, wherein the first valence state is higher than the second valence state. The valence state of the first metal element in the first metal salt is the first valence state. The semiconductor material includes one or more of N-type metal oxides, P-type metal oxides, P-type organic compounds, and quantum dots. The first metal salt can act as a redox agent, effectively improving the phenomenon of semiconductor material being oxidized by activated oxygen, thereby improving the performance stability of the semiconductor material. The composition can be applied to optoelectronic devices, effectively improving the problem of aging and degradation of functional layers due to oxidation by activated oxygen, improving the electrical aging stability of optoelectronic devices, thereby improving the device life and reliability of optoelectronic devices.

A method includes selectively redox leaching a. black mass that has lithium battery materials with an acid and a. redox agent. The method may selectively removing titanium, copper and aluminum from a first filtrate formed from the redox leaching. The method may treat a. filtrate formed from removing the copper and the aluminum to form battery grade compounds.

This application provides a method for the oxidative synthesis of dihydronaphthyl-1(2H)-one from styrene and its derivatives, comprising: electrochemically catalytically oxidizing styrene and its derivatives to 3,4-dihydronaphthyl-1(2H)-one in an electrochemical catalytic reactor; wherein the working electrode of the electrochemical catalytic reactor is a platinum nanoparticle electrode. This reaction does not require stringent temperature and pressure conditions, does not use additional oxidizing or reducing agents, and utilizes only the cleanest reaction reagent, "electrons," to generate the required catalyst or reactive intermediate in situ. The electrode materials are inexpensive and readily available, the process is simple, and highly reproducible. It is an efficient, safe, and environmentally friendly production process with potential industrial application value.