8results about "Bromine oxygen compounds" patented technology

Adding acid to a solution containing bleach and soluble bromide salt accelerates the reaction producing sodium hypobromite which has a pronounced yellow color. The amount of acid needed to provide complete reaction can be controlled by measuring light absorbed by the solution. Add acid until Absorbance stops increasing, indicating complete conversion of NaBr to NaOBr. The amount of acid added can also be controlled by measuring pH before and after adding NaBr to diluted bleach. When enough acid has been added to fully neutralize sodium hydroxide in the bleach and provide nearly 100% conversion, the difference between the two pH values becomes positive and continuous to increase, whereby acid feed can be controlled to make pH change equal to or greater than a predetermined positive value.

The invention relates to the technical field of ocean bionic antifouling nano materials, in particular to a cobalt monatomic regulated layered transition metal sulfide defect-rich nano enzyme as well as a preparation method and application of the cobalt monatomic regulated layered transition metal sulfide defect-rich nano enzyme. The preparation method comprises the following steps: uniformly dispersing a certain amount of transition metal sulfide powder into a certain volume of solvent, injecting cobalt salt into a dispersion system, dipping at room temperature, blowing inert gas into a mixed system until the mixed system is saturated, transferring the mixed system into a microwave oven, and carrying out heat treatment to obtain the transition metal sulfide supported cobalt monatomic nano-enzyme. According to the cobalt monatomic nano-enzyme prepared by the method disclosed by the invention, metal cobalt is tightly anchored on a transition metal sulfide nano-sheet in a monodisperse form, the unsaturated sulfur vacancy concentration of metal sulfide is greatly improved by introducing cobalt atoms, the local electron arrangement is changed, the adsorption kinetics of a catalytic reaction substrate is optimized, and the adsorption efficiency of the metal sulfide is improved. The diffusion energy barrier of the reaction intermediate is reduced, so that the enzyme-like catalytic reaction process is accelerated, and the bionic anti-fouling capability of the nano-enzyme is finally improved.

To provide a liquid deodorant composition that exhibits a deodorizing effect against a wide range of odor-causing substances and can suppress metal corrosion and fabric discoloration, and a deodorization method using the liquid deodorant composition.SOLUTION: A liquid deodorant composition contains a bromine-based oxidizing agent and a sulfamic acid compound.SELECTED DRAWING: None

The utility model belongs to the technical field of sodium bromate production, and particularly relates to an impurity adsorption filtering device in a sodium bromate production process, which comprises a filtering box, conveying supercharging devices mounted on the left side, the right side and the front side of the filtering box, a mixing device mounted at the left end in the filtering box, and a filtering adsorption device mounted at the right end in the filtering box, the mixing device comprises a stirring structure and a heating structure, the heating structure is mounted inside and at the top end of the stirring structure, the stirring structure comprises an asynchronous motor, the output end of the asynchronous motor is connected with a transmission part, a stirring shaft is mounted inside the transmission part, a stirring rod is mounted in the middle of the outer surface of the stirring shaft, and a scraper is mounted at the bottom end of the stirring shaft. According to the impurity adsorption and filtration device in the production process of sodium bromate, through the arrangement of the mixing device, the asynchronous motor is started to drive the transmission part and the stirring shaft for transmission, and the stirring rod, the scraper and the heating pipe are used for heating and stirring, so that further dissolution of unfused raw material particles is facilitated.

This invention discloses an Ag-Bi 24 Br 10 O 31 This paper discusses the preparation and application of Bi₂O₂S heterojunction composite materials, belonging to the field of SERS detection technology. First, Bi₂O₂S heterojunction composite materials are prepared using a hydrothermal method. 24 Br 10 O 31 Nanosheets, then with Bi 24 Br 10 O 31 Bi2O2S was constructed by secondary hydrothermal in-situ growth of Bi2O2S on nanosheets as a substrate. 24 Br 10 O 31 A Bi₂O₂S heterostructure was formed, followed by chemical reduction to load Ag nanoparticles, and then dried to obtain the target composite SERS substrate. This material utilizes the localized surface plasmon effect of Ag to form a strong SERS "hot spot," exhibiting excellent Raman enhancement performance for crystal violet, enabling highly sensitive detection of crystal violet. This method is simple, uses readily available raw materials, and produces a material that combines excellent SERS enhancement performance with photocatalytic activity, showing broad application prospects in environmental monitoring and pollution control.

A method for producing halogen oxyacid, which includes a step of continuously supplying and mixing an organic alkali solution and a halogen and continuously collecting a reaction solution containing halogen oxyacid, and an production apparatus of halogen oxyacid, which includes a reactor, a means of supplying an organic alkali solution to the reactor, a means of supplying a halogen to the reactor, and a means of collecting a reaction solution for taking out the reaction solution from the reactor, in which the organic alkali solution and the halogen are continuously supplied by the means of supplying an organic alkali solution and the means of supplying a halogen, respectively, to the reactor so as to be mixed therein such that a solution containing halogen oxyacid is generated as a reaction solution, and the reaction solution is continuously collected by the means of collecting a reaction solution are provided.

This invention relates to a method for preparing calcium bromide and calcium bromate using electrodialysis. The method includes: reacting an alkaline bromine extraction absorbent with a calcium chloride solution using metathesis electrodialysis to obtain an overflow enriched with calcium bromide and calcium bromate; evaporating and crystallizing the overflow to obtain a mixed salt containing calcium bromide and calcium bromate; leaching the mixed salt with a leaching agent and performing solid-liquid separation to obtain calcium bromate and a calcium bromide-containing filtrate; distilling the obtained calcium bromide filtrate to obtain a distillate and calcium bromide; and recycling the distillate for the leaching process. The method provided by this invention achieves the simultaneous preparation of calcium bromide and calcium bromate using metathesis electrodialysis, and uses the alkaline bromine extraction absorbent as a raw material, reducing the preparation cost of calcium bromide. Furthermore, the raw materials and products are prepared in different compartments, overcoming the shortcomings of traditional methods that require complex separation and purification. This method has the advantages of an environmentally friendly synthesis process, high conversion rate, short synthesis route, high product purity, and low energy consumption.

The invention provides a method and a system for producing bromine by aeration. The method can be implemented by using existing equipment and is simple and convenient to operate. The method comprises the following steps: acidifying the bromine-containing brine, then oxidizing the bromine-containing brine, aerating the oxidized liquid, finally absorbing bromine and the like. Sodium hydroxide is adopted as an absorbent for sodium hydroxide circulation absorption, hydrochloric acid is added into absorption liquid, and Br <-> is oxidized into free bromine.