8 results about "Iodate salt" patented technology

This application relates to the field of water treatment technology, specifically a method for the simultaneous degradation of iodine-based pollutants and adsorption removal of iodine products using ferric chloride and biochar-catalyzed PMS. The method includes the following steps: S1, adding iodine-based pollutants to water, replenishing water, and adjusting the pH to obtain a simulated polluted water sample; S2, under stirring conditions, adding biochar, ferric chloride solution, and PMS solution to the simulated polluted water sample obtained in step S1 to obtain a reaction solution, allowing the mixture to react, standing to precipitate, and collecting the supernatant. This method achieves a removal rate of over 96% for iopamidol, and the content of iodide ions and iodates in the polluted water sample is extremely low.

This invention belongs to the technical field of organic synthesis and discloses a method for preparing benzo[i]iodo[i]oxapentane reagent. The method involves adding periodic acid or periodate as an oxidant, along with an o-iodobenzyl alcohol compound, to an aqueous acetic acid solution. Heating causes a redox reaction, followed by recrystallization or slurrying to obtain the product, benzo[i]iodo[i]oxapentane reagent. R1 is selected from methyl or trifluoromethyl; R2 is selected from hydrogen, halogen, or methyl; R3 is selected from hydrogen or methyl; and periodate is selected from sodium periodate, potassium periodate, tetrabutylammonium potassium periodate, or lithium periodate. This invention provides a one-step, efficient method for preparing benzo[i]iodo[i]oxapentane reagent using periodic acid / salt, with simple steps and easily separable reaction products. The redox reaction equation is as follows:

The present invention provides methods of preparing compound of Formula (I), wherein the compounds are represented by the structure of Formula (I) wherein: R1 each is independently F, Cl, Br, I, OCH3, CN or NO2; R2 each is independently identical or different C1-C5 alkyl; n1 is an integer between 1 and 5; and n2 is an integer between 1 and 4. In addition, the present invention provides a compound represented by the following structures: Compound (1a) and Compound (2), wherein X comprises: chloride, acetate, adipate, alginate, ascorbate, aspartate, benzoate, benzenesulfonate, bisulfate, borate, butyrate, citrate, camphorate, camphorsulfonate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fumarate, glucoheptanoate, glycerophosphate, hemisulfate, heptanoate, hexanoate, hydroiodide, maleate, 2-hydroxyethanesulfonate, lactate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oxalate, pectinate, persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, propionate, salicylate, succinate, sulfate, sulfonate, tartrate, thiocyanate, toluenesulfonate, or undecanoate salt, or any combination thereof.

The application discloses a method for removing pollutants based on a biochar-coupled high-iodate permeable reactive barrier, comprising the following steps: mixing biochar-high-iodate composite fillers with inert media to serve as filling media of the permeable reactive barrier, and making contaminated groundwater flow through the permeable reactive barrier to realize adsorption and degradation of organic pollutants; wherein a preparation method of the biochar-high-iodate composite fillers comprises the following steps: pretreating biomass raw materials, pyrolyzing and carbonizing the biomass raw materials under anoxic conditions to obtain biochar; mixing the obtained biochar with high-iodate, and loading the high-iodate on the biochar through ball milling; and drying the product obtained after the ball milling to obtain the biochar-high-iodate composite fillers. The application has both adsorption and oxidation functions, and due to the presence of the composite fillers, the pollutant removal capacity and long-term performance of the permeable reactive barrier are improved, and a green and sustainable in-situ remediation new scheme is provided for an organic pollution site.

The application discloses a preparation method of double-carboxylated nanocellulose and belongs to the technical field of nanocellulose material preparation. The method comprises the following steps: obtaining double-aldehyde nanocellulose by selectively oxidizing nanocellulose through a high-iodate; adjusting the pH of the double-aldehyde nanocellulose solution obtained through reaction to alkalinity; and then introducing ozone into the alkaline double-aldehyde nanocellulose suspension to perform oxidation treatment, so as to obtain double-carboxylated nanocellulose. The application realizes the regeneration of the high-iodate by controlling the ozone introduction time and the pH value in the blending system. The regenerated high-iodate acts as a catalyst and cooperates with ozone to the double-aldehyde nanocellulose, so as to prepare double-carboxylated nanocellulose with high carboxyl content. The method is efficient and environmentally friendly, realizes the recycling of the catalyst high-iodate, reduces the production cost, avoids the excessive degradation of the double-aldehyde nanocellulose and the carboxylated product thereof, and has the potential for large-scale production of double-carboxylated nanocellulose.

Methods and materials for removing iodate from aqueous solutions are described. The methods involve the reduction of iodate to iodide followed by subsequent or simultaneous removal of iodide by adsorption, ion exchange, or precipitation. These methods are effective for removing radioactive iodine from radioactive nuclear waste.

The present application relates to a kind of vanadium iodate second-order nonlinear optical crystal material and its preparation and application, the chemical formula is VO2 (H2O) (IO3), molecular weight is 275.86, belongs to orthorhombic system, its space group is Pca21, cell parameter is α=β=γ=90 °, Z=4, cell volume is The vanadium iodate crystal material of the present application has excellent second-order nonlinear optical performance, under 1200nm laser irradiation, powder frequency doubling intensity is about 18.0 times of potassium dihydrogen phosphate crystal (KDP), under 2100nm laser irradiation, powder frequency doubling intensity is about 1.5 times of potassium titanyl phosphate (KTP), and phase matching can be realized.In addition, vanadium iodate crystal material also has large birefringence, reaches 0.184 at 546nm.The above research results show that the crystal has wide application prospect in the field of laser frequency conversion, photoelectric modulation, laser signal holographic storage etc..

The application discloses a method for degrading pollutants by using a chromium-potassium periodate system, and comprises the following steps: adding chromium sulfate into ultrapure water while stirring, and adjusting the pH of the solution to 8-11; under the stirring state, adding potassium periodate into the solution to form a chromium-potassium periodate system solution; and adding the chromium-potassium periodate system solution into a solution of pollutants to be degraded to perform reaction and degrade the pollutants. The method can realize efficient oxidation and degradation of organic pollutants in water under the conditions of low catalyst consumption and proper pH. The application breaks through the pH condition of chromium, and makes the application of chromium not limited to the low pH field, avoids the generation of toxic by-product Cr(VI), and realizes the cleanness and environmental protection of the process.