68results about "Iodine oxygen compounds" patented technology

The COIL gain generator system includes a reactor for producing singlet delta oxygen and a mechanism for mixing high momentum diluent with the singlet delta oxygen and with iodine for producing a high momentum, low static temperature mixture of the singlet delta oxygen, diluent and iodine. The singlet delta oxygen and the iodine react to produce excited iodine atoms which can lase efficiently due to the low static temperature and can, after lasing, recover to high pressure in a diffuser due to the high momentum of the mixture. This provides the capability of using a chemical pump which allows a completely sealed system with no outside exhaust.

A positive-electrode active material for a non-aqueous electrolyte secondary battery according to the present disclosure contains a layered lithium(Li)-containing transition metal composite oxide that contains Li in the transition metal layer and more than 0.4 μmol/g and less than 25 μmol/g of iodine (I) or bromine (Br).

The invention discloses a visible-light-driven photocatalyst as well as a preparation method and applications thereof. The molecular formula of the visible-light-driven photocatalyst is AgIO4, the visible-light-driven photocatalyst is powdered, has a yellow appearance and a prism-shaped microstructure. The preparation method comprises the steps of: firstly, dissolving AgNO3 and KIO4 respectively with deionized water to prepare a solution with certain concentration; under the conditions of room temperature, dark light and magnetic stirring, reacting a AgNO3 solution with a KIO4 solution by adopting a parallel flow precipitation method; controlling the pH of the mixture to be 1 to 3 with certain concentration of nitric acid, after titration, carrying out further magnetic stirring for 2hours under light avoidance condition of room temperature; washing the prepared yellow precipitate for many times, then naturally drying at room temperature to obtain a yellow powder product, namely AgIO4 photocatalyst. The preparation method is extremely simple, the conditions including normal pressure and room temperature of less than of 35 DEG C are mild and easily controlled, the prepared AgIO4 material can be applied in the photocatalytic field, and the visible-light-driven AgIO4 has excellent rhodamine B photocatalytic activity.

The invention relates to an inorganic compound Na2Sn(IO3)6 as well as a preparation method and application thereof. The chemical formula of the compound is Na2Sn(IO3)6 and belongs to a hexagonal system, the space group is P63, and the unit cell parameters are shown in the specification, and the unit cell volume is shown in the specification. The colorless acicular Na2Sn(IO3)6 crystal is prepared by using a hydrothermal method. The powder frequency-double effect of the Na2Sn(IO3)6 crystal is 12 times of that of KH2PO4, and the ultraviolet cutoff edge of the Na2Sn(IO3)6 crystal is about 300nm.

The present invention is compositions and methods for improving seed germination rates or speed using a composition comprising at least one high valency silver ion. The compositions and methods of the present invention are effective in treating biofilms.

Scintillator material comprising nanoparticles (nanocrystals) comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) wherein the nanoparticles exhibit room-temperature scintillation under gamma irradiation. The scintillator nanoparticles can comprise Pb₃O₂I₂. The scintillator nanoparticles can comprise PbIOH in generally equiatomic proportions or non-equiatomic variants thereof that exhibit scintillation under gamma irradiation. The scintillator nanoparticles have a particle dimension in the range of about 5 to about 100 nm. Microparticles (microcrystals) also are provided comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) grown in a nanoparticle colloidal solution over time to a particle dimension greater than 0.1 μm, such as about 2 microns.

A system (100) of the present invention for producing an iodine compound includes: a raw material adjusting unit (1) for supplying hydrogen-containing gas to at least one of liquid iodine in an iodine melting pot (4) and gaseous iodine obtained by evaporating liquid iodine so as to obtain a mixture gas; a hydrogen iodide producing unit (10) including a hydrogen iodide producing tower (12) having a catalyst layer (12a) for converting the introduced mixture gas into crude hydrogen iodide gas; a hydrogen iodide refining unit for removing unreacted iodine from the introduced crude hydrogen iodide gas so as to obtain hydrogen iodide gas; and an iodine compound producing unit (30) for producing a target iodine compound from the obtained hydrogen iodide gas and a reaction material. This allows producing an iodine compound with high purity easily, efficiently, and with low cost.

Production of potassium iodate from chlorine oxidation is carried out by oxidizing potassium iodide to generate potassium iodate in weak base medium, controlling pH of reacting system between 7-10 and temperature 60-100íÒC, and separating the product from concentrated chlorhydric acid. It achieves simple operation, high purity and safety.

Na-rich electrolyte compositions provided herein can be used in a variety of devices, such as sodium ionic batteries, capacitors and other electrochemical devices. Na-rich electrolyte compositions provided herein can have a chemical formula of Na₃OX, Na₃SX, Na _(3-δ) M_δ/2OX and Na _(3-δ) M_δ/2SX wherein 0<δ<0.8, wherein X is a monovalent anion selected from fluoride, chloride, bromide, iodide, H⁻, CN⁻, BF₄⁻, BH₄⁻, ClO₄⁻, CH₃⁻, NO₂⁻, NH₂⁻ and mixtures thereof, and wherein M is a divalent metal selected from the group consisting of magnesium, calcium, barium, strontium and mixtures thereof. Na-rich electrolyte compositions provided herein can have a chemical formula of Na _(3-δ) M_δ/3OX and/or Na _(3-δ) M_δ/3SX; wherein 0<δ<0.5, wherein M is a trivalent cation M³, and wherein X is selected from fluoride, chloride, bromide, iodide, H⁻, CN⁻, BF₄⁻, BH₄⁻, ClO₄⁻, CH₃⁻, NO₂⁻, NH²⁻ and mixtures thereof. Synthesis and processing methods of NaRAP compositions for battery, capacitor, and other electrochemical applications are also provided.

The invention relates to an inorganic compound Li2Sn(IO3)6 as well as a preparation method and use thereof. The chemical formula of the compound is Li2Sn(IO3)6; the compound belongs to a hexagonal crystal system, the space group is P6<3>, cell parameters are that a and b are equal to 9.4589(4) angstrom respectively, c is equal to 5.1707(4) angstrom, Alpha and Beta are equal to 90 degrees respectively, gamma is equal to 120 degrees, and Z is equal to 1; crystal cell volume V is equal to 400.65(4) cubic angstrom; colorless needlelike Li2Sn(IO3)6 crystal is prepared by using a hydrothermal method. The powder frequency-doubled effect of the Li2Sn(IO3)6 crystal is 15 times of that of KH2PO4, and ultraviolet stopping side is about 304 nanometers.

The invention discloses a method for producing sodium periodate. The method comprises the steps of preparation of trisodium dihydrogen periodate, preparation of sodium periodate, crystallization and separation, centrifugal dehydration and drying, wherein the preparation step of the trisodium dihydrogen periodate sequentially comprises the steps of preparation of sodium hydrogen iodate, preparation of sodium iodate and oxidation with sodium persulfate. The trisodium dihydrogen periodate is obtained by reacting sodium chlorate and iodine in an aqueous solution to produce the sodium hydrogen iodate, neutralizing the sodium hydrogen iodate by using sodium hydroxide to obtain the sodium iodate and oxidizing the sodium iodate in the sodium hydroxide solution by using the sodium persulfate, so that the method for preparing the trisodium dihydrogen periodate by using chlorine, iodine and sodium hydroxide in the prior art is abandoned, and the production method is stable in reaction, easy to control and high in production safety degree. Compared with a chlorine oxidation method, the method has the advantages of low consumption of raw materials, small amount of discharged waste liquor and environment friendliness.

The invention discloses an intermediate infrared nonlinear optical crystal material having the chemical formula of RbIO2F2. The crystallographic space group of the material is Pca21 and the cell parameters are as follows: a=8.567(4) angstroms, b=6.151(3) angstroms, c=8.652(4) angstroms, alpha=beta=gamma=90 degrees, and z=4. The invention also provides a hydrothermal preparation method of the crystal material. The intermediate infrared nonlinear optical crystal material prepared has a quite strong phase-matching second harmonic generation (SHG); the result of a Kurtz powder SHG test indicates that the powder SHG of the crystal material is four times that of potassium dihydrogen phosphate (KDP); the laser-damagedthreshold of the crystal material is at least 700MW/cm<2>, which is more than 23 times the laser-damagedthreshold of the existing commercial intermediate infrared nonlinear optical crystal material AgGaS2; the crystal material has a relatively wide transmission range within the visible region and the intermediate infrared region, and the complete transmission waveband is 0.29-12 microns; the crystal material contains no crystal water, and is stable in air and good in thermal stability; in addition, a single crystal material can be prepared by use of a simple solvent evaporation method.

The invention relates too an iodate preparation method, which comprises: A, iodic acid preparation, wherein hydrogen peroxide is used as an oxidant, small amounts of nitric acid and halogen acid such as chloric acid, bromic acid and iodic acid are adopted as catalysts of an oxidation reaction, refined iodine is oxidized into the iodic acid, the addition amount of the used nitric acid is 1-10% of the added refined iodine, the addition amount of the used halogen acid is 0.5-50% of the added refined iodine, the reaction temperature is 50-100 DEG C, and the reaction time is 4-8 h; and B, iodate preparation, wherein the pure iodic acid solution obtained through the step A is neutralized directly with a carbonate solution of a hydroxide or alkali metal, the neutralization reaction temperature is controlled at 20-50 DEG C, and the neutralization PH value is 7.

The invention relates to a method for preparing a dialdehyde compound employing periodate regenerated by an electrochemical method for cyclically and lastingly oxidizing annular ortho diol in a closed system, and relates to electrolytic regeneration and recycling processes of expensive periodate. The method has the advantages that the dialdehyde substance is high in yield, high in purity and high in production efficiency; the periodate and an organic solvent are circulated in the overall flow, so that the production cost is reduced; no pollution is generated; and a reactor and an electrolytic bath are simple in structure, so that a gas is not required, the material consumption is low, and energy consumption is low.

The invention discloses a method of preparing high-purity potassium iodate. An iodine-potassium iodate solution is prepared from crude iodine, thus solving the problem that iodine content cannot be accurately metered when crude iodine is directly fed; by means of the feeding mode of the iodine through dissolution, the problems that during addition of solid iodine, a manhole in a device needs to open for feeding the raw materials, which may cause environment pollution and health damage due to chlorine leakage and iodine volatilization, thereby improving the technical safety. The preparation method is simple and safe, is easy to carry out and low in cost and can reach more than 89% in yield and more than 99.5% in purity. The reaction process is free of generation of high-toxic gas, chlorine,and is free of generation of waste solid, waste gas and waste water. The process is safe and environment-friendly, is low in requirement on equipment, is low in cost, and is easy to achieve in industrial production.

The invention relates to a photochromic lens capable of blocking ultraviolet rays, and a preparation method and an application thereof. The preparation method comprises the following steps: preparinga photochromic nanometer material which can block ultraviolet rays and has a general formula of MaObXc, wherein M, O, X, a, b and c are as defined in the specification, and mixing the photochromic nanometer material with an optical resin material used for preparing a lens for molding so as to obtain the photochromic lens, or coating the photochromic nanometer material onto the surface of a moldedlens to form a protective layer so as to obtain the photochromic lens. The photochromic lens prepared by using the preparation method provided by the invention can block 80% or more of ultraviolet rays, especially can become a transparent dark color to reduce transmittance when strong light irradiates, and can restore to a colorless transparent state when no strong light irradiates. The preparation method provided by the invention has the characteristics of simple process flow, low cost, large yield, applicability to industrial production, good practical prospects, etc.

The invention provides a bismuthyl iodate nanosheet material and a preparation method thereof. The method includes the steps of: providing a bismuth oxyiodide nanosheet material; and placing the bismuth oxyiodide nanosheet material in ozone atmosphere for reaction for 3-20h, with the ozone content of the ozone atmosphere being 5%-80%. In the reaction process, the I ion in bismuth oxyiodide crystalis oxidized to IO3<-> ion, and the morphology of bismuthyl iodate nanosheet remains unchanged, thus obtaining the bismuthyl iodate nanosheet material. The invention adopts gas phase oxidation method,because of the particularity of gas, no separation process is needed after reaction, and the bismuthyl iodate nanosheet material characterized by uniform size and regular product structure can be prepared directly from the bismuth oxyiodide nanosheet material; the reaction gas can be reutilized to improve the utilization rate; and the preparation time is short and the reaction temperature is low,therefore the method has better industrial application prospects.

The invention relates to an industrial method for preparing pure iodic acid and a salt thereof. According to the method, pure iodine is oxidized by hydrogen peroxide, a small amount of nitric acid or oxoacid or non-oxoacid of halogen is added to prepare pure iodic acid solution, the yield of the pure iodic acid solution can reach 98% on the basis of iodine, hydroxide or carbonate of alkali metal is adopted to neutralize an iodic acid solution, so that the pH of the iodic acid solution is equal to 7, crystal of the pure iodate can be prepared, and the crystal is washed and dried to obtain the finished product. The purity of the iodate reaches 99.0%, and the yield of the iodate is 85-95% on the basis of iodic acid.