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568 results about "Sodium iodide" patented technology

Sodium iodide (chemical formula NaI) is an ionic compound formed from the chemical reaction of sodium metal and iodine. Under standard conditions, it is a white, water-soluble solid comprising a 1:1 mix of sodium cations (Na⁺) and iodide anions (I⁻) in a crystal lattice. It is used mainly as a nutritional supplement and in organic chemistry. It is produced industrially as the salt formed when acidic iodides react with sodium hydroxide.

BiOI-graphene visible light catalyst and preparation method thereof

The invention relates to a BiOI-graphene visible light catalyst and a preparation method thereof, belonging to the technical field of inorganic material synthesis and photocatalysis. BiOI and graphene are in the shape of a slice, and the graphene is 1.0%-3.0% by weight. The preparation method of the BiOI-graphene visible light catalyst comprises the following steps of: firstly ultrasonically dispersing graphite oxides into ethanol; then stirring, and adding a certain amount of sodium iodide or potassium iodide water solutions and bismuth nitrate glacial acetic acid solutions at the same time; transferring suspending liquid into a high-pressure reaction kettle with a polytetrafluoroethylene liner, and carrying out crystallization reaction at 120-150 DEG C for 6-12 hours; filtering, washing and drying obtain solid products so as to finally obtain the BiOI-graphene compound light catalyst. The preparation method has environment friendliness and simple process; and the prepared BiOI-graphene visible light catalyst has very high visible light catalytic activity and potential application value in a control technology decomposing organic pollutants by utilizing solar photocatalysis.
Owner:SHANGHAI UNIV

Method for preparing 2-para octylphenyl ehtyl-2-amino propanediol

The invention provides a method to prepare a compound method, including the steps: ethylbenzene and capryl chloride make Friedel-Crafts reaction to generate p-capryl chloroethylbenzene; convert capryl chloroethylbenzene under the action of sodium iodide into p-capryl iodoethylbenzene; p-capryl iodoethylbenzene and acetylamino diethyl malonate condense under the action of alkali to generate 2-(p-capryl phenethyl)-2-acetylamino diethyl malonate; or p-capryl iodoethylbenzene makes elimination reaction under the action of alkali to generate p-capryl styrene, which together with acetylamino diethyl malonate condenses under the action of alkali into 2-(p-capryl phenethyl)-2- acetylamino diethyl malonate; a compound is reduced into 2-[4-(1-hydroxyoctyl) phenethyl-]2- acetylamino propylene alcohol; the other coumpound makes hydrogenolysis to obtain 2-(p-octyl phenethyl)-acetylamino propylene alcohol; make alkali hydrolyzation and then acidifies them into salt, so as to obtain it. It also provides a method to prepare intermediate in the above preparing course.
Owner:马启明

Gold nanoparticle triangular plate preparing method and method for preparing gold nanoparticle discs and gold nanoparticle hexagonal pieces on basis of gold nanoparticle triangular plate preparing method

The invention provides a gold nanoparticle triangular plate preparing method and a method for preparing gold nanoparticle discs and gold nanoparticle hexagonal pieces on the basis of the gold nanoparticle triangular plate preparing method, relates to the technical field of gold nanoparticle preparing, and aims at providing the method which is easy and convenient to operate, high in repeatability and efficiency and is used for preparing gold nanoparticle triangular plates, gold nanoparticle discs and gold nanoparticle hexagonal pieces. The gold nanoparticle triangular plate preparing method includes the steps of preparing a gold nanoparticle seed solution through a sodium citrate aqueous solution, a tetrachloroauric acid aqueous solution and a sodium borohydride aqueous solution, preparing a gold nanoparticle triangular plate solution through the preapraed seed solution, a cetyl trimethyl ammonium bromide aqueous solution, a tetrachloroauric acid aqueous solution, a potassium iodide or sodium iodide aqueous solution, a sodium hydroxide aqueous solution and a ascorbic acid aqueous solution, and obtaining gold nanoparticle triangular plates after the liquid supermatant is abandoned. The method is easy and convenient to operate and high in repeatability and controllability, the prepared gold nanoparticle plates are unified in size, gold nanoparticle plates of different types and sizes can be synthesized, and the purity reaches 95% or higher.
Owner:NANOSEEDZ

Method and Apparatus for Spectral Deconvolution of Detector Spectra

Embodiments of the invention pertain to a method and apparatus for spectral deconvolution of detector spectra. In a specific embodiment, the method can be applied to sodium iodide scintillation detector spectra. An adaptive chi-processed (ACHIP) denoising technique can be used to remove the results of stochastic noise from low-count detector spectra. Embodiments of the ACHIP denoising algorithm can be used as a stand alone tool for rapid processing of one dimensional data with a Poisson noise component. In a specific embodiment, the denoising technique can be combined with the spectral deconvolution method. Embodiments of the denoising technique and embodiments of the deconvolution method can be applied to any detector material that provides a radiation spectrum. Specific embodiments can incorporate one or more of the following for spectral deconvolution: denoising, background subtraction, detector response function generation, and subtraction of detector response functions. Photopeaks can be rapidly identified, starting at the high-energy end of the spectrum. The detector response functions can be estimated for photopeaks with a combination of Monte Carlo simulations and simple transformations.
Owner:UNIV OF FLORIDA RES FOUNDATION INC

Environment-friendly efficient corrosion inhibitor as well as preparation method and application of environment-friendly efficient corrosion inhibitor

The invention discloses an environment-friendly efficient corrosion inhibitor as well as a preparation method and application of the environment-friendly efficient corrosion inhibitor. The environment-friendly efficient corrosion inhibitor comprises 0.1 to 2g / L of bamboo leaf extracts, 0.05 to 0.1 g / L of allylthiourea, 0.01 to 0.05g / L of Tween, 0.1 to 0.2g / L of hyamine, 0.01 to 0.05g / L of sodium iodide and the balance of pickling solution. The method comprises the steps of raw material preparation and proportioning, and the application of the environment-friendly efficient corrosion inhibitor refers to the application to steel, aluminum and petrochemical industry equipment preparation, filtering and pipeline cleaning agents. On the basis of the bamboo leaf extracts and the allylthiourea, surfactants of the Tween and the hyamine, an auxiliary agents of the sodium iodide and the balance of pickling solution are added for preparation, and the obtained acid pickling corrosion inhibitor has a synergistic interaction effect. The environment-friendly efficient corrosion inhibitor has the advantages that no toxicity exists, the cost is low, the adaptability is high, in addition, the corrosion effect of acid on metal materials is obviously inhibited, the environment-friendly efficient corrosion inhibitor is suitable for the acid pickling of steel and aluminum in inorganic acid and organic acid and can be applied to the cleaning of petrochemical industry equipment, boilers and pipelines, after the environment-friendly efficient corrosion inhibitor is used, no pollution is caused, and the use is safe and convenient.
Owner:SOUTHWEST FORESTRY UNIVERSITY

Iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites, preparation method and application thereof

Iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites, preparation method and its application in wastewater treatment are disclosed. Bismuth citrate and sodium carbonate as precursors, sodium carbonate as a precipitating agent, dispersed in a mixed solution of water and ethylene glycol, sodium iodide as a iodine source, nano carbon fiber membrane act as the carrier, to synthesis carbon fiber membrane that modified by iodine-doped Bi2O2CO3 nanosheets; then sodium molybdate and thioacetamide as precursors, dispersed in water to react to obtain iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites. The composite material synthesized through a series of steps exhibit excellent photocatalytic activity for the degradation of Rhodamine B and can be recycled for many times. And this invention has the advantages of simple preparation process, easy recovery and multiple use, etc., and has industrial application prospect in water pollution treatment.
Owner:SUZHOU UNIV

Method for separating butane and butene by using multiple mixed solvent

The invention relates to a method for spearing butane from butylene with the multicomponent compound of ionic liquid, saline, ethyl methyl ketone and N-formylmorpholine. The content of ionic liquid in the multicomponent compound is 1.0 to 95 percent; the content of the saline in the multicomponent compound is 0.5 to 20 percent; the electropositive ion of the ionic liquid is iminazole electropositive ion, alkyl imidazole electropositive ion or alkyl quaternary ammonium ion, or the compound thereof; the electronegative ion is tetrafluoroborate electronegative ion, hexafluorophosphoric acid electronegative ion, nitrate ion, tetrachloro aluminic acid iron, heptachlor bi aluminic acid iron, chloride ion, bromine electronegative ion or the mixture; and the ionic liquid can be dimethylformamide potassium thiocyanate compound salt, dimethylformamide sodium sulfocyanate compound salt, or the compound; the saline is potassium thiocyanate, sodium sulfocyanate, ammonium thiocyanate, sodium nitrate, potassium nitrate, sodium iodide, potassium iodide, zinc chloride, copper chloride, zinc chloride, potassium bromide, or the compound thereof.
Owner:YANTAI UNIV

Electrochemical preparation method for 3-selenium aryl indole compounds

The innveiton discloses an electrochemical preparation method for 3-selenium aryl indole compounds, and belongs to the technical field of electrochemical organic synthesis. The preparation method comprises the following steps of: sequentially adding electrolyte, sodium iodide, indole compounds, diselenium aromatic ether compounds and an electrolytic solvent into an electrolytic tank without a diaphragm; inserting an anode and a cathode; stirring and electrifying, reacting under a constant-current condition; and after reaction is completed, carrying out organic extraction on an electrolyte solution by use of an organic solvent, and separating and extracting to obtain the 3-selenium aryl indole compounds. According to the electrochemical preparation method disclosed by the invention, an anode electrode is used as a platinum electrode or a net-shaped glass-state carbon electrode (RVC electrode), the cathode is a nickel net or a net-shaped glass-state carbon electrode (RVC electrode) or platinum, the yield is high, selectivity is good, and a metal catalyst does not need to be additionally added, so that a catalyst which is poisonous, dear and complex to prepare is effectively prevented from being used, a reaction system is simple and effective, and the electrochemical preparation method is environmentally friendly. The method disclosed by invention is operated under normal pressure at a normal temperature, and is simple and safe.
Owner:SOUTH CHINA UNIV OF TECH

Complex additive used for extinguishment with water mist

The invention relates to a compound additive used for extinguishment with water mist, which comprises three kinds of different materials of alkali metal salts, surfactant and diluent according to different action mechanisms of the additive, wherein the alkali metal salts are at least two or a mixture of more of potassium carbonate, sodium carbonate, sodium phosphate, sodium lactate and sodium iodide and account for 1-3 percent of the total mass percent of the additive solution; the surfactant is one or a mixture of sodium dodecyl benzene sulfonate and cocoanut fatty acid diethanolamide and accounts for 0.5-1 percent of the total mass percent of the additive solution; and the diluent is one or a mixture of urea and ammonium bicarbonate and accounts for 0.5-1 percent of the additive solution. The compound additive has simple preparation process, can be rapidly dissolved without adding an organic solvent, has high extinguishment efficiency and no corrosion on extinguishment site equipment, and can be widely applied to water mist extinguishment systems in various occasions and extinguishment occasions.
Owner:BEIHANG UNIV
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