37 results about "Inorganic iodine" patented technology

The present invention provides a process for the carbonylation of an alcohol, ether or ester to products comprising a carboxylic acid, the anhydride thereof or coproduction of the carboxylic acid and anhydride. More particularly, the present invention provides a process for the carbonylation of methanol to produce acetic acid by reacting methanol with carbon monoxide in a liquid reaction medium containing a catalyst comprising rhodium, iridium, iodide ion, and said reaction medium further comprising water, acetic acid, methyl iodide, and methyl acetate and subsequently recovering acetic acid from the resulting reaction product.

There is provided a method of treating irritations and inflammation of the eye or ear by the topical administration of an aqueous composition containing an inorganic monobasic iodide salt and an oxidizing agent which is buffered to a pH of 4.0 to 8.0. The eye treating compositions have an osmolarity between 140 and 180 mOsm / l and are hypotonic.

Processes for the production of chlorinated alkanes are provided. The present processes comprise catalyzing the chlorination of a feedstream comprising one or more alkanes and / or alkenes with a catalyst system comprising one or more inorganic iodine salts and / or lower than conventional levels of elemental iodine and at least one Lewis acid. The processes are conducted in a nonaqueous media, and so, the one or more inorganic iodine salts are recoverable and / or reusable, in whole or in part.

The invention discloses a method for recovering iodine, which is coupled with the electrochemical method to control the redox level, and recovers the inorganic iodine in liquid waste. A sodium hypochlorite solution is used for oxidizing and recovering organic iodine. The iodide ion content of the recovered liquid waste is about 0.3%. The iodine in the recovered liquid waste is gathered and recovered by using strong basicity anion exchange resin. The iodate ion is reduced to iodine by the method in one step. The complicated operations of reducing iodate ions into iodide ions firstly and then oxidizing into iodine are prevented. The usage amount of the oxidizing and reducing agents is reduced. Therefore, the cost is reduced, and the method for recovering iodine can bring high economic benefit to industrial production.

According to a method for producing an inorganic iodide in accordance with the present invention, it is possible to efficiently produce a highly pure inorganic iodide by reacting a hydrogen iodide gas with an inorganic base compound by bringing the hydrogen iodide gas into contact with the inorganic base compound. As such, it is possible to provide a simple and efficient method for producing an inorganic iodide.

The invention discloses a method for recovery iodine from wastewater in medicine production. The method comprises the following steps: acidifying the wastewater in the medicine production with an acid, then reducing inorganic iodine with a reductant, adding a composite oxidant for oxidizing organic iodine, continuously dropwise adding hydrogen peroxide to oxidize iodine negative ions, and simultaneously introducing water vapor to heat and bubble, such that elementary iodine overflows in purple haze; continuously heating till no purple haze overflows, introducing the purple haze to an absorption container, reducing the elementary iodine with a reducible absorption solution, oxidizing the absorption solution with hydrogen peroxide, and filtering and separating to obtain coarse iodine. The acid for acidifying is any one of sulfuric acid, hydrochloric acid or nitric acid; the reductant is one or any two of or a mixture of iron powder, zinc powder, sodium hydrogen sulfite, sodium sulfite or sodium thiosulfate; the composite oxidant is one of C / Fe<2+> or Fe / Fe<3+> in a mixture; the reducible absorption solution is any one of a sulphurous acid solution, a sodium hydrogen sulfite solution or a sodium sulfite solution.

The invention relates to a manufacture method for electrolyte of dye sensitization TiO2 nanometer crystal porous membrane solar cell. It includes the following steps: mixing organic solvent containing inorganic iodine salt, iodine, and additive, or iron liquid electrolyte with 4-vinyl pyridine and the high molecule copolymer of acrylonitrile and crosslinking agent; directly coating onto TiO2 nanometer crystal film electrode surface; packaging with Pt sheet counter electrode or platinum carrying counter electrode to form cell, taking cross linking solidifying reacting while heating, the product would be gained. The invention has simple method, low viscosity of electrolyte before solidification reaction, and is benefit for improving cell photoelectric conversion efficiency.

The present invention relates to an organic biological iodine. It is mainly composed of 96% of 1-iodotyrosine, 2% of 2-iodotyrosine and 2% of sodium alginate. Sand organic biological iodine contains no any chemical inorganic iodine, and is similar to the thyroxine in endocrine thyroid gland of human body, after having been absorbed into human body it can participate in the metabolism in molecular form, and it is safe and stable in the iodine-supplementing effect, and does not result into iodism reaction.

The invention relates to a radiation environment iodine automatic sampling device which comprises a main casing. A vacuum draught fan is arranged in the main casing and is connected with an air inlet pipeline, an air exhaust pipe and a control device. The automatic sampling device is characterized in that the air inlet pipeline is connected with an iodine sampling cabin; the iodine sampling cabin comprises a sampling casing; an iodine sampling head is arranged in the iodine sampling cabin and is connected and communicated with the air inlet pipeline; an iodine sampling device is arranged in the iodine sampling head, and the iodine sampling head is communicated with the atmosphere; the iodine sampling device comprises a lower supporting cavity; an iodine sampling carbon box is arranged in the lower supporting cavity; and an upper cavity is arranged on the lower supporting cavity and connected with an iodine sampling filtering membrane device. The invention has the advantages of compact structure, small volume, convenient installation and carrying and convenient operation; a three-stage iodine automatic filtering and sampling device is used, therefore the particulate iodine, inorganic iodine and organic particulate iodine in the air can be sampled; the elemental iodine, the non-elemental inorganic iodine and the non-element organic iodine are collected; and the device can be integrated in a radiation monitoring station to carry out comprehensive monitoring on the atmosphere.

Provided are a novel dye-sensitized solar cell using an organic solvent-free electrolyte and capable of exhibiting excellent photoelectric conversion characteristics, and a novel and practical organic solvent-free electrolyte for such a dye-sensitized solar cell. An organic solvent-free electrolyte containing a conductive carbon material, water, and an inorganic iodine compound is used as an electrolyte for a dye-sensitized solar cell. The organic solvent-free electrolyte is preferably a quasi-solid electrolyte and the conductive carbon material in the organic solvent-free electrolyte has a surface area of preferably from 30 to 300 m2 / g.

The invention relates to the technical field of natural medicine extraction detection and provides a joint extraction and detection method of inorganic iodine and organic iodine in kelp, thereby solving a problem that several kinds of iodine can not be measured simultaneously by the traditional iodine extraction detection process. The inorganic iodine is potassium iodide and the organic iodine is3-iodo-L-tyrosine and 3,5-diiodo-L-tyrosine. Moreover, the method comprises the following steps: weighing 1.0g of mashed kelp particle samples precisely; adding 10mL of ionic liquid and adjusting thepH value to be 5.0 to 7.0; carrying out extraction for 15 to 75min in ultrasound equipment at a temperature of 40 DEG C; carrying out centrifugation and collecting supernate; and carrying out ultra-high-performance liquid chromatogram analysis and detection. According to the invention, the ILs is used as the LSE extraction solvent; the biologically active iodine is extracted from a complex samplematrix rapidly and efficiently by using a simple and economic device during the single process; and I<->, MIT and DIT inorganic and organic iodine in actual samples can be extracted and detected simultaneously. The extraction time is short; the detection limit is low; the green and environment-friendly effects are good; and the satisfying extraction efficiency is obtained.

The invention discloses a two-dimensional I-doped BiOIO3 / g-C3N4 composite catalyst and a preparation method and application thereof. Urea is used as a raw material to prepare g-C3N4 nano-sheets through calcination; a bismuth salt and an oxidized iodine salt are used as raw materials to prepare BiOIO3 nano-sheets through a hydrothermal reaction; then the BiOIO3 nano-sheets are reacted with an inorganic iodide salt to prepare I-doped BiOIO3 nano-sheets; the I-doped BiOIO3 nano-sheets and the g-C3N4 nano-sheets are subjected to a solvothermal reaction to prepare the two-dimensional I-doped BiOIO3 / g-C3N4 composite catalyst. The two-dimensional I-doped BiOIO3 / g-C3N4 composite photo-catalyst promotes the separation efficiency of photo-generated carriers in I-doped BiOIO3 and g-C3N4, and effectively increases the survival life of photo-generated charges, and thereby the photo-catalytic activity is promoted. At the same time, expensive metal elements in metal semiconductor materials are replaced, and thereby the preparation cost is greatly reduced.

Processes for the production of chlorinated alkanes are provided. The present processes comprise catalyzing the chlorination of a feedstream comprising one or more alkanes and / or alkenes with a catalyst system comprising one or more inorganic iodine salts and / or lower than conventional levels of elemental iodine and at least one Lewis acid. The processes are conducted in a nonaqueous media, and so, the one or more inorganic iodine salts are recoverable and / or reusable, in whole or in part.

The invention discloses a preparation method of trifluoroethylamine. The preparation method comprises the following steps: amination reaction: taking CHF2CH2X as a raw material, and feeding ammonia gas in the presence of a solvent and a catalyst to ammonify so as to generate trifluoroethylamine; and rectification: rectifying the ammonified product to obtain a finished product, filtering kettle liquid to obtain ammonium chloride as a by-product, and recycling filtrate used as the solvent of amination reaction. The catalyst is inorganic iodide, and the solvent is a frequently used organic solvent DMF or NMP. The purity of the prepared finished product is greater than or equal to 99.5%, and the yield of the finished product is greater than or equal to 90%.

The invention belongs to the field of nuclear safety protection, and relates to a water solution for absorbing nuclear accident release matter. The water solution contains Na2S2O3 with the mass percent concentration of 0.1%-0.5% and NaOH with the mass percent concentration of 0.2%-1.0%. The water solution has good stability, and a simulation experiment shows that when serious accidents happen to a nuclear power plant and melted cores melt through a pressure container and are in contact with a concrete bottom plate, the water solution can be used for effectively filtering out and absorbing aerosol, inorganic iodine and organic iodine released thereout.

The invention discloses a surface modification method for silver powder of solar front silver paste. The method comprises the following process steps that the silver powder is put in a rotary chemical vapor deposition reaction cavity, surface modifiers such as organic acid, organic amine, inorganic iodine and the like are taken as reaction precursors, high-purity Ar is taken as current-carrying gas and diluent gas, and at a certain rotating speed, temperature, pressure intensity and time, uniform coating modification of the surface of the silver powder is realized. According to the surface modification method, through the rotary chemical vapor deposition technology, the surface of the modified silver powder is smooth, the modified silver powder has the characteristic of being uniformly coated with one or more functional groups, and the printing resolution or the electrical property of the front silver paste can be improved.

The invention relates to a preparation method and application of seaweed organic iodine powder and a seaweed organic iodine salt. Through immersion of seaweed and laver in warm water, hyperfiltration, macromolecular impurity removal, seaweed iodine extraction, isoelectric point precipitation, chromatography separation, carbon column adsorption and ethanol elution, a light yellow or white ultra-concentrated seaweed organic iodine powder product is obtained. The seaweed organic iodine powder is added into iodine-free table salt according to a ratio so that the seaweed organic iodine salt is prepared. The seaweed organic iodine salt product prepared from the seaweed organic iodine powder has the advantages of pure natural component, no toxic or side effect, iodine supplement effect better than that of the inorganic iodine salt, easy absorption, and safety better than that of the inorganic iodine salt. The seaweed organic iodine powder can be processed into an iodine tablet specially for pregnant and lying-in women and seaweed organic iodine-containing infant food made of rice-flour, sugar , etc.

The invention discloses amino acid algae iodine salt and a preparation method thereof. The amino acid algae iodine salt comprises, by weight, 0.1-100 parts of amino acid algae iodine solutions, 800-1200 parts of edible salt, 0-200 parts of fruit-vegetable powder, 0-150 parts of marine animal products, 0-300 parts of cereals, 0-150 parts of spices, 0-150 parts of sugar, 0-300 parts of aginomoto, 0-100 parts of acid hydrolyzed vegetable protein flavoring powder, 0-100 parts of acid hydrolyzed vegetable protein flavoring solutions and 0-100 parts of yeast extracts. An ingredient mixture is mixed with the edible salt, and a mixture is obtained; and the amino acid algae iodine solution is added into a spray can and sprayed into the mixture, then the mixture is dehydrated through drying, and the amino acid algae iodine flavoring salt is obtained. According to the amino acid algae iodine salt and the preparation method thereof, an iodine enhancer used for compounded salt and salt-substitute products, namely the amino acid algae iodine solution, is added, the amino acid content is rich, nutritive value is high, the delicate flavor is strong, the taste is mild, small molecule peptide and inorganic iodine are contained, and the amino acid algae iodine salt is a healthy salt product; and in addition, the amino acid algae iodine flavoring salt prepared by the invention can replace the common edible salt, original cooking methods are not changed, and using is convenient and easy.

The present disclosure relates to the method for the production of iodinated proteins to be used as biologically active substances and can be used for preventing and treating of the iodine deficiency conditions in humans and animals, in particular, when producing food products, biologically active food supplements, medicinal agents and veterinary preparations and foodstuffs. To this end, a method for the production of iodinated proteins and / or their hydrolyzates is proposed, comprising fermentation of the source protein raw material with an inorganic iodine aqueous solution by introducing therein a buffer mixture of reagents with a reaction mixture of enzymes immobilized on semipermeable membranes or on inert supports. The invention provides for the production of proteins with a determinated iodinated tyrosine amino acid residues content.

The invention relates to a molecular sieve deiodination agent preparation method and a molecular sieve deiodination agent. The method comprises: loading a molecular sieve on an ion exchange column; dissolving a non-silver metal salt in deionized water to form a salt solution containing non-silver metal ions; making the salt solution containing the non-silver metal ions continuously pass through the ion exchange column filled with the molecular sieve at a temperature of 60-100 DEG C, wherein the passing time is controlled at 20-30 h, so that the non-silver metal ions are loaded in the molecularsieve; and washing the molecular sieve with deionized water, taking out the molecular sieve loading the non-silver metal ions, and drying to obtain the molecular sieve deiodination agent containing the non-silver metal ions. According to the invention, the molecular sieve deiodination agent is low in cost, and can react with the organic iodine or inorganic iodine in acetic acid to generate iodideprecipitate, so that the iodine content in acetic acid can be reduced by 50-95%; and by combining the molecular sieve deiodination agent and the existing silver-loading ion exchange resin or silver-loading molecular sieve, the use amount of the silver-containing deiodination agent can be greatly reduced, so that the iodine element in acetic acid can meet the specified requirements, and the adverse effects on the subsequent industrial production taking the acetic acid as the raw material are avoided.

The invention provides a method for preparing 2-iodine-5-phenylpyridine and relates to the field of an industrial production technology of 2-iodine-5-phenylpyridine. The method comprises the following steps: selecting 2-chlorine-5-phenylpyridine as an initial raw material, carrying out a halogen replacement reaction between 2-chlorine-5-phenylpyridine and inorganic iodine salt in the presence of a catalyst and a ligand, and simply processing to obtain 2-iodine-5-phenylpyridine with high purity and high yield. The method provided by the invention requires no high-temperature and high-pressure reaction, has a safe and stable technology and is suitable for large-scale production. The raw materials used are noncorrosive to production equipment, and solvents used all can be recovered and reused. Thus, the method accords with the concept of green chemistry. The harm of environmental pollution is reduced, and production cost is saved. Purity and yield of the product are both high, thus effectively raising benefits of a manufacturing enterprise.

The present invention relates to a composition, textile, and mask for reducing the inhalation of pollutants. The composition includes an aqueous solution of an inorganic iodide compound, a metal phthalocyanine, and a polymeric binder. The inorganic iodide can be cuprous iodide, the metal phthalocyanine can be iron phthalocyanine, and the polymeric binder can be polyvinylpyrrolidone or polyvinyl alcohol. This pollutant-inactivating composition neutralizes pollutants such as nitrogen dioxide, sulfur dioxide, ozone, volatile organic compounds and other unpleasant airborne agents, without requiring elevated temperatures or bulky canisters containing adsorbents. Optionally, a humectant can also be incorporated into the coating solution to retain moisture in the active filter matrix, which enhances the activity of the composition to inactivate oxidizing gases and other toxic constituents of air pollution.

The invention relates to a radiation environment iodine automatic sampling device which comprises a main casing. A vacuum draught fan is arranged in the main casing and is connected with an air inlet pipeline, an air exhaust pipe and a control device. The automatic sampling device is characterized in that the air inlet pipeline is connected with an iodine sampling cabin; the iodine sampling cabincomprises a sampling casing; an iodine sampling head is arranged in the iodine sampling cabin and is connected and communicated with the air inlet pipeline; an iodine sampling device is arranged in the iodine sampling head, and the iodine sampling head is communicated with the atmosphere; the iodine sampling device comprises a lower supporting cavity; an iodine sampling carbon box is arranged in the lower supporting cavity; and an upper cavity is arranged on the lower supporting cavity and connected with an iodine sampling filtering membrane device. The invention has the advantages of compactstructure, small volume, convenient installation and carrying and convenient operation; a three-stage iodine automatic filtering and sampling device is used, therefore the particulate iodine, inorganic iodine and organic particulate iodine in the air can be sampled; the elemental iodine, the non-elemental inorganic iodine and the non-element organic iodine are collected; and the device can be integrated in a radiation monitoring station to carry out comprehensive monitoring on the atmosphere.

The invention relates to an analysis method for determining content of iodine in food, and in particular relates to an analysis method for detecting the iodine by utilizing gas chromatography, belonging to the field of analysis chemistry. The gas chromatography method for determining the content of iodine in food is characterized in that a potassium carbonate-zinc sulfate ashing method is used for preprocessing a sample, and the gas chromatography is used for detecting the content of iodine. The gas chromatography method has beneficial effects that 1. the potassium carbonate-zinc sulfate ashing method is used for preprocessing the sample, so that the oxidization decomposition of organic matters can be promoted, organic iodine is converted into inorganic iodine, ashing is thorough, the volatile loss also can be reduced, and the detection recovery rate can be improved; 2. inorganic iodine and organic iodine in the food can be simultaneously determined, and the real content of iodine in the food can be accurately reflected; 3. the application range is wide, and the method is suitable for detecting the iodine in multiple food; 4. the detection limit of the iodine is 2.5ng.g<-1> and is obviously lower than the national standard; 5. the method is good in repeatability, and the labeling recovery rate can meet the analysis and determination requirement.

The invention relates to an anus injecting iodine intestinal tract contrast agent and application thereof in a CT virtual colon-proctoscope contrast agent. The iodine contrast agent is an iodine water preparation and comprises an inorganic iodine agent, an organic iodine agent, other iodine compounds and an iodine-contained food; and the iodine-contained concentration is between 5g / L and 180g / L. By adding water for dissolving the iodine contrast agent and adding or not adding an isoosmotic adjusting agent and an antiallergic medicine, the contrast agent is prepared. The application of the anus injecting iodine intestinal tract contrast agent in preparing the CT virtual colon-proctoscope contrast agent does not need to clean the intestinal tract in advance and has the advantages of reduction of pain of an examined person, lowering of pain and side effects on a patient probably caused by injection twice, improvement of effect and accuracy of virtual colon-proctoscope inspection and effective separation of residues in the intestinal tract and the intestinal wall under the condition of excrement residual, and a preparation method of the iodine contrast agent is simple.

The invention discloses a synthetic method of a 1-iodo-alkyne compound. The preparation method comprises the following steps: in an aerobic environment, mixing terminal alkyne, soluble inorganic iodized salt, sodium phenylsulfinate or a derivative thereof with an alcohol solvent, and reacting to obtain the 1-iodo-alkyne compound. According to the method, common iodide salt is used as an iodine source, and a high-valence iodine compound or elemental iodine does not need to be added; oxygen in the air is used as an oxidizing agent, and other oxidizing agents such as high-valence metals, high-valence iodine compounds, peroxides or persulfides do not need to be added; non-toxic or low-toxic alcohol is used as a solvent, and compared with an existing method, the solvent is more environmentallyfriendly; the synthesis method has the advantages that the reaction temperature is normal temperature, the reaction system does not need water-free or oxygen-free requirements, the reaction conditionsare simple, and the operation is easy; and the method disclosed by the invention has the advantages of wide substrate application, cheap and green raw materials, simple and mild reaction conditions,single product, easiness in purification and the like, and has extremely high economic value and application prospect.