35 results about "ORGANIC IODIDE" patented technology

A method of removing organic iodides from non-aqueous organic media includes contacting the organic media with a silver or mercury-exchanged cationic ion exchange substrate at a temperature greater than about 50° C. The method is particularly effective for removing high molecular weight organic iodides from organic media such as acetic acid or acetic anhydride. Particular species removed include decyl iodides and dodecyl iodides from organic media such as acetic acid.

A wet recycling method for impregnated active carbon used to remove radioactive organic iodide in a nuclear power plant by extracting impregnated substance and radioactive organic iodide from the used impregnated active carbon with an acetonitrile solution and reproducing active carbon to be used in preparing impregnated active carbon, the filtered extractive solution being distilled to obtain pure acetonitrile for the use purpose as an extractive solution, the impregnated substance and radioactive organic iodide extracted in a small amount of solid, thus reducing the volume of the waste impregnated active carbon greatly to decrease solid waste material and at the same time recycle materials.

The preent invention is zeolite deiodination adsorbent with high silver carrying amount for eliminating iodide in acetic acid and its preparation process. The adsorbent is superior to available ones, which are high in cost and have complicated production process. The adsorbent of the present invention is prepared with one kind of natural mineral ziolite, named stilbite, and through denaturing and cationic exchange. It has silver carrying amount up to 26%, and may be used in eliminating organic iodide, inorganic iodide and molecular iodine.

A process for preparing the ZSM-5 zeolite adsorbing containing more carried silver (20%) for removing iodide from acetic acid includes such steps as pulverizing H-ZSM-5 zeolite with the ratio of SiO2/Al2O3=15-30, adhering for shaping, crystallizing, and silver ion exchange.

The invention belongs to the chemical technical field and relates to a high silver supported zeolite molecular sieve acetate deiodinase adsorber and a preparation method thereof. In the adsorber, the sizes of zeolite cavity openings are respectively 0.66*0.71 nanometers and 0.56*0.56 nanometers, and the adsorber is provided with characteristic X-ray diffraction lines in a BEA (Background Equivalent Activity) type zeolite structure. The deiodinase adsorber is prepared by the steps that saled sodium type zeolite molecular sieve powder with two-dimensional twelve oygen membered ring cavity openings is formed through binder, is in in-situ hydrothermal strengthening treatment to generate chemical bonds and then is treated by ion exchange sodium removal and silver carrying. The adsorber has the advantages of high crystallization degree, strong particle strength, high silver supported and strong adsorption capacity to organic iodide, inorganic iodide and molecular iodide with different sizes contained in strong acidic medium, can enable the total iodide content in product acetic acid after deiodination treatment by the adsorber to be lower than 5ppb and is suitable for being used as raw materials for synthetizing vinyl acetate.

The invention is a kind of high intensity compound zeolite deiodination sorbent and preparation method. The sorbent is prepared from a kind of natural mineral zeolite - stilbite (its Chinese code name is CXN, its English code name is STI, and its scientific name is stilbite); through positive ion exchange produce H-STI, mix with artificial compounded commodity H-ZSM-5 zeolite, add cementing agent to molding, after strengthening process, then through silver carrying to produce. The small ball of the sorbent of 1 mm diameter can get 40 Newton per grain. The sorbent can effectively eliminate the organic iodide, inorganic iodide and idodine molecule in the car-bonyl compounded products.

The invention provides the large aperture zeolitic adsorbent and preparing method. The method comprises the following steps: hydrothermal synthesizing the zeolitic in Na2O-SiO2-Al2O3-H2O colloidal system, possessing the X-ray spectrum, removing the sodium with positive ion exchange, forming with binding agent and modifying with aqueous vapor. The average pore size of adsorbent is 11 nanometers, and the adsorbent is used to remove micro inorganic or organic iodide and iodine from acid medium.

The organic liquid medium deiodinating process with no-adhesive zeolite adsorbent includes: filling no-adhesive zeolite adsorbent in fixed bed, making the iodine-containing medium contact with no-adhesive zeolite adsorbent containing at least one kind of exchanging metal cation, controlling the temperature and space velocity of the organic liquid medium passing through the adsorbing bed to lower the total iodine content in the iodine containing medium to less than 10 ppb. The adsorbent is prepared with hydrogen type zeolite powder with SiO2/Al2O3 ratio of 15-30 and through adhering to form and crystal conversion. The adsorbent can eliminate organic and inorganic iodide and molecular iodine from organic medium effectively. The method of the present invention is suitable for eliminating iodide from various organic matters.

The invention discloses an electrolyte for dye sensitized solar cells. The electrolyte comprises organic iodide, elementary iodine, additive and solvent, wherein the organic iodide is prepared through reaction of 1-alkyl substituted imidazole and 2-alkyl iodides. The electrolyte has stable physical and chemical properties and low cost and can be used for replacing lithium iodide which is high in price and bad in stability. By using the electrolyte provided, the stability of the dye sensitized solar cells can be improved, the cost is reduced, and benefit is brought to the industrialized application of the cells.

An acid-resistant zeolite adsorbent with characteristic X-ray diffraction spectrum is prepared through hydrothermal synthesizing of zeolite in Na2O-SiO2-Al2O3-H2O colloidal reactant system, cationic exchanging for removing Na, adding adhesive, shaping and steam ageing. Its advantages are high resistance to acid, high strength and uniform pore structure.

The method of removing iodine and iodide impurity features that the medium containing iodide is made to contact with one kind of adsorbent to eliminate its iodide. The adsorbent is prepared with natural mineral zeolite, such as STI, and through modification and cation exchange. The adsorbent is stable in the medium to be processed and can eliminate organic and inorganic iodide and molecular iodine from the medium effectively. The adsorption conditions include temperature of 18-100 deg.c, and liquid space velocity of 1-20 /hr and the processed liquid has total iodine content less than 10 ppb.

Novel radioactive iodide molecular traps, in which one or more metal atoms are functionalized by coordinating to an amine containing two or more nitrogens, and methods of using the molecular traps to capture radioactive iodide.

The present invention relates to polyamide resin that contains an non-ionic organic iodide, and has excellent long-time melting retention stability. The present invention relates to polyamide resin that contains a diamine unit and a dicarboxylic acid unit with 50-100 mol% being an oxalic acid unit, and the polyamide resin contains the non-ionic organic iodide, and with respect to the weight of the polyamide resin, the iodine content is 20-6000 ppm. The polyamide resin has excellent processability. The polyamide resin can be used in resin molded products, fiber, films and the like in automobile parts, mechanical parts and the like.

The invention provides acetylthiocholine iodide and a preparation method thereof. The preparation method comprises the following steps: step S1, dissolving a dimethylamino ethane compound in alkali toobtain an alkaline aqueous solution; step S2, adding a thioacetic acid compound into the alkaline aqueous solution to subject the thioacetic acid compound and the dimethylamino ethane compound to a thioreaction to generate (2-(dimethylamino)ethyl)ethanethioate; S3, separating the (2-(dimethylamino)ethyl)ethanethioate, and preparing an organic solution of the (2-(dimethylamino)ethyl)ethanethioate;and S4, dropwise adding an organic iodide into the organic solution of the (2-(dimethylamino)ethyl)ethanethioate for an iodination reaction so as to generate the acetylthiocholine iodide. According to the preparation method provided by the embodiment of the invention, the high-purity acetylthiocholine iodide can be obtained, and the titration content, the melting point, the clarity and other dataof the product are very excellent. The method is simple in operation, good in safety, suitable for industrial production, easy in raw material obtaining and low in cost.

The present invention relates to method and an apparatus for quantitatively analyzing a gaseous process stream, in particular a stream from a process for producing ethylene carbonate and/or ethylene glycol, in particular where such stream comprises gaseous organic iodides.

A method for obtaining a salt with a general formula: RxNI, wherein: RxN is an organic cation (RxN+), R represents substituents (R-) independently selected from a group consisting of organic substituents: R1-, R2-, R3- and hydrogen (H-), x is a number of the substituents R- directly linked with the nitrogen (N) atom in the organic cation RxN+, wherein x is 3 or 4, I is an iodide anion (I-). The method comprises: preparing a reaction mixture comprising the steps of: synthesizing hydrogen iodide (HI) in situ by mixing molecular iodine (l2) with formic acid (COOH) in a molar ratio of molecular iodine (l2) : formic acid (COOH) of no less than 1.01:1, in a solvent medium, introducing into the solvent medium a compound being a donor of organic cation RxN+ in an amount providing the molar ratio of the donor of organic cation RxN+ : molecular iodine (l2) of no less than 1.01:1, and maintaining the reaction mixture at a temperature of not less than 20 DEG C for the time necessary to obtain the reaction product being the salt with the general formula RxNI. The obtained product is a substrate for synthesis of perovskites.

Disclosed herein are copolymers of tetrafluoroethylene and n-alkyl trifluorovinyl ether which further contain either curesite repeat units and/or iodine. Such curesite repeat units, upon exposure to free radicals, may crosslink the copolymers. The iodine is introduced by carrying out free radical polymerization in the presence of an organic iodide chain transfer agent. The polymers according to the invention are especially useful as elastomers and/or as molding resins for articles or parts that may be exposed to a basic environment. The preparation of such polymers by aqueous emulsion polymerization is also disclosed.

Iodine transfer radical polymerization of an ethylenically unsaturated monomer comprising (meth)acrylic acid, salt thereof, or combination thereof, in the presence of a radical polymerization initiator, an organoiodide, and a solvent, is a useful method for making (meth)acrylic acid polymers. The amounts of components utilized can be 2 to 100 equivalents of acrylic acid and 2 to 100 equivalents of sodium acrylate, both dissolved in water to form a 15 to 50 weight percent solution, based on the total weight of the acrylic acid, sodium acrylate, and water; 0.05 to 1 equivalent of an azo polymerization initiator, 1 equivalent of an organoiodide; and 0 to 3 equivalents of an iodide salt. (Meth)acrylic acid polymer solutions are made by these methods. The (meth)acrylic polymers are useful as dispersants.