423 results about "Alkali metal halide" patented technology

When sulfur oxides are present in mercury vapor-containing gas, the adsorption of mercury vapor by activated carbon is inhibited. Therefore, there has been demand for development of a method for effective adsorption removal of mercury vapor even in the coexistence of sulfur oxides.Efficient and long-term removal of mercury vapor was made successful by contacting an activated carbon adsorbent consisting of 100 parts by weight of activated carbon impregnated with 5 to 70 parts by weight of only an alkali metal halide, with mercury vapor in sulfur oxide-containing gas.

A method of growing single-crystals of a cubic (zinc blende) form of gallium nitride, the method comprising the steps of: placing into a reaction tube or acid resistant vessel a gallium source, anhydrous ammonia, an acid mineralizer and a metal halide salt selected from the group consisting of alkali metal halides, copper halides, tin halides, lanthanide halides and combinations thereof; closing said reaction tube or vessel; heating said reaction tube; cooling said reaction tube or vessel; and collecting single-crystals of cubic (zinc blende) form of GaN; wherein said reaction tube or vessel has a temperature gradient with a hot zone of at least 250° C., wherein said reaction tube or vessel has a temperature gradient with a cool zone of at least 150° C., and wherein said acid mineralizer has a sufficient concentration to permit chemical transport of GaN in said reaction tube or vessel from said hot zone to said cool zone due to said temperature gradient within said reaction tube or vessel.

The invention provides an economic process for the manufacture of 1,3,3,3-tetrafluoropropene (HFO-1234ze) by a two stage process. A vapor phase hydrofluorination of 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd) into 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) and / or 1,1,1,3,3-pentafluoropropane (HFC-245fa) is conducted, followed by the thermal dehydrochlorination of HCFC-244fa and dehydro fluorination of HFC-245fa into HFO-1234ze in the presence of a catalyst which comprises one or more of alkali metal halides, alkaline earth metal halides, halogenated metal oxides, zero oxidation state metals, zinc halides, palladium halides, and activated carbon.

The invention relates to preparation methods of bis(fluorosulfonyl)imide and alkali metal salts thereof. The bis(fluorosulfonyl)imide is prepared by subjecting bis(chlorosulfonyl)imide to react with a fluorinating agent namely hydrogen fluoride. The alkaline metal salts of bis(fluorosulfonyl)imide is prepared by subjecting bis(chlorosulfonyl)imide and alkali metal halides to react with hydrogen fluoride taken as the fluorinating agent and the solvent. The preparation methods can reduce the raw material costs, reduce the material consumption and generation of wastes, improve the raw material utilization rate, product yield, and product purity; moreover, the product purification is easier, the preparation technology process is more concise and more efficient, and the preparation methods provides a very good technical foundation for massive industrial production of bis(fluorosulfonyl)imide and alkali metal salts thereof.

The invention provides a cathode for an electrochemical cell comprising: a first particulate material having particles comprising a mixture of at least one alkali metal halide and at least one metal; and a second particulate material comprising at least one alkali metal halide, wherein the second particulate material has a particle size smaller than that of the first particulate material.

A metal halide lamp (10) includes a discharge vessel (12) which may be formed of a ceramic material. The vessel defines an interior space (16). An ionizable fill (17) is disposed in the interior space. The ionizable fill includes an inert gas, mercury, and a halide component. The halide component includes an alkali metal halide, an alkaline earth metal halide component, and optionally at least one of a rare earth halide and a Group IIIA halide. The alkaline earth metal halide component includes at least one of a barium halide and a strontium halide. At least one electrode (18, 20) is positioned within the discharge vessel so as to energize the fill when an electric current is applied thereto. The lamp having a wall loading, when energized, which is sufficient to maintain an active tungsten halogen cycle.

The invention discloses a preparation method of metal silver nanowires with adjustable length and diameter. The method comprises the following steps: dissolving silver nitrate in polyhydric alcohol for preparing solution; dissolving an alkali metal halide and a reducing compound in the polyhydric alcohol for preparing the solution; mixing the two types of the solution, and fully reacting under stirring to get the mixed solution; heating the polyhydric alcohol to 120-160 DEG C, dripping into the mixed solution, keeping the temperature and reacting for 15-44 hours; and performing centrifugal separation on reaction solution after the reaction, and washing lower-layer precipitate to get the silver nanowires. According to the preparation method, inert gas does not need to be introduced for protection, the reaction temperature is low, the preparation process is simple, the yield is high, the cost is low, and the insufficiencies of complex preparation procedure, low yield, high cost and the like in the template plate, the seeding method, the traditional polyhydroxy reduction method and the like can be overcome, thereby having important significance for large-batch industrial production and actual application thereof of the silver nanowires.

A composition is provided that includes a ternary electrolyte having a melting point greater than about 150 degree Celsius. The ternary electrolyte includes an alkali metal halide, an aluminum halide and a zinc halide. The amount of the zinc halide present in the ternary electrolyte is greater than about 20 mole percent relative to an amount of the aluminum halide. An energy storage device including the composition is provided. A system and a method are also provided.

Scintillation materials of this invention have an alkali halide host material, a (first) scintillation dopant of various types, and a variety of second dopants (co-dopants). In another embodiment, the scintillation materials of this invention have an alkali halide host material, a (first) scintillation dopant of various types, a variety of second dopants (co-dopants), and a variety of third dopants (co-dopants). Co-dopants of this invention are capable of providing a second auxiliary luminescent cation dopant, capable of introducing an anion size and electronegativity mismatch, capable of introducing a mismatch of anion charge, or introducing a mismatch of cation charge in the host material.

The vacuum evaporation method provides a heating element between an evaporation source of a film-forming material and a substrate; and forms a phosphor layer of an alkali halide-based phosphor on a surface of said substrate by vacuum evaporation while causing the heating element to generate heat at a temperature t (° C.) satisfying Formula (1):T−200≦t<T   (1)where T is a boiling point (° C.) of the film-forming material. This method is capable of using the film-forming material making up the phosphor layer with higher efficiency owing to a heating element while preventing the substrate and the phosphor layer from being adversely affected by heat from the heating element.

A process for preparing cyclic carbonate features that catalytic cycloaddition reaction of CO2 on epoxy compound at 100-140 deg.C and 1.5-4.5 MPa for 4-8 hrs under the existance of the catalyst whichis composed of azacyclic compound (halogenated alkylpyridine or halogenated 1,3-dialkyl imidazole) and non-metal halide, and the cocatalyst which is alkali-metal halide or ammonium tetrebutyl bromide. Its advantages are high catalytic activity, smooth reaction condition, easy separation of resultant from catalyst, and cyclic use of catalyst.

A method for producing a high-purity difluorophosphate by simple processes; a method for producing an electrolyte solution using a difluorophosphate obtained by the method; an electrolyte solution; and a secondary battery. Specifically disclosed is a method for producing a difluorophosphate, which comprises the following step (1) or (2). (1) A step wherein (A) at least one substance selected froma group consisting of phosphorus oxo acids, oxo acid anhydrides and oxyhalides is reacted with (B) a hexafluorophosphate in the presence of hydrogen fluoride. (2) A step wherein at least one halide selected from a group consisting of alkali metal halides, alkaline earth metal halides, aluminum halides and onium halides is reacted with difluorophosphoric acid in the presence of a hexafluorophosphate. Also disclosed are a nonaqueous electrolyte solution containing the thus-obtained difluorophosphate, and a nonaqueous electrolyte secondary battery comprising the nonaqueous electrolyte solution.

The invention relates to an alkali halide-doped perovskite light-emitting diode. The alkali halide-doped perovskite light-emitting diode comprises a substrate, a hole transmission layer, an active light-emitting layer, an electron transmission layer, an electrode modification layer and an electrode, wherein the thickness of the active light-emitting layer is 5-100 nanometers, the active light-emitting layer comprises perovskite and an alkali halide doped in the perovskite, the molecular formula of the perovskite is one or more of CsPbCl<x>Br<3-x>, CsPbBr<x>I<3-x>, MAPbCl<x>Br<3-x>, MAPbBr<x<I<3-x>, FAPbCl<x>Br<3-x> and FAPbBr<x>I<3-x>, x is equal to 0, 1, 2 or 3, and the alkali halide is one or more of LiCl, NaCl, KCl, RbCl, LiBr, NaBr, KBr, RbBr, LiI, NaI, KI and RbI. The invention also provides a fabrication method of the alkali halide-doped perovskite light-emitting diode. The fabrication method comprises the steps of forming the hole transmission layer or the electron transmissionlayer o the substrate; modifying an alkali halide-containing perovskite precursor solution used as the active light-emitting layer on the hole transmission layer of the electron transmission layer; sequentially forming the electron transmission layer, a negative electrode modification layer and a negative electrode on the active light-emitting layer or sequentially forming the hole transmission layer, a positive electrode modification layer and a positive electrode on the active light-emitting layer; and performing package.

A composition of the positive electrode comprises at least one electroactive metal, at least one iodide of at least one transition metal, a first alkali metal halide, and an electrolyte salt having a melting point of less than about 300° C. The at least one electroactive metal is selected from the group consisting of titanium, vanadium, niobium, nickel, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead, iron, and zinc. An electrochemical cell and a method for making an electrochemical cell are also presented.

A process for production of nickel oxyhydroxide by electrolytic oxidation of nickel hydroxide in the presence of an alkali metal halide. The nickel oxyhydroxide is produced by adding nickel hydroxide particles to an aqueous solution of an alkali metal halide and stirring the mixture to prepare a nickel hydroxide slurry, and then converting a portion of the nickel hydroxide to nickel oxyhydroxide by electrolytic oxidation in the presence of the alkali metal halide.

A cathode composition is provided. The cathode composition includes at least one electroactive metal, wherein the electroactive metal is at least one selected from the group consisting of titanium, vanadium, niobium, molybdenum, nickel, iron, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead and zinc; a first alkali metal halide; an electrolyte salt comprising a reaction product of a second alkali metal halide and a metal halide, wherein the electrolyte salt has a melting point of less than about 300 degrees Centigrade; and a metal chlorosulfide compound having a formula (I) M1M2p+1SnCl4+3p-2n wherein “M1” is a metal selected from group IA of the periodic table, “M2” is a metal selected from group IIIA of the periodic table, “p” is 0 or 1, and “n” is equal to or greater than 0.5. An article and an energy storage device comprising the cathode composition is provided. A method of forming the energy storage device is provided.

This invention relates to a producing technology for pure KCl, which takes KCl with the purity below 98% as the raw material characterizing in including steps of dissolving in fresh water, sedmentation and filtration, concentrating and removing trash, reducing the temperature and crystallizing and separation of liquid and crystals to get pure KCl over 99%, another method includes: dissolving in fresh water, sedmentation and filtration, reducing the temperature and crystallizing and separation of liquid and crystals and the whole production applies total blocking out continuous mode.

An electrochemical cell is presented. The electrochemical cell includes an elongated ion-conducting separator defining at least a portion of a first compartment; a positive electrode composition disposed in the first compartment, the positive electrode composition comprising at least one electroactive metal, at least one alkali metal halide, and at least one electrolyte. A positive current collector is further disposed in the first compartment such that a portion of the positive current collector extends into the positive electrode composition, and a primary dimension of the extended portion of the positive current collector is less than about 20% of a primary dimension of the first compartment. A related method for the preparation of an electrochemical cell is also presented.

A vapor deposition apparatus comprises as a vaporization assembly a container in form of a boat or crucible and a support for vapor depositing phosphor or scintillator material thereupon from raw materials present in said container, wherein said boat or crucible internally comprises an assembly of two perforated covers or lids, one of which is an outer lid (also called first lid) more close to the said support and the other cover is an inner lid (also called second lid) more close to the bottom of the said crucible; and wherein perforations present in said outer lid represent a total surface exceeding the total surface of perforations present in said inner lid more close to the bottom of the said crucible and wherein in said vapor deposition apparatus the said raw materials or the bottom of the said crucible cannot be directly seen through said perforations from any point of said support; thereby providing the manufacturing of a radiation image storage phosphor layer on a support or substrate, by a vapor depositing step of raw materials of an alkali metal halide salt and a lanthanide dopant salt or a combination thereof in order to ensure vapor deposition of a binderless needle-shaped storage phosphor layer in the said vapor deposition apparatus, so that a ratio between the total surface of perforations in said inner lid more close to the bottom of crucible and the total surface of perforations in said outer lid more close to the support is not more than 1.0.

A method is disclosed for the cleaning of a Si surface at low temperatures. Oxide on the Si surface is brought into contact with Ge, which then sublimates off the surface. The Ge contamination remaining after the oxide removal is cleared away by an exposure to an alkali halide. The disclosed cleaning method may by used in semiconductor circuit fabrication for preparing surfaces ahead of epitaxial growth.

The invention provides a novel imidazoline compound corrosion inhibitor and belongs to the field of metal corrosion inhibition. The corrosion inhibitor aims at solving the problems that most oxidation film type corrosion inhibitors and precipitating film type corrosion inhibitors contain heavy metal or the phosphorus element, are large in toxicity and severely pollute the environment. The effective components of the corrosion inhibitor are formed by compounding, by mass, 10% to 30% of thiourea derivatives, 5% to 30% of alkali halide, 30% to 80% of imidazoline-ammonium-salt derivatives and 0 to 15% of urotropin. Raw materials or components of the novel imidazoline compound corrosion inhibitor prepared through the process are simple and easy to obtain and free of or low in toxicity, the characters of molecules of all the components are greatly different, the radii of the molecules of all the components are greatly different as well, and the complementary performance is high; all the components can be adsorbed to the metal surface after being compounded to form a dense monomolecular film; and the corrosion inhibitor has the beneficial effects of being good in universality, small in use amount, high in efficiency, low in toxicity, good in stability, simple in preparation process, low in cost and the like.

An energy storage device is provided that includes a separator having a first surface and a second surface. The first surface defines at least a portion of a cathodic chamber, and the second surface defines an anodic chamber. The cathodic chamber includes an alkali metal halide that forms an ion that is capable of conducting through the separator. The anodic chamber has a volume that is filled with a consumable fluid. The amount of the consumable fluid is greater than 90 percent by volume of the anodic chamber volume. Furthermore, the consumable fluid is reactive with an ionic species of the alkali metal halide. A method of sealing the energy storage device is also provided.

There is provided a method for producing a poly(arylene sulfide) in which a dihalo-aromatic compound and an alkali metal halide are polymerized by heating in an organic amide solvent, wherein the cooling time for the polymerization reaction system is significantly reduced. After the polymerization process, there is provided a cooling process for cooling the polymerization reaction system comprising a liquid phase containing the product poly (arylene sulfide) and the organic amide solvent and a vapor phase containing a gas component (A); and in the cooling process, the gas component (A) in the vapor phase is cooled while the content of a low boiling gas component (A1), which has a lower boiling point than water and exists in the gas component (A), is reduced in the vapor phase of the polymerization system.

The invention discloses a process for synthesizing dibutyl carbonate through the catalysis of load type catalyst, wherein alkali metal hydroxide, alkali metal halides, alkali metal carbonates are loaded onto active aluminium oxide, activated charcoal, or molecular sieve carrier through vacuum dipping method, thus obtaining solid catalyst.

This invention discloses a method for recovering KCl from waste ore of salt lake. The method comprises: utilizing waste ore of salt lake as the raw material, dissolving in solvent, removing the solid phase, adjusting Mg content, clarifying the precipitate, and solarizing to obtain high-purity carnallite. The method expands the exploitation range of potassium ore, and extends the service life of salt lake.

The invention discloses a drying agent for an mine underground electric apparatus and a preparation method of the drying agent, belonging to the field of drying agent, wherein macromolecule water absorbent, compound of silicon or calcium and alkali halide or modified starch are mixed so as to prepare the powdery draying agent according to part by weight; the macromolecule water absorbent is 35-70 parts; the compound of silicon or calcium is 25-55 parts; the alkali halide or a mixture of the alkali halide and the modified starch is 10-15 parts; the grain size of the macromolecule water absorbent is 0.20-0.40mm; and the drying agent is powdery. According to the invention, raw material is wide in source and is purchased easily on the market; the drying agent is used for high / low-voltage power supply appliances worked on a mine underground high-humidity condition (RH=80-100%); the dry powder resists 6000V voltage or does not be broken down under voltage of 3000V; when moisture rate reaches to 1g / g, the dry powder resists 2500V voltage or does not be broken down under voltage of 1200V.