68results about "Magnesium halides" patented technology

A method for producing a nitride semiconductor, comprising controlling temperature and pressure in a autoclave containing a seed having a hexagonal crystal structure, a nitrogen element-containing solvent, a raw material substance containing a metal element of Group 13 of the Periodic Table, and a mineralizer so as to put said solvent into a supercritical state and / or a subcritical state and thereby ammonothermally grow a nitride semiconductor crystal on the surface of said seed, wherein the crystal growth rate in the m-axis direction on said seed is 1.5 times or more the crystal growth rate in the c-axis direction on said seed. By the method, a nitride semiconductor having a large-diameter C plane or a nitride semiconductor thick in the m-axis direction can be efficiently and simply produced.

The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin.

A process for preparing the low-Mg high-Li bitter from the raw bittern of salt lake includes sunning the raw bittern in salt pan and one-stage or multi-stage electric dialyzing by use of selective ion exchange membrane.

A positive electrode active material includes: a particle including a lithium composite oxide; a first layer that is provided on a surface of the particle and includes a lithium composite oxide; and a second layer that is provided on a surface of the first layer. The lithium composite oxide included in the particle and the lithium composite oxide included in the first layer have the same composition or almost the same composition, the second layer includes an oxide or a fluoride, and the lithium composite oxide included in the first layer has lower crystallinity than the lithium composite oxide included in the particle.

An electric power generating unit comprising (i) an ammonia storage device in the form of a container comprising an ammonia absorbing and releasing salt of the general formula: Ma(NH3)nXz, wherein M is one or more cations selected from alkali metals, alkaline earth metals, and transition metals such as Li, K, Mg, Ca, V, Cr, Mn, Fe, Co, Ni, Cu or Zn, X is one or more anions selected from fluoride, chloride, bromide, iodide, nitrate, thiocyanate, sulphate, molybdate, phosphate, and chlorate ions, a is the number of cations per salt molecule, Z is the number of anions per salt molecule, and n is the coordination number of 2 to 12. (ii) means for heating said container and ammonia absorbing and releasing salt for releasing ammonia gas and (iiia) a fuel cell for converting ammonia directly into electric power; or (iiib1) a reactor for dissociating ammonia into hydrogen and nitrogen and (iiib2) a fuel cell for converting hydrogen into electric power is useful for large stationary energy producing facilities, but also for use for is useful for large stationary energy producing facilities, but also for use for small rechargeable and / or replaceable power supply units for micro-fabricated or miniaturized ammonia decomposition reactors for use in mobile units and portable devices may be used for large energy producing facilities, and by use of small rechargeable and / or replaceable ammonia storage decomposition reactors, it is also possible to provide energy for mobile units and portable devices.

It is to provide a positive electrode active material for a lithium secondary battery, which has a large volume capacity density and high safety, is excellent in uniform coating properties and is excellent in the charge and discharge cyclic durability and low temperature characteristics even at a high charge voltage. A process for producing a lithium-containing composite oxide represented by the formula LipQqNxMyOzFa (wherein Q is at least one element selected from the group consisting of titanium, zirconium, niobium and tantalum, N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, alkaline earth metal elements and transition metal elements other than the Q element and the N element, 0.9≦p≦1.1, 0<q≦0.03, 0.97≦x<1.00, 0≦y<0.03, 1.9≦z≦2.1, q+x+y=1 and 0≦a≦0.02) from a lithium source, an Q element source and an N element source, and if necessary, at least one source selected from the group consisting of an M element source and a fluorine source, characterized by using as the Q element source an Q element compound aqueous solution having a pH of from 0.5 to 11.

Alkaline or neutral viscoelastic cleaning compositions are disclosed which use non polymer thickening agents. According to the invention, cleaning compositions have been developed using viscoelastic surfactants in a neutral, acidic or alkaline cleaning formulations. These provide the dual benefit of thickening as well as an additional cleaning, thereby improving performance. Applicants have also identified several pseudo linking agents which when, used with viscoelastic surfactants provide viscoelasticity in alkaline cleaning compositions.

A method of producing metal chlorides is disclosed in which chlorine gas is introduced into liquid Cd. CdCl2 salt is floating on the liquid Cd and as more liquid CdCl2 is formed it separates from the liquid Cd metal and dissolves in the salt. The salt with the CdCl2 dissolved therein contacts a metal which reacts with CdCl2 to form a metal chloride, forming a mixture of metal chloride and CdCl2. After separation of bulk Cd from the salt, by gravitational means, the metal chloride is obtained by distillation which removes CdCl2 and any Cd dissolved in the metal chloride.

The present invention relates to a method for making pure salt comprises recapturing post-drilling flowback water from hydro-fracturing; removing oil from the flowback water; filtering the flowback water using an ultra filter with a pore size of about 0.1 microns or less to remove solid particulates and large organic molecules, such as benzene, ethylbenzene, toluene, and xylene, from the water; concentrating the flowback water to produce a brine that contains from about 15 wt % to about 40 wt % of salt relative to the total weight of the flowback brine; performing one or more chemical precipitation process using an effective amount of reagents to precipitate out the desired high quality commercial products, such as, barium sulfate, strontium carbonate, calcium carbonate; and crystallizing the chemically treated and concentrated flowback brine to produce greater than 99.5% pure salt products, such as sodium and calcium chloride.

First, a primary fluoric ion concentration detection process is performed, and a primary calcium salt addition process is performed to add calcium salt in a first reaction tank, wherein the dosage of the calcium salt in the primary calcium salt addition process is determined according to the detected fluoric ion concentration. Thereupon, a secondary calcium salt addition process is performed to add calcium salt into the second reaction tank. Following that, a solid-liquid separation process is performed to separate calcium fluoride from the wastewater, and a secondary fluoric ion concentration detection process is performed upon the wastewater after the calcium fluoride is separated. Finally, the dosage of the calcium salt in the secondary calcium salt addition process is determined in a feed back control manner according to the detected fluoric ion concentration.

A method for producing halide brine wherein an alkali and a reducing agent are added to an aqueous fluid having a density greater than 8.30 lb / gal., (0.996 kg / L) water, waste water or sea water for example. The resulting fluid is then contacted with a halogen to form a halide brine. The reaction occurs in a conventional reactor such as a mixing tank.

A method of treating solid containing material derived from effluent or sludge from a plant for de-inking paper, the material containing calcium in the form of one or more insoluble calcium compounds, the method including the steps of treating the material with an acid to cause dissolution of the calcium thereby forming a calcium ion-containing solution in which insoluble solids are suspended, separating the solution from the insoluble solids and incinerating the separated solids. The solution containing calcium ions may be treated by adding one or more reagents to form a calcium compound precipitate, eg calcium carbonate. The particulate solids produced following the incineration step and following the precipitate formation may be employed as pigments or fillers in paper making or paper coating.

A precursor halide compound is reduced to a predetermined product at substantially ambient conditions. The halide is added to an anhydrous liquid reaction medium containing one or more alkali metals or alkaline earth metals as reductants. The metal reductants are dispersed as very small globules in the liquid by cavitation of the liquid, such as by application of high intensity ultrasonic vibrations or high-shear mixing to the reaction vessel. Continued cavitation of the liquid medium affects low temperature reduction of the precursor halide(s) to produce a metal, metal alloy, metal compound, ceramic material, metal matrix-ceramic composite material, or the like. The practice may be applied, for example, to titanium tetrachloride, alone or with other chlorides, to produce titanium metal, titanium alloys (for example Ti-6Al-4V), and titanium compounds (TiSi2).

The invention discloses a high-pollution low-density recycling and utilizing method of waste acid, which is characterized by the following: adding the waste water with sulphuric acid into inorganic salt MX to react with sulphuric acid after multi-effective concentration and filtering to remove impurity; generating with gas and acid composite salt; utilizing the acid composite salt or refining and separating through neutralizing, removing impurity and decoloring. The X in the halogenated salt is Cl-or Br-and M is cation to form soluble sulfate with sulfuric radical. The invention modifies and improves the disposing method to recycle and utilize low-density waste acid, which saves waste water disposing cost to provide a new resource integrated concept.

Antiseptic compounds that act as persistent and fast acting antiseptics and disinfectants. The base of these antiseptic actions is CaF2 as the persistent part, preventing the colonization of tissue and nonliving surfaces with microorganisms through the targeted on-demand release of fluorine ions. For fighting heavy contamination and invasion of transient microbes through new application of the solution, fast acting alcohols and toxic solutions have been added in small percentage. They act fast and evaporate fast, leaving the natural protection of skin undamaged and coated with a persistent antiseptic.

A process for producing inorganic fine grains in a definite form having a small grain size, the inorganic fine grains obtained by this process, a rare earth element-activated barium fluorohalide fluorescent substance made using the grains, and a radiation image conversion panel with a layer of the fluorescent substance. The process features adding, to a solution containing an inorganic compound, a solid matter substantially insoluble in the solution, promoting crystallization or precipitation in the solution to form crystal or precipitate, and separating out the resulting crystal or precipitate. The inorganic fine grains produced by this process are represented by the formula BaFI:xLn (Ln represents at least one of Ce, Pr, Sm, Eu, Tb, Dy, Ho, Nd, Er, Tm and Yb, and 0<x.ltoreq.0.2), have a cubic form and have a volume-average grain size of 1 to 10 .mu.m.

Methods of enhancing the solubility of a fluorinated compound in an organic solvent are provided. In one embodiment, carbon dioxide gas pressure is applied to the solvent at a pressure effective to enhance the solubility of the fluorinated compound. The method may further include recrystallizing the fluorinated compound by reducing the pressure of the carbon dioxide gas. Also provided are methods of conducting a reaction using a fluorinated compound in an organic solvent In one embodiment, the method comprises applying carbon dioxide pressure to an organic solvent comprising at least one substrate and a fluorinated catalyst, in an effective amount to solubilize the catalyst; and permitting the fluorinated catalyst to catalyze the reaction of the substrate to form a product. The catalyst is optionally separated from the reaction product and solvent after the reaction by the release of the pressure.

A process for the preparation of Solid Calcium Bromide Hydrates comprises preparing a highly concentrated Calcium Bromide solution from an initial solution having a lower concentration, bringing it into contact with a cold surface, whereby solid Calcium Bromide hydrates form on said surface, and detaching said solid hydrates from said surface. The concentration of the initial solution is not higher than 60 wt %, typically 52 wt %, and is brought to from 65 to 78 wt %. The said Calcium Hydrates are mainly tetrahydrate Calcium Bromide. The Solid Calcium Hydrates have many uses in the processing of oil wells, for instance preparation of completion fluids, work-over fluids or drill-in fluids in the processing of wells, restoring already used and / or depleted such fluids to the desired, original density. They also have other uses, particularly for soil remediation.

A solid material is presented for the partial oxidation of natural gas. The solid material includes a solid oxygen carrying agent and a hydrocarbon activation agent. The material precludes the need for gaseous oxygen for the partial oxidation and provides better control over the reaction.

A method of dividing single crystals, particularly of plates of parts thereof, is proposed, which can comprise: pre-adjusting the crystallographic cleavage plane (2′) relative to the cleavage device, setting a tensional intensity (K) by means of tensional fields (3′, 4′), determining an energy release rate G(α) in dependence from a possible deflection angle (α) from the cleavage plane (2′) upon crack propagation, controlling the tensional fields (3′, 4′) such that the crack further propagates in the single crystal, wherein G(0)≧2γe(0) and simultaneously at least one of the following conditions is satisfied:∂G∂αα=0≤2βehif∂2G∂α2≤0or(2.1)∂G∂α≤2βeh∀α:α1<α<α2,(2.2)