239 results about "Inorganic chemistry" patented technology

Ionic liquids are incorporated into transducers, actuators or sensors which employ the ionic polymer membranes. The ionic liquids have superior electrochemical stability, low viscosity and low vapor pressure. The transducers, actuators and sensors which utilize ionic polymer membranes solvated with ionic liquids have long term air stability. Superior results are achieved when a conductive powder and ionomer mixture is applied to the ionic polymer membrane to form the electrodes during or after the ionic liquid is imbibed into the ionic polymer membrane.

A chemical mechanical polishing aqueous dispersion includes (A) abrasive grains having a pore volume of 0.14 ml / g or more, and (B) a dispersion medium.

The invention discloses a novel disulfonate type alkyl imidazole ionic liquid as well as a preparation method and application thereof. Structure of the ionic liquid is shown as formula (I), and the preparation method of the ionic liquid comprises the followings steps: trimethylsilylimidazole with structure shown as formula (II) is dropwise added to sultones with the structure shown as formula (III) for heat insulation reaction at the temperature of minus 20 DEG C to 30 DEG C, then water is dropwise added for continuing the heat insulation reaction to obtain an intermediate product (a zwitterionic compound) with the structure shown as formula (IV); an HY acid is dropwise added to aqueous solution of the zwitterionic compound to obtain a target product after full reaction at the temperature of 60-100 DEG C. The designed ionic liquid is hydrostable, almost has no steam pressure, especially has strong acidic properties, exhibits good catalytic activity when being applied to pechmann reaction, and a synthetic method thereof has environment-friendly feature, thus being expected to be applied to organic synthesis and catalysis fields as an environment-friendly solvent and catalyst.

The invention discloses a preparation method of submicron CuS (copper sulphide) classification balls. The method comprises the following steps: adding polymer into a good solvent to dissolve and remove big gel particles; adding copper source solution to the good solvent and stirring; adding sulfur source solution and then stirring; reacting the reaction liquid under 100-1,000 KPa at 100-200 DEG C; naturally cooling to the room temperature to obtain black precipitate; and washing and drying the precipitate to obtain the classification balls. The classification balls has the advantages of cheap and readily available templates, environmental friendliness, safety without toxicity, renewability and high water solubility, the contents of raw materials are abundant in nature and the operation of the reaction system is simple; the size and structure of the prepared classification ball are adjustable: the diameter can be controlled by adjusting the molar weight of the added precursor, the template concentration, the reaction temperature and time and the like; the operation is simple; and the prepared classification balls have wide application value in the fields of catalyst, catalyst carrier, optical equipment, sensor, lithium-ion rechargeable battery cathode material, superconductor and the like.

The invention discloses a preparation method of a positive electrode material of a lithium-ion battery. The method comprises the specific steps of dropwise adding a metal salt solution and a mixed solution of a precipitant and a complexing agent to a surfactant solution; controlling a pH value and a temperature under a synergistic effect of an inert atmosphere, ultrasonic cavitation and stirring dispersion until the metal salt solution is dropwise added; carrying out spray drying and roasting to obtain a spherical product, mixing the spherical product with a lithium source and roasting the mixture again to obtain the positive electrode material of the lithium-ion battery. The crystalline morphology can be effectively controlled by using a surfactant; the early synthesized material has an obvious sheet structure; particles agglomerated by a spray-dried product are uniform in size; a foundation is laid for later roasting to obtain the spherical particles with uniform sizes; and meanwhile, another foundation is laid for a relatively good morphology of the final product positive electrode material.

The invention relates to a method for treating the surface of lithium metal with fluoroethylene carbonate and an application of the lithium metal in solid-state batteries, and belongs to the technicalfield of preparation of negative electrode materials for lithium batteries. The method comprises that a lithium negative electrode is immersed in fluoroethylene carbonate, and then taken out and subjected to drying treatment to volatilize a residual liquid on the surface. The method is simple and easy to operate and easy to control, has obvious effect on solving the problems of poor compatibilityof lithium metal / solid electrolyte interfaces and lithium dendrite growth in conventional solid-state batteries, and is suitable for large-scale commercialized production.

A method of producing nanoclays comprising the steps of preparing a first intercalant alkali salt of a carboxylic acid, adding the first intercalant to a swelled clay at a temperature of at least 50° C. so that the metal ions on the clay surface forms a complex with the carboxyl group that enlarges the space between the two galleries of clay. The method further comprises the step of adding an organic acid as a second intercalant to the clay modified by the first intercalant to form a clay / organic salt / organic acid complex. The clay / organic salt / organic acid complex may be post processed by precipitating, homogenizing with a solution comprising of water and alcohol, filtering, drying, milling, and sieving to produce the desired nanoclay.

The invention discloses a method for catalysis synthesis of glycerol formal by gemini dication acidic ion liquid. In the method, gemini dication acidic ion liquid is used as catalyst, glycerol and formaldehyde solution are taken as reactant, cyclohexane is taken as water-carrying agent, and the raw material is subject to catalysis synthesis at the temperature of 40-120 DEG C to obtain glycerol formal. The method has moderate reaction condition, low catalyst corrosivity, high catalytic activity, high product selectivity, simple operation process and strong controllability and can be reused.

The invention relates to the technical field of catalyst preparation, and discloses a cobalt-aluminum composite oxide catalyst and a preparation method and application thereof. The preparation methodcomprises the steps that metal salt solutions of cobalt and aluminum are taken as precursors correspondingly, polymer microspheres are taken as a template agent, templates are soaked in the precursorsolutions, then impregnation and roasting are conducted, and thus the cobalt-aluminum composite oxide catalyst is obtained. A three-dimensional ordered hierarchical pore structure with a mesoporous and macroporous structure is created through the polymer microspheres, thus the specific surface area of the catalyst is increased, the prepared catalyst has a large transmission pore channel, reactantmodules enter the pore channel from all directions advantageously, the diffusion resistance is lowered, thus the convective mass transfer efficiency between gases is improved, and the catalytic activity of the cobalt-aluminum composite oxide catalyst is facilitated; and meanwhile, through the large transmission channel, the situation that the modules are blocked when reacting on the pore wall or the pore channel of the transmission channel, and consequently, the reaction progress is influenced can further be effectively avoided, and the catalytic conversion efficiency of the catalyst is improved.

The invention discloses ferroferric oxide magnetic nanometer particles decorated with tetraazacalix [2] arene [2] triazine. A preparation method of the ferroferric oxide magnetic nanometer particles comprises the following steps of: firstly, covering a silicon shell by using the ferroferric oxide magnetic nanometer particles; decorating with amino to obtain amino-modified ferroferric oxide magnetic nanometer particles; and reacting the ferroferric oxide magnetic nanometer particles with the tetraazacalix [2] arene [2] triazine at 110 DEG C under a nitrogen condition to prepare the ferroferric oxide magnetic nanometer particles decorated with tetraazacalix [2] arene [2] triazine. The ferroferric oxide magnetic nanometer particles integrate the advantages of large superficial area of the original and easiness of separation of the original ferroferric oxide magnetic nanometer particles, and also have a new function characteristic, so that the extraction selectivity of a characteristic target is enhanced; and the ferroferric oxide magnetic nanometer particles are used for extracting and separating, and have the advantages of easiness and convenience in operation, and capability of extracting, enriching and separating organic matters and inorganic cations. And moreover, the ferroferric oxide magnetic nanometer particles can be totally separated from a base solution under an external magnetic field function, so that the ferroferric oxide magnetic nanometer particles are economic, environment-friendly and high in recovery rate and have a good popularization and application prospect.

The invention relates to an anion doped modified lithium ion battery (4:4:2) type ternary cathode material and a preparing method thereof, and belongs to the field of lithium ion batteries. The general chemical formula of the cathode material is LiNi<0.4>Co<0.2>Mn<0.4>O<2-z>Xz, wherein the X is F, Cl or Br; and the Z is more than 0 and not more than 0.15. The method includes steps of: weighing a soluble lithium salt, a nickel salt, a manganese slat, a cobalt salt and an X salt according to a molar ratio, dissolving the weighed compounds separately with deionized water, adding a citric acid solution and mixing and stirring uniformly, adjusting the pH value by utilization of concentrated ammonia liquor, heating and evaporating to obtain gel, heating and drying the gel, and performing two times of firing and grinding to obtain the anion doped modified lithium ion battery (4:4:2) type ternary cathode material. Particles of the lithium ion battery cathode material are fine and uniform and reach the nanometer level, so that the cathode material has characteristics of high discharge capacity, excellent cyclic stability and rate capacity, capability of maintaining the properties at high or low temperature conditions, convenience for large-scale industrial production, and high practical degree.

The invention discloses a superhard non-stick silicon cooker coating prepared by a sol-gel hybridization technique. The coating comprises the following components: 30-50% of nanometer silica, 20-40% of silicic acid compound, 5-10% of magnesium-calcium compound, 3-5% of ammonium chloride, 0.5-2.0% of catalyst, 1-4% of accessory ingredient, 0.5-2.0% of silane coupling agent, 15-25% of multielement organosilicon material, 5-10% of absolute ethyl alcohol and 10-20% of distilled water. The preparation method of the coating comprises the following steps: using a sol-gel method to synthesize nano CaO-SiO2 power; replacing Ca by Mg to develop a (Ca, Mg)SiO3 nano power material; introducing low-temperature sintered assistant precursors into sol to reduce the sintering temperature of ceramics; and adding a defined amount of organosilicon material to adjust the hardening temperature of the ceramics to obtain the low-temperature sintering nano ceramic coating at the temperature below 250 DEG C. The superhard non-stick silicon cooker coating has strong adhesive force, high hardness, small possibility of scratch, and impact resistance, is non-toxic and environment-friendly, and can completely replace Teflon non-stick coatings.

The invention relates to a method for composite phosphotungstate catalyzed synthesis of citrate ester. The citrate ester is synthesized through an esterification reaction of citric acid and fatty alcohol with composite phosphotungstate as a catalyst. The structure formula of the composite phosphotungstate adopted in the invention is (NH4)xM(3-x-y) / 4HyPW12O40, wherein M is Ti or Zr, x is 0.4-1, and y is 0.4-1. The method has the following advantages: the catalyst has low cost, is easy to prepare, has a high catalysis efficiency, can be simply separated from the above product, and has excellent performances when being reused.

The invention discloses a Binchotan-added activated carbon filter material for air conditioners. The Binchotan-added activated carbon filter material is characterized by being prepared from the following raw materials, by weight, 135-145 parts of cocoanut active charcoal, 10-15 parts of Binchotan, 2-3 parts of potassium hydroxide, 3-4 parts of brown sugar, 12-14 parts of zeolite powder, 7-9 parts of meerschaum powder, 3-5 parts of seaweed meal, 1-2 parts of sodium alginate, 1-2 parts of D-sodium erythorbate, 4-6 parts of sodium chloride, 4-6 parts of an adsorbent-aid and a proper amount of water. Apart from the addition of components such as zeolite powder, meerschaum powder and the like that enhance the adsorbing effect, the component Binchotan is also added, enhancing adsorptivity of activated carbon, releasing negative ions, blocking electromagnetic wave and appropriately adjusting indoor humidity. The component Binchotan has an excellent health-care effect. In cooperation of the adsorbent-aid, adsorption efficiency is enhanced, and indoor harmful gases are removed rapidly to make the air indoors fresh and pleasant. The preparation process is simple, and the activated carbon filter material has long service life and can repeatedly be used.