96 results about "Double oxide" patented technology

An integral de-nitrating catalyst SCR with dual oxides as carrier for removing NOx from fume is characterized by that the cellular cordierite ceramic is used as skeleton, its composite carrier is composed of Al2O3 as internal layer and TiO2 as external layer, and its active component consists of V2O5 and WO3. Its advantages are high activity, wide active temp window, and high effect and mechanical stability.

The invention relates to an Ag3PO4 / Mg-Al LDO (Layered Double Oxide) visible light composite photo catalyst, preparation and application thereof. The photo catalyst comprises Ag3PO4 nanometer particles and magnesium-aluminum double metal oxides Mg-Al LDO with a mass ratio of 1:10 to 5:1. A preparation method comprises the following steps of: dispersing magnesium-aluminum layered double hydroxides obtained by a co-precipitation method into the solution of soluble phosphate, adding a silver nitrate solution, stirring for 4-24 hours, washing and roasting to obtain the Ag3PO4 / Mg-Al LDO visible light composite photo catalyst. The photo catalyst is applied to degrading and removing of anion pollutants in dye waste water. While maintaining the characteristic of strong adsorptive property of an adsorbent, the Ag3PO4 / Mg-Al LDO visible light composite photo catalyst also has higher visible light catalytic activity so as to have good application prospect in the purification and treatment field ofthe dye waste water; and the preparation technology and production equipment are simple, environmentally friendly, and easy for industrial production.

The invention relates to a cobalt-cesium oxide catalyst for purifying carbon particles and a preparation method thereof, in particular to a catalyst for treating motor vehicle tail gas pollution, especially for treating the carbon particles from diesel vehicle tails gas, as well as the preparation method thereof. The catalyst is a double-oxide composite catalyst, in particular a catalyst which consists of cobalt loaded on nano cerium dioxide or bulk phase mixed oxide of the cobalt and the cesium, and does not contain precious metal components. The catalyst is nano particles and is suitable for processing the carbon particles in the diesel vehicle tail gas; and the minimum combustion peak temperature reaches 364 DEG C under the condition that the catalyst loosely contacts the carbon particles, which corresponds to the catalytic combustion activity of the carbon particles and the loaded precious metal catalyst.

In a composite material having a construction that on the surface of a substrate is formed a primer layer having an appropriate function, and a photocatalyst layer is laminated on the primer layer, decreasing of the durability of the film due to the existence of the primer layer is prevented. Primer layer 14, photocatalyst layer 16, and hydrophilic layer 18 are laminated on one surface of transparent glass substrate 12 in this order. Primer layer 18, which makes up for suppressing sodium dispersion, is composed of a mixture or double oxide comprising an inorganic oxide such as SiO2 and Al2O3, and lanthanoide oxide such as La, Ce, and Pr, or of Ta2O5 or ZrO2. Photocatalyst layer 16 comprises, e.g., the photocatalyst, TiO2. Hydrophilic layer 18 comprises, e.g., porous SiO2.

The present invention provides a hydrophilic film, which displays excellent hydrophilicity, and also displays excellent durability with respect to acidic, neutral, and alkaline detergents and chemicals. A hydrophilic film of the present invention comprises a double oxide of silicon and zirconium, an alkali metal, and water. Furthermore, the film may also comprise aluminum or a bivalent metal, and may also contain at least one of a silane coupling agent and an acrylic resin.

A thermal spraying powder contains granulated and sintered particles of an yttrium-aluminum double oxide formed by granulating and sintering raw-material particles. The crushing strength of the granulated and sintered particles is 15 MPa or more, and 10% particle size of the granulated and sintered particles is 6 μm or more. The thermal spraying powder is suitable for use in forming a thermal spray coating through plasma spraying.

The invention discloses a platinum-gallium catalyst loaded on double-oxide composite carrier as well as a preparation method and an application of the platinum-gallium catalyst. A CeO2-Al2O3 double-oxide carrier is prepared by using CeO2-Al2O3 double-oxide as a carrier, Pt as an active component and Ga as an assistant in a leaching method; the obtained carrier is steeped into chloroplatinic acid and gallium nitrate solutions, is dried and baked to obtain the catalyst. The catalyst is suitable for low alkane dehydrogenized olefin under a hydrogen atmosphere. Taking propane dehydrogenized propylene as an example, because of the addition of CeO2, lattice oxygen is provided to help inhibiting carbon storage; alloys are formed by Ga and Pt to change acting force of products and reactants and Pt in activity center, and Ga is embedded into the lattice of CeO2, so that the oxygen storage and oxygen moving capability of CeO2 are improved. Because of the addition of CeO2 and Ga, the selectivity of propylene and the carbon storage resisting capability are improved, and the relatively-high reaction stability of the catalyst under a high-temperature condition is guaranteed.

A thermal spray powder contains granulated and sintered particles which contain yttria and an yttrium-aluminum double oxide. The aluminum content in the granulated and sintered particles is 50 to 10,000 ppm by mass on an alumina basis. It is preferred that the thermal spray powder be used in applications for forming a thermal spray coating by plasma thermal spraying at atmospheric pressure.

Provided is a sphere-shaped coated magnesium oxide powder having a surface coated with a double oxide and having an average shape factor of 1.25 or less, wherein the powder is advantageous not only in that it has excellent humidity resistance, but also in that it has excellent filling property and excellent flowability when being used as filler for a resin. In addition, provided is a method for producing a sphere-shaped coated magnesium oxide powder, wherein the method comprises allowing a compound of an element forming a double oxide to be present on the surface of magnesium oxide powder, and then fusing the resultant magnesium oxide powder at a high temperature so that the surface of the magnesium oxide powder is coated with the double oxide and the magnesium oxide powder is shaped into sphere. Further, provided are a resin composition comprising the sphere-shaped coated magnesium oxide powder and an electronic device using the resin composition.

The present invention relates to a process for producing a metallic and / or nonmetallic substrate which is protected against corrosion at least in regions and is, in particular, shiny, which comprises a) provision of a substrate having at least one surface which can be coated at least in regions and b) application of at least one metallic protective layer comprising a first metal, a first noble metal or a first metal alloy and at least one acid, an oxide, double oxide, hydrated oxide, sulphide, halide, nitride, carbide, carbonitride, boride, silicide, oxyhalide and / or salt of a second metal, of a second noble metal and / or of a second metal alloy. The invention further relates to a substrate which is protected against corrosion at least in regions and is, in particular, shiny, which comprises a substrate and at least one metallic protective layer comprising a first metal, a first noble metal or a first metal alloy and at least one acid, an oxide, double oxide, hydrated oxide, sulphide, halide, nitride, carbide, carbonitride, boride, silicide, oxyhalide, in particular oxyfluoride, and / or salt of a second metal, of a second noble metal and / or of a second metal alloy.

The invention provides a double-oxide co-coated high-nickel lithium battery positive electrode material and a preparation method thereof. A high-nickel ternary precursor material is prepared through aco-precipitation method; and then, vacuum pre-sintering is carried out after fully mixing and ball-milling with lithium hydroxide and calcium hydroxide; later, sulfate, metal oxide titanium oxide, cerium oxide and the like are added into gel synthesized in an organic solvent; and the high-nickel lithium battery positive electrode material coated by a double-oxide layer is obtained after sintering. According to the method in the invention, the problem that the alkali content of the traditional high-nickel ternary material is excessively high in the precursor preparation process is solved; theprepared double-oxide-layer coated high-nickel lithium battery positive electrode material forms a physical isolation layer, so that the corrosion of HF in the electrolyte and the generation of side reactions are inhibited, the high-nickel lithium battery positive electrode material is protected; therefore, the cycling performance of the battery is improved; meanwhile, the introduced sulfate ionsform a stable electrolyte layer, so that the decomposition of the electrolyte is inhibited, and the cycling performance of the battery is further improved.

A method of inhibiting vanadic corrosion of a hot part of a gas turbine system is provided. The method includes introducing, in the combustor, a first oxide comprising magnesium oxide (MgO) and at least one second oxide from among Al2O3, Fe2O3, TiO2 and SiO2. A ratio “m” of a number of moles of MgO to a number of moles of V2O5 and a ratio “a” of a total number of moles of the at least one second oxide to the number of moles of V2O5 satisfy two conditions based on a firing temperature of the expansion turbine, an average density of one or more double oxides formed by a reaction between MgO and the at least one second oxide, and an average Knoop hardness of the one or more double oxides formed by the reaction between MgO and the at least one second oxide.

A charging member including an elastomeric member including an elastomeric material. The elastomeric material has a double oxide contained therein, the double oxide being a solid solution compound of oxides of at least two different metals formed by crystal lattice substitution. The at least two different metals have different valences, whereby the double oxide has an electroconductivity that is larger than that of either one of the oxides of at least two different metals when not in solution.

A paste to be fired at a temperature lower than melting point of silver for forming a circuit board comprising surface-modified silver powder consisting essentially of metal silver particles having an average particle size of not more than 10 mum and at least one member selected from the group consisting of oxides and double oxides containing at least one metal element selected from the group consisting of those belonging to Groups 2 to 14 of Periodic Table whose atomic number falls within the range of from 12 to 82, which is adhered to the surface of the individual metal silver particles. The surface-modified silver powder has an elevated sintering-initiation temperature and a reduced rate of heat shrinkage due to sintering. Therefore, the surface-modified silver powder is particularly suitable for use in making a circuit board, in particular an LTCC circuit board.

The invention provides a nanometer composite fiber membrane and a preparation method thereof and relates to the technical field of compounding. The preparation method comprises: dissolving a water-soluble divalent metal salt and a water-soluble trivalent metal salt in water, then adding a precipitating agent into the solution to obtain a metal salt mixed solution, immersing a polymer nanofiber membrane in the metal salt mixed solution to obtain a mixture, heating the mixture, carrying out washing and drying to obtain a layered double oxide-loading nanofiber membrane, mixing the nanofiber membrane and an imidazole solution, and heating the mixture for a reaction to obtain the nanometer composite fiber membrane loading MOF particles. The nanometer composite fiber membrane realizes effectiveadhesion of MOF particles on the nanofibers. The preparation method has simple processes, realizes a low cost, prevents pollution and has a wide application prospect.

The invention discloses a ternary cathode material coated with double oxides and a preparation method thereof, belonging to the technical field of lithium ion batteries. The preparation method comprises the following steps: (1) adding a ternary cathode material into an organic solvent, and performing ultrasonic dispersing to obtain a first dispersion liquid; (2) adding a titanium source and a silicon source into the same organic solvent as the Step (1), and performing ultrasonically dispersing to obtain a second dispersion liquid; 3) uniformly mixing the first dispersion liquid and the seconddispersion liquid, dropwise adding water according to a stoichiometric ratio, stirring and reacting, and evaporating all the solvents to dryness to obtain a composite material precursor; (4) calcinating the composite material precursor to obtain the ternary cathode material coated with double oxides. The different film-forming rates of silicon oxide and titanium oxide during calcination at high temperature ensure the uniform distribution of the final coating layer of the whole. The two oxides jointly form the coating together, which has the effect of 1+1 > 2 on the coating of the cathode material, not only is the cycling stability of the material improved, but also the rate performance of the material is improved.

The drive of direct-heat-supply type reforming of hydrocarbon at ordinary temperature is necessary in order to realize a self-sustaining, on-site reforming type fuel cell system which does not necessitate the supply of energy from the outside. According to the invention, an oxide, CeO2 or Pr6O11, or a Ce / Zr or Ce / Zr / Y double oxide is used as the oxide containing a rare earth element capable of changing the oxidation number with an active metal and oxygen defects are introduced into the oxide or double oxide by activating the oxide or double oxide with a reducing gas at high temperature. When a reaction gas containing hydrocarbon and oxygen is passed though the catalyst at low temperature, the oxygen defects react with oxygen and thereby return to the original oxide. Since this return reaction is an exothermic reaction, the catalyst itself is heated, which acts as the driving force for advancing the combustion of the hydrocarbon, whereby the catalyst layer is further heated and the reforming is advanced to from hydrogen. Thus, the hydrogen-producing reaction can be driven even at low temperature, particularly ordinary temperature.

The invention discloses a solvent-free method of preparing a Co-MOF material based on a cobalt-containing double metal oxide. The method comprises the following steps of: grinding and mixing the cobalt-containing double metal oxide with a ligand compound; putting the mixture in a sealing kettle; and performing a reaction at 80-300 DEG C in the sealing kettle to obtain the Co-MOF material which is large in specific surface and has mesopores and micropores at the same time. The method is simple to operate, short in period and high in yield, provides a novel MOF material preparation path, and greatly lowers the production cost of the MOF material, so that industrial production is facilitated.

The invention relates to an integrated selective catalytic reduction catalyst for diesel vehicle exhaust purification and a preparation method thereof. The catalyst consists of a carrier, a coating coated on the carrier and catalytic active ingredients loaded on the coating. Cordierite honeycomb ceramic is used as the carrier; double oxides of gamma-Al2O3 and TiO2 are used as coating materials; and V2O5, MnO2 and MoO3 are used as the active ingredients. Compared with the prior art, the activity and the chemical stability of the catalyst are improved, the catalytic activity temperature window is broadened, the load amount of the active ingredients is reduced, and the cost of the catalyst is reduced.

The present invention provides a coated cutting tool comprising a substrate with a rake side, a clearance side and a cutting edge, and a coating comprising a first layer and a second layer where the second layer comprises a sandwich structure consisting of an inner layer, an intermediate layer and an outer layer, wherein the inner layer is exposed through an opening in the outer layer and said opening extends over at least a portion of the width of the cutting edge. Thereby a double layer is provided in critical areas whereas a single layer is provided in other areas. Preferably the double oxide layer is an aluminum oxide layer. A method for manufacturing the coated cutting tool is also provided.

Provided are: a sintered oxide comprising indium, tungsten, and at least one of zinc and tin, and comprising, as a crystal phase, a double oxide crystal phase including tungsten, and at least one of zinc and tin; and a semiconductor device (10) comprising an oxide semiconductor film (14) formed by a sputtering method using the sintered oxide as a target.

Using as a negative thermal expansion material a double oxide containing at least partly a compound represented by the chemical formula: RQ,O, (wherein R is Zr, Hf or a tetravalent metallic element represented by a mixture system of these, and Q is a hexavalent metallic element selected from W and Mo), and using as a positive thermal expansion material a material containing at least partly a compound represented by the chemical formula: MQX, (wherein M is Mg, Ca, Sr, Ba, Ra or a divalent metallic element represented by a mixture system of any of these, Q is a hexavalent metallic element selected from W and Mo, and X is an element selected from O and S), these are mixed preferably in a weight ratio of 1:1 and are synthesized to obtain a material whose coefficient of thermal expansion is substantially zero over a wide temperature range, i.e., a zero thermal expansion material. Using this zero thermal expansion material, high-precision and high-performance practical component parts can be obtained.

Provided is a sphere-shaped coated magnesium oxide powder having a surface coated with a double oxide and having an average shape factor of 1.25 or less, wherein the powder is advantageous not only in that it has excellent humidity resistance, but also in that it has excellent filling property and excellent flowability when being used as filler for a resin. In addition, provided is a method for producing a sphere-shaped coated magnesium oxide powder, wherein the method comprises allowing a compound of an element forming a double oxide to be present on the surface of magnesium oxide powder, and then fusing the resultant magnesium oxide powder at a high temperature so that the surface of the magnesium oxide powder is coated with the double oxide and the magnesium oxide powder is shaped into sphere. Further, provided are a resin composition comprising the sphere-shaped coated magnesium oxide powder and an electronic device using the resin composition.

A composite cathode active material, includes a first metal oxide having a first layered crystal structure; and a second metal oxide having a second layered crystal structure, wherein the second metal oxide includes a layered double oxide (LDO).

The invention discloses a double oxide composite type super thermite. The double oxide composite type super thermite comprises the following components in part by weight: 1 to 4 parts of Al powder, 1 to 8 parts of CuO and 1 to 8 parts of MxOy, wherein the MxOy is a metal oxide; M is selected from the II-th, the III-th, the IV-th and the V-th main group metal elements, transition metal elements or lanthanide elements; M is not Cu; x and y are positive integers and meet chemically reasonable values; and the grain size of the aluminum powder is 20 to 100 nm. The double oxide composite type super thermite has small grain size and high purity, serves as a combustion catalyst, has an excellent catalytic effect on combustion of a double-base propellant, and can remarkably increase the combustion speed of the propellant and reduce the pressure index.

The invention discloses a method for synthesizing a ZnO supported Fe2O3 nanoheterostructured gas sensor on the basis of an MOF (metal-organic framework) template. The method comprises the following steps: (1) an MIL-88A nanorod is obtained with a solvothermal method and sintered, and a porous alpha-Fe2O3 nanorod is obtained; (2) the porous alpha-Fe2O3 nanorod is taken as a substrate, zinc acetatedihydrate is taken as a reaction raw material, fumaric acid is taken as a ligand, methanol and water are taken as a mixed solvent, and soaking is performed multiple times; (3) after a solvothermal reaction, Zn-MOF / alpha-Fe2O3 powder is obtained by centrifugation, washing and drying and is calcined, and ZnO / alpha-Fe2O3 heterostructured nanopowder is obtained; (4) the gas sensor is prepared. The nanoheterostructured material is synthesized successfully with MOFs as a template, the prepared gas sensor is a practical semiconductor type gas sensor with high sensitivity, good stability and low cost,and one new idea is provided for synthesis of LDO (layered double oxide) nanoheterostructures.

An exhaust emission control system for an internal combustion engine is provided. The exhaust emission control system (4) includes a monolith catalyst (MC) that includes an oxygen storage agent and a noble metal-based three-way catalyst including Pd, Rh, and Pt disposed at an upstream location in the exhaust gas flow in the internal combustion engine (2), and a perovskite-type double oxide having a three-way catalytic function disposed at a downstream location in the exhaust gas flow. The amount C1 of Pd carried is 0.97 g / L≦C1≦1.68 g / L, the amount C2 of Rh carried is 0.11 g / L≦C2≦0.2 g / L, the amount C3 of Pt carried is 0.06 g / L≦C3≦0.11 g / L, the amount C4 of the oxygen storage agent carried is 25 g / L≦C4≦75 g / L, and the amount C5 of the perovskite-type double oxide carried is 5 g / L≦C5≦15 g / L. It is thereby possible to provide an exhaust emission control system that can reduce the production cost by reducing the amount of noble metal-based three-way catalyst used and at the same time can maintain a high exhaust emission control rate.