184 results about "Rare earth metal compounds" patented technology

A method of treating a thermal barrier coating comprises applying a dopant composition to a selected surface of the thermal barrier coating disposed on a turbine engine part, and heating the surface to form an enhanced thermal barrier coating. The dopant composition comprises a rare earth metal compound.

The invention discloses a catalytic agent for an air electrode and a novel air electrode manufactured by the catalytic agent and a manufacturing method of the air electrode; the catalytic agent for the air electrode is formed by compounding a main catalytic agent and at least one auxiliary catalytic agent; the main catalytic agent is metal salts containing manganese, and the auxiliary catalytic agent is rare earth compound or rare metal compound; the weight of the main catalytic agent accounts for 60-85 percent of total weight of the catalytic agent, and the remaining is the auxiliary catalytic agent. The novel air electrode is formed by pressing a catalytic membrane, a current collector and a water-proofing breathable film sequentially. In order to manufacture the novel air electrode, thecatalytic membrane and the water-proofing breathable film are firstly manufactured, and then are pressed together or pressed together with a meshed current collector, and then the air electrode is prepared after removing organic solvents.

The invention relates to a glass composition for absorbing ultraviolet ray and infrared ray, which comprises a glass basic composition (weight ratio): 60-75% of SiO2, 8-20% of Na2O, 3-12% of CaO, 0.1-5% of Al2O3, 2-5% of MgO; 0.02-7% of K2O, 0.1-5% of BaO and 0.01-0.4% of SO3; and a glass body coloring coordination part for absorbing ultraviolet ray and infrared ray: 0.22-1.35% of Fe2O3, 0.001-0.8% of ZrO2+HfO2, 0-0.5% of Cl, 0-2% of B2O3, 0.01-0.8% of TiO2, 0.001-0.06% of CuO; 0-2.0% of Br, 0-0.02% of MnO, 0-2.0% of F, 0.001-0.5% of Sr and 0.005-2.2% of CeO2. The redox ratio of Fe2O3 in the glass composition is 0.4-0.8. Rare metals and rare earth metal compound with a certain amount can be added in the glass composition, limitation of the current heat insulation glass can be breakthrough, chemical oxygen demand of the raw materials and the redox ratio can be controlled in a reasonable mode, obstruction to ultraviolet ray, infrared ray and total energy can be effectively realized, visible light transmittance is simultaneously increased, so that heat insulation glass capable of strongly absorbing the ultraviolet ray and near infrared can be obtained.

The invention discloses a catalyst preparing zero-COx hydrogen by ammonia decomposition reaction as well as its preparing method. Its components: active component 0.1-30%, carrier 60-99% and assistant 0-20%. The active component is a metal nitride where the metal is selected from the transition metals and has noble metal property, the carrier is a nano crystal metal oxide (crystal particle size 2-200nm); the assistant is selected from alkali metal, alkali earth metal and rare-earth compound. Its preparing method: firstly, dipping the carrier in the solution of the precursor of the active component, and then drying to bake at 300-900 deg.C; then reducing the sample at 300-900 deg.C by hydrogen, adding in the assistant, drying and baking and then activating at 300-900deg.C. It has very high catalysis activity to ammonia decomposition reaction and simple preparing technique. It can be applied to not only the reaction technique of making zero-COx hydrogen by ammonia decomposition, but also the purifying treatment.

An object is to provide a light-emitting element which exhibits light emission with high luminance and can be driven at low voltage. Another object is to provide a light-emitting device or an electronic device with reduced power consumption. Between an anode and a cathode, n (n is a natural number of two or more) EL layers are provided, where between a first EL layer and a second EL layer, a first layer containing any of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, and a rare earth metal compound, a second layer containing a material having a high electron-transporting property in contact with the first layer, and a region containing a material having a high hole-transporting property and an acceptor material in contact with the second layer are provided in this order from the anode side.

A light-emitting element is provided, in which n (n is a natural number of two or more) EL layers are provided between an anode and a cathode. Between the m-th (in is a natural number, 1≦m≦n−1) EL layer and the (m+1)-th EL layer, a first layer containing any of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, and a rare earth metal compound, a second layer containing a substance having high electron-transport properties in contact with the first layer, and a charge-generation layer containing a substance having high hole-transport properties and an acceptor substance in contact with the second layer are provided in this order over the anode. The charge-generation layer does not have a peak of an absorption spectrum in a visible light region.

The invention discloses a solid phase synthesis method and a liquid phase synthesis method of chitosan and / or zinc, silver, bismuth and rare earth metal composite of chitosan derivative. The solid phase synthesis comprises the following steps: (1) grinding chitosan and / or chitosan derivative to fine powder; (2) grinding the oxides of zinc and / or silver and / or bismuth and rare earth metal to fine powder of which content is 0.0005-2wt% of the weight of chitosan and / or chitosan derivative; (3) mixing the fine powders obtained in step (1) and step (2) and fully grinding for 1-6h to obtain the chitosan and / or metal composite of chitosan derivative. The product of the preparation method can be used to cure diseases such as female vaginitis, cervicitis, cervical erosion, bedsore, skin ulcer, fireburn, empyrosis, trauma, other dermatitis disease, tinea of feet and hands and the like and can be used to prepare various surgical dressings such as film, sponge, gynecological suppository, adhesivefilm and the like.

The invention discloses a method for producing a compound of fine denier nylon fiber or super fine denier nylon fiber or producing fine denier nylon fiber or super fine denier nylon fiber. The compound comprises nylon and a lanthanide rare-earth metal compound; wherein the weight of the rare-earth metal in the rare-earth metal compound is between 50ppm to 10 percent based on the weight of nylon used. The method for producing the fine denier nylon fiber or super fine denier nylon fiber is a melt-spinning method, which includes the step of adding a rare-earth metal compound during the process of nylon melt-spinning. Fine denier nylon fiber or super fine denier nylon fiber, the denier of which is smaller than 1, can be obtained by the method.

This invention publishes a synthesis method for polyesters from rare earth catalysts. In this method, single-kettle operation is adopted. One of the compounds of titanium, stibium and zincum is chosen as the catalyst C1 for transesterification and esterification and is added into the reaction kettle with monomer raw materials before reaction. After a certain period of prepolymerization, a rare earth metal compound as catalyst C2 is added for vacuum condensation polymerization. It is due to the single-kettle operation that this invention has the advantages of simplified technique, accelerated polymerization reaction, promoted product molecular weight, reduced side reactions and significantly improved color of polyester product.

The invention discloses an UV-resistant nylon plastic material comprising the raw materials of, by weight, 40-50 parts of PA6, 35-45 parts of modified glass fiber, 5-10 parts of polyethylene, 10-15 parts of a polyethylene-grafted maleic anhydride polymer, 10-15 parts of polypropylene, 20-30 parts of wollastonite, 10-20 parts of kaolin, 30-40 parts of glass microbead, 3-8 parts of carbon black, 5-10 parts of nano-grade titanium dioxide, 1-3 parts of a titanate coupling agent, 1-3 parts of polyethylene wax, 0.5-1.5 parts of zinc stearate, 1-2 parts of a dispersant, 2-4 parts of a toughening agent, 1-2 parts of a lubricant, 1-3 parts of an antioxidant, 1-4 parts of a light stabilizer, 1-2 parts of an ultraviolet absorber, 0.5-0.8 parts of a rare earth metal compound, and 1-5 parts of maleic anhydride-grafted EPDM. The plastic material provided by the invention has good mechanical performances, good UV resistance, and long service life.

The purifying catalyst for gas containing cyanogen is granular or formed carrier made of SiO2, Al2O3, zeolite or other material and carrying soaked transition metal oxide(s) and / or RE metal oxide(s). It is prepared through soaking the carrier in water soluble transition metal oxide(s) and / or RE metal oxide(s) and subsequent drying and activating in the air at 80-600 deg.c. The catalyst can convert compound containing cyanogens in the air completely into harmless compound at 200 deg.c and may be used widely in chemical industry, environment protection and other fields.

The invention relates to the field of spinning materials and provides a nylon 6 resin. The nylon 6 resin is prepared by carrying out polymerization reaction on a mixing fusant of a caprolactam monomer and a rare-earth metal compound, wherein the weight percentage of the rare-earth metal compound is 0.01-0.8% on the basis of the total weight of the caprolactam monomer. The invention also provides a nylon 6 filament made of the nylon 6 resin, and the nylon 6 filament is obtained by carrying out melt spinning on the nylon 6 resin. Fine denier or super-fine denier nylon filaments with fineness of about 0.20-1.0dtex can be obtained by using the nylon 6 resin and the preparation method thereof; the strength and the elongation at break of the fiber are in line with post-weaving requirements, the blank that the fine denier or super-fine denier nylon 6 filaments can be manufactured by adopting a conventional high-speed spinning method at home and abroad is filled up, and the technological content and the additional value of a nylon 6 fiber product are increased.

The invention belongs to the technical field of catalysts and preparation thereof, and discloses a catalyst for preparing hydrogen gas without COx by ammonia decomposition reaction and a preparation method thereof. Co-Mo nitride with noble metal property is used as the main active component of the catalyst, alkali metal, alkali-earth metal, transition metal or rare earth compound is used as an additive of the catalyst, and carbon nanotubes are used as carriers. The catalyst is prepared by the isometric impregnation process and the temperature programed nitridation technology, wherein the nitridation is realized by the nitriding gas which is a mixture of nitrogen gas and hydrogen gas, proportion of nitrogen gas and hydrogen gas is controlled in a staging manner, hydrogen gas dominates in the reduction stage, and the nitrogen gas dominates in the nitriding stage, so that the catalyst prepared by the method has fine reaction activity and stability and is low in cost and simple in preparation process.

The invention discloses a method for preparing cyclic carbonate. The method specifically comprises the following step: with a quadri-aryloxy bridged rare earth metal compound as a catalyst, catalyzing carbon dioxide and alkylene oxide to react in the present of quaternary ammonium salt, wherein the general formula of the quadriaryloxy bridged rare earth metal compound is LLn(THF), wherein L refers to ethanediamine group bridged quadri-aryloxy, Ln refers to rare earth metal ions, and the quaternary ammonium salt is one of tetrabutylammonium iodide, tetrabutylammonium bromide, tetrabutylammonium chloride, tetraoctyl ammonium bromide, bis(triphenylphosphine) ammonium chloride and benzyl butyl ammonium bromide. The rare earth catalyst in the catalysis system is clear in structure, easy to synthesize, high in catalysis activity, less in using amount, mild in reaction conditions and wide in universality to alkylene oxide. According to the preparation method disclosed by the invention, raw materials are easily available, the reaction conditions are wild, a reaction substrate is wide in universality, the reaction time is short, the yield of the target product, namely the cyclic carbonate is high, and the reaction operation and the posttreatment process are simple.

The invention discloses a catalytic wet oxidation catalyst and a preparation method thereof. The catalyst comprises the following core-shell structure components, the core-shell structure components take active carbon loaded with transition metal as a core, and take alumina containing rare earth metal or amorphous silicon-aluminum as a shell. The method is characterized in that during a gel forming process of alumina or amorphous silicon-aluminum and a rare earth metal compound, an active carbon slurry loaded with transition metal is introduced, and after the gel forming process, the catalyst can be obtained through an aging process. The catalyst has high reaction activity and usage stability.

The invention discloses a welding and cutting gas which consists of a natural gas and a gain agent, wherein the gain agent consists of a rare earth metal compound, a transition metallocene compound, methanol, toluene, methyl tertiary butyl ether, cyclohexane, nonane, decane and water. Compared with acetylene and propane, the welding and cutting gas is more economical, more energy-saving, more environment-friendly, safer and cleaner. The invention also provides a preparation method of the welding and cutting gas.

Provided are a rare earth nano phosphor and a method of preparing a rare earth nano phosphor, the method includes: (a) synthesis of rare earth nano phosphor precursor particles by radiating microwave energy to a solvent where rare earth metal compounds are dissolved; and (b) sintering of inorganic salt and the rare earth nano phosphor precursor mixture.

The present invention provides a process for efficiently obtaining polyethers having its high degree of polymerization by easily polymerizing substituted epoxides which could hardly or could not be made so far to provide a high degree of polymerization. That is, a polyether is obtained by a process which comprises ring-opening-polymerizing at least one substituted epoxide, except for propylene oxide and epihalohydrin, in the presence of a rare earth metal compound represented by the formula (I) and a reducing compound:Wherein M represents a rare earth element selected from Sc, Y and lanthanide, and L1, L2 and L3 are same as or different from each other and each of them represents an oxygen-binding ligand.

There is provided a photofunctional laminated article being excellent in various photofunctionalities, particularly an intensity of light emission, light emitting efficiency and further fluorescence life and light amplifying property. The photofunctional laminated article comprises the transparent substrate (L0), the photofunctional layer (L1) comprising the fluorine-containing polymer (A) and the rare earth metal compound (B) and being formed on the substrate (L0) and the low refractive index layer (L2) formed on the photofunctional layer (L1), and when refractive indices of each layer are assumed to be n(L0), n(L1) and n(L2), the following equation: n(L0)≧n(L1)>n(L2) is satisfied.

A light-emitting element includes an EL layer between an anode and a cathode, and a first layer, a second layer, and a third layer between the cathode and the EL layer. The first layer provided between the cathode and the second layer is in contact with the cathode and the second layer, and includes a substance having a hole-transport property and an acceptor substance. The second layer provided between the first layer and the third layer is in contact with the first layer and the third layer, and includes a phthalocyanine-based material. The third layer provided between the second layer and the EL layer is in contact with the second layer and the EL layer, and includes an alkali metal, an alkaline-earth metal, a rare-earth metal, an alkali metal compound, an alkaline-earth metal compound, or a rare-earth metal compound.

Provided are a light-emitting element in which a driving voltage increase can be suppressed and a light-emitting device which has reduced power consumption by including the light-emitting element. The element includes an EL layer between an anode and a cathode, and has a first, a second, and a third layer between the cathode and the EL layer. The first layer is between and in contact with the cathode and the second layer and includes a hole-transport substance. The second layer is between and in contact with the first the third layers and includes a phthalocyanine-based material. The third layer is between and in contact with the second and EL layers and includes an alkali metal, an alkaline-earth metal, a rare-earth metal, an alkali metal compound, an alkaline-earth metal compound, or a rare-earth metal compound. The phthalocyanine-based material has a metal-oxygen bond.

The invention discloses a high-temperature alterant, which comprises the following components in percentage by weight: 15 to 20 percent of chloride, 40 to 45 percent of chloride, 25 to 30 percent of rare earth metal compound, 3 to 8 percent of titanium dioxide, and 2 to 6 percent of graphite. The invention also discloses a method for purifying a fusant, wherein the high-temperature alterant is added into a smelting furnace. The high-temperature alterant can reduce the sodium content in an electrolytic molten aluminum fusant and effectively control the grain size to achieve good grain refining effect. The method for purifying the fusant can effectively reduce gas and foreign impurities in the fusant, optimize the production process, ensure the quality of aluminum and aluminum alloy fusants, improve the ingot yield, save the energy consumption, and reduce the discharge of pollutants.

The present disclosure relates to a plasma resistant coating film and a fabricating method thereof, more particularly a plasma resistant coating film and a fabricating method thereof which can secure chemical resistance by means of, after thermally spraying the first rare earth metal compound, double sealing through aerosol deposition and hydration, thereby minimizing open channels and open pores in the coating layer and plasma corrosion resistance by means of the dense rare earth metal compound coating film.

It is a preparation method of cracking catalyst which can resist heavy metal pollution. Making clay, de-ionized water and optional additive well blended to get clay slurry. Making molecular screen de-ionized water and optional additive well blended to get molecular screen slurry. Making agglomerant, de-ionized water, alkali soil metal compound, rare earth compound and optional inorganic acid well blended to get agglomerant slurry. Uniform mixing three kinds of slurry mentioned before, and then drying the mixture. This kind of cracking catalyst has good resistivity to nickel and vanadium, and even when there is a high level of nickel in the catalyst, the cracking catalyst can work well.

The invention discloses bridged bisamido rare-earth amide compounds, and a preparation method and catalytic application thereof. The general formula of the rare-earth compounds is {LLn[N(SiMe3)2].THF}2, and the chemical structural formula is disclosed in the specification. In the general formula, L represents a bridged bisamido ligand, and the ligand LH2 is N,N'-(cyclohexane-1,2-diyl)bis(4-tert-butylbenzamide); and Ln is a rare-earth metal selected from lanthanum, neodymium, samarium, yttrium or ytterbium. The bridged bisamido rare-earth amide compounds have the advantages of simple synthesis process, definite structure and high yield. The invention also discloses a preparation method of the compounds and an application method of the compounds as a catalyst for catalyzing carboxylation reaction between alkynyl terminal group and carbon dioxide. The application method has the advantages of mild conditions, high activity, favorable selectivity and wide substrate application range.

The invention relates to a tourmaline plastic-based master batch material, which comprises a tourmaline, polypropylene random copolymer (PP-R), zirconia, magnesia, monox, rare earth compounds and a modifier; wherein, in the tourmaline, the content of the zirconia accounts for 3 percent to 6 percent, the content of the magnesia accounts for 2 percent to 5 percent, the content of the monox accounts for 10 percent to 20 percent, the content of the rare earth compounds accounts for 10 percent to 25 percent, the content of the modifier accounts for 5 percent to 8 percent and the content of the polypropylene random copolymer accounts for 10 percent to 30 percent. When the plastic-based master batch is prepared, all the materials are mixed, stirred, heated to be fused, overstocked and stretched into plastic-based stripes by a granulator and crushed. The tube stock manufactured by the plastic-based master batch material has a polypropylene random copolymer external layer and a tourmaline plastic-based master batch internal layer. The plastic-based master batch which is manufactured by mixing the tourmaline material and polypropylene can combine with other materials to manufacture the products with multi-function such as purification, healthcare, etc.