160 results about "Main group element" patented technology

The invention relates to a catalyst for ammonia synthesis and ammonia decomposition, and contains nitrogen compounds of main group elements and correlative carriers and additives. As a novel catalytic material, the catalyst provided by the invention shows good catalytic activity in ammonia synthesis and ammonia decomposition reactions.

The invention provides an II-II-VI alloy quantum dot, as well as a preparation method and application thereof. The preparation method comprises the steps of S1, reacting a precursor containing secondII group elements and a precursor containing first VI group elements to form an II-VI semiconductor nanocluster; S2, mixing the II-VI semiconductor nanocluster and the precursor containing the first II group elements, and obtaining a first system containing the II-II-VI alloy quantum dot through cation exchange and in-situ growth. The II-VI nanocluster formed at the beginning of nucleating is located at a nanocrystalline nucleation and growth intermediate state and is small in size, the precursor containing the first II group elements is added for carrying out cation exchange, first II group element atoms easily enter the innermost of the II-VI nanocluster so as to form an II-II-VI nanocluster similar to an alloy, and during the continuous growth process, the first II group element atoms are gradually outwards diffused to the whole particle so as to obtain the narrow half-width alloy quantum dot.

The invention relates to a Ni-Mn-Ge magnetic shape memory alloy of which the chemical formula is NixMnyGezMa, wherein M is a main group element or transition group element; and 51<x<55, 31<y<40, 5<z<20, a<5, x+y+z+a=100, and x, y, z and a represent atomic percents. The alloy is a monocrystalline material or polycrystalline material. The main group element is In, Sn, Sb, As or Si; and the transition group element is Ti, Fe or Co. The magnetic material with magnetic shape memory effect has shape memory effect and ferromagnetic property, and appears the property of entropic change (magnetic card effect) caused by magnetic-field-driven phase change and magnetic order degree change, wherein the change value is up to S=8J/Kkg.

The present invention relates to a catalyst selective hydrogenation and mono-olefin isomerization. Its carrier is aluminium oxide, and its active composition contains palladium. It is characterized by that specific surface area of said catalyst is 80-120 sq.m/g, and its specific pure volume is 0.4-0.8 ml/g. The weight percentage contents of active components are Pd 0.2-0.3%, adjuvant X, 1-5% and ajuvant X2 0-5%, in which X, is one or several kinds selected from B, P and Si, and X2 is one or several kinds selected from first main group elements and second main group elements. Besides, said invention also provides the preparation method of said catalyst and its application.

The invention relates to an anode material of a Li-ferrous disulfide battery and the Li-ferrous disulfide battery, belonging to the battery field. The anode material of the Li-ferrous disulfide battery comprises the following ingredients by weight percentage: 50-99.5 percent of ferrous disulfide powder, 0.25-25 percent of bonder, 0.25-25 percent of conductive agent and the balance first main group element compounds accounting for 0.4-10 percent of the quality of the ferrous disulfide powder; the first main group element compounds comprise one ore more o carbonate, bicarbonate, silicate, germanate, acetate, phosphate, aluminate, titanate and amino salts. In the invention, the added first main group element compounds greatly improve the discharging platform and discharging performance of the battery, the discharging platform of the battery is high, the discharging time is long, the discharge capacity is large, the heavy-current discharging property is good and the storage life is long.

The invention relates to a high selective catalyst, which mainly solves the technical problems of low raw material conversion rate and low destination product selectivity during preparing ethylene glycol by oxalic ester hydrogenation in the prior art. An active ingredient, an auxiliary agent and a carrier are adopted in the catalyst. The catalyst comprises the following components in part by weight: a) 8 to 60 parts of active intergradient selected from copper, copper oxide or mixture thereof; b) more than 0 to 20 parts of at least one auxiliary agent selected from main group metal element, transition metal element or lanthanide compound; and c) 20 to 60 parts of carrier, wherein the carrier is selected from adhesive-free molecular sieve, the specific surface is 100 to 800 square meters per gram, and the molar ratio of Si to Al is 40 to full silicon. According to the technical scheme, the high selective catalyst well solves the problems, and can be applied to the industrial productionof preparing the ethylene glycol by hydrogenation of the oxalic ester.

The invention discloses an antifreezing fluid for an automobile engine, relating to an antifreezing fluid for an automobile. The antifreezing fluid comprises the following components in parts by weight: 0-20 parts of propylene glycol, 0-20 parts of ethylene glycol, 0-20 parts of butanediol, 0-1 part of sodium phosphate, 0-1 part of sodium silicate, 0-30.0 parts of hydrochloride, 0-12 parts of borax, 0-18 parts of petroleum resin, 0-10 parts of glycine, 0-10 parts of 1,2-aminoazophenylene, 0-1.0 part of defoamer and 0-60 parts of water, wherein sodium phosphate, sodium silicate and borax are used as buffer agents; dimethicone or tributyl phosphate is used as the defoamer; dihydric alcohol is used as an antifreezing agent; 1,2-aminoazophenylene is used as a corrosion inhibitor; hydrochloride is one selected from alkaline metal, alkaline earth metal and third main group element hydrochlorides; glycine and petroleum resin are used as mildew preventives. The antifreezing fluid is capable of effectively preventing a circulation cooling fluid from being frozen, free of corrosion to a cooling system and incapable of freezing when used at low temperature of 40-50 DEG C below zero.

The invention relates to a catalyst for preparing methyl acrylate and acrylic acid, and a preparation method and an application thereof, and is used for mainly solving the problems in the prior art. The problems are relatively well solved by the technical schemes comprising that the catalyst for preparing methyl acrylate and acrylic acid is composed of a main active component, an active auxiliary agent and a carrier, wherein the main active component comprises nitrate, carbonate, aluminate, sulfate and chloride of alkali metals or alkaline earth metals, an active auxiliary agent element is selected from at least one of IIA, IIIA, VA, VIA and VIIA main group elements, IB, IIB, IIIB, IV, VB, VIB and VIII transition metal elements and lanthanides in the periodic table of elements, and the carrier is Al2O3, TiO2, ZrO2 or SiO2; for the catalyst, based on oxide, the mass percentage content of the main active component is 0.1%-50%, and the mass percentage content of the active auxiliary agent is 0.1%-20%; and the preparation method and the application of the catalyst are provided. The catalyst can be used for preparing methyl acrylate and acrylic acid by condensation reaction of methyl acetate with formaldehyde or methanol.

The invention is a method of preparing high-molecular weight fully alternative structural polycarbonate, providing a method of preparing high-molecular weight, highly alternative structural plycarbonate by using two-component catalyst to selectively catalyze epoxy alkane and carbon dioxide to react at low pressure or medium pressure. The two-component catalyst is composed of a primary catalyst tetradentate Schiff alkali metal complex (R1)(R2)SalenMX and an aid-catalyst R1R23YX1 salt, where R1 and R2 in (R1)(R2)SalenMX are -H, C1-C6 alkyls, C1-C6 alkoxys, -Cl,-Br or -NO2; M is trivalent metallic cation; X is monovalent anion; R1 and R2 in the salt are alkyls, Y is family-five element and X1 is monovalent anion. The molar ration of the primary catalyst to the aid-catalyst is 0.2-5 : 1. The catalytic efficiency reaches 10 to the power 5 g polymer/mol catalyst, the molecular weight of the polymer is over 30000, the molecular weight distribution is less than 2, the alternative structure is over 99%. The method has moderate reacting conditions, and simple operation; the used catalyst is simple to synthesize, low-cost, high-activity, and suitable for industrialized application.

The invention provides a phase change material for a gate driving device, the gate driving device and a preparation method thereof. The general formula of the phase change material for the gate driving device is Y1-xAsx, wherein Y is a phase change material which comprises at least one sixth main group element, 0<x<=0.3. According to the phase change material for the gate driving device, through doping arsenic atoms in the phase change material, a conductive material can be formed in the phase change material, thereby increasing phase change critical voltage of the phase change material and current density after switching-on. When the phase change material is used for the gate driving device, switching-on and switching-off are realized through an OTS switching characteristic of the phase change material. Furthermore when the gate driving device is in the on state, the conductive channel which is formed through doping the arsenic atoms can supply large driving current, thereby driving phase change of a phase change memory unit and realizing storage and erasing of information. The gate driving device which uses the phase change material can realize three-dimensional integration, thereby greatly improving integration degree and storage density of the memory.

The present invention provides an infrared energy-saving coating material and applications thereof, and belongs to the technical field of infrared energy-saving materials, wherein a high-emissivity infrared energy-saving material is adopted as a core component, and a dispersant accounting for 3-5% of the mass of the infrared energy-saving coating material, a liquid binder accounting for 10-50% of the mass of the infrared energy-saving coating material, and a stabilizer accounting for 2-5% of the mass of the infrared energy-saving coating material are added to prepare the infrared energy-saving coating material, wherein the high-emissivity infrared energy-saving material adopts lanthanum aluminate of the perovskite structure as a main phase, 0.01-0.25 mole of second main group element ions is doped at the lanthanum site, and 0.02-0.5 mole of transition metal element ions is doped at the aluminum site. According to the present invention, the highest emissivity of the prepared infrared energy-saving coating material can achieve 0.95, and the prepared infrared energy-saving coating material has good high temperature stability, and has great application potential in the high temperature thermal industry furnace kiln energy saving field.

This invention involves a mixed C5 petroleum resin through catalytic hydrogenation to produce mixed C5 hydrogenation resin oil catalysts, the weight ratio of active component : 100 Alumina; Palladium 0 .2-1.2; transition metals 0.06-0.48 ; 0.1-5 copies of rare earth metals; 4th main group elements 0.06-2.4 ; alumina surface area of 80-150 m2 / g, pore volume 0 .2-0.4 ml / g, transition metal is copper, nickel, cobalt, zinc, and rare earth metals is cerium, lanthanum, protactinium, the fourth main group elements is tin, germanium, lead. Carrier will use rare earth metal nitrate solution impregnated and then baking. Then puff the main group metal chloride solution on to the carrier. Then puff palladium chloride and transition metal chloride mixed solution on to the carrier, reduction, to obtain catalyst, used for C5 hydrogenation resin oil production which takes a high content of C5 fraction of isoprene and arene. It solved the problem of low bromine value and hue high in production, the products of unsaturated bond was significantly reduced, the color more superficial, catalytic more activity, long service life.

The invention relates to a preparation method of a carbon-containing MAX phase material. M is a transition group metal element; A is a main group element; and X is C. A pestle-mortar mixing or vacuumpugging process is adopted, mixed powder of M source powder and A source powder is evenly mixed with a liquid organic carbon source in a certain proportion to obtain plastic pug, the pug is subjectedto hot-pressing curing forming, and then the carbon-containing MAX phase material is obtained through pressure-free firing. Compared with the prior art, the method introduces the liquid organic carbonsource, can realize more uniform dispersion of a carbon component in a green body, has a higher carbon residue rate, can be pyrolyzed and converted into the carbon component with high reaction activity in the heating process, and is beneficial to reaction synthesis of the high-purity carbon-containing MAX phase material. The method is simple in preparation process and low in requirement on firingequipment, and the problems of low product purity and high preparation cost in the prior art are solved.

The invention relates to a catalyst for ammonia synthesis. The catalyst comprises nitrogen containing/hydrogen containing/nitrogen and hydrogen containing compounds of main group elements, and nitrides of transition metal VIII group elements as well as related carriers or additives. The product is a novel catalyst for ammonia synthesis, and has excellent catalytic activity in the reaction of ammonia synthesis, especially in a condition with relatively low temperature and low pressure (lower than 30 bar, and lower than 300 DEG C).

The invention relates to an alloy thermoelectric semiconductor material and a fabrication method thereof. The chemical formula of the alloy thermoelectric semiconductor material is (GeTe)<1-x>(PbSe)<x>, and x is more than 0 but less than0.4. During fabrication, simple elements Ge, Te, Pb and Se are sequentially loaded in a quartz ampoule from small to large and are packaged after vacuumizing, andthe steps of melting quenching, annealing quenching and hot-press sintering are sequentially performed to finally fabricate the alloy thermoelectric semiconductor material. Compared with the prior art, substitution of the elements (Ge/Pb and Te/Se) in the main group are performed on positions of a negative ion and a positive ion in a GeTe material, the large-range control of carrier concentrationis achieved, the carrier concentration level of the GeTe material is optimized, meanwhile, the thermoelectric merit figure of the material is also increased by point defect introduced by element substitution, the lattice thermal conduction of the material is substantially reduced as well as the carrier concentration is regulated, and a new idea is provided for improvement of thermoelectric performance of a GeTe-based thermoelectric material and same-type material.

The invention belongs to the technical field of inorganic nanometer material, in particular relates to a high fluorescence property nanometer composite microsphere and the production method thereof. The high fluorescence property nanometer composite microsphere mainly comprises VI main group elements, IV main group elements and IIB transition group elements; the production method is a sol-gel method, and a plurality of fluorescence quantum dots which are surface-finished are inlaid in a silicon dioxide dielectric material in the range of 20-70 DEG C to form the high fluorescence property nanometer composite microsphere; and the fluorescence property and the particle size of the high fluorescence property nanometer composite microsphere can be adjusted through controlling the consumed amount of fluorescence quantum dots, alkoxysilane, alcohol and ammonia in the preparation process. The invention has easily-obtained raw material, low cost, simple operation and easy control; the obtained high fluorescence property nanometer composite microsphere has the advantages of good size controllability, adjustable fluorescence yield and the like, the particle size of the microsphere is 500nm-1000nm, and the quantum yield can change in the range of 15-25 percent; and due to good fluorescence property and good biocompatibility, the invention has wide application prospect in biological markers, medicine tracing, in vivo imaging and the like of the biological, medical and medicine fields.

The invention provides a modified cathode active material, a preparation method of the modified cathode active material and a lithium secondary battery, the modified cathode active material comprisesa cathode active substance in the inner core and a coating layer coated on the surface of the cathode active substance. The coating layer is in a double-layer structure and comprises an inner layer coated on the surface of the cathode active substance and an outer layer coated on the surface of the inner layer. The inner layer is chosen from oxides, the general formula is NxOy, N is one or more oftransition metal elements and third main group elements, and y/x is more than or equal to 1/4 and less than or equal to 4. The outer layer is chosen from lanthanum manganese strontium oxides having aperovskite structure. The modified cathode active material prolongs the cycle and storage lives of the lithium secondary battery, the polarization of a microcell of a cathode sheet is reduced, the overall resistance value of the lithium secondary battery is reduced, and the dynamic performance of the lithium secondary battery is improved.

The invention discloses an organic monomer containing 8-hydroxyquinoline boron, a conjugated polymer based on the monomer, a preparation method and application, and belongs to the technical field of preparation of the conjugated polymer containing a main group element and application of photoelectrical properties of the conjugated polymer. The preparation method of the compound has the outstanding advantages of being easy and convenient to operate, mild in reaction condition, capable of conducting large-scale production, high in adaptability to substrate, free of column chromatography purification and the like; the prepared monomer and the polymer are good in photochemical stability, high in fluorescence quantum yield and excellent in solubility, and a firm foundation is laid for sensing application and photoelectric property application of the monomer and the polymer.

The invention relates to a warm white light light-emitting diode (LED) and lithium matter fluorescent powder thereof, wherein the lithium matter fluorescent powder is used in the warm white light LED, adopts oxides of Ith and IIIth main group elements in a periodic table of elements as a matrix, and takes elements with transition in electron d layer and f layer as activation elements; the matrix of the fluorescent powder is formed by solid solutions of similar aluminates of lithium and yttrium, with the chemical formula of Li alpha (Gd1-xYx) 3AI5 plus alpha O12 plus 2 alpha: TR; and when the matrix is activated by short wave radiation, ion of the activation element can give off yellow orange light which is mixed with short wave radiation emitted by InGaN semiconductor heterojunction to form the warm white light. The warm white light LED uses the fluorescent powder to ensure that partial transmission can reach 15 to 30 percent of first-level blue light radiation of the InGaN semiconductor heterojunction, and 70 to 85 percent of the second orange-yellow radiation. In addition, the invention also discloses a preparation method of the fluorescent powder.

Belonging to the technical field of catalysis, the invention provides a catalyst system for ethylene selective oligomerization. The catalyst system consists of three components: a ligand a; a transition metal compound b, which is a metal compound of IVB-VIII group; specifically, the ligand a at least contains one group shown as general formula I in the specification, the linking group A in the formula I has a main chain containing alkyl, alkenyl or aryl and a heteroatom, wherein the heteroatom is one of silicon, tin, boron, phosphorus and nitrogen; the group E is a sixth main group element oxygen or sulfur; and R1, R2 and R3 are substituent groups of phosphorus atom, nitrogen atom and group E respectively, and can be the same or different. The catalyst system provided by the invention hashigh activity, the target products 1-hexene and 1-octene have high selectivity, the mass percentage content of C6-C8 linear alpha-olefin in the products is greater than 90%, and the catalyst has the advantages of simple synthesis, low cost and long service life.

The invention discloses an organic electroluminescent device and a manufacturing method thereof. The organic electroluminescent device comprises a substrate, an anode layer, an organic functional layer and a cathode layer, wherein the anode layer is formed on the substrate; the organic functional layer is formed on the anode layer; the cathode layer is formed on the organic functional layer; a cathode modification layer containing No.I main group elements is also formed between the organic functional layer and the cathode layer; and the cathode modification layer is prepared from a compound which is directly decomposed into the No.I main group elements under the vacuum evaporation plating condition. In the invention, after a luminous layer is formed, the cathode modification layer is prepared; the electron injection capacity of a cathode interface is improved by the addition of the cathode modification layer, so that the performance of the device is obviously improved; meanwhile, in the preparing process, a material process has high feasibility, so that the yield of the device in the technological preparation process is further improved.