40 results about "Bismuth compound" patented technology

Methods for preparing catalysts for oxidative dehydrogenation (ODH) of alkanes such as ethane are provided. An exemplary method includes forming a slurry including metal oxides; one or more of a bismuth compound, an antimony compound, and a tellurium compound; a reducing agent; and water; and heating the slurry to form the catalyst. The metal oxides include an oxide of molybdenum and an oxide of vanadium. The bismuth compound includes bismuth oxide, bismuth hydroxide, or a bismuth carbonate. The antimony compound includes an oxide of antimony, an antimony acetate, or an antimony ethoxide. The tellurium compound includes tellurium dioxide. The reducing agent includes molybdenum dioxide and may further include vanadium dioxide. The methods use all inorganic reagents, with no build up COx pressure observed during the hydrothermal synthesis.

This invention belongs to the field of vanadium redox flow batteries, specifically relating to a vanadium redox flow battery precursor, a vanadium redox flow battery, and a method for preparing the same. The vanadium redox flow battery precursor of this invention includes a positive electrode electrolyte precursor and a negative electrode electrolyte precursor; the positive electrode electrolyte precursor includes vanadium ions, an inorganic acid, a positive electrode side reaction inhibitor precursor, and a solvent; wherein the positive electrode side reaction inhibitor precursor is aniline; the inorganic acid includes hydrochloric acid; the negative electrode electrolyte precursor includes vanadium ions, an inorganic acid, a negative electrode side reaction inhibitor precursor, and a solvent; wherein the negative electrode side reaction inhibitor precursor is a metal compound; the metal compound is selected from one or more of tin compounds, bismuth compounds, and antimony compounds; the inorganic acid includes hydrochloric acid.

Provided is a bismuth compound for a photoresist, the bismuth compound being represented by chemical formula 1: <Chemical formula 1> In chemical formula 1, R1 to R5 are each independently selected from the group consisting of: hydrogen; deuterium; a C1-C20 alkyl group substituted or unsubstituted with at least one among deuterium, a halogen, and a cyano group; and a C6-C20 aryl group substituted or unsubstituted with at least one among deuterium, a halogen, and a cyano group, and at least one of R4 or R5 is a C1-C20 alkyl group substituted with at least one of a halogen or a cyano group.

The invention belongs to the technical field of sodium ion batteries, and provides a high-safety long-circulation layered oxide positive electrode material and a preparation method thereof.The preparation method comprises the following steps that S1, a nickel source, an iron source, a manganese source and a sodium source are subjected to ball-milling mixing, high-temperature sintering, smashing and sieving to obtain a NawNixFeyMnzO2 material, 0.9 < w < 1.1, 0.4 < x < 0.1, 0.4 < y < 0.1 and 0.4 < z < 0.1; and S2, carrying out ball-milling mixing on the NawNixFeyMnzO2 material and a bismuth-containing compound, carrying out high-temperature sintering, and carrying out crushing and sieving to obtain the layered oxide positive electrode material. According to the invention, the bismuth-containing compound is adopted to carry out coating modification on the layered oxide positive electrode material, the bismuth-containing compound coating layer can inhibit active oxygen species migrated from the core of the layered oxide, a more stable interface is formed at the same time, oxygen is inhibited from being released into an electrolyte, and the thermal safety and the structural stability are improved.

The present invention provides a bismuth sulfide which is easy to reflect infrared rays and has a blackness equivalent to or higher than that of carbon black. The present invention is a bismuth sulfide particle including agglomerated secondary particles formed by agglomeration of primary particles, and having a cumulative 50% particle diameter (D1) of 0.2 μm or more and 10 μm or less in a volume cumulative distribution measured by a laser diffraction / scattering particle size distribution measuring device. The present invention includes a process of heating a bismuth compound and a sulfur compound in a dispersion medium in the presence of a protective agent at 30°C or higher and 100°C or lower.

The invention discloses a multistage porous graphite felt for a flow battery and a preparation method of the multistage porous graphite felt, and belongs to the technical field of chemical energy storage. The invention aims to solve the problems that the existing graphite felt electrode is low in catalytic activity and the catalyst is easy to fall off. The preparation method comprises the following steps: uniformly mixing thermosetting resin, a pore-forming agent and a bismuth-containing compound to prepare a precursor mixed solution; then immersing the graphite felt in the mixed solution for solvent heat treatment, so that the precursor uniformly permeates and is firmly attached to the surface of the graphite felt fiber; and performing high-temperature pyrolysis in an inert atmosphere. In the pyrolysis process, the resin is converted into a conductive porous carbon layer in situ, the pore-forming agent is decomposed to form rich multi-stage pore channels, and the bismuth-containing compound is reduced into a highly dispersed metal bismuth nano-catalyst by carbon thermal reduction and is confined in a porous carbon skeleton. The graphite felt electrode prepared by the invention has high catalytic activity, excellent mass transfer channels and high stability, and is simple in preparation process, controllable in cost and suitable for large-scale production.

The invention discloses titanium-containing leather, which is prepared from a solvent-free PU (polyurethane) mixture prepared by mixing a component A and a component B through blade coating, baking, base cloth attaching and separation processes, and the component A comprises the following components in percentage by mass: 80-85% of polyether polyol, 12-15% of polyester polyol, 2-8% of nano titanium powder, 0.2-0.6% of a zinc-bismuth compound and 0.1-0.4% of a platinum-carbon catalyst. By adding nano titanium powder into a solvent-free PU mixture and combining a specific component ratio and a preparation process, the product has good high temperature resistance, super-strong corrosion resistance and antibacterial property and is suitable for various application scenes such as outdoors, home furnishing, fitness equipment and the like, the leather is endowed with excellent mechanical properties due to the super strength of titanium, the leather is suitable for lightweight design, and the cost is reduced. The leather material has the advantages of high temperature resistance, corrosion resistance, biocompatibility and the like, can be widely applied to the fields of new energy automobiles and aerospace, has excellent biocompatibility, and meets the requirements of scenes such as medical and physical therapy equipment, children products, dining table mats and the like on material safety.

The application discloses a high-nickel positive electrode material and a preparation method and application thereof, and belongs to the technical field of new energy sources. x Co y M z M´ w O2 and a porous base material and a gap-filling substance, wherein 0.80<=x<=0.98, 0.02<=y<=0.20, 0<=z<=0.06, 0<w<=0.02; x+y+z+w=1; M is at least one of Mn and Al, M´ is at least one of Y, Sr, La, B, Mg and Ti; the gap-filling substance exists in the inside of the pores and comprises a sintered product derived from an additive B, the additive B comprises a zirconium-containing compound and at least one of a tungsten-containing compound, an antimony-containing compound and a bismuth-containing compound. The high-nickel positive electrode material has excellent long cycle performance and rate performance. The application further provides a preparation method and application of the high-nickel positive electrode material.

The invention provides an ultra-wide-band gain spectrum epitaxial material structure of a tunable laser and application of the ultra-wide-band gain spectrum epitaxial material structure. The epitaxial material structure comprises a substrate, a lower cladding, a waveguide layer, an upper limiting layer, an upper cladding and a contact layer which are sequentially arranged from bottom to top, the waveguide layer comprises an intrinsic waveguide layer and a bismuth compound quantum dot layer embedded in the intrinsic waveguide layer, and the gain bandwidth is widened through the energy band anti-cross effect instead of suppressing radiation recombination. The epitaxial material structure grows in a molecular beam epitaxy or metal organic vapor phase epitaxy mode, and the crystal quality is optimized in combination with a rapid thermal annealing process. By regulating and controlling the number of layers of the quantum dots and the bismuth component, the ultra-wideband gain spectrum coverage from near ultraviolet to near infrared bands is realized, the gain spectrum is wide, the gain peak value of the material is relatively high, and meanwhile, the material has a low linewidth enhancement factor and high temperature stability. The epitaxial material structure can be monolithically integrated in a DFB laser array and a semiconductor optical amplifier, and a core gain medium is provided for a high-performance tunable semiconductor laser.

A resist composition comprising a hypervalent bismuth compound having formula (1) and a solvent is provided. When processed by photolithography using high-energy radiation, the resist composition exhibits a high sensitivity and resolution. The non-chemically-amplified resist composition exhibits a high sensitivity and resolution when processed by photolithography using high-energy radiation, typically EB and EUV lithography.

The present invention belongs to the field of chemical engineering. Disclosed are an acrylonitrile catalyst, and a preparation method therefor and the use thereof. The preparation method comprises: (1) mixing solutions of a molybdenum compound and a bismuth compound at an Mo / Bi molar ratio of 0.5-1.5 to prepare bismuth molybdate containing an α-phase and / or a γ-phase; (2) synthesizing a pentasil-type molecular sieve having an Si / V molar ratio of 50-150 from a silicon source, an organic amine, and a vanadium compound; (3) mixing a silica sol with a molybdenum compound solution at an Si / Mo molar ratio of 0.5-1, then sequentially adding solutions of a nickel, a tungsten, and a thallium compound, and phosphoric acid, the molecular sieve, and the bismuth molybdate thereto, such that the ratio of the weight percentages of Mo, Bi, Ni, W, Tl, V, and P in the catalyst, on the basis of oxides, is (37-38):(4-6):(3-5):(2-3):(0.2-0.3):(0.1-0.3):(0.7-0.8); (4) adding SiO2 powder thereto, such that SiO2 accounts for 45 wt% to 55 wt% of the catalyst; and (5) pulping and homogenizing the resulting mixture, then spray molding same at an outlet temperature of 150-180°C, and calcining same in an air atmosphere at 550-680°C for 1-6 h. The catalyst has a good activity, selectivity and stability, and is wear-resistant.

This invention proposes a Bi4V2O 11 This invention relates to Bi4V2O heterostructure composite materials and their in-situ preparation method, belonging to the technical field of inorganic non-metallic materials. 11 The preparation of the / BiVO4 heterostructure composite material includes the following steps: Bi4V2O 11 The material was annealed in an oxygen-containing atmosphere to obtain Bi4V2O. 11 / BiVO4 heterostructure composite material. This invention utilizes the bismuth-rich compound Bi4V2O 11 A method for the volatilization of Bi in an oxygen-rich environment to construct Bi4V2O 11 / BiVO4 heterostructure. The prepared Bi4V2O 11 The / BiVO4 heterostructure photocatalyst exhibits excellent activity in photocatalytic degradation of organic pollutants and photocatalytic production of hydrogen peroxide; the preparation process is simple and applicable to various situations such as powders and thin films with different morphologies; the present invention combines process simplicity, wide applicability and superior performance, and has important application value in the fields of photocatalysis and functional electronic devices.

Disclosed herein is an aqueous electrocoating material including at least one specific binder and at least one bismuth compound, a method of using the aqueous electrocoating material for at least partially electrocoating a substrate, a coated substrate obtained from said method and an article or component including said substrate.

To provide a laser marking composition capable of forming a two-dimension film which is excellent in heat resistance and readability when a one dimensional code or a resinous code is printed, and in which generation of gas during printing is suppressed.SOLUTION: The laser marking composition contains at least one (meth) acrylic resin, a bismuth-containing compound, and a crosslinking agent having a triazine ring skeleton, wherein the total proportion of a methacrylic acid-derived structural unit and a methacrylic acid alkyl ester-derived structural unit in all structural units of the (meth) acrylic resin is less than 45 mass%.SELECTED DRAWING: Figure 1

The invention relates to a method for manufacturing an X-ray booth which is composed of a plurality of elements (11, 12, 14, 17, 21, 22, 23, 24, 31, 32, 41, 42) attached to one another and / or to a frame, wherein a butt joint (18, 19a, 19b) and / or a joint (20, 20a, 20b) is arranged on or between a plate-shaped end section of a first element of the plurality of elements and an adjacent plate-shaped end section of a second element of the plurality of elements of the X-ray booth. To enable simpler and more cost-effective manufacturing of such X-ray booths and improved protection against escaping X-rays, the process includes the following steps: - Arrange the plate-shaped end sections of the first and second elements side by side at a predetermined angle, - Filling the joint (20, 20a, 20b) with a sealant (5, 35, 45) or applying a sealant (5, 35, 45) directly to the joint (18, 19a, 19b) in each case by means of a sealant bead (25) such that the sealant bead (25) does not fall below a predetermined thickness, wherein the sealant (5, 35, 45) comprises a polymeric matrix material and a bismuth compound as a filler, and - Curing of the sealing material (5, 35, 45). The invention further relates to a corresponding X-ray booth.

An object of the present invention is to provide a preparation method for improving the edge part rust prevention property in the preparation of a cationic electrodeposition coating composition containing a bismuth compound as a curing catalyst. The present invention provides a method for preparing a cationic electrodeposition coating composition, including a step of preparing a resin emulsion (i) containing an aminated resin (A) and a blocked isocyanate curing agent (B), a step of preparing a pigment dispersion paste (ii) containing a bismuth-metal oxide mixture liquid (C) containing a bismuth compound (c1), a metal oxide (c2), a monohydroxycarboxylic acid (c3) having 3 to 5 carbon atoms in total and a solvent; a pigment dispersion resin (D); a polyvalent acid (E); and a pigment (F), and a step of mixing the resin emulsion (i) and the pigment dispersion paste (ii).

The present invention makes it possible to provide a method for producing a polymer compound that contains a repeating unit represented by formula (3), said method comprising a step for reacting, in the presence of an oxidizing agent, a bismuth compound represented by formula (1) and a dicarboxylic acid compound represented by formula (2). (In formula (1), X1-X3 may be the same or different and each represent a C6-14 aromatic hydrocarbon group.) (In formula (2), R represents a divalent organic group.) (In formula (3), X1-X3 and R are as defined above. n represents an integer of 2 or more.)

This application discloses a bismuth electrode material and its preparation method, belonging to the field of lithium-ion battery electrodes. The bismuth electrode material is obtained by electrochemical reduction of a bismuth compound. As a negative electrode material for lithium-ion batteries, the bismuth electrode material exhibits high energy density, good cycle stability, and excellent rate performance. Furthermore, the preparation process is simple.

Aqueous cathodic electrocoating compositions, methods for preparing aqueous cathodic electrocoating compositions, and methods for electrodepositing coatings from aqueous cathodic electrocoating compositions are provided. An aqueous cathodic electrocoating composition having a binder resin and a crosslinking agent is provided. In the aqueous cathodic electrocoating composition, a bismuth-sugar solution is used to provide a catalytic amount of a bismuth compound dispersed in the electrocoating composition.

A thermally conductive particle containing at least an aluminum raw material, a zinc raw material, and a fired product obtained by firing other raw materials than the aluminum raw material and the zinc raw material, the content of the zinc raw material being 25-70 parts by mass (inclusive) per 100 parts by mass of the aluminum raw material, and the content of the zinc raw material being 70-90 parts by mass (inclusive) per 100 parts by mass of the aluminum raw material. The other raw material contains at least one compound selected from the group consisting of a boron compound, a tungsten compound, a titanium compound, a bismuth compound and a fluorine compound, the content of the other raw material is 0.05-20 parts by mass per 100 parts by mass of the aluminum raw material, and predetermined conditions are satisfied.

The present invention belongs to the technical field of inorganic pigment production, and particularly relates to a method for in-situ preparation of bismuth vanadate composite pigment. This preparation method involves first dissolving a bismuth compound in an acidic solution, adding a surfactant to dissolve the compound thoroughly, and then adding nickel titanium yellow particles to the mixture. A vanadium compound is then added to the mixture under strong shearing force, and the mixture is allowed to react at a predetermined temperature and pH. The precipitate separated from the mixture is washed, dried, and then heat-treated to obtain a bismuth vanadate composite pigment powder. Under strong shearing force, the synthesis reaction of bismuth vanadate can be carried out uniformly in-situ on the surface of nickel titanium yellow. This method allows for faster and more uniform in-situ synthesis and avoids the need for large amounts of basic solution in conventional methods. The resulting bismuth vanadate composite pigment has high chromaticity, superior hiding power, and tint color intensity. The method of the present invention is green and efficient, achieves uniform reaction, and produces excellent product performance, making it suitable for industrial continuous production.

The invention provides a bismuth-containing coated silicon-carbon negative electrode material and a preparation method and application thereof, and relates to the technical field of lithium ion battery negative electrode materials, the negative electrode material comprises a silicon-carbon material and a bismuth-containing material coating the silicon-carbon material, the bismuth-containing material includes a first coating layer composed of a bismuth compound and a second coating layer composed of a conductive agent. The preparation method of the negative electrode material comprises the following steps: providing a silicon-carbon negative electrode material; providing a bismuth compound powder; the preparation method comprises the following steps: mixing bismuth compound powder, a silicon-carbon negative electrode material and a binder in a dispersant solution, and carrying out spray drying and curing to form a bismuth compound first coating layer; and then mixing the materials with conductive agent slurry and a binder, and performing spray drying and curing again to form a second coating layer of the conductive agent. By adopting the technical scheme, the advantage that the full-electric voltage platform of the bismuth oxide is about 3.0-3.5 V is utilized, so that the problem that the impedance is sharply increased under low SOC (State of Charge) caused by over-high silicon content in the silicon-carbon negative electrode is solved.

The invention belongs to the field of luminescent materials, and discloses a magnesium-based long-afterglow luminescent material and a preparation method thereof, the chemical expression of the material is Mg8-x-yLiScGe5O20: xBi, yDy, Bi and Dy replace Mg sites in crystals, x and y are substitution rates, x is more than or equal to 0.005 and less than or equal to 0.125, and y is more than or equal to 0.005 and less than or equal to 0.1. The material is prepared by adopting a high-temperature solid-phase method, and is calcined in an air environment at 1175 DEG C for 4 hours. After the magnesium-based long-afterglow luminescent material is irradiated by an ultraviolet lamp for a short time, the full-wave band long-afterglow emission of ultraviolet light, visible light and near-infrared light from 300 nm to 400 nm, 450 nm to 550 nm and 550 nm to 600 nm to 620 nm to 900 nm is realized. By regulating and controlling the proportion of the bismuth-containing compound and the dysprosium-containing compound, the long-afterglow emission intensity and the long-afterglow luminescence time of the long-afterglow luminescent material can be remarkably enhanced. The magnesium-based long-afterglow luminescent material disclosed by the invention has the advantages of simplicity in preparation, no need of reducing atmosphere, long afterglow time and the like. The ultraviolet light-visible light-near-infrared light long-afterglow luminescent material capable of being excited by the ultraviolet lamp has a relatively great application prospect in the fields of photocatalysis, optical information storage, optical anti-counterfeiting, emergency lighting, near-infrared animal imaging and the like.

The invention discloses an in-situ carbon-loaded platinum-bismuth solid solution catalyst as well as a preparation method and application thereof, and aims to solve the problems that an existing preparation process of a carbon-loaded platinum-based catalyst is tedious in step, relatively long in time consumption in the preparation process, easy to agglomerate nanoparticles in the loading process and the like. The preparation method comprises the following steps: dissolving a platinum compound and a bismuth compound in a polyol solvent to obtain a platinum-bismuth mixture precursor solution; adding a carbon carrier into the precursor solution until the carbon carrier is completely dissolved to obtain a mixture solution; heating the mixture solution to 20-100 DEG C, and rapidly pouring the reducing agent solution into the mixture solution for reduction reaction; and sequentially washing, centrifuging and drying the reacted solution to obtain the in-situ carbon-loaded platinum-bismuth solid solution catalyst. The preparation method disclosed by the invention is simple and high in synthesis efficiency, and the platinum-bismuth solid solution nanoparticle catalyst which is uniformly dispersed in a load state can be obtained. In addition, the prepared catalyst has very high electro-catalysis hydrogen evolution reaction performance.

Methods for preparing catalysts for oxidative dehydrogenation (ODH) of alkanes such as ethane are provided An exemplary method includes providing a first mixture including metal oxides; a reducing agent; and one or more of a bismuth compound, an antimony compound, and a tellurium compound; and heating the first mixture to form the catalyst. The first mixture is essentially free of water. The metal oxides include an oxide of molybdenum and an oxide of vanadium. The bismuth compound includes bismuth oxide, bismuth hydroxide, or a bismuth carbonate. The antimony compound includes an oxide of antimony, antimony acetate, or antimony ethoxide. The tellurium compound includes tellurium dioxide.

The present invention provides: a bismuth compound represented by chemical formula 1, which can be effectively usable as a thin film precursor; and a composition for forming a thin film, comprising same. In addition, the present invention provides a method for synthesizing bismuth selenide (Bi2Se3) with excellent uniformity and high purity by using the composition for forming a thin film. [Chemical formula 1] (In chemical formula 1, R1) to R12 are each independently linear or branched C1-C10 alkyl.)

The invention discloses a preparation method of tantalum-doped barium bismuthate tungstate with an X-ray absorption function. The preparation method comprises the following steps: preparing the following raw materials in molar mass: 0.2 to 0.5 mol of bismuth compound, 0.2 to 0.5 mol of tantalum compound, 0.1 to 0.2 mol of barium salt and 0.1 to 0.2 mol of tungsten compound; the preparation method comprises the following steps: dissolving the raw materials in 500-2000mL of polar solvent, and carrying out hydrothermal reaction; alternately washing the obtained precursor with distilled water and absolute ethyl alcohol to remove impurities, and then carrying out drying treatment; and finally, calcining to finally form the nano powder. The invention provides a preparation method of tantalum-doped barium bismuthate with an X-ray absorption function, solves the problems of a traditional lead-containing protective material, and also has the X-ray absorption function, and the invention also provides an application of the tantalum-doped barium bismuthate with the X-ray absorption function in the X-ray protective material.

The present invention is a method for producing a thin film in which a bismuth metal thin film is formed using a bismuth compound represented by general formula (1) and at least one substance selected from the group consisting of Bi (SiMe3) 3 and a reducing gas, and a raw material for forming a thin film. In general formula (1), R1 represents a hydrogen atom or a hydrocarbon group having 1-5 carbon atoms, and R2, R3, and R4 each independently represent an alkyl group having 1-3 carbon atoms.

The present invention provides: a curable composition which contains a bismuth compound, wherein a phosphoric acid ester having a (meth)acryloyl group is bonded to bismuth, and a nitrile compound having a radically polymerizable carbon-carbon double bond; a cured body which is obtained by curing this curable composition; a multilayer body which is composed of the above-described cured body and a cured body that is obtained by curing a photochromic curable composition; and a radiation protective material which is formed of the above-described cured body or the above-described multilayer body.

The invention belongs to the technical field of binders, and relates to a two-component polyurethane structural adhesive as well as a preparation method and application thereof. The bi-component polyurethane structural adhesive comprises a component A and a component B, the component A comprises modified castor oil, bio-based polyol, a chain extender, a dewatering agent, a filler, a silane coupling agent, an anti-aging agent, a catalyst A and a catalyst B; the component B comprises polyisocyanate, a polyisocyanate polymer, a curing agent, a dewatering agent, fumed silica, a silane coupling agent and a plasticizer; the preparation method of the catalyst A comprises the following steps: mixing a sulfydryl-containing organic compound and an organic bismuth compound under an acidic condition, and carrying out a coordination reaction to obtain the catalyst A; the catalyst B comprises an organic metal compound. The structural adhesive disclosed by the invention can be quickly cured for 120-240 seconds at the temperature of 60-80 DEG C; the viscosity change rate is less than 20% after the structural adhesive in the mixing pipe is stood for 1 hour at room temperature.