63 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.

Provided is a composition that contains bismuth, a first bismuth compound having at least one of an acryloyl group and a methacryloyl group, and a coordinating organic compound having an acid dissociation constant pKa of 1.5 or more. Also provided are a curable composition containing said composition; a cured body of said curable composition; an optical product, a lens, eyeglasses, and an antimicrobial / antiviral agent containing said cured body; and a resin composition.

The present application relates to a kind of preparation method of bismuth trifluoride, belong to bismuth compound preparation technical field.The preparation method of bismuth trifluoride of the present application includes the following steps: bismuth-containing compound powder is hydrothermally reacted with hydrofluoric acid;The bismuth-containing compound is one or any combination of bismuth oxide, bismuth oxychloride, bismuth trichloride.The preparation method of bismuth trifluoride of the present application carries out hydrothermal reaction to bismuth oxide, bismuth oxychloride, bismuth trichloride and hydrofluoric acid, and the high temperature and high pressure generated by hydrothermal reaction are used to improve the reactivity, solve the problem that bismuth oxide, bismuth oxychloride and bismuth trichloride are not completely reacted with hydrofluoric acid under normal pressure, resulting in low yield and low purity, product can be obtained by one-step reaction.The preparation method of bismuth trifluoride of the present application is simple, and route is short, the solvent used is water, cost is low, yield is high, and it is economic and environmental protection.

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 invention relates to the technical field of biomedical materials, in particular to hydrogel as well as a preparation method and application thereof. The hydrogel is obtained by crosslinking a polymer framework material, a functional additive and a shielding agent, the polymer framework material comprises any one or more of gelatin, carboxymethyl chitosan, hyaluronic acid, chitosan, collagen, polyvinyl alcohol, sodium carboxymethyl cellulose and sodium alginate; the functional additive comprises any one or more of tannic acid, tea polyphenol, vitamin C and procyanidine; the shielding agent comprises any one or more of barium sulfate, bismuth simple substance and bismuth-containing compound. The hydrogel provided by the invention can effectively isolate radiotherapy rays, reduce oxidative stress reaction, provide a protective barrier for normal tissues in a radiotherapy process and reduce radiation damage, has excellent tissue repair promotion capability, is safe in components, fast in metabolism and adjustable in flowability and adhesion, and is more beneficial to adaptation in rectum or skin tissues.

The invention relates to a resist composition, a laminate, and a pattern forming method. The present invention addresses the problem of providing: a non-chemically amplified resist composition having excellent sensitivity and resolution in optical lithography using high-energy rays; a laminated film provided with a resist film obtained from the resist composition; and a pattern forming method using the resist composition. The solution of this problem is a resist composition containing a superatomic bismuth compound, a carboxyl group-containing polymer, and a solvent.

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 invention discloses a Ni-doped Bi4O5Br2 bifunctional photocatalyst as well as a preparation method and application thereof. The preparation method of the photocatalyst comprises the following steps: dissolving a bismuth-containing compound in ethylene glycol to form a solution A; dissolving a bromine-containing compound in ethanol to form a solution B; dropwise adding the solution B into the solution A to form a solution C; adding a nickel-containing compound into the solution C to form a reaction solution; and transferring the reaction solution into a reaction kettle for heating, and after the reaction is completed, filtering, washing and drying to obtain Ni-doped Bi4O5Br2 powder. According to the invention, Ni is doped into Bi4O5Br2, the Bi4O5Br2 has double functions of LSPR effect and impurity energy level engineering, the LSPR effect of Ni enables infrared light to be converted into hot electrons and heat energy and provides thermodynamic driving force for CO2 activation, and Ni doping also generates impurity energy level which can capture carriers and effectively inhibit recombination of electrons and holes, so that the performance of the Bi4O5Br2 is improved. The carbon dioxide reduction effect of the photocatalyst is remarkably improved through the dual-function synergistic effect.

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.

The non-chemically amplified resist composition exhibits a high sensitivity and resolution when processed by photolithography using high-energy radiation, typically electron beam (EB) lithography and EUV lithography. The resist composition can be applicable for forming a pattern forming process. The resist composition comprises a hypervalent bismuth compound, a carboxylic acid, and a solvent.

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.

This invention discloses a CuI / Bi5O7I composite photocatalyst, its one-step hydrothermal synthesis method, and its application, belonging to the field of catalyst material technology. A template agent, a copper compound, and a bismuth compound are ultrasonically mixed in water to obtain an initial solution. Potassium iodide solution is then rapidly added. The pH of the solution is adjusted to 7-11, and after stirring, a hydrothermal reaction is carried out at 150-180℃ for 30-200 min. After the reaction, the product is separated by centrifugation. The separated product is then soaked in an organic solvent and freeze-dried to obtain the CuI / Bi5O7I composite photocatalyst. The CuI / Bi5O7I composite photocatalyst prepared by this invention can reduce CO2 to multi-carbon products under visible light irradiation. Furthermore, the catalyst has a narrow band gap, a wider light absorption range, and the formation of a heterojunction reduces electron-hole recombination, showing great application potential in the field of photocatalytic CO2 reduction.

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.

To provide a polyol-containing composition which prevents clogging in a filter inside a foaming machine while exhibiting good foamability, and enables formation of a polyurethane foam having high flame retardancy, in a process of reacting and foaming polyisocyanate by the foaming machine.SOLUTION: A polyol-containing composition contains polyol, a foaming agent, a catalyst, and a flame retardant, wherein the catalyst contains at least one metal catalyst selected from a bismuth compound and a tin compound, and the flame retardant contains a bromine-based flame retardant having a structure including at least two benzene rings per one molecule.SELECTED DRAWING: None

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.