73 results about "Bismuth carbonate" patented technology

A catalyst for synthesizing vinyl acetate from acetylene and acetic acid is prepared from activated carbon, zinc acetate and alkaline bismuth carbonate in mass ratio of 100: (27-40): 0.026 by excessive solution dipping method.

The invention discloses a catalyst for production of 1,4-butynediol and a preparation method of the catalyst, belongs to the field of catalyst research, more particularly relates to a load type catalyst for production of 1,4-butynediol in a slurry reactor and a preparation method of the catalyst. According to the method, nanosilicon dioxide which has a larger external specific surface is used as a carrier, copper and bismuth are attached to the carrier by adopting a settling and depositing method, the active components of the catalyst exist in a form of basic cupric carbonate, and the catalyst comprises the following components in percentage by mass: 20-50 percent of carrier, 35-70 percent of basic cupric carbonate and 2-15 percent of bismuth subcarbonate. The prepared catalyst has the characteristics of good activity and high selectivity and is easy to activate.

A carbon oxide sensor having high sensitivity capable of reduction of influence of humidity is provided. A detection electrode and a counter electrode are provided on one side of an electrolyte, respectively. The detection electrode contains a metal oxide and a metal carbonate including plural components. The metal carbonate preferably contains a first component of alkali metal carbonate and a second component of at least one element selected from the group consisting of alkali earth metal carbonate, transition metal carbonate, zinc carbonate, cadmium carbonate, indium carbonate, lead carbonate and bismuth carbonate. Specifically, it is preferable to contain the first component including Li2CO3 and the second component including at least one element selected from the group consisting of BaCO3, CaCO3 and SrCO3.

The present invention provides grease which prevents frictional wear on a lubricating surface and excellent in performance of preventing occurrence of flaking, heat-resistant performance, and long-term durability, a grease-enclosed rolling bearing, a constant velocity joint, and rolling parts. Grease is composed of base grease, essentially containing a thickener, to which at least 0.01 to 15 wt % of one substance selected from among bismuth and inorganic bismuth compounds is added. The inorganic bismuth compounds are at least one inorganic bismuth selected from among bismuth sulfate, bismuth trioxide, bismuth carbonate, and sodium bismuthate. The above-described grease is used for the rolling bearing and the constant velocity joint. A coating film of at least one substance selected from among the bismuth and the inorganic bismuth is formed on surfaces of the rolling parts.

The present invention provides a grease capable of preventing wear on a lubricated surface, excellent in deflection prevention performance, heat resistance, and long-term durability, and a rolling bearing, a constant velocity coupling, and a rotating part filled with the grease. The grease is prepared by adding at least one substance selected from bismuth and inorganic bismuth in an amount of 0.01 to 15% by weight relative to the total amount of grease to a base grease prepared by blending at least a thickener with a base oil. Inorganic bismuth is at least one inorganic bismuth selected from bismuth sulfate, bismuth trioxide, bismuth carbonate and sodium bismuthate, the above-mentioned grease is used for rolling bearings and constant velocity couplings, and the rotating parts are formed on their surfaces selected from bismuth and inorganic bismuth A coating of at least one substance.

The present invention discloses a cobalt oxide doped basic bismuth carbonate/bismuth oxychloride photocatalyst, which comprises, by weight, 55-90% of basic bismuth carbonate (Bi2O2CO3) and 10-45% of bismuth oxychloride (BiOCl). The preparation method comprises: (1) adding Bi2O2CO3 to a BiOCl aqueous solution, and carrying out ultrasonic dispersion for 30 min, wherein the mass of the cobalt chloride is 5-30% of the mass of the basic bismuth carbonate; and (2) carrying out heating stirring on the ultrasonic dispersion mixing solution obtained in the step at a temperature of 100 DEG C until the water is completely evaporated, grinding into powder, heating to a temperature of 350 DEG C at a rate of 5 DEG C/min, and calcining for 3 h to obtain the basic bismuth carbonate/bismuth oxychloride photocatalyst. According to the present invention, the method is simple and rapid, can improve the catalytic efficiency of the catalyst, and is suitable for industrial production, and the obtained basic bismuth carbonate/bismuth oxychloride photocatalyst can be widely used in the fields of organic pollutant degradation, photocatalytic decomposition water-to-hydrogen, and the like.

The invention belongs to the technical field of photocatalyst materials for degrading wastewater pollutants and discloses a preparation method of a Bi2O2CO3/PPy/g-C3N4 compound photocatalyst and application of the Bi2O2CO3/PPy/g-C3N4 compound photocatalyst to Rhodamine B degradation under simulated sunlight. The preparation method includes: mixing a polypyrrole (PPy) doped bismuth subcarbonate (Bi2O2CO3) composite material with graphite-phase carbon nitride (g-C3N4) in an organic solvent according to the proportion, performing heating reflux, washing obtained products for several times, and performing vacuum drying to obtain the Bi2O2CO3/PPy/g-C3N4 compound photocatalyst material. The preparation method has the advantages that the preparation method is simple and easy to achieve large-scale industrial production, the prepared compound material is stable in property and high in photocatalytic activity, the spectral response range of Bi2O2CO3 is expanded, sunlight utilization rate is increased, and the prepared compound material has a good degrading effect on organic dye Rhodamine B of certain concentration and is applicable to dye wastewater treatment.

The invention relates to a method for producing high purity superfine bismuth oxide. The method comprises the following steps: a bismuth salt compound, a dispersant, ammonium bicarbonate and a small amount of solvent are subjected to ball milling to obtain bismuth carbonate, and the obtained bismuth carbonate is washed by using deionized water and is mixed evenly with a certain amount of ammonium bicarbonate and is calcined to obtain a target product; the solvent is taken from one of methanol, ethanol or acetone, the bismuth salt compound can be bismuth nitrate pentahydrate or bismuth acetate, and the dispersant can be one of tween, span or emulsifier OP; and the weight ratio of the bismuth in the bismuth salt compound to the dispersant is 1: 0.01-0.1. The bismuth oxide has high purity, low impurity content and good dispersibility and is particularly suitable for the electronic grade industrial ceramic industry.

An object of the present invention is to provide a resin composition which can be detected both by X-ray radiation and by fluorescence or phosphorescence, and a molded article obtained from the resin composition. The present invention provides a resin composition containing a light-emitting substance and a radiopaque substance; in which the light-emitting substance is a near-infrared fluorescent material or a phosphorescent material. a radiopaque substance of the resin composition is any one of barium sulfate, bismuth oxide, bismuth subcarbonate, calcium carbonate, aluminum hydroxide, tungsten, zinc oxide, zirconium oxide, zirconium, titanium, platinum, bismuth subnitrate, and bismuth. A molded article can be obtained by processing any one of the resin compositions described above.

The invention discloses a preparation method of bismuth subcarbonate microflowers. The method comprises the steps that tetrabutyl titanate, bismuth nitrate pentahydrate and water are mixed, so as to obtain suspension liquid, and the molar ratio of bismuth nitrate pentahydrate to tetrabutyl titanate is (11 to 13):(8 to 10); KOH is mixed with the suspension liquid, and then ammonium citrate fluid is dropwise added into the suspension liquid, so as to obtain precursor solution; the KOH concentration in the precursor solution is 0.8 to 1.2 mol/L, the bismuth nitrate pentahydrate concentration is 0.2 to 0.4 mol/L and the ammonium citrate concentration is 0.6 to 0.8 mol/L; the precursor solution is subjected to hydrothermal reaction for 18 to 22 h at 190 to 210 DEG C, and the bismuth subcarbonate microflowers are obtained through after treatment. The bismuth subcarbonate microflowers prepared are formed by staggering two-dimensional nano sheets, the average diameter is 5 to 15 micrometers, and the specific surface area is large. Bismuth subcarbonate has obvious degradation effect on toxic organic pollutants, and has a wide application prospect in terms of environmental management.

The method prepares bismuth subcarbonate from industrial sodium carbonate and industrial bismuth nitrate, and takes modified polyacrylamide-co-styrene-co-acrylic acid copolymer as the absorption material. Heavy metals are removed from the industrial sodium carbonate and industrial bismuth nitrate through absorption. The modified copolymer is prepared through modification of polyacrylamide-co-styrene-co-acrylic acid copolymer raw material with formaldehyde, dimethylamine and optionally selected C2-C4 organic amine containing sulfydryl, the specific reactions are that side chains of the copolymer are induced into hydroxymethyl (-CH2-OH) and aminomethyl (-CH2-N(CH3)2), and are optionally induced or not induced into sulfydryl (-SH) or sulfenyl (-S-). The modified copolymer has a relatively strong absorption ability of heavy metals such as lead, cadmium, mercury, and arsenic.

The invention provides a preparation method of a bismuth subcarbonate nanoribbon. The method comprises the steps that Bi(NO3)3.5H2O serves as the raw material and is added to a mixed solution of ethanolamine and water, and magnetic stirring and ultrasonic treatment are conducted; obtained white suspension is transferred to a hydrothermal reaction kettle for a reaction, after the reaction is completed, cooling is conducted, white precipitate in the reaction kettle is taken out, washed and dried, and the bismuth subcarbonate nanoribbon is obtained. The method has the advantages that devices are simple, the temperature ranging from 120 DEG C to 140 DEG C is low, and environmental protection is achieved due to the fact that the synthesis reaction is conducted in a sealed system; a chemical reagent capable of being decomposed to generate CO2 does not need to be introduced to serve as the raw material, powder is synthesized in one time through a solvent-thermal method, high-temperature calcination is not needed, synthesized powder is high in purity, high in crystallinity and regular in morphology, and the preparation method is simple in technology, high in efficiency, low in energy consumption, low in cost and environmentally friendly.

The present document describes a screening composition comprising a marker compound, chosen from at least one of iodine, and fluorescein; eosin Y, erythrosine, ponceau S, calcein, a catalyst, chosen from at least one boron trioxide (B₂O₃), potassium (K), Gallium (III) oxide (Ga₂O₃), Nickel (II) oxide (NiO), Vanadium (V) oxide (V₂O₅), magnesium oxide (MgO), a bismuth oxide chosen from bismuth subcarbonate [Bi₂O₂(CO₃)], bismuth chloride oxide (BiClO), and bismuth oxide (Bi₂O₃), cesium bromide (CsBr), lanthanum (III) oxide (La₂O₃), molybdenum (VI) oxide (MoO₃), neodymium oxide (Nd₂O₃), Nickel (II) carbonate anhydrous (NiCO₃); and a pigment, chosen from at least one of scandium (III) oxide (Sc₂O₃), Lead (IV) oxide (PbO₂), Sulfur (S) powder, and Tungsten (VI) oxide (WO₃), chromium (III) oxide (Cr₂O₃), copper (II) oxide (CuO), copper (I) oxide (Cu₂O), iron (III) oxide (Fe₂O₃), lead (II) oxide (PbO). The document also describes method of using the same.

The invention discloses a bismuth oxide micro-powder and its preparation method which comprises, charging bismuth nitrate solution containing 100-350g/L of Bi 3+ into ammonium hydrogen carbonate solution with concentration of 10-25 wt%, controlling the weight ratio of charged ammonium and bismuth between 1.5-3.5, producing bismuth carbonate precipitate while agitating at normal temperature, filtering and washing, carrying out thermal treatment for the filter cake at 100-700 deg. C, thus obtaining the bismuth oxide product, dispersing agent 0.1-5 wt% of the ammonium hydrogen carbonate solution can be charged.

The invention discloses a medicine composition for treating the multiple kinds of diarrhea of animals and belongs to the human living need department, the veterinary medicine department, and the technical field of the curative activity of compounds or medicine preparations, divided according to the International Patent Classification (IPC). The invention aims at providing a medicine composition which is free of toxic and side effects, simple to produce, and capable of treating multiple kinds of diarrhea of animals. The medicine composition is composed of a traditional Chinese medicine, namely berberine, a Western medicine, namely bismuth subcarbonate, tannalbin, medicinal carbon and pepsase in an optimized proportioning ratio. The medicine composition is characterized by having a wide antibacterial spectrum, the effects of inhibiting protozoa, improving leukocyte phagocytosis, enhancing a body immune function, converging, relieving diarrhea, detoxicating, enhancing digestion and the like, and the special effect of treating the various diarrhea of animals. According to the novel scheme, the medicine composition disclosed by the invention is wide in applications in the technical field of the curative activity of veterinary medicine preparations. The pharmaceutically acceptable auxiliary materials of the medicine composition disclosed by the invention are medicinal carriers, excipients and other additives for conventional preparations.

The invention discloses a lattice defect-containing difunctional bismuth subcarbonate catalyst and a preparation method thereof. The preparation method comprises that pure-phase bismuth subcarbonate is subjected to vacuum heat treatment to form the lattice defect-containing difunctional bismuth subcarbonate catalyst. The lattice defect-containing difunctional bismuth subcarbonate catalyst has normal-temperature catalysis effects and substantial visible light photocatalysis effects. An experiment result shows that the lattice defect-containing difunctional bismuth subcarbonate catalyst has a NO removal rate of 40-60% at a normal temperature under visible light irradiation. The preparation method has simple processes and obvious effects, effectively improves photocatalysis performances of bismuth subcarbonate and gives normal-temperature catalysis performances for bismuth subcarbonate.

A method for manufacturing low-expansion glass-ceramics by high silicon-iron tailings comprises the step of perparing a low-expansion glass-ceramics batch which comprises the following materials in parts by weight: 40-45 parts of 80-mesh high-silicon iron tailings, 50-55 parts of 100-mesh quartz sand, 10-15 parts of 100-mesh alumina, 10-15 parts of lithium carbonate, 3-6 parts of zinc oxide, 3-6 parts of barium selenate, 2-5 parts of rare-earth cerium oxide powder, 1-4 parts of lithium zirconate, 2-5 parts of boron nitride, 3-6 parts of praseodymium chloride, 0.2-0.5 part of beryllia, 0.5-0.9 part of bismuth subcarbonate and 0.1-0.4 part of sodium antimonate. The invention aims to provide the method for manufacturing low-expansion glass-ceramics by high silicon-iron tailings, the method can reduce environmental pollution and lower manufacturing cost, and the obtained glass-ceramics is low in thermal expansion coefficient, high in thermal stability and softening temperature and very good in thermal shock resistance.

The invention discloses a photocatalyst for treating dye in high-salt wastewater and a preparation method of the photocatalyst and belongs to the field of photocatalysis. The photocatalyst uses porousgraphite phase nitrogen carbide nanosheets as the supporter to support bismuth subcarbonate nano particles. The photocatalyst can catalytically treat the dye in the high-salt wastewater under visiblelight, can respond under the visible light and is low in cost and high in degradation rate. The preparation method has the advantages that graphite phase nitrogen carbide and bismuth nitrate are directly subjected to grinding and calcining, so that the bismuth subcarbonate particles are generated on the surface of the nitrogen carbide supporter in an in-situ manner, and the catalytic reaction stability of the photocatalyst is increased by the intense interaction force between the bismuth subcarbonate particles and the nitrogen carbide supporter; in addition, no organic solvents are introducedin the preparation process, so that the preparation method is simple in process and beneficial to industrial production.

The invention relates to a preparation method, products, and applications of a bismuth carbonate oxide nano-material. The bismuth carbonate oxide nano-material is capable of realizing specific enrichment in tumor, so that tumor CT imaging and treatment can be realized; and the bismuth carbonate oxide nano-material can be excreted to the outside of the body through the kidney, so that the biosecurity is high.

The invention relates to the technical field of ceramic materials, and discloses a porous silicon carbide ceramic, which comprises the following raw materials: a main material, a dispersant, a binderand deionized water. The main material comprises the following components in parts by weight: 80-90 parts of silicon carbide, 1-5 parts of a sintering aid, 4-10 parts of a pore-forming agent and 5-10parts of an additive; wherein the sintering aid is potassium oxide, the pore-forming agent is a mixture of ammonium perchlorate and bismuth subcarbonate, and the additive is a mixture of calcium oxideand titanium dioxide. The porous silicon carbide ceramic provided by the invention not only has lower sintering temperature, but also has higher porosity and better bending strength, so that the preparation of the porous silicon carbide ceramic with excellent performance is realized, and the energy consumption is reduced.

The invention discloses a reagent for detecting the content of polyethylene glycol in an electroplating acidic copper solution and a detection method, and belongs to the technical field of organic matter detection. The reagent comprises the following components: 0.1-2.0 g of bismuth subcarbonate, 5-30 mL of glacial acetic acid (hydrochloric acid having a concentration of 5-20% or nitric acid having a concentration of 0.2-2 mol/L), and 2-30 mL of potassium iodide having a concentration of 0.1-1.0 mol/L. The detection method comprises the following steps: preparation of the reagent, preparationof a standard electroplating solution, preparation of a sample, color development operation, absorbance determination and linear analysis, and detection application. According to the method, the conditions for inhibiting hydrolysis of the bismuth subcarbonate and reaction products of the bismuth subcarbonate are determined, interference of other factors is eliminated, the content of the polyethylene glycol in the acidic sulfate copper electroplating solution can be accurately determined, and the method is easy, convenient and rapid to operate, good in repeatability and high in accuracy. The relative standard deviation is less than 5%, the lowest detection line is 1 ppm, and the linear correlation is 0.9965.