67 results about "Bismuth hydroxide" patented technology

This invention provides an electrodeposition paint comprising particles of at least one metallic compound selected from bismuth hydroxide, zirconium compound and tungsten compound, said particles of the metallic compound having an average particle diameter of 1-1,000 nm. The electrodeposition paint forms coating film excelling in corrosion resistance, finished appearance, paint stability and so on.

The invention relates to a method for removing chlorine in manganese electrolyte or zinc electrolyte. The method comprises the steps of: adding a certain quantity of bismuth (III)-containing antichlor into chloridion-containing manganese electrolyte or chloridion-containing zinc electrolyte by means of continuous stirring; adjusting the pH value of the solution at 1.0-5.0, so that the trivalent bismuth ions are hydrolyzed to generate insoluble bismuth oxychloride precipitate on the premise of chloridion; filtering, wherein the filter liquor is used for the follow-up electrolysis production technology; and regenerating filter residue bismuth oxychloride precipitate by an alkaline solution to generate bismuth hydroxide for recycling, and timely adding a small quantity of antichlor in the process of recycling to compensate the loss in the process of regeneration.

The invention discloses a cathode electrode composite material, which comprises a plurality of ferriferous oxide particles and a conductive aid which is selected from copper, cobalt, nickel, tin, antimony, bismuth, indium, silver, gold, lead, cadmium, carbon black, graphite, cupric salt, cobalt salt, nickel salt, tin salt, antimonic salt, bismuth salt, indium salt, silver salt, gold salt, lead salt, cadmium salt, cupric hydroxide, cobalt hydroxide, nickel hydroxide, tin hydroxide, stibine hydroxide, bismuth hydroxide, indium hydroxide, silver hydroxide, gold hydroxide, lead hydroxide, cadmium hydroxide and a group consisting of the combinations. When applied to an electrochemical device, the cathode electrode composite material can show high charging and discharging characteristics and high electric capacity. Moreover, the invention provides a preparation method of the cathode electrode composite material and an electrochemical device applying the same.

The invention relates to method for establishing a photo-Fenton system for tetracycline degradation based on a composite bismuth ferrite material. The method specifically comprises the following steps that 1, bismuth nitrate and ferric chloride are added to a nitrate solution, stirring is performed achieve dissolution, then a sodium hydroxide solution A is dropwise added, a pH value is regulated to be 9-10, and a mixed reaction solution is prepared; 2, graphite oxide is added to the mixed reaction solution, and ultrasonic operation is performed to obtain the co-precipitate of iron hydroxide, hydroxide bismuth and graphene; 3, the co-precipitate is centrifugally cleaned with pure water for several times, then a sodium hydroxide solution B is added to the co-precipitate to make the co-precipitate completely dissolved, and the co-precipitate is transferred to a hot water kettle for hydrothermal reaction; 4, the composite material is put in the Fenton system for tetracycline wastewater degradation. Compared with the prior art, the preparation method is simple, the controllability is good, the pollutant degradation efficiency is high, meanwhile the material stability is good, and the method can be repeatedly adopted, is low in cost and has a very good application prospect.

The invention relates to a method for manufacturing a high-temperature resistant transparent electric heating film. The method comprises the following steps of: preparing a surface modification solution; purifying a substrate; carrying out surface modification; manufacturing an electrode; and carrying out an electrifying and aging procedure. The method is characterized in that the surface medication solution comprises the following components: 300-500g of stannic chloride as a main material, 3-5g of ruthenium trichloride, 4-7g of bismuth hydroxide as a high-temperature resistance stabilizer, 4-7g of barium titanate as a high-voltage resistance stabilizer, 2-4g of fluoboric acid as a doping agent, a proper quantity of hydrofluoric acid as a doping cosolvent, a proper quantity of hydrochloric acid as a cosolvent and 300-500g of absolute alcohol as a solvent. The method has the advantages of high temperature resistance, antioxidation, dry burning in air, wide using temperature range, long service life, slow attenuation and wide application. The method is suitable for manufacturing a high-temperature resistant transparent electric heating film.

The invention discloses a powdery eye shadow block comprising the following materials in parts by weight: 50-60 parts of kaolin, 10-20 parts of ultramarine, 3-5 parts of titanium dioxide, 15-25 parts of bismuth hydroxide, 2-5 parts of beeswax, 4-8 parts of isopropyl palmitate, 0.5-1 part of glycerin monostearate and 0.3-0.6 part of essence. Compared with the prior art, the invention has good gloss and easy inunction without irritation on skin and eyes and any other side effect, can not be afraid of being soaked by rainwater, tears and sweats and has proper drying property.

The invention discloses a preparation method of bismuth hydroxide; the preparation method comprises the following steps of: firstly, confecting bismuth nitrate Bi(NO3)3 solution, ammonia water solution and dispersing agent solution; then adding the dispersing agent solution into the bismuth nitrate Bi(NO3)3 solution, stirring, adding water to dilute the bismuth nitrate Bi(NO3)3 solution, adding ammonia water solution to adjust the pH (potential of hydrogen) of the bismuth nitrate Bi(NO3)3 solution, stirring, filtering, depositing and washing pre-precipitating at the end of the reaction; confecting the washed pre-precipitate to be suspension, keeping on adding ammonia water solution to adjust the pH, stirring; sanding and ageing after the reaction, washing, separating and drying bismuth nitrate Bi(NO3)3 precipitate after ageing, so as to obtain dry bismuth hydroxide Bi(OH)3 powder, carrying out fluid energy milling on the dry powder, thus obtaining the bismuth hydroxide Bi(OH)3 product. The bismuth hydroxide prepared by the method is low in impurity content and is excellent in catalyzing property.

An electrocoat coating composition contaminated with phosphate ions is treated by adding zirconium silicate to the coating composition. Aqueous electrocoat coating compositions including (1) a bismuth compound and that is free of tin compounds and free of bismuth hydroxide or (2) having a catalyst consisting essentially of a member selected from the group consisting of bismuth compounds and mixtures of these also include zirconium silicate.

The invention discloses an aqueous dispersion system used for etching a polysilicon wafer. The aqueous dispersion system comprises the following components based on the total weight of the aqueous dispersion system: an aqueous medium as well as 0.0001-0.5 mol/L bismuth hydroxide and 1-5000 ppm at least one anionic or nonionic surfactant which are dispersed in the aqueous medium. The invention also discloses a method for etching the polysilicon wafer by utilizing the aqueous dispersion system and a solar polysilicon wafer cell obtained by using the method.

The invention discloses a method for producing high-purity bismuth oxide from bismuth-containing materials. The method includes the steps that firstly, a bismuth-containing material and a hydrochloricacid solution are subjected to a leaching reaction, so that bismuth in the bismuth-containing materials enter the solution in a bismuth chloride form, and leachate and leaching residues are separated; secondly, pure water is added into the leachate, and a hydrolysis reaction is carried out on the bismuth chloride to precipitate bismuth oxychloride; thirdly, the precipitated bismuth oxychloride isseparated out, a dilute alkali solution is added, and the bismuth oxychloride is converted into bismuth hydroxide under the condition of low-temperature dilute alkali; fourthly, a concentrated alkalisolution is added into the filtered bismuth hydroxide, and the bismuth hydroxide is converted into bismuth oxide by using high-temperature concentrated alkali; finally, the generated bismuth oxide iswashed, dried and screened to obtain the high-purity bismuth oxide. According to the method, the bismuth-containing materials serve as the raw materials, so that bismuth enters the solution in the bismuth chloride form and then is hydrolyzed into bismuth oxychloride, and bismuth oxide is generated through low-temperature dilute alkali conversion and high-temperature concentrated alkali conversion. The method is simple in procedure, the consumption of reagents is small, and impurities such as Fe, Pb, Sb and As can be deeply purified and separated.

The invention discloses a preparation method of a high-purity colloidal bismuth pectin compound, confirmation of a chemical structural formula, a molecular formula and the molecular weight thereof, and an application technology. The compound is different from a compound prepared by a colloidal bismuth pectin preparation method (patent) disclosed and implemented previously. According to the original patent process, due to reasons of raw materials in an intermediate liquid pectin and a bismuth salt solution for the production of colloidal bismuth pectin and the preparation method thereof, the product contains lots of organic impurities (sorbitol, pectin, etc.) and inorganic impurities (nitrate and bismuth hydroxide), purity of the product is low (only 80%), quality standard level is low, and curative effect is poor. The invention provides several preparation methods for preparation of a high-purity (98%) colloidal bismuth pectin compound, including five optimization methods. Through spectrometry and analysis, the structural formula, the molecular formula and the molecular weight of the compound are determined. A novel medicinal preparation prepared from the high-purity compound has obvious clinical advantages.

The invention discloses a preparation method of a graphene oxide-based catalytic material. The preparation method comprises the following steps: (1) adding deionized water and polyethylene glycol into graphene oxide, stirring the mixture, and ball-milling the same for 10-15min to obtain paste graphene oxide; (2) mixing the paste graphene oxide with bismuth nitrate pentahydrate in a weight ratio of 1: (1-3), ball-milling the mixture for 2-10h, adding a sodium hydroxide solution to adjust the pH value to 9-10, leaving the mixture to stand, filtering the same, collecting a precipitate and washing the precipitate, and drying the precipitate to obtain a graphene oxide-bismuth hydroxide compound; and (3) calcining the graphene oxide-bismuth hydroxide compound for 1-2h at 300-600 DEG C in a nitrogen atmosphere to obtain the graphene oxide-bismuth trioxide catalytic material. According to the graphene oxide-based catalytic material disclosed by the invention, bismuth trioxide can be uniformly dispersed on the surface of graphene oxide, so that the graphene oxide-based catalytic material has relatively good photocatalytic activity.

The invention discloses a preparation method of aramid paper, comprising the following steps: 30-70 wt% of aramid fibrid containing an anti-oxidant (which is an oxide of bismuth or bismuth hydroxide)and 30-70 wt% of aramid chopped fiber are mixed for papermaking to form raw paper; then, the obtained raw paper undergoes hot-pressing treatment, wherein one of two pressure rollers is a soft roller and the other one of the two pressure rollers is a hot-hard roller; as for heat treatment, a high-temperature negative-pressure vacuum-pumping calendering technology is adopted for calendaring of the raw paper, wherein there are many round bulges on the surface of the soft roller. With the addition of the anti-oxidant, the paper is avoided from being oxidized and yellowed during the papermaking process. With the addition of the chopped fiber, dispersion of fiber in water can be enhanced, and some slightly large gaps in the paper can be filled up during the papermaking process. In the hot-pressing process, extrusion of the small bulges on the surface of the soft roller is beneficial to discharge of water vapor inside the paper.

The present invention relates to a glass-ceramic containing a bismuth germanate crystal phase, and a preparation method thereof, wherein the microcrystalline phase of the glass-ceramic is bismuth germanate, and the preparation raw materials of the glass-ceramic comprise bismuth trioxide, germanium dioxide and bismuth hydroxide according to a molar ratio of 10-40:60-90:3-10. The specific preparation method comprises: (1) preparing raw materials according to a certain ratio, and grinding the raw materials; (2) mixing the grinded raw materials, and carrying out high temperature melting to preparea glass; and (3) annealing the prepared glass, and cooling to obtain the glass-ceramic containing the bismuth germanate crystal phase. According to the present invention, the scintillating glass-ceramic material has the light-emitting property similar to the crystal material with the full width at half maximum of about 200 nm, has good processability so as to be widely used in ray detection, further has advantages of excellent glass material performance, stable size, simple preparation process, designable performance and low production cost, and can be welded to metals.

A primer composition that includes stabilized, encapsulated red phosphorus, at least one oxidizer, at least one secondary explosive composition, at least one light metal, and at least one acid resistant binder. The stabilized, encapsulated red phosphorus may include particles of red phosphorus, a metal oxide coating, and a polymer layer. The metal oxide coating may be a coating of aluminum hydroxide, bismuth hydroxide, cadmium hydroxide, cerium hydroxide, chromium hydroxide, germanium hydroxide, magnesium hydroxide, manganese hydroxide, niobium hydroxide, silicon hydroxide, tin hydroxide, titanium hydroxide, zinc hydroxide, zirconium hydroxide, or mixtures thereof. The polymer layer may be a layer of epoxy resin, melamine resin, phenol formaldehyde resin, polyurethane resin, or mixtures thereof. A percussion cap primer that includes the primer composition, a tertiary explosive composition, and a cup is also disclosed, as are ordnance devices including the primer composition.