45 results about "Bismuth subcarbonate" 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.

The invention relates to a method for preparing a bismuth-series chemical product, comprising steps as follows: firstly, preparing ordinary-level bismuth oxide by refined bismuth; then preparing a bismuth-series chemical product by the ordinary-level bismuth oxide including steps of refined bismuth pulverization, bismuth low-temperature oxidation, ordinary bismuth oxide chemical conversion, and the like; finally preparing bismuth-series chemical products of bismuth nitrate, bismuth subnitrate, bismuth subcarbonate, bismuthsalicylate, basic bismuth salicylate, bismuth citrate, bismuth trichlor, bismuth oxychloride, electric bismuth oxide or bismuth oxide nanowire, and the like; and recycling chemically-converted mother-liquid. The invention has the advantages of generating no cancerigenic poison gas NOx and waste water, having environment protection, little consumption of chemical reagent, little energy consumption, low cost, simple device and operation, 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 gold-supported bismuth subcarbonate material for photocatalysis and a preparation method thereof, and belongs to the field of inorganic nano-materials. The preparation method of gold-supported bismuth subcarbonate microspheres comprises the steps that firstly, ammonium bismuth citrate and sodium carbonate are added in water and stirred to obtain an even supernatant solution; secondly, the solution is placed in a hydrothermal reaction kettle for a hydrothermal reaction at 160 DEG C for 24 h; thirdly, precipitate obtained through the reaction is centrifuged, washed and dried to obtain bismuth subcarbonate nanospheres. The gold supporting method comprises the steps that the prepared bismuth subcarbonate reacts with urea, chloroauric acid and water on the water bath condition at 80 DEG C for 4 h, washing and drying are performed after natural cooling is performed, and then the gold-supported bismuth subcarbonate nanospheres are obtained. According to the prepared gold-supported bismuth subcarbonate nanospheres, the physical phase is orthorhombic-phase bismuth subcarbonate of which the JCPDS number is 84-1752, the nanospheres are in the shape of a sphere, the diameter is 2-5 micrometers, and the size of gold particles on the surfaces is 5-10 nm.

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 invention discloses a method used for preparing subsize bismuth subcarbonate crystal sheets via hydrothermal method. The method comprises following steps: a bismuth salt and a carbonate/bicarbonate are dissolved in water at a certain ratio so as to obtain bismuth subcarbonate crystal nucleus, wherein a template can be added optionally; an obtained mixture is delivered into a hydrothermal reaction vessel, and is reacted for a certain period of time at a certain temperature so as to obtain bismuth subcarbonate crystal sheets; the bismuth subcarbonate crystal sheets are cooled, and are subjected to impurity removing and drying so as to obtain powdery high-purity size-controllable bismuth subcarbonate crystal sheets. The process flow is simple; cost is relatively low; nano-grade and micron-grade bismuth subcarbonate crystals with different size and morphology can be prepared via controlling reaction temperature and time; the method possesses commercial exploitation value; the prepared bismuth subcarbonate can be applied to the field of medicine, or can be taken as a photocatalyst in organic pollutant degradation, and can also be taken as an analysis reagent, a pearlescent plastic additive, a cosmetic adhesive agent, and an enamel fluxing agent.

The invention discloses high-performance ceramic and a preparation method thereof. The high-performance ceramic is prepared from raw materials in parts by weight as follows: 6-8 parts of zinc oxide, 30-40 parts of high-potassium sand, 3-5 parts of ultrafine molybdenum powder, 1-2 parts of cobalt sulfide, 40-60 parts of hauynite, 1-3 parts of sodium bicarbonate, 3-5 parts of tungsten diselenide, 8-15 parts of Suzhou clay, 0.5-1 part of tartaric acid, 1-2 parts of bismuth subcarbonate, 3-5 parts of tin antimony oxide, 4-6 parts of carboxymethylcellulose, 1-3 parts of nano magnesium titanate, 1-2 parts of polyethylene wax, 6-7 parts of a reinforcing agent and a proper amount of absolute ethyl alcohol. The ceramic is low in production cost, excellent in comprehensive performance, high in strength and good in chemical stability; components such as the hauynite, the ultrafine molybdenum powder and the like are added, so that the ceramic is good in fire resistance and low in thermal expansion rate; components such as the tungsten diselenide, tin antimony oxide, the nano magnesium titanate and the like are added, thus, the strength and the fire resistance of the ceramic are further enhanced, and the ceramic has the reliable safety during usage.

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 provides an epoxy resin compound for sealing a semiconductor and a semiconductor device, wherein the plating adhesiveness of CuLF with Ag is excellent even stored for a long time at a high temperature of 175-250 DEG C. Meanwhile, no Cu line, Cu line/AL cushion or broken line exists, and the corrosion reliability is excellent. The epoxy resin compound for sealing the semiconductor is characterized by comprising the following parts as essential ingredients: (A) epoxy resin, (B) curing agent, (C) inorganic filling agent, (D) potassium oxide/ bismuth subcarbonate, and (E) phosphazene, wherein the compound does not contain bromide, red phosphorous, phosphoric acid ester and antimony compounds basically.

The invention discloses an environment-friendly compound fertilizer with a soil restoration function and a preparation method of the environment-friendly compound fertilizer. The environment-friendly compound fertilizer with the soil restoration function comprises fish scale powder, polyacrylamide, starch xanthate, crab shell powder, plant polysaccharides, polyaspartic acid, hydrolysable tannin, river sand micro-powder, sodium selenate, tartaric acid, bismuth subcarbonate, montmorillonoid, volcanic ash, chitin, glycerin monostearate, vermiculite powder, bamboo charcoal powder and diammonium phosphate. The environment-friendly compound fertilizer with the soil restoration function can effectively remove heavy metals such as nickel and cadmium in soil, the soil is restored and improved, soil quality is improved, soil pollution is avoided, the burden of the soil is reduced, fertilizing amount is small, raw materials are non-toxic, and the compound fertilizer is more environmentally friendly.

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 provides a nickel manganese double-metal hydroxide composite material. The nickel manganese double-metal hydroxide composite material comprises bismuth subcarbonate and nickel manganese double-metal hydroxide loaded on the surface of bismuth subcarbonate. Compared with the prior art, the nickel manganese double-metal hydroxide composite material adopts bismuth subcarbonate as a carrier, the surface of bismuth subcarbonate is loaded with nickel manganese double-metal hydroxide, and bismuth subcarbonate is adopted as a substrate for nickel manganese double-metal hydroxide to grow, and can guide and control the shape and structure of nickel manganese double-metal hydroxide; moreover, tight connection of bismuth subcarbonate and nickel manganese double-metal hydroxide can more fully and more quickly provide an ion channel for an redox reaction; under the joint action of bismuth subcarbonate and nickel manganese double-metal hydroxide, the obtained composite material can simultaneously have good electrochemical performance and photocatalytic performance. The invention further provides an electrode material and a photocatalyst.

The invention discloses a preparation method of a bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material, which comprises the following steps: (1) adding urea into deionized water, stirring and dissolving, then adding Bi (NO3) 3.5 H2O, continuously stirring, and then adding sodium sulfide to obtain a mixed solution; and (2) stirring the mixed solution, then carrying out a closed reaction, after the reaction is completed, naturally cooling to room temperature, and carrying out centrifugation, water washing, alcohol washing and drying at room temperature on a product to obtain the bismuth subcarbonate-bismuth sulfide heterostructure photocatalytic material. The preparation method can effectively solve the problem of insufficient response to ultraviolet light when bismuthyl carbonate is used as a photocatalytic material, and compared with other bismuthyl carbonate-bismuth sulfide heterojunctions, the preparation method is simple, the cost is low, and large-scale production is easy.

The present invention is an industrially advantageous method for producing a bismuth iron oxide which is represented by BiFeO3 and which has a low amount of impurities. The method for producing the bismuth iron oxide is characterized by comprising: a wet pulverization step for obtaining pulverized and mixed raw material powder by wet-pulverizing and mixing, in the presence of a medium and an aqueous dispersion medium, bismuth subcarbonate powder and iron compound powder; and a firing step for obtaining a bismuth iron oxide represented by BiFeO3 by firing, as a raw material to be fired, the pulverized and mixed raw material powder at 450-700 DEG C.

The invention relates to a medicine for treating gastropathy, which is characterized in that the medicine contains the following components in parts by weight: 10.5-33.7 parts of elecampane, 10.5-33.7 parts of chicken gizzard membrane, 10.5-33.7 parts of Fructus piperis Longi, 10.5-33.7 parts of Fructus evodiae, 10.5-33.7 parts of lesser galangal, 7.0-22.5 parts of cassia bark, 25-80 parts of bismuth subcarbonate, 15.2-48.5 parts of sodium bicarbonate and 180.5-400.3 parts of starch. Elecampane, chicken gizzard membrane, Fructus piperis Longi, Fructus evodiae, lesser galangal and cassia bark are taken according to the parts by weight and are crushed into fine powder, and then bismuth subcarbonate, sodium bicarbonate and starch are added according to the parts by weight and are evenly mixed to obtain. The medicine can obviously and rapidly relieve epigastric pain, can gradually heal ulcers and causes no relapse after the medicine is stopped being taken. The medicine has good effect on especially ulcers and stomachache caused by deficient cold of spleen and stomach, and the effectiveness reaches 84 percent.

The invention provides subcutaneous positioning liquid, which is mainly prepared by the following raw materials in parts by weight: 18-42 parts of chromophore, 12-25 parts of bioactive glass, 5-8 parts of alcohol, 5-8 parts of glycerol, 4-10 parts of polyamide resin, 1-5 parts of polyvinyl alcohol, 1-5 parts of bismuth subcarbonate, 0.5-2 parts of isoindolinone, 0.3-0.5 part of methylcellulose, 0.1-0.8 part of sodium carboxymethyl starch and 22-75 parts of a diluent. The subcutaneous positioning liquid provided by the invention is easy to color, intensive in color and capable of avoiding easygeneration of color spots; appearance of the subcutaneous positioning liquid is not affected; the subcutaneous positioning liquid, instead of fading within a short time, automatically and gradually fading after 3-6 months; and the subcutaneous positioning liquid is low in cost and is convenient and rapid to prepare.

The invention relates to a powder explosion suppressant for suppressing titanium powder explosion and a preparation method of the powder explosion suppressant, and belongs to the technical field of explosion suppressants. The powder explosion suppressant for suppressing titanium powder explosion is composed of a plurality of powder materials, and the powder explosion suppressant comprises the following components in percentage by weight: 13.2%-26.5% of ammonium dihydrogen phosphate, 17.4%-30.9% of sodium pyrophosphate decahydrate, 15.3%-28.2% of bismuth subcarbonate, 10.6%-23.7% of stannous chloride, 3.9%-8.6% of sodium methyl silicate and 5.8%-10.2% of sodium hexametaphosphate. According to the powder explosion suppressant for inhibiting the titanium powder explosion, all the components are matched according to a special proportion, so that the powder explosion suppressant has a very good synergistic explosion suppression effect, and the powder explosion suppressant for suppressing the titanium powder explosion further has the advantages of being good in explosion suppression performance, small in dosage, easy to prepare and the like; The powder explosion suppressant for suppressing the explosion of the titanium powder is particularly suitable for an explosive region of the titanium powder, and the explosion risk is reduced.

The invention discloses a photocatalyst for treating dye in high-salinity wastewater, and a preparation method thereof, and belongs to the field of photocatalysis. The photocatalyst disclosed by the invention takes a porous graphite phase nitrogen carbide nanosheet as a carrier, and bismuth subcarbonate nanoparticles are loaded on the porous graphite phase nitrogen carbide nanosheet carrier. The obtained catalyst can catalyze and treat the dye in high-salinity wastewater under visible light, and has the advantages of response under visible light, low cost and high degradation rate. In the preparation process of the catalyst, graphite-phase nitrogen carbide subjected to hydrothermal treatment and bismuth nitrate are directly ground and roasted to make bismuth oxycarbonate particles generated on the surface of the nitrogen carbide carrier in situ, and the catalytic reaction stability of the photocatalyst is improved by utilizing the strong interaction force of the graphite-phase nitrogencarbide and the bismuth nitrate. In addition, no organic solvent is introduced in the preparation process, so environmental protection is achieved, the process is simple, and industrial production isfacilitated.