1125 results about "Tetrachloride" patented technology

A method for forming a forming a silicon germanium tin (SiGeSn) layer is disclosed. The method may include, providing a substrate within a reaction chamber, exposing the substrate to a pre-deposition precursor pulse, which comprises tin tetrachloride (SnCl₄), exposing the substrate to a deposition precursor gas mixture comprising a hydrogenated silicon source, germane (GeH₄), and tin tetrachloride (SnCl₄), and depositing the silicon germanium tin (SiGeSn) layer over a surface of the substrate. Semiconductor device structures including a silicon germanium tin (SiGeSn) layer formed by the methods of the disclosure are also provided.

The invention relates to a manganese-based low-temperature denitration catalyst and a preparation method thereof. The preparation method comprises the following steps of: 1, dissolving manganous nitrate, ferric nitrate, crystal tin tetrachloride and cerous nitrate in water at normal temperature, and stirring the mixture to form transparent solution; 2, preparing solution of ammonium carbonate, dripping the solution of ammonium carbonate into the solution prepared by the step 1, and heating and stirring the mixture to obtain slurry; 3, ultrasonically immersing the slurry, leaching the slurry to obtain a filter cake, and then washing the filter cake with deionized water; and 4, drying and roasting the filter cake to obtain the manganese-based low-temperature denitration catalyst MnFeSnCeOx, wherein the molar ratio of Mn: Fe: Sn: Ce in the prepared catalyst is equal to (35-39):(2-5):(9-35):(54-21). The purification efficiency of nitric oxides reaches 71 to 100 percent when the metallic oxide catalyst is at the temperature of between 80 and 250 DEG C. The composite oxide catalyst has high sulfur resistance.

The electrostatic spinning process for preparing low density porous nanometer SnO2 fiber as laser target material is fast, efficient and simple. The electrostatic spinning process includes compound spinning solution with polyvinyl pyrrolidone, absolute ethyl alcohol, tin tetrachloride in certain weight proportion through mixing at room temperature; electrostatic spinning through spraying the spinning solution with spinning jet to an accepting screen 5-30 cm apart from the jet while applying electric field of 0.1-1 kv/cm, controlling the spraying time and the motion of the accepting screen to obtain fiber of different density and deposited in different areas; and roasting at 450-550 deg.c to obtain the nanometer SnO2 fiber.

The present invention discloses the synthesis of composite functional super high cross-linked adsorbing resin containing sulfo radical. The synthesis process of the present invention adopts styrene as monomer, divinyl benzene as cross-liking agent, liquid paraffin and other material as pore creating agent, magnesium sulfate and other material as dispersant, benzoyl peroxide as initiator, nitrobenzene and dichloro ethane or chloroben as sweller, and zinc chloride, ferric trichloride or tin tetrachloride and Lewis acid as catalyst, and prepares composite functional resin through preparing chloromethylated low cross-linked polystyrene resin, post-crosslinking reaction to obtain composite functional resin precursor of different crosslinking degree and final sulfonating with high concentration sulfuric acid to obtain composite functional resin with different specific surface area and different exchange capacity. The resin product has both adsorption and ion exchange function and thus wide application range.

The invention discloses a super high cross-linking adsorption resin with quaternary amines base composite function and making method, which comprises the following steps: utilizing phenylethene as monomer, diphenyl ethylene as cross linking agent, liquid wax as hole-sealing agent, magnesium carbonate as disperser, benzoyl peroxide as initiator; adopting nitrobenzene, substituted nitrobenzene, dichloroethanes or orthodichlorobenzene as swelling agent in the cross-linking reaction course of chloromethylation low cross-linking large-hole polyphenylacetylene; using zinc chloride, ferric chloride or tin tetrachloride as catalyst to produce different cross linking composite functional resin priority in the preset time and temperature condition; adding trimethylamine to aminate to produce the product. The resin possesses double functions of adsorption and ion exchanging, which can be applied in drug separation, little polluted water source and organic chemical waste water harnessing.

The invention provides a preparation method of a graphene-modified doped tin oxide composite material, which comprises the following steps: a) dispersing graphite oxide containing hydroxy group, carboxyl group or epoxy group in water, adding tin tetrachloride or crystalline tin tetrachloride and an alcoholic solution of dopant, and adding ammonia water and a reducer to react until a precipitate comes out; and b) filtering out the precipitate, drying, and sintering under inert gas shielding to obtain the graphene-modified doped tin oxide composite material. The invention also provides a gas sensor prepared from the composite material. By introducing the graphene to modify the doped tin oxide, the graphene-modified doped tin oxide composite material has large specific area and uniform nano particle size, and the preparation method is simple and easy to implement; and compared with the doped tin oxide gas sensor, the gas sensor prepared from the composite material provided by the invention has high gas sensitivity, and is suitable for monitoring atmospheric environment and pit gas leakage.

The invention discloses an adsorption-photocatalysis composite material synthesized on basis of in-situ synchronous assembly of UIO-66-NH2 and graphene (GR). The composite material is prepared by following steps: (1), weighing a certain amount of GR, dissolving the same in N, N-dimethyl formamide prepared in advance, and performing ultrasonic treatment to enable GR to be dissolved in a solution to obtain a solution A; (2), weighing a certain amount of 2-amino-terephthalic acid, dissolving the same in the solution A, ultrasonically treating, and stirring to obtain a solution B; (3), weighing a certain amount of a precursor, zirconium tetrachloride used for synthesizing MOF, dissolving the precursor in the solution B, ultrasonically treating, and stirring to obtain a solution C; (4), putting the solution C in microwaves for reaction for a period of time to obtain a product; (5), centrifuging and washing the product to obtain the composite material of UIO-66-NH2 and GR.

The preparation process of functional polyolefin resin includes electronic beam or gamma-ray pre-irradiation treatment of functional polyolefin resin; mechanical mixing of polyolefin resin after pre-treatment, functional monomer and electron donor reagent; and reacting extrusion for the polyolefin resin in molten state and functional monomer to produce grafting reaction. The polyolefin resin includes polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-styrene copolymer, polystyrene, etc; the functional monomer is unsaturated organic acid or its derivative with amino group, isocyanate, hydroxyl group or other reactive functional group; and the electron donor reagent includes electron-rich compound with P, N, S or O element, p-benzoquinone, triphenyl phosphite, triphenyl phosphate, etc.

The invention discloses a method for efficiently recycling tin from a waste tin-stripping solution based on a tin-stripping solution of a hydrochloric acid-tin salt system. According to the tin-stripping solution, the components and the contents are as follows: 110-230g/L of tin tetrachloride, 70-220g/L of hydrochloric acid, 10-30g/L of iron chloride, 0.5-2.5g/L of a stabilizing agent, 5-30g/L of an accelerant and 2-5g/L of a brightener. The waste tin-stripping solution obtained by tin stripping is subjected to diaphragm electrodeposition treatment by using a cathode room and an anode room of an anion diaphragm electrolytic cell to recycle tin, the tin tetrachloride and ferric trichloride. According to the method for treating the waste tin-stripping solution, not only can the tin be effectively recycled from the waste tin-stripping solution, but also the tin tetrachloride and ferric trichloride can be regenerated and returned to prepare the waste tin-stripping solution to use; the problems of resource wastes, serious environment pollution and the like of a traditional waste tin-stripping solution treatment method are completely avoided.

The invention provides a composite rear earth pyrochlore-type oxide catalyst for catalyzing burning for removing soot of a diesel vehicle and a preparation method thereof, belonging to the technical field of a tail gas cleaning catalyst of the diesel vehicle. The expression formula of the composite metal oxide is A2B2-xMxO7, wherein A is La, B is Sn, M is Mn, Fe, Co, Ni or Cu. The invention adopts a coprecipitation method to prepare the catalyst, the preparation process is simple, and the cost is low. The preparation method comprises the following steps: mixing metal nitrate and tin tetrachloride solution; adjusting the pH value by ammonia solution; drying the obtained deposit; and roasting the deposit at the high temperature to obtain the composite rear earth pyrochlore-type oxide catalyst. Under the effect of the catalyst, a simulation diesel vehicle exhausts, the burning temperature of the soot particles is lowered to the exhaust range of the diesel vehicle, and the speed of the soot oxidation rate is improved. The catalyst is a useful catalyst for removing the pollution of soot particles of the diesel vehicle.

The invention relates to the technical field of preparation of nonferrous metal, in particular to a method for preparing titanium sponge through magnesium and chlorine recycling. The method comprises the following steps of: crushing natural rutile or titanium-rich slag, finely grinding to -0.25mm and chlorinating to obtain rough titanium tetrachloride; removing iron from the rough titanium tetrachloride by using a distillation tower with bottom temperature of between 140 DEG C and 145 DEG C and top temperature of 137 DEG C; removing silicon through a rectification tower with bottom temperature of 140 DEG C and top temperature of between 57 DEG C and 70 DEG C; removing vanadium by using copper wires to obtain a titanium tetrachloride product with purity of more than 99 percent; proportioning refined titanium tetrachloride and metal magnesium according to a mass ratio of magnesium to titanium as (1.3:1)-(1.8:1) and reacting at the temperature of between 700 DEG C and 1,000 DEG C to obtain mixture of the titanium sponge, the magnesium chloride and the silicon tetrachloride; and distilling the mixture of the titanium sponge, the magnesium chloride and the silicon tetrachloride for 30-35 hours under the conditions of temperature of between 880 DEG C and 1,000 DEG C and final vacuum degree of less than 0.1Pa to separate the titanium sponge and the magnesium chloride.

The present invention relates to new material, and is one kind of carbon fiber reinforced friction resistance material suitable for producing automobile and train brake disc and its preparation process. The carbon fiber reinforced friction resistance material is produced with reinforcing fiber, base resin and friction performance regulator, the reinforcing fiber is the mixture of carbon fiber, metal fiber and inorganic mineral fiber; the base resin is water latex modified phenolic resin; and the friction performance regulator consists of at least two of barium sulfate, ionic oxide, triiron tetrachloride, iron trichloride, magnesia and silica. The preparation process includes the steps of mixing material, pre-stoving, pressing and post-treatment. The carbon fiber reinforced friction resistance material has excellent friction resistance performance and the preparation process has no pollution.

The invention discloses a tin dioxide/carbon composite material, which contains nanometer tin dioxide and carbon, wherein the carbon is carbon fiber, and the nanometer tin dioxide is coated on the surface of the carbon fiber. A method for preparing the nanometer tin dioxide/carbon composite material comprises the following steps that: the carbon fiber with oxidized surface contacts an alkaline solution and then contacts tin tetrachloride under alkaline conditions. The method adopts a low-temperature condition to treat the tin dioxide/carbon fiber composite material, thereby effectively avoiding the adverse effect on carbon materials and tin dioxide nano-particles caused by high-temperature treatment. The method has the advantages of simple and convenient process, no pollution of solvents, convenient operation, and low cost. An effective constituent, namely the nanometer tin dioxide of photocatalysis is adhered to the carbon fiber with micron size, so the composite material is easy to recover.

The invention relates to a method for preparing titanium dioxide/silicate mineral nano composites. The method comprises the following steps of: firstly, adding silicate minerals to a titanium tetrachloride solution to activate the silicate minerals and dissolve foreign ions; secondly, adding a certain alkaline solution to convert titanium ions to titanium dioxide hydrate precipitates and washing off other foreign ions to obtain titanium dioxide hydrate/silicate mineral complex filter cakes; and thirdly, adding the filter cakes to the titanium tetrachloride solution, adopting the acid environment of the titanium tetrachloride solution to realize dissolution of the titanium dioxide hydrates, secondary activation of the silicate minerals and low temperature crystallization and growth of nanotitanium dioxide on the silicate minerals and carrying out filtering, washing, drying and grinding, thus finally preparing the titanium dioxide/silicate mineral nano composites. The method has the following advantages that the method is simple and practical in steps; the reaction conditions are mild; the raw materials are simple and have low cost; and the method is suitable for large-scale production and can be beneficial to effective improvement of the photocatalytic efficiency of titanium dioxide.

Production of biological diesel-oil by peanut-oil offal and waste edible oil etc. high-acidity grease is carried out by pre- esterification reacting liquefied catalyst tin tetrachloride with free fatty acid from waste grease to decrease acidity, centrifugal removing catalyst and glycerol, trans-esterifying for residual grease by KOH to generate biological diesel-oil. It's convenient and efficient, has gentle reactive condition and better quality.

A chemical vapor deposition process for laying down a tin or titanium oxide coating on a glass substrate through the use of an organic oxygen-containing compound and the corresponding metal tetrachloride. The organic oxygen compound is preferably an ester having an alkyl group with a β hydrogen in order to obtain a high deposition rate. The resulting article has a tin or titanium oxide coating which can be of substantial thickness because of the high deposition rates attainable with the novel process, and, in the case of titanium oxide coating possesses a desirable refractive index greater than 2.4. The coating growth rates resulting from the method of the present invention may be at least 130 Å per second.

The invention discloses a flame-retardant lithium ion battery electrolyte and a method for preparing the same and relates to a battery electrolyte. The electrolyte has the characteristic of flame retardance and complete non-combustion and is well compatible with an electrode material, and the wettability of a diaphragm can be improved. The flame-retardant lithium ion battery electrolyte comprises 5 to 20 percent of lithium salt, 60 to 90 percent of solvent and 1 to 20 percent of alkenyl phosphamide. The method comprises the following steps of: reacting dialkoxyl phosphoryl chloride and alkenyl-containing secondary amine, or hydro-diphosphite, the alkenyl-containing secondary amine, carbon tetrachloride and alkali, which are taken as raw materials, in an organic solvent to obtain an alkenyl phosphamide compound; and preparing the alkenyl phosphamide compound, the lithium salt and the solvent to obtain the flame-retardant lithium ion battery electrolyte.

The invention discloses a pore-diameter expanding method for a UiO-66 metal organic framework material. The pore-diameter expanding method comprises the following steps of: taking and mixing 2.47 parts by weight of zirconium tetrachloride, 1.47 parts by weight of terephthalic acid and 95 parts by weight of N, N-dimethyl formamide in a single-opening flask to carry out ultrasonic dissolving; putting in a microwave oven, condensing and refluxing for 15 minutes, and carrying out centrifugal separation; using alcohol and N, N-dimethyl formamide to wash a solid product, taking 1 part by weight of solid product, adding the solid product into 20 parts by weight N, N-dimethyl formamide solution with the concentration of dilute sulfuric acid being 0.25-1mol/L, stirring for 24 hours, then carrying out centrifugal separation, using N, N-dimethyl formamide and alcohol to wash, then drying in an environment with the temperature of 60-150 DEG C, then putting into a Soxhlet extractor, adopting acetone as a solvent to wash till siphoning for three times, after washing, drying for 6 hours in an environment with the temperature of 80 DEG C, and obtaining a mesoporous UiO-66 metal organic framework material. The UiO-66 metal organic framework material can be used as an absorbent to be applied to treatment of organic dyestuff wastewater.