37results about "Tin halides" patented technology

This invention pertains to particulate thermally reflective phase change material that includes an encapsulated phase change material coated with a thermally reflective layer.

A light valve containing ABX 3 perovskite particles (200) suspended in a liquid suspension (300) that can control light transmittance is provided. The preferable ABX 3 perovskite particles (200) are halide ABX 3 perovskite particles wherein A is at least one of Cs +, CH 3NH 3 +, and Rb +, B is at least one of Pb 2+, Ge 2+, and Sn 2+, and X is at least one of Cl-, Br-, and I-. Use of the light valve in the manufacture of a light control device and a method of controlling light transmittance by using the light valve are also provided.

A method for preparing stannous fluoride by sing hydrofluoric acid. The method uses hydrofluoric acid and stannous oxide as raw materials, and includes the following steps: (1) first adding hydrofluoric acid into a reactor, staring to stir, then adding a tin granular package in the equivalent of 8-12 wt% of the theoretical amount of stannous oxide, then adding the theoretical amount of stannous oxide into hydrofluoric acid at a speed of 15-25g / min, after material addition, continuing the reaction for 15-30 min, and after the reaction, removing the tin granular package; and from the addition of stannous oxide to the end of the reaction, introducing nitrogen into hydrofluoric acid, wherein the flow is controlled that no liquid spills; and (2) heating to 75-95 DEG C, maintaining the temperature, stirring for concentrating, and conducting vacuum drying to obtain a finished product. The stannous fluoride prepared by the method provided by the invention has low cost, high product yield and high purity.

This disclosure relates to a method for detecting at least one analyte in a tetrachloride sample comprising titanium, tin or silicon tetrachloride; comprising,(a) adding a mixture of water and acid, typically hydrochloric acid, to the sample under conditions effective for forming an aqueous solution of the sample;(b) introducing the aqueous solution of the sample into an inductively coupled mass spectrometer having a cell selected from the group of a reactive cell and a collision cell or both and producing an analyte ion comprising an interfering species;(c) contacting the analyte ion with a gas to produce a product which is substantially free from the interfering species; and(d) detecting and measuring at least one signal from the analyte in the solution. This disclosure further relates to a method for making an aqueous titanium, tin or silicon tetrachloride sample suitable for analysis in using inductively coupled plasma mass spectroscopy.

This invention discloses a solution based synthesis of cesium tin tri-iodide (CsSnI3). More specifically, the CsSnI3 is fabricated in an organic Perovskite precursor solvent. CsSnI3 are ideally suited for a wide range of applications such as light emitting and photovoltaic devices.

A process for recovering a metal chloride or mixed metal chloride from a solid waste material comprising recoverable metal containing constituents produced by lead, copper or zinc smelting and refining processes, said process comprising the steps of: (i) heating the solid waste material; (ii) treating the heated material of step (i) with a gaseous chloride to form a gaseous metal chloride containing product; and (iii) treating the gaseous metal chloride containing product of step (ii) to recover the metal chloride or mixed metal chloride. The metal chloride may be further treated to extract the metal itself.

The invention discloses a preparation method of stannous fluoride.The method comprises the steps that a material containing tin dioxide, a material containing calcium fluoride and sodium carboxymethylcellulose are ground, smashed, mixed and then placed in a CO-CO2 mixed atmosphere to be calcined at the temperature of 500 DEG C-1,000 DEG C, and stannous fluoride is recycled from calcination flue gas.Compared with an existing stannous fluoride preparation technology, the method has the advantages that operation is easy, convenience and environmental protection are achieved, the cost is low, and prepared stannous fluoride is high in purity and low in impurity content.

The invention belongs to the technical field of alloy waste material recovery and utilization, and discloses a method for recovering anhydrous indium salt and anhydrous tin salt from indium tin oxide. The method comprises the following steps that S1, the indium tin oxide is dissolved by acid; indium and tin exist in the acid in an ion form; S2, the acid is removed through distillation; an indium salt hydrate and a tin salt hydrate are left; S3, a dehydrating agent is added into the hydrates in the S2; heating reflux is performed to obtain the anhydrous indium salt and the anhydrous tin salt; S4, the anhydrous indium salt and the anhydrous tin salt are separated. The method disclosed by the invention has the advantages that the product with extremely high purity can be obtained; all used reagents can be almost cyclically used; no pollution is generated on the environment; less energy and fewer reagents are consumed by the method; the method can be stably used for large-scale industrial practice; a large amount of energy can be saved; the operation is simple and convenient; the extremely high economic performance is realized.

The present invention relates to a preparation method of stannous fluoride. The preparation method comprises the following steps: mixing an aqueous hydrofluoric acid solution and stannous sulfate to obtain a hydrofluoric acid solution of stannous sulfate; adding barium fluoride to the hydrofluoric acid solution of stannous sulfate, and reacting to obtain a fluoride solution The stannous hydrofluoric acid solution is filtered, and the filtrate is concentrated and dried to obtain stannous fluoride. The above method adopts a brand-new reaction route, and the prepared stannous fluoride product has high yield and purity, low production cost and simple technological process.

The invention provides a method for preparing stannous fluoride from tin dioxide. The method is to use tin dioxide, a fluorinating agent and a reducing agent as raw materials, use toluene as a water-carrying agent, and first add tin dioxide by weight 1- After 4 times of toluene, add tin dioxide at a certain stirring speed, heat the material to 80-85°C and then slowly add fluorinating agent and reducing agent. After the addition, keep the reaction system at 80-85°C, control reflux and separate oil and water The toluene-water azeotrope is removed from the reaction system, kept warm for 5-7.5 hours, filtered the material, added cyclohexane to wash the filter cake, filtered the washed filter cake and transferred to the drying equipment, at 50-80 ° C, 5 Dry under the condition of ‑20kPa to obtain stannous fluoride. The preparation method of the present invention has a simple process. By forming a toluene-water azeotropic system, water is removed from the reaction system to avoid the reaction of the generated stannous fluoride and water to form stannous oxyfluoride, and the obtained content is greater than 99%, and the amount of residual impurities is The stannous fluoride less than 0.005% is especially suitable for use in fine chemicals.

The present invention relates to a kind of preparation method of perovskite type compound, adopts four-step method, comprises the synthesis of CsSnX3 (Cs2SnX6), the synthesis of CsSnX3 (Sn), the removal of tin in CsSnX3 (Sn), the preparation of high-purity CsSnX3, in addition A preparation and sealing method of a cesium trihalide tin cesium CsSnX3 liquid is also proposed. The invention solves the problems of expensive raw materials, harsh process conditions, impure products and difficult separation in the current preparation method of trihalide tin cesium CsSnX3, and can obtain high-quality products without using high-purity raw materials and harsh purification processes. And the process is simple, not only suitable for laboratory preparation, but also suitable for industrial batch production.

A complex has a structure of formula (1A): SnXn·(m)L, wherein X is at least one type of halogen atoms, L is a polar solvent molecule, n is a value from 1.5 to 2.5, and m is a value from 0.3 to 1.9. A perovskite compound has a structure of formula (2A): RSnXj, wherein Sn has an oxidation number from 1.5 to 2.5, R is at least one type of a monovalent cation, X is at least one type of halogen atoms, and j is a value from 2.5 to 3.5, and the perovskite compound is free of tin oxide; or a perovskite compound has a structure of formula (2B): R2M2BiX1, wherein R is at least one type of a monovalent cation, X is at least one type of halogen atoms; M2 is a monovalent metal, and i is a value from 5.0 to 7.0.