50results about "Molybdenum halides" patented technology

The present invention relates to a process for producing molybdenum dioxide dichloride, which is a very efficient process that does not use hazardous chlorine gas and high reaction temperatures and enables the production of molybdenum dioxide dichloride in high yield without solvent.

To provide glass fiber yarn and a method for manufacturing the same.SOLUTION: A method for manufacturing glass fiber yarn comprises a coating step of coating a molybdenum compound on the surfaces of inorganic particles to form the surface-treated inorganic particles; a sintering step of sintering the surface-treated inorganic particles on a temperature condition of 400 to 1,000°C in a nitrogen gas atmosphere; a mixture step of mixing the surface-treated inorganic particles into a molten glass raw material; and a spinning step of spinning the molten glass raw material including the surface-treated inorganic particles to form glass fiber yarns.SELECTED DRAWING: Figure 1

The present invention provides a method for preparing molybdenum dioxide dichloride based on a molybdenum-containing solution. The technical scheme comprises the following steps: adjusting the pH of the molybdenum-containing solution to 7.5-9.0 using a pH regulator to obtain a treated molybdenum-containing solution; adding a calcium source to the treated molybdenum-containing solution at a molar ratio of molybdenum to calcium source of 1:1.5-2.0, stirring, and solid-liquid separation to obtain a molybdenum-containing precipitate; mixing the molybdenum-containing precipitate with a chlorinating agent at a molar ratio of molybdenum to chlorinating agent of 1:1-4 to obtain a chlorination reaction product; placing the chlorination reaction product in a reaction apparatus, introducing a protective atmosphere, and reacting at 150-180°C for 1-3 hours to produce molybdenum dioxide dichloride gas; and condensing the molybdenum dioxide dichloride gas at 0-50°C to obtain molybdenum dioxide dichloride based on the molybdenum-containing solution. This method features a simple process, environmental friendliness, high safety, and low energy consumption. The prepared molybdenum dioxide dichloride based on the molybdenum-containing solution is of high purity.

The invention relates to preparation equipment of high-purity electronic-grade molybdenum hexafluoride, which comprises a molybdenum hexafluoride reactor used for heating molybdenum powder and fluorine gas to react; the cyclone separator is connected to the discharge end of the molybdenum hexafluoride reactor and is used for carrying out gas-solid separation on the molybdenum hexafluoride original gas to obtain crude molybdenum hexafluoride gas; the variable-pressure condensation filter is connected to the gas outlet end of the cyclone separator, and the variable-pressure condensation filter is used for carrying out variable-pressure condensation on the molybdenum hexafluoride crude gas and filtering impurities solidified after condensation to obtain molybdenum hexafluoride crude liquid; the light component removal tower is connected to the liquid outlet end of the variable-pressure condensation filter, and hydrogen fluoride is removed from the molybdenum hexafluoride crude product liquid by the light component removal tower; the liquid inlet end of the bubble breaking rectifying tower is connected to the bottom of the light component removal tower, and the bubble breaking rectifying tower is used for purifying molybdenum hexafluoride in the molybdenum hexafluoride crude product liquid to obtain the electronic grade molybdenum hexafluoride.

Methods for controlling the crystal phase ratio of a molybdenum precursor are provided. A method includes gasifying a molybdenum reagent in a first vessel at a first temperature and a first pressure to obtain a gasified molybdenum precursor; flowing the vaporized molybdenum precursor from the first vessel to a second vessel; and condensing the vaporized molybdenum precursor in the second vessel at a second temperature and a second pressure to obtain a crystal phase ratio of the molybdenum precursor.

This invention discloses a process for preparing chlorides by reducing chlorination with rare metal oxides, comprising the following steps: S1, in an inert atmosphere, a mixture containing rare metal oxide powder, a reducing agent, and a chloride salt is subjected to a reduction reaction at a predetermined temperature 1; S2, the temperature is lowered to a predetermined temperature 2, oxygen is introduced, and the concentration of oxygen in the mixed gas is adjusted to carry out a chlorination reaction, and the chlorinated product is condensed and collected. This invention eliminates the need for gaseous chlorinating agents such as chlorine or hydrogen chloride, avoiding the leakage risks of liquid chlorine and compressed hydrogen chloride during storage and transportation; the raw materials can be directly rare metal oxides, with a wide range of sources, good process adaptability, and significantly reduced production costs.

The present invention relates to a hybrid nanomaterial comprising an octahedral crystalline cluster of formula [Mo6Ii8(OH)a4(H2O)a2]·2H2O, wherein the crystalline cluster is supported on graphene. Furthermore, the invention relates to a method for preparing the hybrid nanomaterial of the invention, and to a gas detection system comprising at least: (a) a gas sensor provided with a hybrid nanomaterial according to the present invention; and (b) optical interrogation means and / or electrical interrogation means configured to interrogate the gas sensor.

The present invention relates to high-purity molybdenum dichloride dioxide and a preparation method therefor. In the molybdenum dichloride dioxide, the amount of silicon (Si) in the impurities is 400 wt ppm or less. High-purity molybdenum dichloride dioxide can be obtained due to a preparation process that includes sublimation purification.

The present invention relates to high-purity molybdenum dichloride dioxide and a preparation method therefor. In the molybdenum dichloride dioxide, the amount of silicon (Si) in the impurities is 400 wt ppm or less. High-purity molybdenum dichloride dioxide can be obtained due to a preparation process that includes sublimation purification.

The invention relates to a method for producing MoO2Cl2 under inert conditions, comprising the steps of:(i) charging a reaction vessel with MoO2,(ii) reacting the MoO2 with supplied Cl2 in the reaction vessel at a first temperature T1 to give gaseous MoO2Cl2,(iii) transferring the gaseous MoO2Cl2 into a receiving vessel,(iv) resublimating the gaseous MoO2Cl2 in the receiving vessel to give solid MoO2Cl2 at a second temperature T2 that is lower than T1, and(v) recovering solid MoO2Cl2 with a purity determined by ICP-OES / MS of 99.9996 wt. % or more.The invention also relates to high-purity MoO2Cl2, the use thereof, and electronic components.

This invention relates to an apparatus for preparing high-purity electronic-grade molybdenum hexafluoride, comprising: a molybdenum hexafluoride reactor for heating and reacting molybdenum powder and fluorine gas; a cyclone separator connected to the outlet of the molybdenum hexafluoride reactor for gas-solid separation of the raw molybdenum hexafluoride gas to obtain crude molybdenum hexafluoride gas; a pressure swing condenser connected to the outlet of the cyclone separator for pressure swing condensation of the crude molybdenum hexafluoride gas and filtration of the solidified impurities after condensation to obtain crude molybdenum hexafluoride liquid; a light-light-removal tower connected to the liquid outlet of the pressure swing condenser for removing hydrogen fluoride from the crude molybdenum hexafluoride liquid; and a defoaming distillation tower connected to the bottom of the defoaming distillation tower for purifying the molybdenum hexafluoride in the crude molybdenum hexafluoride liquid to obtain electronic-grade molybdenum hexafluoride.

The invention relates to a bubble breaking rectifying tower for preparing high-purity electronic grade molybdenum hexafluoride and a control method, the bubble breaking rectifying tower comprises a plurality of bubble stretching and thinning mechanisms, each bubble stretching and thinning mechanism comprises a gas flow guide frame body, a fixed plate body and a bubble attachment plate, the gas flow guide frame bodies and the fixed plate bodies are arranged on a first mounting bracket at intervals, and the gas flow guide frame bodies and the fixed plate bodies are arranged on a second mounting bracket at intervals; the middle part of the bubble attachment plate is transversely hinged to the top end of the fixed plate body, the bubble attachment plate shields an opening of the gas guide frame body in an unstressed state, and the gas guide frame body and the bubble attachment plate are arranged at an interval; the liquid driving devices are arranged on the second mounting support and used for outputting liquid towards the top of the bubble attachment plate, the bubble attachment plate stretches and thinns a contact line between the foam corresponding fixing plate body and the bubble attachment plate in the rapid swinging process, and after the bubble attachment plate and the gas flow guide frame body are opened, the bubble attachment plate and the gas flow guide frame body are separated from each other. And the bubble attachment plate drives air to flow into the opening so as to break the stretched and thinned part.

To provide a method for manufacturing high-purity molybdenum oxychloride and a manufacturing apparatus thereof.SOLUTION: The present invention relates to a method for manufacturing molybdenum oxychloride including: a reaction step of adding molybdenum powder, chlorine gas, and oxygen to a reactor and heating them to prepare molybdenum oxychloride (MoO2Cl2); a solidification and condensation step of transferring a reacted material in the reactor from the reactor to a condensation tank to solidify the reacted material on a surface of the condensation tank; a liquefaction step of heating a product solidified in the solidification and condensation step to convert the product into a liquid phase; and a purification step of filtering the product liquefied in the liquefaction step to increase purity, and a manufacturing apparatus thereof.SELECTED DRAWING: Figure 1

Aspects disclosed herein include a system for generating singlet oxygen in a gas, the system comprising: a substrate; and hexanuclear clusters operably immobilized on at least a portion of the substrate; wherein each hexanuclear cluster comprises a photosensitive octahedral core complex characterized by formula FX1a: M6X8 (FX1a); wherein each M is independently Mo, W, or Re; wherein each X is independently a halide anion ligand; wherein the clusters are exposed to the gas and the gas comprises O2 gas; wherein the clusters are exposed to a light; and wherein each hexanuclear cluster is a photosensitizer configured to generate the gaseous singlet oxygen when irradiated by the light in the presence of the O2 gas.

Provided is a process which allows uranium and molybdenum fluorides to be efficiently separated, said process comprising a step of providing a mixture containing MoF6 and UF6; a step of reducing the UF6 to UF5 in the gas phase or in a liquid phase; and a step of separating the UF5 and the MoF6 or a conversion product thereof which may be obtained by further converting the molybdenum fluoride to another molybdenum compound. In a further aspect, a process for the fluorination of metals or semimetals is provided.

An apparatus for producing molybdenum oxyhalide according to one aspect of the present invention comprises a reaction zone to which a halogen-containing gas is supplied, wherein a raw material containing molybdenum oxide is transferred so as to pass through the reaction zone, and molybdenum oxyhalide is produced.

The present invention relates to a method for producing molybdenum dioxide dichloride. The method for producing molybdenum dioxide dichloride of the present invention can produce molybdenum dioxide dichloride in high yield and without using hazardous chlorine gas or high reaction temperatures, and therefore has the advantages of being safe and being capable of being produced in both small-scale and large-scale production, making it an industrially very useful and efficient method.

This application provides a method for the sublimation purification of electronic-grade molybdenum-based compounds, belonging to the field of electronic specialty gas purification technology. The method includes the following steps: S1. A solid raw material is placed in a sublimation tube, and high-purity inert gas is supplied into the sublimation tube until the pressure is not lower than 0.1 MPa. High-purity inert gas is continuously supplied under heating conditions to purge the solid raw material in the sublimation tube. The processing temperature is higher than the sublimation point of low-sublimation-point impurities at this pressure but lower than the sublimation point of the molybdenum-based compound at this pressure, yielding an intermediate. S2. The temperature of the sublimation tube is lowered to room temperature, and the supply of high-purity inert gas is stopped. The sublimation tube is evacuated until the pressure drops below 100 Pa. Then, the intermediate in the sublimation tube is heated, wherein the processing temperature is not lower than the sublimation point of the molybdenum-based compound at this pressure. The molybdenum-based compound prepared by this method has both high purity and high yield.

This invention relates to a defoaming distillation column and control method for preparing high-purity electronic-grade molybdenum hexafluoride, comprising: several bubble stretching and thinning mechanisms, each including a gas guiding frame, a fixed plate, and a bubble attachment plate. The gas guiding frame and the fixed plate are spaced apart on a first mounting bracket. The middle part of the bubble attachment plate is laterally hinged to the top of the fixed plate. When the bubble attachment plate is not under stress, it blocks the opening of the gas guiding frame. A gap is provided between the gas guiding frame and the bubble attachment plate. Several liquid driving devices are mounted on a second mounting bracket. The liquid driving devices output liquid toward the top of the bubble attachment plate. During the rapid oscillation of the bubble attachment plate, the contact line between the foam and the fixed plate and the bubble attachment plate is stretched and thinned. After an opening appears between the bubble attachment plate and the gas guiding frame, the bubble attachment plate drives air into the opening, thereby breaking the stretched and thinned portion.

Provided is a molybdenum oxychloride characterized in having a purity of 99.9995 wt% or higher. Additionally provided is a manufacturing method of a molybdenum oxychloride including the steps of reacting MoO3 and Cl2 and synthesizing the molybdenum oxychloride in a reaction chamber, and cooling the synthesized molybdenum oxychloride gas and precipitating the molybdenum oxychloride in a recovery chamber, wherein an impurity trap is provided between the reaction chamber and the recovery chamber, and impurities are removed with the impurity trap. An object of the present invention is to provide a high-purity molybdenum oxychloride and a manufacturing method therefor.

The invention discloses a purification method and a purification system of molybdenum pentachloride, and belongs to the technical field of purification of molybdenum pentachloride. The solid raw materials are placed at the bottom of a sublimation tube, and the sublimation tube is vacuumized to be not higher than 1 mBar. Adjusting the temperature of the heater and the condensation finger in the sublimation pipe, so that the low-sublimation-point impurities in the solid raw material are sublimated and desublimated in sequence and are attached to the condensation finger on the lower layer, and removing part of the first impurities in advance. Then the temperature is adjusted again, so that molybdenum pentachloride in the solid raw material is sublimated and desublimated in sequence and is attached to the condensation finger on the upper layer, and second impurities in the solid raw material are left at the bottom of the sublimation tube. And the circulation is carried out, the temperature of the condensation finger is adjusted step by step, and a high-purity molybdenum pentachloride product is obtained at the condensation finger on the upper layer.

The application discloses a preparation method of rare metal chloride, which comprises the following steps: in an inert atmosphere, a mixture containing rare metal powder, a chlorine salt and an auxiliary material is heated to a predetermined temperature, oxygen is introduced, the concentration of oxygen in the mixed gas is adjusted, a chlorination reaction is carried out, and a chlorination product is condensed and collected to obtain the rare metal chloride. The application avoids the safety production risk caused by the use of chlorine or hydrogen chloride in the traditional production, and the production process avoids the leakage risk of liquid chlorine and compressed hydrogen chloride in the storage and transportation process. Since the reaction process is a double decomposition reaction, the reaction rate is controllable, the reaction does not have obvious heat release, and is safe and reliable. The chlorine content in the production tail gas is extremely low, and the environmental pollution problem caused by a large amount of chlorine-containing tail gas in the traditional chlorination process is avoided.

The invention belongs to the technical field of molybdenum hexafluoride reactors, particularly relates to a high-purity electronic-grade molybdenum hexafluoride reactor, and provides the following scheme aiming at the problem that an existing molybdenum hexafluoride reactor lacks an effective waste heat recovery measure: the high-purity electronic-grade molybdenum hexafluoride reactor comprises a reactor body; the bottom of the top cover is fixedly connected with the upper side of the reactor body, and an exhaust pipe is arranged on the upper side of the top cover; the gas conveying pipe is located on the reactor body, a round hole is formed in the outer portion of the reactor body, and the inner wall of the round hole is fixedly connected with the outer portion of the gas conveying pipe. According to the high-purity electronic-grade molybdenum hexafluoride reactor disclosed by the invention, waste heat contained in produced molybdenum hexafluoride gas can be used for preheating molybdenum powder serving as a raw material, so that the heat consumption in the reactor body is reduced, and the temperature in the reactor body is always kept at the optimal reaction temperature; molybdenum powder can fully react with fluorine gas, the conversion efficiency of the device on raw materials is improved, and meanwhile the energy utilization rate is increased.

High purity molybdenum precursors and methods for purifying molybdenum precursors are provided, including obtaining a first container containing a solid reagent, evaporating at least a portion of the solid reagent to produce a vapor containing MoCl vapor and a molybdenum impurity vapor, flowing at least a portion of the MoCl vapor and at least a portion of the molybdenum impurity vapor into a second container, condensing at least a portion of the MoCl vapor in the second container to separate the MoCl from the molybdenum impurity, and removing at least a portion of the molybdenum impurity vapor from the second container to obtain a MoCl precursor.

The invention belongs to the field of synthesis of molybdenum dioxide dichloride, and particularly relates to a synthesis method of molybdenum dioxide dichloride. Comprising the following steps: S1, pretreating a molybdenite raw material; s2, the pretreated molybdenite raw material is placed in a reactor, chlorine trifluoride, oxygen, fluorine mixed gas and inert gas are introduced into the reactor and react with the pretreated molybdenite raw material at the reaction temperature of 20-50 DEG C, and a crude product of dichloromolybdenum dioxide and a crude product of sulfur tetrafluoride are generated; and collecting a dichloromolybdenum dioxide crude product from the bottom of the reactor. The raw ore molybdenite is used as the molybdenum raw material, the cost of the synthesis process is reduced, the process route is simple, and the reaction conditions are milder; in addition, the byproduct sulfur tetrafluoride in the invention is a product with high added value.

Provided is a molybdenum oxychloride characterized in having a purity of 99.9995 wt % or higher. Additionally provided is a manufacturing method of a molybdenum oxychloride including the steps of reacting MoO3 and Cl2 and synthesizing the molybdenum oxychloride in a reaction chamber, and cooling the synthesized molybdenum oxychloride gas and precipitating the molybdenum oxychloride in a recovery chamber, wherein an impurity trap is provided between the reaction chamber and the recovery chamber, and impurities are removed with the impurity trap.

Provided is a molybdenum oxychloride characterized in having a purity of 99.9995 wt% or higher. Additionally provided is a manufacturing method of a molybdenum oxychloride including the steps of reacting MoOs and Cl2 and synthesizing the molybdenum oxychloride in a reaction chamber, and cooling the synthesized molybdenum oxychloride gas and precipitating the molybdenum oxychloride in a recovery chamber, wherein an impurity trap is provided between the reaction chamber and the recovery chamber, and impurities are removed with the impurity trap. An object of the present invention is to provide a high-purity molybdenum oxychloride and a manufacturing method therefor.

The present invention relates to high-purity molybdenum dichloride dioxide and a method for producing the same. The molybdenum dichloride dioxide is characterized in that the silicon (Si) content among impurities is 400 weight ppm or less, and high-purity molybdenum dichloride dioxide can be obtained by producing the molybdenum dichloride dioxide through a sublimation purification process.

The present invention provides a molybdenum precursor having high purity and a method of purifying the molybdenum precursor. A method comprises: obtaining a first container comprising a solid reagent; vaporizing at least a portion of the solid reagent to produce a vapor including MoCl5 vapor and molybdenum impurity vapor; enabling at least one part of the MoCl5 vapor and at least one part of the molybdenum impurity vapor to flow to a second container; condensing at least a portion of the MoCl5 vapor in the second vessel to separate the MoCl5 from the molybdenum impurities; and removing at least a portion of the molybdenum impurity vapor from the second vessel to obtain a MoCl5 precursor.