36 results about "Molybdenum hexacarbonyl" patented technology

The invention relates to polyisobutene amine serving as a main agent of a gasoline cleaning agent, which is a surface active agent. According to the technical scheme, a preparation method of the gasoline cleaning dispersing agent comprises the following steps: preparing epoxidation polyisobutene with high yield by using molybdenum hexacarbonyl as a catalyst and tert-butyl hydroperoxide as an oxygen source; and catalyzing and aminating the epoxidation polyisobutene serving as a raw material to obtain the polyisobutene amine product, and preparing the gasoline cleaning dispersing agent by using the polyisobutene amine, carrying oil, a demulsifying agent, an antioxidant, a polymerization inhibitor, an antirust agent, a metal deactivator and the like in proportion. The whole technological process is green and environmentally-friendly; and the product has excellent performances. The polyisobutene amine serves as the main agent of the gasoline cleaning agent and can effectively clean up carbon deposit of oil nozzles and deposits of intake valves and combustion chambers.

The invention discloses a multi-metal one-dimensional nano material, a preparation method and a catalyst, and the method comprises the following steps: adding soluble metal salt and hexadecyl trimethyl ammonium chloride into oleylamine, stirring for 5-30 minutes at room temperature, and carrying out ultrasonic treatment for 5-30 minutes; then adding molybdenum hexacarbonyl, reacting at 180 DEG C for 6-12 hours, finally naturally cooling to room temperature, washing with ethanol and n-hexane, and carrying out centrifugal treatment so as to obtain the multi-metal one-dimensional nano material, wherein the soluble metal salt comprises platinum acetylacetonate, and further comprises at least two of rhodium acetylacetonate, cobalt acetylacetonate and nickel acetylacetonate.

The invention relates to a method for one-step preparing of a MoS2 film with an ultra-lubricating function through atomic layer deposition and a product and application of the MoS2 film. A Si substrate is cleaned in the following manner that after the Si substrate is wiped by ethyl alcohol and acetone, the Si substrate is subjected to ultrasonic oscillating for 5-10 min sequentially in acetone anddeionized water, then, the Si substrate is repeatedly washed through deionized water and is blown dry through a nitrogen gun, the Si substrate is placed in an atomic layer deposition system reactionchamber, a Mo(CO)6(molybdenum hexacarbonyl) solid source and SH(CH2)2SH(dithioglycol) liquid source are adopted, and atomic layer deposition is adopted for one-step preparing of the MoS2 film with theexcellent lubrication effect. The additional high-temperature vulcanization process is not needed in the related preparing method, the integral preparing process is effectively simplified, the MoS2 film with the extremely low friction coefficient is obtained under the condition that the plasma technology and other auxiliary technologies are not used, large-scale batched production is easy to achieve, and important application potentials are achieved.

The invention discloses a preparation method of molybdenum disulfide nanotubes. The preparation method comprises the following technological steps: 1) paving molybdenum hexacarbonyl on the bottom of aceramic crucible; then putting a porous anodic aluminum oxide template above the molybdenum hexacarbonyl in a manner of placing an opening of the porous anodic aluminum oxide template downward; aftersealing the crucible, putting the crucible into a tubular furnace; under gas protection, sublimating and depositing at low temperature and pyrolyzing at high temperature; then cooling; 2) after cooling the vacuum tubular furnace to room temperature, putting the template into the ceramic crucible filled with sulfur powder in the manner of placing the opening of the template downward; after sealingthe crucible, raising the temperature under the gas protection, so as to enable monomer sulfur and metal molybdenum to directly react; 3) removing the porous aluminum oxide template by adopting a diluted acid solution and removing surplus sulfur by utilizing carbon disulfide; then carrying out suction filtration treatment and drying to obtain a finished product. The method disclosed by the invention has simple steps and no environment pollution and does not need complicated equipment; a prepared molybdenum disulfide nanotube powder material has strong size controllability and good crystallization performance; the nanotubes have a shape and uniform tube wall, so that the comprehensive performance of a molybdenum disulfide nanotube powder material finished product is greatly improved. The molybdenum disulfide nanotubes disclosed by the invention have wide applicability and large-scale industrial production is facilitated.

The invention provides a molybdenum ditelluride electrochemical energy storage material, the material is metastable molybdenum ditelluride, and its expression is 1T'-MoTe 2 , the morphology is a nanoflower structure or a nanosphere structure assembled by ultrathin nanosheets. The invention also provides a preparation method and application of the material, using oleylamine as the reducing agent, molybdenum hexacarbonyl or molybdenum pentachloride as the precursor of molybdenum, injecting the tellurium-trioctylphosphine precursor at a certain temperature, and controlling the reaction temperature and reaction time, thereby preparing a metastable hexagonal phase molybdenum ditelluride nanoflower structure or nano spherical structure with uniform size and regular shape. This type of material exhibits excellent supercapacitor energy storage performance and is suitable for the field of new energy development.

The invention discloses a method for preparing molybdenum ditelluride nanotubes. The method comprises the following steps: 1) laying molybdenum hexacarbonyl to the bottom of a ceramic crucible, layinga porous anodic aluminum oxide mold plate with an opening facing downwards on the molybdenum hexacarbonyl, sealing the ceramic crucible, putting into a tubular furnace, performing low-temperature sublimation deposition in the presence of a gas, and continuously performing heating pyrolysis; 2) cooling the vacuum tubular furnace to the room temperature, putting the mold plate with the opening facing downwards into a ceramic crucible with tellurium powder, sealing the ceramic crucible, heating in the presence of the gas, and enabling a single substance, namely tellurium, to react with a metal,namely molybdenum, directly; 3) removing the excessive aluminum oxide mold plate and excessive tellurium by using a diluted acid solution, performing suction filtration treatment, and drying, therebyobtaining a finished product. The method disclosed by the invention is simple in step, free of environment pollution and free of complex equipment, a molybdenum ditelluride nanotube powder material prepared by using the method is good in size controllability, good in crystallinity and uniform in nanotube wall and morphology, and thus the comprehensive properties of a finished product of the molybdenum ditelluride nanotube powder material are greatly improved. The method is wide in applicability and beneficial to large-scale industrial production.

The invention discloses a method for preparing molybdenum diselenide nanotubes. The method comprises the following steps: 1) laying molybdenum hexacarbonyl to the bottom of a ceramic crucible, layinga porous anodic aluminum oxide mold plate with an opening facing downwards on the molybdenum hexacarbonyl, sealing the ceramic crucible, putting into a tubular furnace, performing low-temperature sublimation deposition in the presence of a gas, and continuously performing heating pyrolysis; 2) cooling the vacuum tubular furnace to the room temperature, putting the mold plate with the opening facing downwards into a ceramic crucible with selenium powder, sealing the ceramic crucible, heating in the presence of the gas, and enabling a single substance, namely selenium, to react with a metal, namely molybdenum, directly; 3) removing the excessive aluminum oxide mold plate and excessive selenium by using a diluted acid solution, performing suction filtration treatment, and drying, thereby obtaining a finished product. The method disclosed by the invention is simple in step, free of environment pollution and free of complex equipment, a molybdenum diselenide nanotube powder material prepared by using the method is good in size controllability, good in crystallinity and uniform in nanotube wall and morphology, and thus the comprehensive properties of a finished product of the molybdenumdiselenide nanotube powder material are greatly improved. The method is wide in applicability and beneficial to large-scale industrial production.

The invention relates to a method for one-step preparing of a MoS2 film with an ultra-lubricating function through atomic layer deposition and a product and application of the MoS2 film. A Si substrate is cleaned in the following manner that after the Si substrate is wiped by ethyl alcohol and acetone, the Si substrate is subjected to ultrasonic oscillating for 5-10 min sequentially in acetone anddeionized water, then, the Si substrate is repeatedly washed through deionized water and is blown dry through a nitrogen gun, the Si substrate is placed in an atomic layer deposition system reactionchamber, a Mo(CO)6(molybdenum hexacarbonyl) solid source and SH(CH2)2SH(dithioglycol) liquid source are adopted, and atomic layer deposition is adopted for one-step preparing of the MoS2 film with theexcellent lubrication effect. The additional high-temperature vulcanization process is not needed in the related preparing method, the integral preparing process is effectively simplified, the MoS2 film with the extremely low friction coefficient is obtained under the condition that the plasma technology and other auxiliary technologies are not used, large-scale batched production is easy to achieve, and important application potentials are achieved.

The invention relates to polyisobutene amine serving as a main agent of a gasoline cleaning agent, which is a surface active agent. According to the technical scheme, a preparation method of the gasoline cleaning dispersing agent comprises the following steps: preparing epoxidation polyisobutene with high yield by using molybdenum hexacarbonyl as a catalyst and tert-butyl hydroperoxide as an oxygen source; and catalyzing and aminating the epoxidation polyisobutene serving as a raw material to obtain the polyisobutene amine product, and preparing the gasoline cleaning dispersing agent by using the polyisobutene amine, carrying oil, a demulsifying agent, an antioxidant, a polymerization inhibitor, an antirust agent, a metal deactivator and the like in proportion. The whole technological process is green and environmentally-friendly; and the product has excellent performances. The polyisobutene amine serves as the main agent of the gasoline cleaning agent and can effectively clean up carbon deposit of oil nozzles and deposits of intake valves and combustion chambers.

An ultrafine copper-platinum alloy nanowire and a preparation method thereof, the invention relates to a platinum-based alloy and a preparation method thereof. It is to solve the technical problem of the limited shape of the existing platinum-based alloy nanoparticles. The diameter of the ultrafine copper-platinum alloy nanowire of the invention is 3nm-5nm, and the length is 1.5μm-3μm. Its preparation method: 1. prepare platinum oleylamine solution containing platinum acetylacetonate, molybdenum hexacarbonyl and CTAC; then prepare copper oleylamine solution containing copper acetylacetonate; Then add copper oleylamine solution, heat up to 210-230° C. for reaction, and cool to room temperature; 3. Wash and centrifuge to obtain ultrafine copper-platinum alloy nanowires. The aspect ratio of the nano wire of the invention reaches 300-1000, and can be used as a catalyst in the fields of fuel cell, sensor, petrochemical industry, automobile industry and the like.

The invention discloses a method for preparing a molybdenum trioxide nanotube. The method comprises the following process steps: 1) using hexacarbonyl molybdenum as a raw material, and porous anodizedalumina as a template, placing the opening of the template downward above a raw material, sealing a crucible and then placing in a muffle furnace for heating, performing low temperature sublimation,depositing the hexacarbonyl molybdenum, and continuously increasing the temperature, so that the hexacarbonyl molybdenum deposited in the porous anodized alumina template is thermally decomposed to form a metal molybdenum deposit; 2) continuously increasing the temperature so that the metal molybdenum deposit in step 1) is oxidized; 3) removing the porous alumina template with a dilute acid solution, followed by suction filtration and drying, to obtain the finished product. The method disclosed by the invention has simple steps, no environmental pollution, and no need for complicated equipment, and the prepared molybdenum trioxide nanotube material has strong diameter controllability, good crystallinity, and uniform nanotube wall morphology, thereby greatly improving the comprehensive performance of the finished molybdenum trioxide nanotube material product. The method disclosed by the invention has wide applicability and is favorable for large-scale industrial production.

The present invention relates to a method of preparing catalysts based on molybdenum sulphide, with an alkaline promoter incorporated, said catalysts being employed in the production of alcohols, especially ethanol, from synthesis gas. The method involves reaction of molybdenum hexacarbonyl (Mo(CO)6) with sulphur, so as to generate molybdenum sulphide, in which an alkaline promoter is then incorporated, so as to obtain a solid catalyst for application in processes of production of alcohols from synthesis gas, selective for ethanol.

The invention relates to a method for directly synthesizing a metal (tungsten or molybdenum) carbonyl complex from tungsten oxide or molybdenum oxide, belonging to the technical field of powder metallurgy. The method comprises the following steps: putting tungsten or molybdenum oxide, carbon tetrachloride, a nonpolar organic solvent and an independently packaged reducer into a sealed reaction kettle provided with a stirrer; replacing air in the reaction system by repeatedly charging carbon monoxide into the reaction kettle and discharging the carbon monoxide from the reaction kettle, heating the reaction kettle to 200-250 DEG C, and keeping the temperature for 4-8 hours; after the reaction system is cooled to 30-50 DEG C, introducing carbon monoxide to 5-20 MPa, keeping the pressure, starting the stirrer of the reaction kettle, breaking the container packaging the reducer, wherein the stirring is carried out at the rotation speed of 100-200 rpm for 1-12 hours; and after the reaction finishes and the solution is cooled to room temperature, taking out the reaction solution, distilling and heating for sublimation to obtain the clear crystal of tungsten hexacarbonyl or molybdenum hexacarbonyl. The invention has the advantages of simple technique, high safety in production, low cost and high synthesis efficiency, and has wide application prospects in the market.

The invention discloses a preparation method of molybdenum disulfide nanotubes. The preparation method comprises the following technological steps: 1) paving molybdenum hexacarbonyl on the bottom of aceramic crucible; then putting a porous anodic aluminum oxide template above the molybdenum hexacarbonyl in a manner of placing an opening of the porous anodic aluminum oxide template downward; aftersealing the crucible, putting the crucible into a tubular furnace; under gas protection, sublimating and depositing at low temperature and pyrolyzing at high temperature; then cooling; 2) after cooling the vacuum tubular furnace to room temperature, putting the template into the ceramic crucible filled with sulfur powder in the manner of placing the opening of the template downward; after sealingthe crucible, raising the temperature under the gas protection, so as to enable monomer sulfur and metal molybdenum to directly react; 3) removing the porous aluminum oxide template by adopting a diluted acid solution and removing surplus sulfur by utilizing carbon disulfide; then carrying out suction filtration treatment and drying to obtain a finished product. The method disclosed by the invention has simple steps and no environment pollution and does not need complicated equipment; a prepared molybdenum disulfide nanotube powder material has strong size controllability and good crystallization performance; the nanotubes have a shape and uniform tube wall, so that the comprehensive performance of a molybdenum disulfide nanotube powder material finished product is greatly improved. The molybdenum disulfide nanotubes disclosed by the invention have wide applicability and large-scale industrial production is facilitated.

The invention provides tungsten alloy coating preparation equipment and method and relates to the technical field of surface engineering, in particular to tungsten alloy coating preparation equipmentcomprising a reactor arranged in a heating furnace. The reactor communicates with a tail gas treatment device through an exhaust pipeline and communicates with hydrogen, argon, tungsten hexacarbonyl and molybdenum hexacarbonyl through gas delivery pipelines correspondingly, and the argon and the tungsten hexacarbonyl communicate with the molybdenum hexacarbonyl. The invention further provides thetungsten alloy coating preparation method comprising the steps that an atmospheric pressure chemical vapor deposition method is adopted for preparing a metal tungsten alloy coating, precursors used for deposition are the tungsten hexacarbonyl and the molybdenum hexacarbonyl, decomposition reaction is conducted under low temperature to prepare a tungsten coating, and the reaction equation is W(CO)6->W+6CO, Mo(CO)6->Mo+6CO. the technical scheme is adopted, resistance to high temperature gas oxidation scouring and resistance to corrosive medium erosion of a C / C composite, graphite, steel, titanium and other materials can be improved, and service time is prolonged.

The invention relates to the technical field of electrocatalytic materials, in particular to a platinum-rhodium-yttrium nanowire and a preparation method and application thereof. The present invention uses cetyl ammonium chloride as a surfactant and a structure-directing agent, and molybdenum hexacarbonyl as a structure-limiting agent is mixed with a platinum source, a rhodium source and yttrium acetylacetonate, and participates in the preparation process of platinum-rhodium-yttrium nanowires , and combined with hydrothermal reaction, nanowires with a face-centered cubic structure of atoms in disordered arrangement are obtained. The platinum rhodium yttrium nanowires prepared by the method have a large specific surface area, a large number of active sites and fast electron transport Efficiency, so that it has a higher catalytic performance, and at the same time, the platinum-rhodium-yttrium nanowires reduce the content of metal platinum compared with metal platinum catalysts, and enhance the ability to resist CO poisoning, thereby improving the ability of electrochemically catalyzing methanol oxidation.