Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for directly synthesizing metal (tungsten or molybdenum) carbonyl complex from tungsten oxide or molybdenum oxide

A metal carbonyl and oxide technology, applied in the field of powder metallurgy, can solve the problems of harsh reaction conditions, low synthesis efficiency, complex process, etc., and achieve the effects of mild synthesis conditions, easy operation and high synthesis efficiency

Inactive Publication Date: 2011-09-07
BEIJING CISRI GAONA TECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the existing methods have harsh reaction conditions, complicated process, low synthesis efficiency and high cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for directly synthesizing metal (tungsten or molybdenum) carbonyl complex from tungsten oxide or molybdenum oxide
  • Method for directly synthesizing metal (tungsten or molybdenum) carbonyl complex from tungsten oxide or molybdenum oxide
  • Method for directly synthesizing metal (tungsten or molybdenum) carbonyl complex from tungsten oxide or molybdenum oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First, add a reducing agent (mass The percentages are 3%, 8%, 80%, 9% in turn); fill and place 2MPa carbon monoxide in the reaction kettle for 3 times to remove the air in the reaction system, then the reaction kettle is heated to 200 ° C and kept for 4 hours; the reaction system is to be After cooling to 30 ℃, feed carbon monoxide to 8MPa and keep the pressure, then open the reactor stirring device to break the encapsulated reducing agent container, the stirring speed is 100 rpm, and the reaction is continued for 1 hour; after the reaction is completed, the solution is cooled to room temperature Then, the reaction solution was taken out, and 10.9 g of colorless crystals of tungsten hexacarbonyl were obtained by distillation and heating sublimation, and the product yield was about 12%.

Embodiment 2

[0023] First, add a reducing agent (mass The percentages are 4%, 9%, 75%, 12% in turn); fill and place 2MPa carbon monoxide in the reaction kettle for 3 times to remove the air in the reaction system, then the reaction kettle is heated to 220 ° C and kept for 6 hours; After cooling to 40 ℃, feed carbon monoxide to 10MPa and keep the pressure, then open the reactor stirring device to break the encapsulated reducing agent container, the stirring speed is 150 rpm, and the reaction continues for 6 hours; after the reaction is completed, the solution is cooled to room temperature Then, the reaction solution was taken out, and 24.6 g of colorless crystals of tungsten hexacarbonyl were obtained by distillation and heating sublimation, and the product yield was about 27%.

Embodiment 3

[0025] First, add a reducing agent (mass The percentages are 5%, 10%, 70%, 15% in turn); fill and place 2MPa carbon monoxide in the reaction kettle for 3 times to remove the air in the reaction system, then the reaction kettle is heated to 250 ° C and kept for 8 hours; After cooling to 50°C, feed carbon monoxide to 20MPa and keep the pressure, then open the reactor stirring device to break the encapsulated reducing agent container, the stirring speed is 200 rpm, and the reaction is continued for 12 hours; after the reaction is completed, the solution is cooled to room temperature Then, the reaction solution was taken out, and 55.8 g of colorless crystals of tungsten hexacarbonyl were obtained by distillation and heating sublimation, and the product yield was about 46%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

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.

Description

technical field [0001] The invention belongs to the field of powder metallurgy, in particular to a method for directly synthesizing tungsten or molybdenum carbonyl metal complex from tungsten oxide or molybdenum. Background technique [0002] Tungsten and molybdenum are rare metals, which are widely used in the national economy and military industry, and have become an indispensable strategic resource. In addition to being used in iron and steel metallurgy, tungsten and molybdenum compounds are also widely used in many fields such as electric light sources, machinery, and chemical industries. For example, adding tungsten or molybdenum to steel can reduce its decomposition temperature and expand the temperature range and depth of heat treatment; the high melting point of tungsten and molybdenum, as well as high strength and excellent electrical conductivity at high temperatures, make them widely used in the electric light source industry ; In the machinery industry, tungsten...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01G1/04C01G39/00C01G41/00
Inventor 李一李楠霍静柳学全石文丁存光李红印姜丽娟任勃
Owner BEIJING CISRI GAONA TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com