Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of vanadium pentoxide sol

A technology of vanadium pentoxide sol and vanadium salt, applied in vanadium oxide and other directions, can solve the problems of unstable product, high cost, and difficulty in obtaining, and achieve the effects of simple and easy operation, mild reaction conditions, and low purity requirements.

Active Publication Date: 2013-12-25
UNIV OF SCI & TECH BEIJING
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses vanadium pentoxide powder, a highly toxic controlled drug, as a raw material, which is not easy to obtain, and the prepared vanadium pentoxide sol is unstable, prone to precipitation or flocculation, resulting in unusable sol
[0008] The present invention aims at the problems existing in the above-mentioned preparation method, and has invented a method for quickly preparing vanadium pentoxide sol at low temperature, which overcomes the problems of high toxicity of raw materials, high cost, poor process operability, and poor product quality in the traditional sol preparation method. Problems such as stability and perishability

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
  • Preparation method of vanadium pentoxide sol
  • Preparation method of vanadium pentoxide sol
  • Preparation method of vanadium pentoxide sol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh 0.01mol (2.28g) of vanadyl sulfate and dissolve it in 100ml of deionized water to obtain a 0.1mol / L blue transparent precursor solution. Co-precipitate the precursor solution and the ammonia solution in 100ml of deionized water, adjust the amount of the ammonia solution to keep the pH of the suspension at around 4 after the coprecipitation is completed. The resulting slurry suspension was centrifuged to remove impurities. Add deionized water to the washed precipitate to dilute into a suspension, so that the concentration of vanadium ions is 0.1 mol / L. Use a water bath heating device to keep the temperature of the suspension at about 5°C, and add 1ml of hydrogen peroxide (30%) solution under stirring conditions to carry out peptization reaction. After stirring for 3 h, an orange-red stable and transparent sol was obtained. attached figure 1 It is the photoelectron energy spectrum narrow-range scan diagram of the powder after drying the sol obtained in Example 1...

Embodiment 2

[0040] Weigh 0.04mol (9.12g) of vanadyl sulfate and dissolve it in 100ml of deionized water to obtain a 0.4mol / L blue transparent precursor solution. Co-precipitate the precursor solution and ammonium bicarbonate solution in 100ml of deionized water to adjust the ammonium bicarbonate solution The added amount keeps the pH of the suspension at about 6 after the co-precipitation is completed. The resulting suspension was centrifuged 5 times with deionized water to remove impurities. Add deionized water to the obtained precipitate and dilute to form a suspension, so that the concentration of vanadium ions is 0.2 mol / L. Use a water bath heating device to keep the temperature of the suspension at about 25°C, add 5ml of hydrogen peroxide (30%) solution, 2g of polyvinylpyrrolidone and 0.5g of polyethyleneimine successively under stirring conditions for peptization reaction. After stirring for 3 h, a blood red stable and transparent sol was obtained. attached image 3 It is the XRD...

Embodiment 3

[0042] Weigh 0.06mol (13.68g) of vanadyl sulfate and dissolve it in 100ml of deionized water to obtain a 0.6mol / L blue transparent precursor solution. Co-precipitate the precursor solution with a mixed solution of potassium hydroxide and ammonia water in 100ml of deionized water. The adding amount of the mixed solution of potassium hydroxide and ammonia water keeps the pH of the suspension at about 7 after the co-precipitation is completed. The obtained suspension was centrifuged and washed 5 times with deionized water to remove impurities. Add deionized water to the obtained precipitate to dilute to form a suspension, so that the concentration of vanadium ions is 0.3 mol / L. Heat the suspension in a water bath to 40°C, add 5ml of hydrogen peroxide (30%) solution, 2ml of oxalic acid (0.1mol / L) solution, and 0.5g of polyethylene glycol successively under stirring conditions for peptization reaction, and stir for 30 minutes. A dark red stable transparent sol was obtained.

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 discloses a preparation method of vanadium pentoxide sol. The preparation method mainly comprises the following steps: firstly, dissolving a soluble vandic salt in deionized water to prepare a precursor solution, then, co-precipitating the precursor solution with a precipitant to obtain a precipitate, and finally, peptizing the precipitate in a colloidal solution composed of deionized water and a peptizing agent to obtain stable and transparent vanadium pentoxide sol. According to the preparation method of the vanadium pentoxide sol disclosed by the invention, the raw material is small in toxicity and is cheap and easy to obtain, the preparation process is simple, the cost is low, the reaction conditions are mild, the product stability is good, and such problems generally existing in traditional preparation methods of vanadium pentoxide sol as high cost, operation difficulty, and the like are solved, so that the preparation method has a great application value.

Description

technical field [0001] The invention belongs to the field of inorganic functional materials and relates to a preparation method of vanadium pentoxide sol. Background technique [0002] Oxides of transition metal vanadium have attracted more and more attention due to their excellent optical, electrical and magnetic properties. The interaction between vanadium and oxygen can form more than ten kinds of oxides, among which, vanadium pentoxide (V 2 o 5 ) has excellent properties such as heat sensitivity, gas sensitivity, and electrochromism due to its unique structural characteristics. materials etc. The application research of vanadium pentoxide in many fields above is based on thin film materials, so it is very important to prepare vanadium pentoxide thin films with excellent performance [1-3] . [0003] At present, the commonly used methods for preparing vanadium pentoxide thin films include magnetron sputtering, chemical vapor deposition, pulsed laser deposition and so...

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
IPC IPC(8): C01G31/02
Inventor 曹文斌王法国李尧陈鹏万金海波
Owner UNIV OF SCI & TECH BEIJING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com