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

Preparation method of bismuth vanadate molybdate pigment

A technology of bismuth molybdovanadate and pigments, which is applied in the field of preparation of bismuth molybdovanadate pigments, can solve the problems of insufficient quality and high temperature resistance, liquid phase precipitation-calcination method consumes a lot of acid and alkali, etc., and achieves good product quality, Easy to achieve industrialization and reduce production costs

Active Publication Date: 2017-05-31
HEBEI IRON AND STEEL
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the manufacturing process of bismuth molybdovanadate pigment can be divided into direct calcination method and precipitation-calcination method. The bismuth molybdenum vanadate pigment prepared by direct calcination method is slightly insufficient in quality and high temperature resistance, while the liquid phase precipitation-calcination method There are difficult problems in which a large amount of acid and alkali are consumed

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 bismuth vanadate molybdate pigment
  • Preparation method of bismuth vanadate molybdate pigment
  • Preparation method of bismuth vanadate molybdate pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Weigh 40g grade 99.95wt% NH 4 VO 3 , 199.2gBi 2 o 3 , 34.36gMoO 3 The materials were mixed, and 91.2 g of ethylene glycol and 1.4 g of surfactant were added to the mixture, followed by ball milling and filtering after 60 min of ball milling. After filtration, it is roasted in a muffle furnace. First, the temperature is raised to 180°C at a rate of 3.5°C / min, and kept for 80 minutes; then the temperature is raised to 550°C at a rate of 2.5°C / min, and kept for 8 hours. Then continue to raise the temperature in the muffle furnace to 1100°C at a heating rate of 4°C / min, and keep it for 5 hours; then cool it down to 960°C at a rate of 5°C / min, and hold it for 8 hours. A BiVO with composite structure was prepared 4 0.75Bi 2 MoO 6 product.

Embodiment 2

[0070] Weigh 45g grade 99.95wt% NH 4 VO 3 , 161.3gBi 2 o 3 , 20.62gMoO 3 The materials were mixed, and 50.42 g of ethylene glycol and 2.27 g of surfactant were added to the mixture, and then ball milled, and filtered after 100 min of ball milling. After filtration, it is roasted in a muffle furnace. Firstly, the temperature is raised to 210°C at a rate of 3.3°C / min and kept for 100 minutes; then the temperature is raised to 580°C at a rate of 2.7°C / min and kept for 9 hours. Then continue to raise the temperature in the muffle furnace to 1050°C at a rate of 3.8°C / min, and keep it for 6 hours; then cool it down to 900°C at a rate of 5.2°C / min, and keep it for 6 hours. A BiVO with composite structure was prepared 4 0.4Bi 2 MoO 6 product.

Embodiment 3

[0072] Weigh 50g grade 99.95wt% NH 4 VO 3 , 139.4gBi 2 o 3 , 11.45gMoO 3 The materials were mixed, and 33.5 g of ethylene glycol solution and 4.07 g of surfactant were added to the mixture, and then ball milled, and filtered after 30 minutes of ball milling. After filtration, it is roasted in a muffle furnace. Firstly, the temperature is raised to 240°C at a rate of 4°C / min, and kept for 120 minutes; then, the temperature is raised to 600°C at a rate of 2°C / min, and kept for 11 hours. Then continue to raise the temperature in the muffle furnace to 1200°C at a rate of 4.5°C / min, and keep it for 3h; then cool it down to 1000°C at a rate of 4.5°C / min, and keep it for 4h. A BiVO with composite structure was prepared 4 0.2Bi 2 MoO 6 product.

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 provides a preparation method of a bismuth vanadate molybdate pigment, comprising the following steps: pretreatment of raw materials; primary calcination of the pretreated raw materials to obtain a precursor; and secondary calcination of the precursor to obtain the bismuth vanadate molybdate pigment. Calcination is performed twice in four steps, and after the raw materials are subjected to low temperature calcination for setting, high temperature calcination and curing, the bismuth vanadate molybdate pigment with good quality and high temperature resistance is obtained. The method provided by the invention avoids the problem of consumption of large amounts of acid and alkali in a liquid phase settling-calcination method, and is favorable for reducing the production cost; and the preparation process is simple, safe and easy to be industrialized.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to the preparation of inorganic pigments, in particular to a preparation method of bismuth molybdovanadate pigment. Background technique [0002] Bismuth vanadate (abbreviated as 184 yellow) is an important inorganic yellow pigment with non-toxic, bright color and stable chemical properties. It has been used in advanced inks, automotive topcoats, advanced architectural coatings and other fields. In addition, bismuth vanadate, as a semiconductor material with a narrow band gap (Eg=2.4eV), has good oxygen production activity under visible light irradiation, and is a new type of photocatalyst, which can kill Escherichia coli, golden yellow Staphylococcus, Klebsiella pneumoniae, Pseudomonas aeruginosa, viruses, etc.; in addition, bismuth vanadate is also used in office or home environments to decompose organic compounds and toxic substances in the air, such as benzene, formaldehyde, amm...

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): C04B35/495C04B35/626
CPCC04B35/495C04B35/62605C04B2235/3298C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/661C04B2235/782C04B2235/786C04B2235/94
Inventor 王海旭李兰杰王少娜刘彪赵亮周欣
Owner HEBEI IRON AND STEEL
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