Method for preparing stannic oxide by dissolution pyrolysis method

A technology of tin oxide and heat of solution, applied in the direction of tin oxide, etc., can solve the problems of powder particle growth, large amount of organic matter, solution temperature and atmosphere pressure, etc.

Inactive Publication Date: 2006-07-19
HENAN NORMAL UNIV
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solid phase reaction method and mechanical pulverization method are difficult to produce uniform ultrafine particles, which cannot be used in production. Metal salt decomposition method is to decompose organic tin salt at high temperature to obtain tin oxide powder. The shape and size of the prepared micropowder depend on the parent group In addition to its characteristics and characteristics, it is also affected by the decomposition tem...

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Weigh 5g of tin source (AR), take 10g of acetic acid (AR) according to the mass ratio of 5:10, add the two raw materials into the reactor, control the temperature at 20°C, stir and react for 120h to obtain a milky white precursor, filter out a small amount After the undissolved metal tin, the precursor is transferred to a drying oven at 50°C for drying, and the dried sample is placed in a muffle furnace for calcination at 280°C for 8 hours to obtain a white tin oxide product.

[0010] The maximum dissolved mass of tin in the precursor is no more than 1 / 2 of the total mass of acetic acid added, and the added amount is determined accordingly.

Embodiment 2

[0012] Weigh 5 g of tin source (AR), take 10 g of acetic acid (AR) according to the mass ratio of 5:10, add the two raw materials into the reactor, control the temperature at 100 ° C, and stir for 1 h to obtain a yellow precursor. After dissolving metal tin, wash the precursor with water or ethanol and put it in a drying oven to dry at 58°C. The dried sample is put into a muffle furnace for calcination at 700°C for 0.2 hours to obtain a mixed-valence tin oxide product. The performance of this tin oxide product is better than that of single valence tin oxide product in specific application.

Embodiment 3

[0014] Weigh 5g of tin source (AR), take 12.5g of tartaric acid (AR) according to the mass ratio of 4:10, add the two raw materials into the reactor, control the temperature at 180°C, stir and react for 240h to obtain a brown precursor, filter out After a small amount of undissolved metal tin, the precursor is transferred to a drying oven at 100°C for drying, and the dried sample is placed in a muffle furnace for calcination at 400°C for 8 hours to obtain a white tin oxide 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 discloses a method to prepare tin oxide by dissolving pyrolysis, which comprises: dissolving the tin source and organic acid in reactor at 20-290Deg; stirring and reacting for 0.1-240h to obtain the predecessor; putting the predecessor into muffle furnace for calcining and pyrolysis at temperature more than 280Deg to obtain the product. Wherein, selecting on organic acid arbitrarily from the acetic acid, oxalic acid, citric acid, tartaric acid or aconitic acid; between the dissolution and pyrolysis, using any one of water, alcohol, ethyl ether, acetone or chloroform to clear the predecessor. This invention is simple and low cost, and has high purity.

Description

technical field [0001] The invention relates to a method for preparing functional materials, in particular to a method for preparing tin oxide by dissolution and pyrolysis. Background technique [0002] Tin oxide is the most widely used gas-sensing material so far. It has the characteristics of low price, good mechanical, chemical and thermal stability, and fast response speed, and the selectivity to gas can be adjusted by doping different elements. The special pores in the structure of tin oxide can be suitable for the transport of ions in it, so it can be used as an anode material for lithium-ion batteries. Tin oxide is a good catalyst and catalyst carrier. It has a strong complete oxidation ability and has a good effect on the oxidation of organic matter. It can catalyze the fumarate reaction and the oxidation of CO. Tin oxide has excellent optoelectronic properties and can be used to make transparent electrodes, solar energy conversion materials, conductive materials, e...

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): C01G19/02
Inventor 娄向东王晓兵彭传云
Owner HENAN NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap