Method of using membrane distributor to greenly prepare cuprous oxide with controllable morphology

A technology of cuprous oxide and distributor, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems of increasing cost, difficult to form particles, poisonous and other problems, and achieve the effect of low cost, easy enlargement and simple operation

Inactive Publication Date: 2018-10-16
NANJING UNIV OF TECH
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are still some problems in the preparation process of cuprous oxide with different structures, such as: (1) some synthetic routes will use toxic reducing agents or organic solvents such as hydrazine hydrate, hydroxylamine hydrochloride, sodium borohydride, etc.; (2) ) A large number of surfactants such as PVP, SDS, CTAB, etc. are often used in the regulation process of different morphologies, which will cause certain pollution to the environment in the subsequent separation and washing process; (3) in the preparation of Cu 2 In the process of O powder, due to the uneven mixing of the reaction system and the influence of local supersaturation, the particle size and shape of the product will be messy, and it is diffi

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 of using membrane distributor to greenly prepare cuprous oxide with controllable morphology
  • Method of using membrane distributor to greenly prepare cuprous oxide with controllable morphology
  • Method of using membrane distributor to greenly prepare cuprous oxide with controllable morphology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Configure continuous phase solution 180mL (copper sulfate pentahydrate concentration 0.09mol / L, sodium carbonate concentration 0.12mol / L, sodium citrate concentration 0.036mol / L), glucose solution 180mL, concentration 0.14mol / L, in magnetic stirring Under the action of the glucose solution, the glucose solution is passed into the membrane tube through the high-pressure infusion pump, and the permeation flux of glucose as the dispersed phase is 0.75m 3 m -2 h -1 , through the pores of the membrane to disperse into tiny droplets to mix and react with the continuous phase, the stirring rate is 600r / min, stop stirring after feeding, control the reaction temperature to 70°C, and the reaction and aging time to 60min. After the end, the product was washed with deionized water and absolute ethanol, and dried in a vacuum oven at 60°C for 5 hours to obtain the product Cu 2 O, its scanning electron microscope photo is shown in figure 2 , it can be seen from the figure that the...

Embodiment 2

[0035] Configure continuous phase solution 180mL (copper sulfate pentahydrate concentration 0.05mol / L, potassium carbonate concentration 0.06mol / L, potassium citrate concentration 0.072mol / L), glucose solution 180mL, concentration 0.1mol / L, in magnetic stirring Under the action of the glucose solution, the glucose solution is passed into the membrane tube through the high-pressure infusion pump. The permeation flux of the glucose as the dispersed phase is 0.2m3 m-2 h-1, which is dispersed into tiny droplets and continuous The phases were mixed and reacted at a stirring rate of 400 r / min, and the stirring was stopped after the feeding was completed, the reaction temperature was controlled at 60° C., and the reaction and aging time was 60 min. After the end, the product was washed with deionized water and absolute ethanol, and dried in a vacuum oven at 75°C for 2 hours to obtain the product Cu2O, see image 3 , it can be seen from the figure that the prepared Cu2O has a cubic st...

Embodiment 3

[0037] Configure continuous phase solution 180mL (concentration of copper nitrate is 0.068mol / L, concentration of sodium hydroxide is 0.16mol / L, concentration of sodium citrate is 0.072mol / L), glucose solution 180mL, concentration is 0.14mol / L, in a magnetically stirred Under the action, the glucose solution is passed into the membrane tube through the high-pressure infusion pump. The permeation flux of glucose as the dispersed phase is 1.1m3·m-2·h-1, and it is dispersed into tiny droplets and continuous phase through the membrane pores. Mix and react, the stirring rate is 800r / min, stop stirring after feeding, control the reaction temperature to 80°C, and the reaction and aging time to 60min. After the end, the product was washed with deionized water and absolute ethanol, and dried in a vacuum oven at 60°C for 5 hours to obtain the product Cu2O, see Figure 4 , it can be seen from the figure that the prepared Cu2O has a truncated octahedral structure, the particle size is about...

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 of using a membrane distributor to greenly prepare cuprous oxide with controllable morphology. The method comprises: using a raw material (mixture of copper salts, alkali sources and citrates) of cuprous oxide as a continuous phase and the reducing agent glucose as a disperse phase, passing the disperse phase through membrane holes at a certain rate into the continuous phase, allowing reacting to form cuprous oxide particles of specific morphology, filtering, washing, and drying to obtain cuprous oxide powder. The method has the advantages that cuprous oxide particles having different morphologies, such as sphere, cuboid, truncated octahedron, octahedron and octangle, and different particle sizes can be prepared just by adjusting reaction material concentration; the reaction solution is quickly and efficiently mixed in micro drop form via a membrane dispersion technique, mass transfer is enhanced, the product has uniform and regular particle size and morphology; using high-price surfactants and toxic reducing agents or organic solvents is not required; the method features good operational convenience, greenness, safety, good amplifying convenienceand the like.

Description

technical field [0001] The invention relates to a method for preparing cuprous oxide, in particular to a method for greenly preparing cuprous oxide with controllable morphology by a membrane distributor. Background technique [0002] As an important inorganic chemical raw material, cuprous oxide is widely used in various fields of industrial production, such as ship bottom antifouling, catalysis, ceramic colorant, electronics industry, etc. Due to the different morphology Cu 2 O has different physical and chemical properties, and Cu with controllable morphology 2 The preparation of O has become a research hotspot. [0003] At present, there are still some problems in the preparation process of cuprous oxide with different structures, such as: (1) some synthetic routes will use toxic reducing agents or organic solvents such as hydrazine hydrate, hydroxylamine hydrochloride, sodium borohydride, etc.; (2) ) A large number of surfactants such as PVP, SDS, CTAB, etc. are often...

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): C01G3/02
CPCC01G3/02C01P2002/72C01P2004/03C01P2004/61C01P2004/62
Inventor 邢卫红康琳徐南平
Owner NANJING UNIV OF TECH
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