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

Method for preparing titanium dioxide through plant acid hydrolysis

A technology of titanium dioxide and plant acid, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of large environmental pollution, reduced weather resistance, and consumption of sulfuric acid, and achieve the effects of simple preparation process, low cost, and environmental protection

Active Publication Date: 2016-01-20
安徽省金寨县世隆生物科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: the sulfuric acid method mainly uses concentrated sulfuric acid as a reactant to prepare titanium dioxide. The titanium dioxide prepared by this method is prone to loss of light, yellowing, and discoloration, resulting in reduced weather resistance, and consumes a large amount of sulfuric acid at the same time. It is very polluting to the environment, and a method for preparing titanium dioxide by plant acid hydrolysis is provided. The present invention mainly processes the high-concentration artemisinic acid solution obtained by treating Artemisia annua, and mixes and stirs it with titanium concentrate particles, passes through polyacrylamide Flocculation, rotary evaporation, heating, drying and other steps are used to prepare titanium dioxide. The titanium dioxide prepared by the present invention has stable crystal lattice and good dispersibility. of sulfuric acid, which can protect the environment

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

example 1

[0021]First, select fresh Artemisia annua and cut off the root, wash it with water, and expose it to the sun for 5 days, then dry it in an oven at 70°C for 24 hours, and after it is dried, grind it through a jet mill and grind it. Sieve to obtain 80 mesh Artemisia annua powder, then mix the Artemisia annua powder with 60% methanol in a mass ratio of 1:10, extract for 8 hours, collect the filtrate, repeat the extraction for 4 times, combine the filtrate and It is evaporated and concentrated to 1 / 2 of the original volume; then the concentrated filtrate and sodium hydroxide solution with a mass fraction of 10% are stirred and mixed for 24 hours at a mass ratio of 1:1, and adjusted by concentrated hydrochloric acid with a mass fraction of 95%. Its pH was 1.5, and after the pH adjustment was completed, the acid hydrolyzed solution of Artemisia annua was obtained, ether was added to the acid hydrolyzed solution of Artemisia annua at a volume ratio of 1:1, after shaking and mixing for...

example 2

[0023] First, select fresh Artemisia annua and cut off the root, wash it with water, and expose it to the sun for 3 days, then dry it in an oven at 60°C for 20 hours, and after it is dried, grind it through a jet mill and grind it. Sieve to obtain 60 mesh Artemisia annua powder, then mix the Artemisia annua powder and methanol with a mass fraction of 60% according to the mass ratio of 1:10, extract for 7 hours, collect the filtrate, repeat the extraction for 3 times, combine the filtrate and It is evaporated and concentrated to 1 / 2 of the original volume; then the concentrated filtrate and sodium hydroxide solution with a mass fraction of 10% are stirred and mixed for 20 hours at a mass ratio of 1:1, and adjusted by concentrated hydrochloric acid with a mass fraction of 95%. Its pH is 1.0, and after the pH adjustment is completed, the acid hydrolyzed solution of Artemisia annua is obtained, ether is added to the acid hydrolyzed solution of Artemisia annua at a volume ratio of 1...

example 3

[0025] First, cut off the roots of fresh Artemisia annua, wash them with clean water, and expose them to the sun for 4 days, then dry them in an oven at 65°C for 22 hours, and after they are dried, they are crushed by a jet mill and crushed. Sieve to obtain 65 mesh Artemisia annua powder, then mix the Artemisia annua powder and methanol with a mass fraction of 60% according to the mass ratio of 1:10, extract for 7 hours, collect the filtrate, repeat the extraction for 3 times, combine the filtrate and It is evaporated and concentrated to 1 / 2 of the original volume; then the concentrated filtrate and sodium hydroxide solution with a mass fraction of 10% are stirred and mixed for 23 hours at a mass ratio of 1:1, and adjusted by concentrated hydrochloric acid with a mass fraction of 95%. Its pH is 1.0, and after the pH adjustment is completed, the acid hydrolyzed solution of Artemisia annua is obtained, ether is added to the acid hydrolyzed solution of Artemisia annua at a volume ...

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 preparing titanium dioxide through plant acid hydrolysis and belongs to the field of chemical production. According to the method, artemisia annua is simply preprocessed first to obtain artemisia annua powder, leaching is performed to collect filtrate after the artemisia annua powder is mixed with methanol, then the filtrate is evaporated and concentrated and then is mixed with a sodium hydroxide solution, pH is regulated by using concentrated hydrochloric acid, diethyl ether is utilized to perform extraction, and an artemisinic acid solution is obtained under certain conditions, is mixed with titanium concentrate grains and then undergoes polyacrylamide flocculation, rotary evaporation, heating, drying and other steps to be made into the titanium dioxide. The method has the advantages that the titanium dioxide is stable in crystal lattice and good in dispersion and does not lose gloss, yellow or discolor under solar radiation; large amounts of sulfuric acid is not consumed, and the environment can be protected; a preparation process is simple, and the required cost is low.

Description

technical field [0001] The invention relates to a method for preparing titanium dioxide by hydrolyzing plant acids, which belongs to the field of chemical production. Background technique [0002] The chemical properties of titanium dioxide are extremely stable, and it is a slightly acidic amphoteric oxide. It hardly reacts with other elements and compounds at room temperature, and has no effect on oxygen, ammonia, nitrogen, hydrogen sulfide, carbon dioxide, and sulfur dioxide. It is insoluble in water, fat, dilute acid, inorganic acid, and alkali, and only soluble in hydrogen. Hydrofluoric acid. However, under the action of light, titanium dioxide can undergo continuous redox reactions and has photochemical activity. This kind of photochemical activity is especially obvious in anatase titanium dioxide under ultraviolet irradiation. This property makes titanium dioxide not only a photosensitive oxidation catalyst of some inorganic compounds, but also a photosensitive reduc...

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): C01G23/053
CPCC01G23/053
Inventor 高大元薛红娟
Owner 安徽省金寨县世隆生物科技有限公司
Features
  • Generate Ideas
  • 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