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

Titanium dioxide matrix composite/Lewis acid composition suitable for preparing allantoin and preparation method thereof

A technology of titanium dioxide and Lewis acid, applied in the field of allantoin, can solve the problems of not very superior catalytic effect, low allantoin yield, equipment corrosion, etc.

Inactive Publication Date: 2018-11-06
茆振斌
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing catalysts are generally inorganic strong acids. As a catalyst, inorganic strong acids will cause corrosion to equipment and pollute the environment; what is more important is that the catalytic effect of inorganic strong acid catalysts is not very superior, resulting in a generally low yield of allantoin

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

preparation example Construction

[0017] The invention provides a preparation method of a titanium dioxide-based composite / Lewis acid composition suitable for preparing allantoin, comprising:

[0018] 1) Mix tetrabutyl titanate, graphene, dimethylformamide and ethanol to form solution A;

[0019] 2) Mix water, ethanol and acetic acid to form solution B;

[0020] 3) Mix copper salt, zinc salt, silver salt, water and ethanol to form solution C;

[0021] 4) Add solution B and solution C dropwise to solution A at the same time, then stand, dry and grind to obtain a powder object;

[0022] 5) calcining the powder object to obtain a titanium dioxide-based composite solid catalyst;

[0023] 6) Soak the titanium dioxide-based composite solid catalyst, zinc chloride, and niobium pentachloride in hydrochloric acid, and then dry to obtain a titanium dioxide-based composite / Lewis acid composition.

[0024] In step 1) of the present invention, the amount of each material can be in a wide range, but in order to further i...

Embodiment 1

[0038] 1) Mix tetrabutyl titanate, graphene, dimethylformamide, and ethanol in a weight ratio of 20:8:50:60 (the mixing temperature is 25°C, and the mixing time is 50 minutes) to form solution A;

[0039] 2) Mix water, ethanol and acetic acid in a weight ratio of 5:23:2.5 (mixing temperature is 25°C, mixing time is 50min) to form solution B;

[0040] 3) Mix copper salt (copper sulfate), zinc salt (zinc sulfate), silver salt (silver nitrate), water and ethanol in a weight ratio of 10:3:0.5:23:18 (mixing temperature is 25°C, mixing time 50min) to form solution C;

[0041] 4) Add solution B and solution C dropwise to solution A at the same time (the volume ratio of solution A, solution B, and solution C is 100:23:10), and then let it stand (the standstill temperature is 15°C, and the standstill time is 100:23:10). 20h), drying (drying temperature is 105°C, drying time is 8h), grinding to obtain powder objects;

[0042] 5) The powder object is calcined (from 25°C to 330°C at 2.3...

Embodiment 2

[0044]1) Mix tetrabutyl titanate, graphene, dimethylformamide, and ethanol at a weight ratio of 20:5:40:50 (mixing temperature is 15°C, mixing time is 60 minutes) to form solution A;

[0045] 2) Mix water, ethanol and acetic acid in a weight ratio of 5:20:2 (mixing temperature is 15°C, mixing time is 60 minutes) to form solution B;

[0046] 3) Mix copper salt (copper chloride), zinc salt (zinc chloride), silver salt (silver nitrate), water, and ethanol in a weight ratio of 10:2:0.2:20:15 (mixing temperature is 15°C, The mixing time is 60min) to form solution C;

[0047] 4) Add solution B and solution C dropwise to solution A at the same time (the volume ratio of solution A, solution B and solution C is 100:20:8), and then stand still (the stand temperature is 10°C, and the stand time is 24h), drying (drying temperature is 100°C, drying time is 10h), grinding to obtain powder objects;

[0048] 5) The powder object was calcined (from 15°C at 2°C / min to 300°C and held for 30 mi...

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 titanium dioxide matrix composite / Lewis acid composition suitable for preparing allantoin and a preparation method thereof, wherein the preparation method comprises the following steps of: 1) mixing tetrabutyl titanate, graphene, dimethylformamide and ethanol to form solution A; 2) mixing water, ethanol and acetic acid to form solution B; 3) mixing copper salts, zinc salts, silver salts, water and ethanol to form solution C; 4) simultaneously dripping the solution B and the solution C into the solution A, standing, drying and grinding to obtain powder object; 5) calcining the powder object to prepare a titanium dioxide matrix composite solid catalyst; 6) soaking the titanium dioxide matrix composite solid catalyst, zinc chloride and niobium pentachloride in hydrochloric acid, and then drying to obtain the titanium dioxide matrix composite / Lewis acid composition. The composite / Lewis acid composition has excellent catalytic effect on the synthesis of allantoin.

Description

technical field [0001] The present invention relates to allantoin, in particular, to a titanium dioxide-based composite / Lewis acid composition suitable for preparing allantoin and a preparation method thereof. Background technique [0002] Allantoin, English name Allantion, chemical name 1-ureido-m-diazepine-2,4-dione, is an important fine chemical product with a wide range of uses. Allantoin has physiological functions such as promoting the growth of skin epithelial cells, healing sores, relieving pain, softening keratin, and it is non-toxic, non-irritating, non-allergic, light-proof, bactericidal, antiseptic, and antioxidant, and can keep the skin hydrated , moisturizing and soft, so it is widely used in the production of medicine and cosmetics. In addition, allantoin also has the function of stimulating biological growth, and can be used as a plant growth regulator in agricultural production, with the effects of fruit-setting, ripening, and yield increase. [0003] Na...

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): B01J27/138C07D233/88
CPCC07D233/88B01J27/138B01J27/10B01J23/8953B01J35/19
Inventor 茆振斌
Owner 茆振斌
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