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

Catalyst for catalyzing hydroxyaldehyde hydrogenation to prepare polyol and preparation and application methods of catalyst

An application method and catalyst technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve problems such as environmental hazards, and achieve the effects of less Cu content, good stability, and simple preparation methods

Active Publication Date: 2021-08-27
HEBEI UNIV OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the copper chromium catalyst used in it will cause great harm to 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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for catalyzing hydroxyaldehyde hydrogenation to prepare polyol and preparation and application methods of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Weigh 2.18g (9mmol, containing Cu 0.58g) Cu(NO 3 ) 2 ·3H 2 O and 5.35g (18mmol) Zn(NO 3 ) 2 ·6H 2 O, and the two were dissolved in 30mL deionized water;

[0043] (2) Weigh trimesic acid (H 3 BTC) (5mmol, 1.1g), and it was dissolved in 30mL absolute ethanol;

[0044] (3) Weigh 6g of 40-60 mesh shaped SiO 2 ;

[0045] (4) Mix the solutions obtained in steps (1) and (2) to obtain a suspension, and form SiO 2 added to the suspension;

[0046] (5) Transfer the mixture obtained in step (4) to a polytetrafluoroethylene-lined crystallization kettle, and react at 150° C. for 6 hours;

[0047] (6) The reaction mixture was taken out from the crystallization kettle, centrifuged, and the obtained solid was washed with deionized water, and then dried at 80° C. for 12 hours;

[0048] (7) the solid that step (6) obtains is put into tube furnace, under N 2 In the atmosphere, calcination at 400°C for 5 hours to obtain shaped SiO 2 Supported CuZn@C catalyst, denoted as Cu...

Embodiment 2-4

[0050] The same as the preparation method of Example 1, just change the Cu-containing precursor compound and the consumption in step (1) to be 1.44g copper sulfate, 1.21g cupric chloride and 1.80g copper acetate monohydrate, respectively, to obtain Example 2- 4 CuZn@C / SiO 2 catalyst.

[0051] CuZn@C / SiO prepared in embodiment 1-4 2 The catalyst is used in the reaction of hydrogenation of hydroxyaldehyde to polyols: 20ml of catalyst is loaded in a stainless steel tubular reactor with an inner diameter of 20mm, the reaction raw material is ethylbenzene solution of hydroxyaldehyde, the concentration of hydroxyaldehyde is 10wt%, and the reaction conditions are as follows: Hydrogen ketone moles Ratio 10:1, liquid hourly space velocity 0.4g (hydroxy aldehyde) g (catalyst) -1 h -1 , The reaction temperature is 80°C, and the reaction pressure is 2.5MPa. Under these conditions, the hydrogenation reaction of hydroxy aldehydes is carried out to obtain polyols.

[0052] Analysis of re...

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 catalyst for catalyzing hydroxyaldehyde hydrogenation to prepare polyol as well as preparation and application methods of the catalyst. The catalyst comprises carrier molding SiO2, an active component Cu compound and an auxiliary agent Zn compound, wherein the weight ratio of Cu to SiO2 in the Cu compound is (2-10):100; the ratio of the amount of substance of Cu in the Cu compound to the amount of substance of Zn in the Zn compound is 1:(0.5-6). The preparation method of the heterogeneous formed SiO2 loaded CuZn C catalyst is simple, easy to operate and high in repeatability; and the catalyst is high in activity, good in stability, long in service life, high in selectivity and capable of remarkably inhibiting side reactions in the reaction process.

Description

technical field [0001] The present invention relates to a kind of heterogeneous phase Cu series catalyst and its preparation and application method, specifically, relate to a kind of catalyst for hydroxy aldehyde (such as, hydroxypivalaldehyde, 2,2-dimethylol butyraldehyde) Heterogeneous Forming of SiO by Hydrogen Preparation of Polyols 2 Supported CuZn@C catalyst and its preparation method. Background technique [0002] Polyol is an important chemical intermediate, widely used in alkyd resin, polyester resin, explosives and other industrial products, as well as synthetic dry oil, adhesive, plasticizer, surfactant and other fields. The synthesis methods of polyols include microbial fermentation and organic synthesis. Microbial fermentation generally uses organic amino acids or proteins as raw materials to produce polyols through microbial fermentation. The raw materials used in this method are expensive, the production cost is high, and it is not suitable for large-scale ...

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): B01J23/80B01J37/08B01J37/10C07C29/141C07C31/20C07C31/22
CPCB01J23/80B01J37/10B01J37/086C07C29/141C07C31/20C07C31/22
Inventor 吕建华刘继东薛伟
Owner HEBEI UNIV OF TECH
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