Unlock instant, AI-driven research and patent intelligence for your innovation.

Chelating type porous catalyst for synthesizing carbonic acid dialkyl ester by liquid-phase oxidative carbonylation, and preparation method of chelating type porous catalyst

A technology of dialkyl carbonate and porous catalyst is applied in the preparation of organic compounds, organic compound/hydride/coordination complex catalysts, carbonate/haloformate preparation, etc., to reduce corrosion, strengthen Solid loading effect, reducing catalyst loss effect

Inactive Publication Date: 2015-05-13
SICHUAN HONGZHENG TECH
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of solution often only solves the immobilization of metal active components, but usually does not use Schiff base additives, which cannot fundamentally solve the problem

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
  • Chelating type porous catalyst for synthesizing carbonic acid dialkyl ester by liquid-phase oxidative carbonylation, and preparation method of chelating type porous catalyst

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033]Weigh 100g of Al(OH)(bpydc) (MOF-253) powder microcrystal, stir and disperse in 1000g of methanol at 25°C, dissolve 35.4g of anhydrous CuCl 2 Add the powder slowly, and carry out the metal ion coordination reaction under the condition of stirring; continue to stir for 1 hour after adding all the raw materials; put the solid obtained by filtration into a vacuum oven, and dry it at 200°C and 0.5mmHg vacuum for 8 hours, and finally obtain 134.6g catalyst.

example 2

[0035] Weigh 100g of Al(OH)(bpydc) (MOF-253) powder microcrystals, stir and disperse in 1000g of ethanol at 35°C, slowly add 26g of anhydrous CuCl powder, and carry out metal ion coordination reaction under stirring conditions ; Continue stirring for 3h after adding all raw materials. The solid obtained by filtration was put into a vacuum oven, and dried at 175° C. and 3 mmHg vacuum for 20 h to finally obtain 125.2 g of catalyst.

example 3

[0037] Weigh 100g of Al(OH)(bpydc) (MOF-253) powder microcrystals, stir and disperse in 1000g of butyl acetate at 40°C, slowly add 30g of anhydrous CuCl powder, and carry out metal ion complexation under stirring conditions. After adding all the raw materials, continue to stir for 2 hours; put the solid obtained by filtration into a vacuum oven, and dry at 150° C. and 5 mmHg vacuum for 24 hours to finally obtain 121.6 g of catalyst.

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 chelating type porous catalyst for synthesizing carbonic acid dialkyl ester by liquid-phase oxidative carbonylation, and a preparation method of the chelating type porous catalyst. The chelating type porous catalyst comprises a copper compound and an MOFs porous material having a tooth-shaped Schiff alkali functional-group structure, wherein the copper compound and the Schiff alkali functional-group structure are combined together through metal organic coordination bonds. The preparation method of the chelating type porous catalyst comprises the following steps: placing the microcrystalline powder of the MOFs porous material having a tooth-shaped Schiff alkali functional-group structure in a solvent under a temperature of 0-100 DEG C, stirring the microcrystalline powder and the solvent for suspension and dispersion, and slowly adding the copper compound; after adding the copper compound, continuing to stir the mixture for 1-3h; after the reaction, performing filtering separation on the mixed liquid, and performing vacuum drying on the separated solid substances under the condition of 150-200 DEG C, wherein the vacuum range is 0.5-5mmHg. The chelating type porous catalyst fundamentally avoids the phenomenon that the ligand of the catalyst is carried by high-airspeed process gases under the premise of keeping or improving activity selectivity. Therefore, the requirements for massive industrial production are satisfied.

Description

technical field [0001] The invention relates to the technology in the field of catalysts, and in particular provides a chelate-type porous catalyst for synthesizing dialkyl carbonate by liquid-phase oxidative carbonylation and a preparation method thereof. Background technique [0002] Dialkyl carbonate represented by dimethyl carbonate (Dimethyl Carbonate, DMC) is an important class of green chemicals. Not only does it have an excellent dissolving ability for various organic substances, but it can also form mixed solvents with various alcohols, ethers, and ketones in any proportion. It is particularly noteworthy that the mixed product of transesterification reaction between dimethyl carbonate and low-carbon alcohols such as butanol can adjust the boiling point by adjusting the degree of transesterification, and the temperature range can completely cover triphenyl and cyclohexanone, etc. Traditional toxic and harmful solvents form a series of cleaning alternatives in a wide...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C68/00C07C69/96
Inventor 王越
Owner SICHUAN HONGZHENG TECH