Supercharge Your Innovation With Domain-Expert AI Agents!

Catalyst for hydrogenation of dimethyl oxalate to methyl glycolate and ethylene glycol and preparation method thereof

A technology of methyl glycolate and dimethyl oxalate, which is applied in the direction of carboxylate preparation, catalyst carrier, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of low mechanical strength of catalyst and poor performance of hydrogenation reaction , poor stability and other issues

Active Publication Date: 2018-09-04
SHANGHAI HUAYI GRP CO
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is the problem of poor stability, low catalyst mechanical strength and poor hydrogenation reaction performance in the prior art, and a new hydrogenation of dimethyl oxalate to methyl glycolate is provided and ethylene glycol catalyst

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 hydrogenation of dimethyl oxalate to methyl glycolate and ethylene glycol and preparation method thereof
  • Catalyst for hydrogenation of dimethyl oxalate to methyl glycolate and ethylene glycol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 700g of calcium nitrate tetrahydrate, 600g of white carbon black and 2000g of water and mix evenly. The above mixture continues to stand for 1 hour and then dried at 130°C for 8 hours. The dried solid is roasted in a muffle furnace at 650°C for 4 hours to obtain the required carrier. Weigh 64.0g of silver nitrate and dissolve it in 1100g of water to prepare solution R1, then add the above carrier for impregnation, let stand at room temperature for 2 hours and then dry at 130°C for 10 hours; the dried solid is calcined at 500°C for 4 hours. The solid obtained after calcination was pressed into a cylinder by a tablet machine, with a size of 5*5mm. The pressure test strength of the solid catalyst after forming was 110-160N / cm, and the obtained catalyst was numbered C1.

[0030] The above hydrogenation catalyst is used for hydrogenation of dimethyl oxalate to produce methyl glycolate and ethylene glycol. The reduction temperature is 100°C, the reduction pressure is 0....

Embodiment 2

[0034] Weigh 1200g of calcium nitrate tetrahydrate, 550g of white carbon black and 2000g of water and mix evenly. After the above mixture is left to stand for 1 hour, it is dried at 120°C for 8 hours. The dried solid is roasted in a muffle furnace at 650°C for 4 hours to obtain the required carrier. Weigh 180.0g of silver nitrate and dissolve it in 2000g of water to prepare solution R1, then add the above-mentioned carrier for impregnation, filter out the excess mother liquor after standing at room temperature for 2 hours, and then dry at 130°C for 10 hours; the dried solid is in Baking at 500°C for 4 hours. The solid obtained after roasting is compressed into a cylinder by a tablet machine, and the size is 5*5mm. The pressure test strength of the solid catalyst after molding is 130-162 N / cm, and the obtained catalyst number is C2.

[0035] The above-mentioned hydrogenation catalyst is used for the hydrogenation of dimethyl oxalate to produce methyl glycolate and ethylene gl...

Embodiment 3

[0037] Weigh 1400g of calcium nitrate tetrahydrate, 500g of white carbon black and 1900g of water and mix evenly. The above mixture continues to stand for 2 hours and then dried at 135°C for 8 hours. The dried solid is roasted in a muffle furnace at 660°C for 4 hours to obtain the required carrier. Weigh 148.0g of silver nitrate and dissolve it in 1000g of water to prepare solution R1, then add the above carrier for impregnation, let stand at room temperature for 2 hours and then dry at 140°C for 8 hours; the dried solid is calcined at 480°C for 6 hours. Weigh 18g of copper nitrate and dissolve it in 600g of water to prepare solution R2, repeat the impregnation, drying and roasting steps of R1 to form a solid into a cylinder with a size of 5*5mm. The pressure test strength of the solid catalyst after molding is 136-178 N / cm, and the obtained catalyst number is C3.

[0038] The above hydrogenation catalyst is used for hydrogenation of dimethyl oxalate to produce methyl glycola...

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a catalyst for preparing methyl glycolate and ethylene glycol through dimethyl oxalate hydrogenation and a preparation method thereof. The problems that in the prior art, stability is poor, the mechanical strength of the catalyst is low, and hydrogenation reaction performance is poor are mainly solved. The catalyst for preparing methyl glycolate and ethylene glycol through dimethyl oxalate hydrogenation is adopted, the technical scheme of the preparation method of the catalyst well solves the problems, and the catalyst can be used for preparing methyl glycolate and ethylene glycol through dimethyl oxalate hydrogenation.

Description

technical field [0001] The invention relates to a catalyst for hydrogenating dimethyl oxalate to prepare methyl glycolate and ethylene glycol and a preparation method thereof. Background technique [0002] Methyl glycolate is an excellent solvent for many celluloses, resins, and rubbers. It can also be used as an important chemical reaction intermediate and is widely used in organic synthesis and drug synthesis. Ethylene glycol is a widely used polyester raw material and refrigerant, and has a very broad market. In recent years, breakthroughs have been made in the synthesis of dimethyl oxalate in the C1 chemical route, and industrial production has been successfully realized. Therefore, under the condition that the upstream dimethyl oxalate synthesis technology is becoming more and more stable, it is more feasible and better to further expand the downstream chain of oxalate and develop the hydrogenation of dimethyl oxalate to methyl glycolate and ethylene glycol. economic ...

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 Patents(China)
IPC IPC(8): B01J23/66B01J23/89B01J32/00C07C69/675C07C67/31C07C31/20C07C29/149
CPCY02P20/52
Inventor 廖湘洲万富苗徐烨卢磊宁春利李永刚张春雷
Owner SHANGHAI HUAYI GRP CO
Features
  • R&D
  • 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