Prepn process of 3-hydroxy propionate and propylene glycol

A technology of hydroxypropionate and propylene glycol, which is applied in the field of preparing 3-hydroxypropionate and 1, can solve the problems of low hydrogenation product yield and no prospect of enlargement, and achieve the improvement of reaction activity and selectivity, selectivity and Strong stability and low production cost

Inactive Publication Date: 2007-08-22
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF8 Cites 53 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the yield of hydrogenation products is low, and there is no prospect of enlargement

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
  • Prepn process of 3-hydroxy propionate and propylene glycol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In a 1-liter high-pressure stainless steel reactor, add 450 mL of methanol, Co 2 (CO) 8 5.0g, quinoline 3.5mL, water 6mL, H 2 0.5MPa. At room temperature, fill CO gas with a pressure of 4.0 MPa, 120 g of ethylene oxide, keep the reaction temperature at 65°C-75°C, and the reaction pressure at 5.5MPa, and react for 6 hours. The solution contains 16% by weight of methyl 3-hydroxypropionate, and the selectivity is 89.5%.

Embodiment 2

[0038] Add 450 mL of methanol, Co 2 (CO) 8 5.0g, isoquinoline 3.5mL, water 7.0mL, H 2 0.5MPa. At room temperature, fill CO gas with a pressure of 4.0 MPa, 120 g of ethylene oxide, keep the reaction temperature at 65-75° C., and the reaction pressure at 5.5 MPa, and react for 6 hours. The selectivity of methyl 3-hydroxypropionate is 88%, methyl acrylate is 7.2%, ethylene glycol monomethyl ether is 0.5%, and others are 2.0%.

Embodiment 3

[0040] Add 450 mL of methanol, Co 2 (CO) 8 5.0g, 8-hydroxyquinoline 4.2g, H 2 0.5MPa. At room temperature, fill CO gas with a pressure of 4.0 MPa, 120 g of ethylene oxide, keep the reaction temperature at 65°C-75°C, and the reaction pressure at 5.5MPa, and react for 6 hours. There was a small amount of precipitation in the reaction mixture, about 1.9 g, the selectivity of methyl 3-hydroxypropionate was 60.7%, methyl acrylate was 16.6%, ethylene glycol monomethyl ether was 5.9%, and others were 16.8%.

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 present invention is process of preparing 3-hydroxy propionate and 1, 3-propylene glycol with epoxide as material. The present invention prepares 3-hydroxy propionate with epoxide, CO and alcohol under the action of cobalt catalyst and co-catalyst, and prepares 1, 3-propylene glycol under the action of 3-hydroxy propionate hydrogenating catalyst. The present invention has the advantages of simple reaction apparatus, simple operation, mild reaction condition, high catalyst activity, no environmental pollution, low production cost, etc.

Description

technical field [0001] The invention relates to a method for preparing 3-hydroxypropionate and 1,3-propanediol, in particular to using ethylene oxide as a raw material, adopting catalysts and process operating conditions suitable for hydroesterification and hydrogenation reactions, respectively Process for the preparation of 3-hydroxypropionate and 1,3-propanediol. Background technique [0002] 1,3-propanediol (i.e. 1,3-PDO) is a colorless, odorless viscous liquid, soluble in water, alcohol, ether and other organic solvents, mainly used in plasticizers, detergents, preservatives, Synthesis of emulsifiers and industries such as food, cosmetics and pharmaceuticals. Its main use is as a polymer material with excellent synthetic performance as a polymer monomer, such as replacing ethylene glycol and butanediol to produce polyol polyester. In the mid-1990s, the industry successfully developed a new type of polyester material, polytrimethylene terephthalate (abbreviated as PTT o...

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): C07C67/37C07C69/675C07C29/149C07C31/20B01J31/20B01J21/06
CPCB01J31/20C07C29/149B01J31/0235B01J37/031B01J2531/845C07C67/37B01J23/72C07C31/205C07C69/675
Inventor 陈静崔芳刘建华夏春谷童进
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap