Method for synthesizing dimethyl carbonate

A technology of dimethyl carbonate and ethylene carbonate, which is applied in the field of synthesizing dimethyl carbonate, can solve the problems of poor catalyst activity and easy loss of active components, and achieve the effect of stable catalyst properties and not easy to lose

Active Publication Date: 2021-08-03
CHINA PETROLEUM & CHEM CORP +1
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the prior art has the problems of poor catalyst activity and easy loss of active components, and a new method for synthesizing dimethyl carbonate is provided

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
  • Method for synthesizing dimethyl carbonate
  • Method for synthesizing dimethyl carbonate
  • Method for synthesizing dimethyl carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 8.5g of magnesium nitrate hexahydrate and 7.0g of zirconium nitrate pentahydrate and dissolve them in 100ml of water, and dissolve 10g of porous SiO 2 (Degussa Aerosil 200) was added to it, heated to 90°C and evaporated to dryness, dried overnight in an oven at 120°C, and then roasted in a muffle furnace at 550°C for 4 hours to obtain the supported mixed metal oxide catalyst MO-TO 2 / SP-1, wherein the weight content of MO is 10.2%, TO 2 The weight content of the carrier SP is 14.8%, and the weight content of the carrier SP is 75.0%.

Embodiment 2

[0020] The catalyst preparation steps are the same as in [Example 1], except that the M metal salt used is 7.1g magnesium acetate tetrahydrate, and the catalyst obtained is MO-TO 2 / SP-2.

Embodiment 3

[0022] The catalyst preparation steps are the same as in [Example 1], except that the M metal salt used is 5.1 g calcium nitrate tetrahydrate, and the obtained catalyst is MO-TO 2 / SP-3.

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for synthesizing dimethyl carbonate, which mainly solves the problems of poor catalyst activity and easy loss of active components in the prior art. The present invention is by adopting to comprise under transesterification reaction condition, the step that ethylene carbonate and methyl alcohol contact with catalyzer; Described catalyzer is supported composite metal oxide catalyst MO-TO 2 / SP; M is at least one of alkaline earth metal Mg, Ca, Sr or Ba; T is at least one of Ti or Zr; SP is porous silica, SBA-15, MCM-41, MCF, HMS, oxide At least one of aluminum or activated carbon; the weight content of MO is 1-20%, TO 2 The technical scheme that the weight content of SP is 5-30%, and the weight content of SP is 50-94% solves this problem well, and can be used in the industrial production of dimethyl carbonate prepared by transesterification of ethylene carbonate and methanol.

Description

technical field [0001] The invention relates to a method for synthesizing dimethyl carbonate, in particular to a method for transesterifying ethylene carbonate and methanol to synthesize dimethyl carbonate. Background technique [0002] Dimethyl carbonate (DMC) has lively chemical properties, excellent physical properties, and is non-toxic and easy to biodegrade. Electrolyte and carbonylation, methylation and carbonyl methoxylation reagents are widely used in chemical industry. At present, all countries are actively studying the green chemical process based on DMC, an environmentally friendly chemical raw material. Among them, the transesterification method has become a method with great industrial prospects because of mild reaction conditions, high yield and co-production of ethylene glycol or propylene glycol. [0003] Generally speaking, alkali metal hydroxides, alkali metal carbonates, and alkali metal alcohols (F.Risse et al., US2011040117; C.P.Allais et al., WO201006...

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): C07C27/00C07C29/128C07C31/20C07C68/065C07C69/96B01J21/14B01J23/02B01J29/03
CPCB01J21/14B01J23/002B01J23/02B01J29/0308B01J2229/186B01J2523/00C07C29/1285C07C68/065C07C69/96C07C31/202B01J2523/22B01J2523/41B01J2523/48B01J2523/23B01J2523/25B01J2523/31
Inventor 陈梁锋何文军
Owner CHINA PETROLEUM & CHEM CORP
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