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

A kind of catalyst for synthesizing cyclic carbonate, preparation method and preparation method of cyclic carbonate

A cyclic carbonate and catalyst technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of high cost

Active Publication Date: 2020-12-29
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst added by this method is a nano-type substance, and the cost is relatively high

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
  • A kind of catalyst for synthesizing cyclic carbonate, preparation method and preparation method of cyclic carbonate
  • A kind of catalyst for synthesizing cyclic carbonate, preparation method and preparation method of cyclic carbonate
  • A kind of catalyst for synthesizing cyclic carbonate, preparation method and preparation method of cyclic carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present embodiment prepares a kind of catalyst by following method, and structure is as follows:

[0042]

[0043] In a 250mL three-neck flask equipped with a reflux device, dissolve 0.008mol of 1H-imidazole-4-carboxylic acid and 0.5mL of hydrochloric acid (36%-38%) in 100g of water, and heat up to 70°C until the reactants are completely dissolved , and then dropwise added 0.004mol 1,2-dichloroethane, and continued to stir, and kept reflux for 24h, until no brownish-yellow solid appeared. After cooling down, filter under reduced pressure, wash with ethyl acetate, filter and dry in vacuum for 24 hours to obtain a catalyst.

Embodiment 2

[0045] The present embodiment prepares a kind of catalyst by following method, and structure is as follows:

[0046]

[0047] The preparation method refers to Example 1, only 1,2-dichloroethane is replaced by 1,2-dibromoethane.

[0048] Carbon NMR spectrum: 13 C NMR (151MHz,D 2 O) δ 136.30–136.16(m), 124.13(s), 121.85(s), 48.51–48.38(m), 35.73(s).

Embodiment 3

[0050] The present embodiment prepares a kind of catalyst by following method, and structure is as follows:

[0051]

[0052] The preparation method refers to Example 1, only 1,2-dichloroethane is replaced by 1,2-diiodoethane.

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 catalyst for synthesizing cyclic carbonate, a preparation method of the catalyst and a preparation method of the cyclic carbonate. The catalyst is a combination of any one ortwo or more of compounds shown in the formula I or II or III. The catalyst for synthesizing the cyclic carbonate is a multi-active-site catalyst, an active group R group and halogen atoms in the catalyst can generate a cooperative catalysis function, so that under the condition that other additives and catalysts do not need to be added, under the mild condition, a cycloaddition reaction can be efficiently and high-selectively catalyzed for synthesizing the cyclic carbonate, and the catalyst has high industrial potential.

Description

technical field [0001] The invention belongs to the field of catalysts, and relates to a catalyst for synthesizing cyclic carbonates, a preparation method and a method for preparing cyclic carbonates, in particular to a multi-active-site ionic liquid catalyst for synthesizing cyclic carbonates, Preparation method and preparation method of cyclic carbonate. Background technique [0002] In recent years, with the burning of fossil fuels, the impact of carbon dioxide on global warming has become more serious, CO 2 The conversion of C1 resources to high value-added chemicals is an effective means to alleviate energy crisis and environmental problems, and it is also the frontier of international research in recent years. More representative is CO 2 Carbonylation of cyclic carbonates with epoxy compounds. Cyclic carbonate is an important chemical product widely used. It has the characteristics of low toxicity, biodegradability, and high boiling point. It can be used as an inert...

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): C07D317/36C07D233/90C07D233/70B01J31/02C07F9/54C07C215/40C07C229/16
Inventor 成卫国时自洁苏倩应挺董丽何宏艳张锁江
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI