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Method for synthesizing N,N'-dialkyl oxalamide by using artificial photosynthesis effect, and derivative thereof

An alkyloxyaldamide and artificial photosynthesis technology, applied in the field of environmental protection, can solve the problems of hindering the industrialization process, high energy consumption and high cost, and achieve the effect of direct resource utilization

Active Publication Date: 2018-05-29
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main factors restricting the commercial application of this technology are high energy consumption and high cost, especially the subsequent CO2 desorption, compression separation and transportation costs are obstacles hindering its industrialization process

Method used

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  • Method for synthesizing N,N'-dialkyl oxalamide by using artificial photosynthesis effect, and derivative thereof
  • Method for synthesizing N,N'-dialkyl oxalamide by using artificial photosynthesis effect, and derivative thereof
  • Method for synthesizing N,N'-dialkyl oxalamide by using artificial photosynthesis effect, and derivative thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Using artificial photosynthesis through CO 2 Prepare N, the production method of N '-diethyloxyaldamide:

[0023] Take 10ml (0.103mol) of n-ethylamine and put it into a 100ml sapphire autoclave with a xenon lamp light source and magnetic stirring, and then add 1.2g (0.005mol) of LaFeO 3 Catalyst and 3g molecular sieve dehydrating agent, at room temperature, filled with 1.5MPa of CO 2 , sealed the reaction kettle, turned on the xenon lamp light source, raised the temperature to 120°C, and reacted at constant temperature for 12h. Cool, vent to normal pressure and normal temperature, take out the light yellow reaction liquid, filter the catalyst and dehydrating agent, then rotate the liquid obtained after the reaction, and carry out the gas chromatography-mass spectrometry analysis of the concentrated solution by rotary evaporation and decompression, and measure the concentration of the raw material n-ethylamine. The conversion rate was 82%.

[0024] Product composition...

Embodiment 2

[0028] Using artificial photosynthesis through CO 2 Prepare N, the production method of N '-dibutyloxyaldamide:

[0029] The operation is the same as that of Example 1, and the solvent is the same as that of Example 1, with n-ethylamine being replaced by n-butylamine, and the catalyst LaFeO 3 Change to ZnY 2 o 4 , the reaction temperature is 150°C, and the reaction time is 24h. The rest of the operating conditions remain unchanged. The conversion rate of raw material n-butylamine was measured to be 88%.

[0030] Product composition, selectivity and yield are shown in Table 2:

[0031] Table 2. Product composition, selectivity and yield

[0032]

Embodiment 3

[0034] Using artificial photosynthesis through CO 2 Preparation N, the production method of N '-dicyclohexyl oxaldamide:

[0035] The operation is the same as in Example 1, and n-ethylamine is replaced by cyclohexylamine, and the catalyst LaFeO 3 Change to In 0.5 Cu 0.5 TaO 4 , the reaction temperature is 120°C, and the reaction time is 36h. The rest of the operating conditions remain unchanged. The conversion rate of the raw material cyclohexylamine was measured to be 78%.

[0036] Product composition, selectivity and yield are shown in Table 3:

[0037] Table 3. Product composition, selectivity and yield

[0038]

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Abstract

The invention discloses a method for synthesizing N,N'-dialkyl oxalamide by using an artificial photosynthesis effect, and a derivative thereof. Under a condition of existence of a catalyst, organic amine and CO2 are synthesized to obtain the N,N'-dialkyl oxalamide and the derivative thereof. The method aims to provide the method for preparing the N,N'-dialkyl oxalamide by direct recycling utilization of flue gas carbon dioxide from a coal-fired power plant.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for synthesizing N,N'-dialkyloxyaldamides and derivatives thereof by artificial photosynthesis. Background technique [0002] Carbon dioxide emissions from flue gas from coal-fired power plants have become the largest source of carbon dioxide emissions in my country. In order to fulfill the commitment and responsibility of my country's carbon emission reduction, it has been reported that the general method is to carry out carbon capture and post-processing. CO2 capture is mainly divided into three categories: post-combustion capture, pre-combustion capture, and oxygen-enriched combustion capture. The common problems faced by capture are high energy consumption and cost. Among them, the post-combustion capture technology is relatively mature, especially the amine-based chemical absorption method is widely used. At present, the main factors restricting t...

Claims

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Application Information

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IPC IPC(8): C07C231/10C07C233/56
CPCC07C231/10C07C233/56
Inventor 孙大雷李成超陈泉方岩雄
Owner GUANGDONG UNIV OF TECH
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