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Method for preparing organic alcohol by catalyzing ethanol to reduce organic aldehyde compound

A compound and organic aldehyde technology, applied in the field of selective reduction of organic aldehyde compounds, can solve the problems of cumbersome catalyst synthesis process and high cost of large-scale preparation, and achieve the effects of low price, mild reaction, easy regulation, and low equipment requirements

Pending Publication Date: 2022-06-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The catalyst synthesis process in the above-mentioned new system is relatively cumbersome, and the cost of large-scale preparation is high

Method used

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  • Method for preparing organic alcohol by catalyzing ethanol to reduce organic aldehyde compound
  • Method for preparing organic alcohol by catalyzing ethanol to reduce organic aldehyde compound

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The CuZnAl skeleton catalyst was prepared by the alkali etching method, which included the following steps: configure 6.25mol / L NaOH aqueous solution, place it in a water bath at 5°C, slowly add 10g of 300-mesh Tiweed alloy (CuZnAl), etch for 0.5h, and react After finishing, rinse with water until it becomes neutral to obtain CuZnAl framework catalyst CuZnAl-0.5, which is stored in absolute ethanol.

Embodiment 2

[0029] 200mg CuZnAl-0.5 (Example 1), 2mL concentration>99% ethanol, 0.5mmol 5-Hydroxymethylfurfural were added to a 35mL pressure reaction tube, and 1bar N was introduced 2 , at 120 ° C with a stirring speed of 700 rpm for 3 h, the reaction product was confirmed by the gas phase that the main product was indeed 2,5-furandimethanol. Using naphthalene as the internal standard, the yield of 2,5-furandimethanol was 92% through quantitative analysis by gas chromatography, and the yield calculation formula was: target product yield (%)=the amount of the target product actually obtained ÷ Amount of theoretical target product×100%.

Embodiment 3

[0031] It is basically the same as Example 2, the difference is: CuZnAl-0.25 with an etching time of 0.25h is used instead of CuZnAl-0.5 in Example 2, and the detection result is that the product of 2,5-furandimethanol is obtained in this example. The rate was 71%.

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Abstract

The invention provides a method for preparing organic alcohol by catalyzing ethanol to reduce an organic aldehyde compound, which comprises the following steps: mixing the aldehyde compound, ethanol and a CuZnAl skeleton catalyst, placing in a reaction tube, and preparing the organic alcohol under certain catalytic conditions. The CuZnAl framework catalyst is prepared by adopting an alkali corrosion method, and an active Cu catalyst is produced by using a CuZnAl alloy (CuZnAl alloy) as a raw material and corroding an Al component in the alloy by using a NaOH solution. The catalyst involved in the method is high in activity and low in cost, and the synthesis method is simple and convenient; ethanol is used as a hydrogen source and a solvent, is a renewable bulk reagent, and is low in price and environment-friendly; ethanol is used for hydrogen supply in the reaction, use of high-pressure hydrogen can be avoided, the reaction is mild and easy to regulate and control, and the requirement for equipment is low.

Description

technical field [0001] The invention relates to the technical field of selective reduction of organic aldehyde compounds, in particular to a method for preparing organic alcohol by catalyzing ethanol reduction of organic aldehyde compounds based on a CuZnAl framework catalyst. Background technique [0002] The hydrogenation of organic aldehydes to produce organic alcohols is an important reaction in the production of fine chemicals from biomass, which can be used for high-value utilization of biomass. The traditional hydrogenation reaction of organic aldehydes relies on hydrogen as a hydrogen-donating reagent to complete the reaction. The hydrogen hydrogenation system requires high-pressure equipment, and there are certain risks in the transportation, storage and processing of hydrogen. In recent years, methods using hydrogen transfer hydrogenation have received more and more attention, such as the use of formic acid, alcohols and organosilanes, which can avoid the above pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/42C07D307/44C07C33/20C07C33/22C07C31/135C07C31/12C07C29/14B01J25/00
CPCC07D307/42C07D307/44C07C29/14B01J25/00C07C2601/14C07C33/20C07C33/22C07C31/1355C07C31/12Y02P20/584
Inventor 陆强张璇黄耀兵王体朋
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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