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Method for preparing amino alcohol from dihydric alcohol and/or polyhydric alcohol

A technology of dihydric alcohol and polyhydric alcohol, applied in the field of preparing amino alcohol, can solve the problems of high toxicity of amino alcohol raw material, unreasonable resource utilization, difficulty in product separation, etc., achieves reduction of one-time investment and production cost, and easy long-term operation , the effect of cheap and easy-to-obtain raw materials

Inactive Publication Date: 2017-06-09
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

The production cost of this method is high, coupled with unreasonable utilization of resources, the development of its technology is limited
[0007] Judging from the existing literature and technologies, most of the technical routes for the preparation of amino alcohols have disadvantages such as high toxicity of raw materials, poor selectivity, difficult product separation, harsh reaction conditions, and low yields. The preparation methods are not conducive to large-scale continuous industrialization. Production

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  • Method for preparing amino alcohol from dihydric alcohol and/or polyhydric alcohol
  • Method for preparing amino alcohol from dihydric alcohol and/or polyhydric alcohol

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Embodiment Construction

[0015] The invention provides a method for preparing aminoalcohol with dihydric alcohol and / or polyhydric alcohol and ammonia as raw materials. Dibasic alcohol and / or polyhydric alcohol and liquid ammonia are mixed in a certain proportion, pumped into the reactor, and the catalyst and The reaction is carried out in the presence of hydrogen, the product is mainly amino alcohol, and the by-products include imine, diamine, polyamine and so on.

[0016] The product is analyzed by Agilent7890N, SE-30 capillary column, FID detector, and isobutanol is used as internal standard for quantitative analysis.

[0017] The catalyst used is 15%Ni-1.6%Re-1.2%B / Al 2 o 3 Catalyst, preparation method is to take by weighing 7.432 grams of Ni (NO 3 ) 2 ·6H 2 O, 0.231 g NH 4 ReO 4 and 0.686 g H 3 BO 3 Dissolve in 12ml deionized water. half of this aqueous solution was then impregnated to 10 g of Al 2 o 3 (20-40 mesh) carrier, air-dried, then dried at 120°C for 4 hours, and then calcined ...

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Abstract

The invention relates to a method for preparing amino alcohol from dihydric alcohol and / or polyhydric alcohol. The method comprises the following steps: mixing dihydric alcohol and / or polyhydric alcohol with liquid ammonia in a certain ratio, pumping into a reactor, and performing reaction in the presence of a catalyst and hydrogen. Due to adoption of a novel catalyst, the method is excellent in catalysis property and easy in long-time operation. As an alkamine product is produced from dihydric alcohol and / or polyhydric alcohol through hydroforming amination, the method can be achieved under relatively low reaction pressure, and the constitution of the product can be flexibly adjusted and varied by adjusting and changing reaction conditions, so that the selectivity of a target product can be improved, the reaction procedures are simple, the reaction process is environmental-friendly, and the one-time investment and production cost of a production device can be lowered; and a reaction product can be easily separated from the catalyst, so that large-scale continuous industrial production can be easily achieved.

Description

technical field [0001] The present invention relates to a method for preparing aminoalcohol, and in more detail, relates to a method for preparing aminoalcohol by using dihydric alcohol and / or polyhydric alcohol and ammonia as raw materials under the condition of hydrogen. Background technique [0002] Amino alcohol is an important bifunctional compound, which contains hydroxyl and amino groups, has the general properties of alcohol and amine, and is widely used in the preparation of specialty chemicals, medicines and pesticides. Amino alcohol is a common structure, and as an important organic synthesis building block in the field of organic synthesis, it has received continuous attention for a long time. Amino alcohol structures also widely exist in a variety of natural compounds, and these compounds are usually biologically active and have great medicinal value. Because of this, amino alcohols have important and extensive applications in the fields of organic synthetic ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C215/12C07C213/02
CPCC07C213/02C07C215/12
Inventor 严丽丁云杰吕元程显波马立新
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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