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Production method of N-ethyl-n-butylamine

A technology of ethyl-n-butylamine and a production method, which is applied to chemical instruments and methods, preparation of amino compounds, preparation of organic compounds, etc., can solve problems such as difficulty in industrial amplification, troublesome equipment production, etc., and achieves low cost and low use cost. , the effect of high product yield

Active Publication Date: 2014-04-16
ZHEJIANG XINHUA CHEM +1
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Problems solved by technology

[0007] Considering the sources of raw materials, material safety, etc., the n-butanol ethyl amination method is most suitable for industrial production, but the n-butanol ethyl amination method (CN200710071564.4) has only seen patents but no reports of industrial production, and The reactor is a tubular reactor, which is difficult for industrial scale-up and troublesome for equipment fabrication.

Method used

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  • Production method of N-ethyl-n-butylamine
  • Production method of N-ethyl-n-butylamine

Examples

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Embodiment 1

[0031] The mixed solution of γ-alumina modified by MgO and a certain proportion of copper nitrate, cobalt nitrate, and lanthanum nitrate is fully impregnated, dried at 120°C for 5 hours, then roasted at 400-550°C for 8 hours, and cooled naturally. Obtain the required supported catalyst A, wherein the weight content of each active component is: Cu20%, Co10%, La1.5%, Ce1.5%.

Embodiment 2

[0033] As in Example 1, the obtained active component content is Cu18%, Zn6%, Fe7%, La1%, Ce1% (weight) catalyst B.

Embodiment 3

[0035] Obtaining active component content as embodiment 1 is Cu16%, Co8%, Fe5%, La1%, the catalyst C of Ce0.2% (weight).

[0036] Example 3

[0037] Obtaining active component content as embodiment 1 is Cu12%, Co9%, Zn5%, La1%, the catalyst D of Ce1.5% (weight).

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Abstract

The invention relates to a production method of N-ethyl-n-butylamine. According to the production method, n-butanol and monoethylamine are taken as raw materials; a supported non-noble metal catalyst is used under hydrogen conditions; and amination synthesis of N-ethyl-n-butylamine is performed, wherein a reaction temperature ranges from 120 to 220 DEG C, reaction pressure ranges from 0.1 to 1.2MPa, n-butanol liquid phase airspeed ranges from 0.2 to 1.0h<-1>, and molar ratio of n-butanol to monoethylamine ranges from 0.3 to 1. The supported non-noble metal catalyst used in the production method is a metal active compound-rear earth additive / aluminum oxide supported catalyst, wherein the alumina supporter is alkaline earth metal oxide modified aluminum oxide, the metal active compound comprises at least two selected from copper, cobalt, iron, and zinc; and the additive is a mixture of lanthanum and cerium. Catalyst cost is relatively low; technological processes are reasonable and simple; energy consumption is low; heavy components of byproducts are few; and separation of byproducts is simple.

Description

technical field [0001] The present invention relates to a kind of production method of special amine products, more specifically, the present invention relates to a kind of production method of N-ethyl n-butylamine. technical background [0002] N-Ethyl-n-butylamine (ENBA) is an important organic chemical intermediate, which is the intermediate of the herbicide fenzadi. It is not produced in China at present, and the demand mainly depends on imports. [0003] At present, there are few bibliographical reports on the synthesis method of N-ethyl n-butylamine, which are roughly the N-ethylation method of n-butylamine, the amination method of monoethylamine n-butyraldehyde and the ethylamination method of n-butanol. [0004] The main reagents of N-ethylation method are diethyl sulfate, diethyl phosphate (Phosphorus, Sulfur and Silicon and the Related Elements, 1994, 92 (1-4): 1993-199), ethyl chloride (Journal of Chemical Research, Synopses, 1988, 10: 346-347) or ethanol (Ger.Of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/08C07C209/16
Inventor 兰昭洪包江峰王卫明王晓明周利诸葛王平黄斌祝航吴锦平邵建强
Owner ZHEJIANG XINHUA CHEM
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