Method for combining di-n-propylamine through n-propylamine disproportionated reaction and used catalyst

A technology of di-n-propylamine and catalyst, which is applied in the field of synthesis of chemical intermediate-di-n-propylamine, can solve the problem of low selectivity of di-n-propylamine, and achieve the effects of high selectivity, reduced pressure, and wide source of raw materials
CN102614895BActive Publication Date: 2013-11-13ZHEJIANG JIANYE CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG JIANYE CHEM
Publication Date
2013-11-13

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Abstract

The invention discloses a load type catalyst used for combining di-n-propylamine, which utilizes roasted gama-alumina as a carrier. An active component is loaded on the carrier and is composed of nickel, copper, zinc and ruthenium. The weight sum of the nickel, the copper, the zinc, the ruthenium and the roasted gama-alumina is the total weight. The nickel occupies 15% to 25% of the total weight, the copper occupies 5% to 12% of the total weight, the zinc occupies 0.5% to 1% of the total weight, and the ruthenium occupies 0.5% to 1% of the total weight. A preparation method of the load type catalyst for combining the di-n-propylamine and a method for preparing the di-n-propylamine by using the load type catalyst are further disclosed. N-propylamine is added in a raw material cylinder, is gasified and then passes through a fixed bed reactor containing an activated load type catalyst, catalyst disproportionated reaction is conducted under the hydrogen condition, a product is collected after condensation, and rectification is conducted to obtain the di-n-propylamine.
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Description

technical field

[0001] The invention relates to a synthesis method of a chemical intermediate-di-n-propylamine, a catalyst used and a corresponding preparation method. Background technique

[0002] Dipropylamine (Dipropylamine), its molecular formula is C 6 h 15 N, whose structural formula is as follows:

[0003]

[0004] Mono-n-propylamine (also known as n-propylamine), di-n-propylamine, and tri-n-propylamine are important fine chemical intermediates used in the synthesis of pesticides, medicines, dyes, petroleum additives, carbon removers, emulsifiers, etc. Among them, di-n-propylamine has a wide market demand and is mainly used in the synthesis of new herbicides such as ansulfin and trifluralin.

[0005] Comprehensive literature report, the preparation method of di-n-propylamine mainly contains following three kinds at present:

[0006] 1. Acrylonitrile hydrogenation method (CN10054672): different catalysts can be used to produce mono-n-propylamine, di-n-propylamin...

Claims

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