Catalyst for preparing C2-C3 lower aliphatic amine and production method thereof

Abstract

The invention discloses a catalyst for preparing C2-C6 low-grade aliphatic amine. The catalyst comprises a carrier and an active component, wherein the active component accounts for 10 to 60 percent of the total weight of the catalyst, and the active component is Co or consists of Co, Ni and Fe. The invention also discloses a method for producing the catalyst, which comprises the steps of putting the carrier into an aqueous solution of the active component for impregnation, loading the active component onto the carrier, drying the impregnated carrier at a temperature between 100 and 180 DEG C and then decomposing the carrier at a temperature between 250 and 550 DEG C, using hydrogen to perform reduction treatment at a temperature between 250 and 650 DEG C and obtaining the catalyst. The catalyst adopted to prepare the C2-C6 low-grade aliphatic amine can be more beneficial to the generation of tertiary amine.

Description

technical field [0001] The present invention relates to a method for preparing C 2 ~C 6 A catalyst for lower aliphatic amines and a production method thereof; specifically, it relates to a catalyst for preparing amines by ammoniating lower aliphatic alcohols and corresponding aldehydes and ketones in a state of hydrogenation or hydrogenation, and a preparation method thereof. Background technique [0002] In the chemical industry, amine compounds usually include primary amines, secondary amines, and tertiary amines, and lower aliphatic amines are widely used in pesticides, medicines and other fields. They are usually prepared by ammoniation reaction of alcohols and corresponding aldehydes and ketones in the presence of hydrogenation or hydrogenation and catalysts. The mechanism of ammoniation reaction can be divided into three steps: the first step is the dehydrogenation of raw material alcohol Aldehydes or ketones are generated; in the second step, aldehydes or ketones ar...

AI Technical Summary

Problems solved by technology

Due to the adoption of the two-stage method, the process flow is relatively long, requiring high equipment investment, and the preparation of the catalyst is relatively complicated

[0005] Chinese patent CN1151984A has reported a kind of ammoniation reaction catalyst, is supported by active components such as Ni, Zn, Fe by carrier, wherein the weight percent that active component accounts for in the catalyst is 30-70wt%, and the rest is carrier. The catalyst can be Applied to various ammoniation reactions, but the reaction temperature is too high

The impregnation process is more cumbersome

And this patent does not report about the application example in lower aliphatic amine aspect

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