Method for selectively preparing furan dimethylamine
CN119707887APending Publication Date: 2025-03-28ZHEJIANG UNIV +1
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Patent Information
- Application Number
- CN202510223637.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-03-28
AI Technical Summary
Technical Problem
The existing precious metal catalysts have high costs, large price fluctuations, difficulty in catalyst recovery and possible side reactions in the reduction amination reaction, which limits their application on industrial scale.
Method used
A Ni-metal, Ni-Al spinel and Al2O3 phase stable catalyst system was used to prepare a nickel-based catalyst through co-precipitation method, calcination and reduction steps, and was used to reduce and amination of 2,5-diformylfuran to furandimethylamine under pressure hydrogen gas and stirring conditions.
Benefits of technology
It realizes efficient and stable catalytic reduction amination reaction, reduces the preparation cost and time, and has good recovery and stability of the catalyst, which is suitable for industrial applications.
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Smart Images
Figure CN119707887A_ABST
Abstract
The invention discloses a method for selectively preparing furan dimethylamine, which comprises the following steps: mixing 2, 5-diformyl furan, a catalyst, absolute methanol, an ammonia source and an additive, and carrying out reductive amination on the 2, 5-diformyl furan under pressure hydrogen and stirring conditions to convert the 2, 5-diformyl furan into the furan dimethylamine. The preparation process is simple in procedure and mild in condition, and the preparation cost and time are greatly reduced; in the prepared catalyst, the Ni metal, the Ni-Al spinel and the Al2O3 phase exist stably, and the formed metal Ni has very strong capability of catalytically reducing aminated DFF in a mixed phase of the Ni-Al spinel and the Al2O3, so that the preparation of BAMF by hydrogenation of an aminated intermediate imine is facilitated.
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