A kind of mesoporous nickel catalyst and its application in polyetheramine synthesis

Abstract

The invention discloses a mesoporous nickel catalyst and its application in polyetheramine synthesis. The catalyst uses nickel nitrate as a nickel source, and after pre-hydrolysis with a weak base, forms a mesoporous structure under the action of a surfactant, and finally forms a mesoporous nickel structure in the presence of a reducing agent such as sodium borohydride. The mesoporous nickel catalyst can efficiently catalyze the hydrogenation of polyether polyols to synthesize polyetheramines. For polyether polyols with a number average molecular weight of 200-5000, the primary amine rate of the products is above 98%. Compared with the traditional skeleton catalyst, the catalyst has uniform pores, low consumption, good stability and long service life of the catalyst.

Description

technical field [0001] The invention relates to the field of chemical engineering, in particular to a mesoporous nickel catalyst and its application in polyetheramine synthesis. Background technique [0002] Polyetheramine is a kind of polymer whose main chain is polyether structure and the terminal active functional group is amine group. Because of the adjustability of a series of properties such as polyetheramine reactivity, toughness, viscosity and hydrophilicity, and the amine group provides the possibility of polyetheramine reacting with various compounds, its special molecular structure endows polyetheramine Excellent comprehensive performance, the current commercialized polyetheramines include monofunctional, difunctional, trifunctional, and a series of products with molecular weights from 200 to 5000. It has been widely used in many fields such as polyurea spraying, large composite materials and epoxy resin curing agent. The synthesis methods of polyether amine mai...

AI Technical Summary

Problems solved by technology

[0003] However, most of the catalysts used so far are commercial Raney series, which have small specific surface area, irregular pore structure, low primary amine rate and low molecular weight universality.

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