Mesoporous nickel catalyst and application of same in polyether amine synthesis

Abstract

The invention discloses a mesoporous nickel catalyst and application of the same in polyether amine synthesis. According to the catalyst, nickel nitrate serves as a nickel source, a mesoporous structure is formed under the action of surfactants after weak base prehydrolysis, and a mesoporous nickel structure is formed with the presence of reducing agents such as sodium borohydride. The mesoporousnickel catalyst can efficiently catalyze polyether polyol to synthesize polyether amine through hydrogen ammoniation, and the primary amine yield of the polyether polyol with the number-average molecular weight of 200-5000 reaches more than 98%. Compared with conventional skeletal catalysts, the mesoporous nickel catalyst has the advantages of pore uniformity, low consumption, high stability and long service life.

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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