A Mesoporous Carbon-Based Catalyst and Its Application in the Synthesis of Polyetheramine

Abstract

The invention discloses a mesoporous carbon-based catalyst and its application in polyetheramine synthesis. The catalyst is based on CMK‑3 mesoporous carbon, and one or several metals among Ni, Ru or Cu are supported on the surface by impregnation method, and then used as a catalyst after reduction. The catalyst can efficiently catalyze polyether polyols with a number average molecular weight of 200-5000 to synthesize polyether amines by ammoniation and hydrogenation, wherein the primary amine rate can reach more than 95%. Due to the characteristics of uniform mesopore and high specific surface of the carrier, hydrogen, ammonia and polyether polyol can be well mixed in the pores during the reaction process, the required hydrogen pressure is low, and the molecular weight of the applicable substrate is wide. , The amount of catalyst used is low, the thermal stability is good, and the service life of the catalyst is long.

Description

technical field [0001] The invention relates to the field of chemical engineering, in particular to a mesoporous carbon-based 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 ami...

AI Technical Summary

Problems solved by technology

However, the skeleton series still has low total amine value and low primary amine rate.

Problems such as low molecular weight universality

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