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Preparation method of polyether amine catalyst and polyether amine

A polyether amine and catalyst technology, applied in the field of organic polymer compounds, can solve the problems of high catalyst cost, high price, and environmental pollution, and achieve the effects of sufficient and uniform metal adsorption, process and cost saving, and large specific surface area

Pending Publication Date: 2022-06-28
ZHEJIANG HUANGMA TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The preparation methods of the above-mentioned catalysts all adopt the equal-volume impregnation method, using nitrate as the precursor of the metal salt, releasing toxic nitrogen oxides during the roasting process, which seriously pollutes the environment; once impregnated roasting, the metal adsorption effect is poor, and it is easy to be lost. The catalytic effect of the catalyst is poor and the service life is short
[0010] Moreover, the most advanced production technology of polyetheramine is basically monopolized by several large international companies, and the cost of preparing catalysts is high, the direct import price is expensive, and it is more susceptible to public emergencies (epidemics, etc.), there are The risk of cutting off the supply of imported polyetheramine cannot be replaced domestically

Method used

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  • Preparation method of polyether amine catalyst and polyether amine
  • Preparation method of polyether amine catalyst and polyether amine
  • Preparation method of polyether amine catalyst and polyether amine

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preparation example Construction

[0033] see figure 1 , the invention provides a preparation method of a polyetheramine catalyst, the polyetheramine catalyst is a supported metal catalyst, using γ-Al 2 O 3 As the carrier, basic copper carbonate, basic nickel carbonate and basic cobalt carbonate are used as the precursors of the supported metals, and the polyetheramine catalyst is prepared after twice adsorption roasting and one reduction by the equal volume impregnation method; the specific steps include:

[0034] Step S100. Prepare a solution: add basic copper carbonate, basic nickel carbonate and basic cobalt carbonate to deionized water, stir until basic copper carbonate, basic nickel carbonate and basic cobalt carbonate are completely dissolved to obtain solution A; The stirring temperature is preferably 60° C., and the stirring time is preferably 30 min.

[0035] Step S200. Impregnation and adsorption: the alumina carrier is immersed in the solution A obtained in S1, and after being immersed in a water ...

Embodiment 1

[0046] 1. Preparation of polyetheramine catalyst: first add 450g basic nickel carbonate, 50g basic copper carbonate and 30g basic cobalt carbonate into deionized water, heat to 40°C and stir to fully dissolve to form a solution; then Weighed 700g γ-Al by the equal volume dipping method 2 O 3 The carrier was immersed in the above mixed solution, immersed in a water bath at 40 °C for 30 min, and after the adsorption equilibrium was reached, the temperature was raised to 90 °C for vacuum dehydration and drying, and then calcined at 400 °C for 4 hours; The metal salt solution was prepared in the same proportion, and the second impregnation, adsorption and calcination were carried out; after the final cooling, the carrier after the secondary calcination was rotated and reduced for 60 hours under a hydrogen atmosphere at 420 °C in a reduction furnace to obtain the self-made polyetheramine. Catalyst (supported metal catalyst).

[0047] 2. The synthetic chemical equation of polyethe...

Embodiment 2

[0051] 1. Preparation of polyetheramine catalyst: first add 400g basic nickel carbonate, 80g basic copper carbonate and 50g basic cobalt carbonate into deionized water, heat to 40°C and stir to fully dissolve to form a solution; then Weighed 800g γ-Al by the equal volume dipping method 2 O 3 The carrier was immersed in the above mixed solution, immersed in a water bath at 40 °C for 30 min, and after the adsorption equilibrium was reached, the temperature was raised to 90 °C for vacuum dehydration and drying, and then calcined at 420 °C for 6 h; The metal salt solution was prepared in the same proportion, and the second impregnation, adsorption and calcination were carried out; after the final cooling and cooling, the carrier after the secondary calcination was rotated and reduced in a reducing furnace at 420 °C for 70 hours to obtain the self-made polyetheramine. Catalyst (supported metal catalyst).

[0052] 2. The synthetic chemical equation of polyetheramine is as follows:...

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Abstract

The polyether amine catalyst is a supported metal catalyst, gamma-Al2O3 is used as a carrier, basic cupric carbonate, basic nickel carbonate and basic cobalt carbonate are used as precursors of supported metal, and the supported metal catalyst is prepared by a hydrothermal method. And the polyether amine catalyst is prepared by two times of adsorption roasting and one time of reduction through an equivalent-volume impregnation method. By using the basic carbonate, decomposition is easier, only water and carbon dioxide are generated, the waste gas treatment process and cost are saved, meanwhile, the prepared polyether amine catalyst is high in activity and selectivity, long in service life and wide in application range, the conversion rate and the primary amine selectivity can be improved when the polyether amine catalyst is used for preparing polyether amine, and the product color is reduced; therefore, the obtained polyether amine has higher activity and wider application range.

Description

technical field [0001] The invention belongs to the technical field of organic polymer compounds, and in particular relates to a preparation method of a polyetheramine catalyst and a polyetheramine. Background technique [0002] Polyetheramine (PEA), also known as Amine-Terminated Polyethers (ATPE), is a class of compounds with a polyoxyalkylene structure as the main chain and a terminal amine group as the active functional group. Most of these polyether amines use polyether polyols as raw materials, and through different treatment methods, the terminal hydroxyl groups of polyether polyols are converted into amine groups. Since the amine hydrogen at the end of polyetheramine has stronger reactivity than the hydroxyl hydrogen at the end of polyether, it can react with a variety of compounds, such as epoxy groups and isocyanate groups; The existence of ether bonds in the ether chain makes it easily soluble in various organic substances, which greatly broadens the application ...

Claims

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Application Information

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IPC IPC(8): B01J23/755C08G65/325
CPCB01J23/755C08G65/3255C08G2650/04C08G65/269B01J21/04B01J21/18B01J23/72B01J23/74B01J37/0205B01J37/08B01J37/16B01J2231/10B01J2523/17B01J2523/31B01J2523/845B01J2523/847
Inventor 赵世聪王伟松余江宋明贵
Owner ZHEJIANG HUANGMA TECH
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