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Catalyst for synthesizing ethylene amine and method for preparing ethylene amine

A catalyst and ethylene amine technology, applied in the field of catalysts for synthesizing ethylene amine, can solve the problems of high energy consumption, serious equipment corrosion and high production cost

Active Publication Date: 2013-10-30
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The dichloroethane process is highly corrosive to equipment, consumes a lot of energy and will cause serious environmental pollution, resulting in high production costs, so this process route is gradually being eliminated
[0012] However, the catalysts of the above-mentioned prior art and the method for preparing ethyleneamines need to be further improved in one or more aspects such as activity, selectivity and stability.

Method used

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  • Catalyst for synthesizing ethylene amine and method for preparing ethylene amine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 5%Ni-15%Re-1.2%B / SiO 2 Catalyst preparation and application

[0034] Weigh 10 g carrier SiO 2 (20-40 mesh), the carrier SiO 2 Install in a quartz tube, dry at 200°C for 5 hours under an inert atmosphere, then introduce 10% ammonia-hydrogen gas mixture (molar content), ammoniation temperature is 300°C, and ammoniation time is 5 hours. 2.477 g Ni(NO 3 ) 2 ·6H 2 O, 2.161 g NH 4 ReO 4 and 0.686 g H 3 BO 3 Dissolve in 12ml deionized water. Half of this aqueous solution was used to impregnate the above ammoniated SiO 2 The carrier was air-dried, then dried at 120°C for 4 hours, and then calcined at 500°C for 4 hours. Then, impregnate the ammonified SiO 2 The carrier is then air-dried, dried at 120°C for 4 hours, and calcined at 500°C for 4 hours. Before the catalyst is used, in a hydrogen flow at 375°C (atmospheric pressure, 2000h -1 ) to reduce for 4 hours. When the temperature in the reactor is naturally lowered to 160°C, the pressure is increased to 8MPa. Af...

Embodiment 2

[0036] 15%Ni-3.6%Re-1.2%B / SiO 2 Catalyst preparation and application

[0037] Weigh 10 g carrier SiO 2 (20-40 mesh), the carrier SiO 2 Install in a quartz tube, dry at 200°C for 5 hours under an inert atmosphere, then introduce 20% ammonia-hydrogen gas mixture (molar content), ammoniation temperature is 300°C, and ammoniation time is 5 hours. 7.432 g Ni(NO 3 ) 2 ·6H 2 O, 0.518 g NH 4 ReO 4 and 0.686 g H 3 BO 3 Dissolve in 12ml deionized water. Refer to Example 1 for the remaining preparation steps and catalyst evaluation scheme. The reaction results are shown in Table 1.

Embodiment 3

[0039] 30%Ni-0.2%Re-15%K / SiO 2 Catalyst preparation and application

[0040] Weigh 10 g carrier SiO 2 (20-40 mesh), the carrier SiO 2 Install in a quartz tube, dry at 200°C for 5 hours under an inert atmosphere, then introduce 50% ammonia-hydrogen gas mixture (molar content), ammoniation temperature is 300°C, and ammoniation time is 5 hours. 14.864 g Ni(NO 3 ) 2 ·6H 2 O, 0.029 g NH 4 ReO 4 and 3.879 grams of KNO 3 Dissolve in 12ml deionized water. Refer to Example 1 for the remaining preparation steps and catalyst evaluation scheme. The reaction results are shown in Table 1.

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Abstract

The present invention relates to a catalyst for synthesizing ethylene amine and a method for preparing ethylene amine. The catalyst is formed of a main active component, an auxiliary agent, and a carrier processed by ammonification. The main active component is Ni or Co, the auxiliary agent comprises one or more of Fe, Cu, Ru, Re, K, Zn, B and other metal or oxides thereof, and the ammonified carrier is ammonified SiO2 or Al2O3. In the total weight of the catalyst, the main active component accounts for 1~40%, and the auxiliary agent accounts for 0.1~20%. The catalyst of the present invention is characterized in that the used carrier needs to be ammonified specially. The ethylene amine product synthesized in a hydrogen condition by using the catalyst of the present invention to carry out an ethanolamine ammonification reaction presents high activity, high selectivity and stability.

Description

technical field [0001] The invention relates to a catalyst for synthesizing ethyleneamine and its application. In more detail, it relates to a method for converting ethanolamine (MEA) and ammonia into ethylenediamine (EDA), diethylenetriamine (DETA), hydroxyethylethylenediamine (AEEA), piperazine (PIP) under the condition of hydrogen. ), hydroxyethylpiperazine (HEP), aminoethylpiperazine (AEP) and other catalysts for ethyleneamines and methods for preparing ethyleneamines. Background technique [0002] Ethyleneamine products are important chemical raw materials and fine chemical intermediates, mainly including ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, polyethylenepolyamine, piperazine and other products, which can be used as Epoxy resin curing agent, emulsifier, antifreeze agent, organic solvent and chemical analysis reagent; used in the production of pesticides, fungicides, insecticides, herbicides, fuels, medicines, surfactants, me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889
CPCC07C215/14B01J27/24B01J35/006C07C213/08C07C211/14B01J23/755B01J23/89C07D295/023C07D295/027C07B43/04B01J23/80B01J23/8953C07D295/13C07D295/088C07C211/10B01J23/8896C07C209/16B01J23/889B01J35/1019B01J23/75B01J35/615
Inventor 严丽丁云杰吕元程显波马立新
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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