Method for production of monoethanolamine and diethanolamine

A technology of diethanolamine and monoethanolamine, applied in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxyl compounds, etc., can solve problems such as by-product triethanolamine

Active Publication Date: 2012-10-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of triethanolamine by-product in the producti

Method used

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  • Method for production of monoethanolamine and diethanolamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Mix 187 g of silica sol with 5.6 mL of ethylenediamine and stir at room temperature for 0.5 h; according to SiO 2 / Al 2 o 3 = 25 (molar ratio) ratio Weigh boehmite, add it to the above mixture, and stir vigorously for 0.5 hours, then add 1% La (NO 3 ) 3 , the above mixture was extruded, and the product was kept at 180° C. for 36 hours. The crystallized product was washed with deionized water, and dried at 100°C. The dried molecular sieve was placed in a muffle furnace and calcined in an air atmosphere. The temperature was raised to 600°C at a rate of °C / min, and calcined at this temperature for 6 hours, thereby obtaining the molecular sieve precursor I. The molecular sieve precursor I is exchanged with ammonium nitrate solution and then roasted at 550° C. to obtain a finished binder-free ZSM-5 zeolite molecular sieve catalyst; the compressive strength of the catalyst is greater than 60 N / particle.

[0013] Get 10mL molecular sieve catalyst and place in the reactor,...

Embodiment 2】～【 Embodiment 15

[0015] According to the various steps and conditions of Example 1 to prepare the catalyst and evaluate the catalyst, it is only to change the silicon-aluminum ratio of the raw materials, the doping elements, the ratio of the reaction raw materials, the temperature and pressure factors of the evaluation system, etc., and list the results in the table 1. .

[0016] Table 1

[0017]

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Abstract

The invention relates to a method for production of monoethanolamine (MEA) and diethanolamine (DEA), and aims to mainly solve the problem that triethanolamine (TEA) is generated as a byproduct in production of monoethanolamine in the prior art. According to a technical scheme adopted by the method of the invention, a binder-free ZSM-5 zeolite molecular sieve catalyst containing SiO2 and Al2O3 that are in a mole ratio of 10-500 by weight is employed, and raw materials contact with the catalyst to generate triethanolamine-free products. The technical scheme well solves the problem, and can be applied in the industrial production of monoethanolamine (MEA) and diethanolamine.

Description

technical field [0001] The invention relates to a method for producing monoethanolamine and diethanolamine. Background technique [0002] Ethanolamine is the general term for monoethanolamine (abbreviation: ethanolamine), diethanolamine and triethanolamine. Since the ethanolamine compound contains two functional groups: hydroxyl group and amine group, it has some chemical properties and new properties of alcohol and amine compounds. The characteristics of bifunctional groups and the interaction between them make it an important organic intermediate and chemical end product with a wide range of uses. In recent years, the market demand for ethanolamine has been increasing day by day. One of the uses of ethanolamine is to produce important basic raw materials for surfactants, medicines, polyurethane additives, rubber processing aids, antifreeze additives and other products. At present, the production method of ethanolamine mainly adopts the ethylene oxide ammonia solution meth...

Claims

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Application Information

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IPC IPC(8): C07C215/12C07C215/08C07C213/04B01J29/40B01J29/46
Inventor 冯汝明王德举刘仲能王辉郭友娣吕建刚
Owner CHINA PETROLEUM & CHEM CORP
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