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Catalyst for preparing ethanediol by epoxyethane hydration and preparing method

A technology for hydration and catalyst of ethylene oxide, which is applied in the directions of hydrolysis preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalyst, etc., can solve the problems of difficult separation, complicated process, etc., and reduce the swelling speed Effect

Active Publication Date: 2007-06-13
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the above-mentioned technologies also have the problems of complex process and difficult separation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 500ml of deionized water to the beaker, add 28.4g of analytically pure Na 2 SiO 3 .9H 2 O, to dissolve it. Then add 7.9g of analytically pure KMnO 4 , to dissolve it. A mixed solution was obtained.

[0035] Add 300ml of anion exchange resin (spherical, 0.5-1.0mm in diameter) and 500ml of deionized water into the beaker to fully immerse it. Then add all the mixed solution, stir gently, and let stand for 10 hours.

[0036] The solution was filtered off and washed several times with deionized water. Catalyst A is obtained.

Embodiment 2

[0038] (1) Add 500ml of deionized water to a beaker, add 28.4g of analytically pure Na 2 SiO 3 .9H 2 O, to dissolve it. Then add 7.9g of analytically pure KMnO 4 , to dissolve it. A mixed solution was obtained.

[0039] (2) Add 300ml of anion exchange resin (spherical, 0.5-1.0mm in diameter) and 500ml of deionized water into the beaker to fully immerse it. Then add all the mixed solution, stir gently, and let stand for 12 hours.

[0040] (3) The solution was filtered off and washed several times with deionized water.

[0041] (4) Add the above-mentioned treated anion exchange resin into the beaker, add 500ml of deionized water to fully immerse it. Then add the mixed solution prepared in (1), stir gently, and let stand for 12 hours.

[0042] (5) The solution was filtered off and washed several times with deionized water. Catalyst B is obtained.

Embodiment 3

[0044] (1) Add 500ml of deionized water to a beaker, add 28.4g of analytically pure Na 2 SiO 3 .9H 2 O, to dissolve it. Then add 15.8g of analytically pure KMnO 4 , to dissolve it. A mixed solution was obtained.

[0045] (2) Add 300ml of anion exchange resin (spherical, 0.5-1.0mm in diameter) and 500ml of deionized water into the beaker to fully immerse it. Then add all the mixed solutions, stir gently, and let stand for 20 hours.

[0046] (3) The solution was filtered off and washed several times with deionized water.

[0047] (4) Add the above-mentioned treated anion exchange resin into the beaker, add 500ml of deionized water to fully immerse it. Then add the mixed solution prepared in (1), stir gently, and let stand for 17 hours.

[0048] (5) The solution was filtered off and washed several times with deionized water.

[0049](6) Repeat steps (4) and (5). Catalyst C is obtained.

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Abstract

The present invention relates to a catalyst for catalyzing ethylene oxide hydration to prepare ethylene glycol and its preparation method. Said catalyst composition includes anion-exchange resin, silicate and permanganate, their mixing ratio is 100:4-8:0.1-0.5. Its catalysis activity and selectivity can be up to above 98%.

Description

technical field [0001] The invention relates to a catalyst for catalyzing the hydration of ethylene oxide to prepare ethylene glycol and a preparation method thereof, in particular to a modified anion exchange resin for catalyzing the hydration of ethylene oxide to prepare ethylene glycol and a preparation method thereof. Background technique [0002] Ethylene glycol (EG) is an important petrochemical raw material, one of the important derivatives of ethylene, and the product with the largest output among diols. It is widely used in the production of synthetic fibers, paints, adhesives, surface active It is an indispensable intermediate for products such as agents and explosives, and can also be directly used as a solvent and antifreeze. [0003] At present, more than 85% of the industrial production methods of ethylene glycol at home and abroad adopt the EO / EG technology developed by SD company or SHELL company. This technology adopts the direct hydration method of EO (ethy...

Claims

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Application Information

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IPC IPC(8): B01J31/08C07C29/10C07C31/20
CPCY02P20/52
Inventor 周焕文黄彦科徐文清朱凌辉谭振明
Owner PETROCHINA CO LTD