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Catalyst for preparing glyphosate from diethanolamine and preparation method thereof

A diethanolamine and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, cyanide reaction preparation, etc., can solve the problem of high price of Cu/Zr supported catalysts, reduce dosage, increase dispersibility, and achieve large ratios. The effect of surface area

Inactive Publication Date: 2011-12-28
戴李平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing process for producing glyphosate from diethanolamine, a Cu / Zr carrier catalyst is used, and diethanolamine reacts with sodium hydroxide to dehydrogenate (oxidize) to generate iminodiacetic acid. The yield of iminodiacetic acid is as high as 95%, and there is basically no " "Three wastes" are generated, and Cu can be recycled and used by a relatively simple method, but the price of Cu / Zr carrier catalyst is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: Catalyst for preparing glyphosate from diethanolamine, used for the dehydrogenation reaction of diethanolamine and sodium hydroxide to generate iminodiacetic acid, the parts by weight of the raw materials are: Cu / Zr carrier catalyst 1.5g, attapulgite Powder 1g, activated carbon 1g, calcium oxide 0.2g.

[0011] The preparation method of the catalyst for preparing glyphosate from diethanolamine comprises weighing each raw material according to the weight portion of the raw materials, adding the raw materials continuously to a turntable with adjustable speed and inclination, controlling the speed to 600r / min, and simultaneously Spray water, the powder rolls and mixes and sticks to form a sphere with a uniform diameter, and the sphere is dried to obtain the finished product.

Embodiment 2

[0012] Embodiment 2: the use effect contrast of catalyst of the present invention and original catalyst

[0013] In the reactor of two groups of diethanolamine and sodium hydroxide dehydrogenation reaction, add respectively: Cu / Zr carrier catalyst 1.5g and catalyst 1.5g of the present invention, obtain the iminodiacetic acid of equal quality in the same time, and use In the experimental group of catalysts of the present invention, the last catalyst was intact and could be used continuously.

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PUM

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Abstract

The invention discloses a catalyst for preparing glyphosate from diethanolamine and a preparation method thereof. It is mainly formed by mixing and granulating the catalyst, attapulgite powder, activated carbon, and binder according to a certain weight ratio. The invention adopts The cheaper activated carbon and attapulgite powder are mixed with a small amount of Cu / Zr carrier catalyst to replace the original catalyst, which saves the cost; activated carbon and attapulgite powder have a larger specific surface area, which can increase the dispersion of Cu / Zr carrier catalyst, and The deactivation of active copper is greatly delayed, and the service life of the catalyst is increased.

Description

technical field [0001] The invention relates to a catalyst for preparing glyphosate from diethanolamine and a preparation method thereof, belonging to the field of catalysts. Background technique [0002] In the existing process for producing glyphosate from diethanolamine, a Cu / Zr carrier catalyst is used, and diethanolamine reacts with sodium hydroxide to dehydrogenate (oxidize) to generate iminodiacetic acid. The yield of iminodiacetic acid is as high as 95%, and there is basically no " "Three wastes" are generated, and Cu can be recycled and used by a relatively simple method, but the price of Cu / Zr carrier catalyst is relatively high. Production cost is the first point in the actual production process, so it is necessary to provide a new catalyst. Contents of the invention [0003] The object of the present invention is to provide a catalyst for preparing glyphosate from diethanolamine and a preparation method thereof. [0004] In order to achieve the above object, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J35/10C07C229/16C07C227/02
Inventor 戴李平
Owner 戴李平