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Technology of poducing acetone oxime or butanone oxime by oxidation of acetone or butanone

A technology of butanone oxime and acetone oxime, which is applied in oxime preparation and organic chemistry, can solve the problems of large toxic pollutants and low value, and achieve the effect of simple reaction process and high reaction efficiency

Inactive Publication Date: 2004-12-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two processes use a large amount of toxic pollutants in the production process and produce a large amount of low-value hydrochloride or sulfate by-products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Example 1: Into a 200ml reactor, add 1.2g TS-1, 11.6g acetone, 35g tert-butanol, and 22g ammonia water with a concentration of 25wt.%. The mixture was fully mixed, the reaction vessel was sealed, and the reaction temperature was controlled at 80°C. Continuously add 26 g of 30 wt % hydrogen peroxide solution with a micro-feed pump. Hydrogen peroxide was added dropwise continuously for 2 hours, and the reaction was continued for 1 hour. After the reaction, the solid catalyst is separated from the solution. The conversion rate of acetone is 99%, and the selectivity of acetone oxime reaches 96%.

Embodiment 2

[0008] Example 2: Into a 200ml reactor, add 1.2g TS-1, 14.2g butanone, 35g tert-butanol, and 25g ammonia water with a concentration of 25wt.%. The mixture was fully mixed, the reaction vessel was sealed, and the reaction temperature was controlled at 90°C. Continuously add 26 g of 30 wt % hydrogen peroxide solution with a micro-feed pump. Hydrogen peroxide was added dropwise continuously for 4 hours, and the reaction was continued for 1 hour. After the reaction, the solid catalyst is separated from the solution. The conversion rate of butanone is 99%, and the selectivity of butanone oxime reaches 95%.

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PUM

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Abstract

A process for preparing acetonyloxime or butanonyloxime by oxidizing acetone or butanone includes dissolving acetone or butanone is isopropanol or tert-butanol, adding catalyst TS-1 and ammonia, and slowly dripping hydrogen peroxide while reaction for 0.25-12 hr. Its advantages are high conversion rate and high selectivity.

Description

technical field [0001] The invention relates to a process for producing acetone oxime or butanone oxime by oxidation of acetone or butanone. It belongs to the production technology of acetone oxime and butanone oxime. Background technique [0002] Acetone oxime and butanone oxime are a class of chemical oxygen scavengers developed in recent years. Because of their low toxicity and good oxygen removal effect, they can be widely used as a class of important additives in the passivation solution and operating water of boilers in thermal power plants after pickling, so that a good passivation film can be formed on the inner wall of the boiler. It can replace hydrazine and highly toxic hydrazine, and is a new type of oxygen scavenger for boiler feed water. [0003] At present, there are two main production processes of acetone oxime and butanone oxime in industry: hydroxylamine hydrochloride method, hydroxylamine sulfate method and sodium nitrit...

Claims

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Application Information

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IPC IPC(8): C07C249/04C07C251/38
Inventor 米镇涛梁新华王亚权王莅
Owner TIANJIN UNIV
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