Catalyst for synthesizing methyl isopropyl ketone and diethylketone, process for preparing the same and application thereof

A methyl isopropyl ketone and catalyst technology, which is applied in the preparation of organic compounds, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of easy coking operation on the surface of the catalyst and inconvenience. , the problem of high reaction temperature, to achieve the effect of low equipment requirements, high production efficiency and low reaction temperature

Inactive Publication Date: 2006-02-15
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

However, there are also disadvantages such as high reaction temperature, easy coking on the surface of the catalyst and inconvenient operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 50 g Zr(NO 3 ) 4 .5H 2 O, 41.6 g containing Mn (NO 3 ) 2 50% aqueous solution, 17.3 grams of Zn(NO 3 ) 2 6H 2 O was prepared into a mixed aqueous solution (Zr / Mn / Zn atomic ratio=2:2:1) with 290 milliliters of deionized water, and co-precipitated with 0.3 molar NaOH solution in parallel flow method to control the final pH value to be equal to 9. Aged for 4 hours under stirring at 75-90° C., filtered the precipitate, and washed repeatedly with deionized water until almost neutral. After drying at 110°C for 16 hours, it was calcined at 450°C for 4 hours to prepare Zr-Mn-Zn mixed oxides. The mixed oxide is impregnated with NaOH solution of suitable concentration, so that the amount of Na added is 0.24 wt% of the weight of the mixed oxide. After drying at 110°C, it was calcined at 400°C for 3 hours to obtain a mixed oxide of Zr-Mn-Zn. With an appropriate concentration of Pd(NO 3 ) 2 The solution impregnated the mixed oxide so that the Pd loading was 0.25 wt% of th...

Embodiment 2

[0032] KOH solution with 0.3 molar concentration was used instead of NaOH solution to co-precipitate in co-current method, and the final pH value was controlled to be equal to 9 and the amount of potassium added was 0.5wt% of the mixed oxide. All the other are described with embodiment 1.

Embodiment 3

[0034] With an appropriate concentration of Pd(NO 3 ) 2 The mixed oxide of Zr-Mn-Zn-Na was impregnated with the solution so that the loading amount of Pd was 0.5wt% of the mixed oxide. All the other are described with embodiment 1.

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Abstract

This invention provides new catalyst with high activity to synthesize methyl isopropenyl ketone and ethanone from MEK and carbinol, its preparation method and application in ketone preparation reaction. The catalyst comprises Zr, Mn, Zn and mixed oxide of alkali metal carried a little Pd. By this product, the reaction can run at very low temperature, does not coke easily, needs less raw material and the cost is lower.

Description

technical field [0001] The invention relates to a catalyst for synthesizing methyl isopropyl ketone and diethyl ketone. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The present invention also relates to the process of synthesizing ketones, especially methyl isopropyl ketone and diethyl ketone, using the above-mentioned catalyst. technical background [0004] Methyl isopropyl ketone (MIPK) and diethyl ketone (DEK) are advanced solvents and important organic synthesis intermediates, which are widely used in fields such as agriculture, medicine, spices, dyes, metal processing and food. Methyl isopropyl ketone is the raw material for the production of important cationic reactive dyes Pink FG, Brilliant Red 5GN and photosensitive color-changing substances. Diethyl ketone is a key intermediate in the production of dimethylamino. Methyl isopropyl ketone and diethyl ketone are important intermediates and solvents for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34C07C45/71
Inventor 罗洪原丁云杰田丽何代平
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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