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Method for preparing isophorone from acetone

A technology of isophorone and acetone, which is applied in the field of preparing isophorone from acetone, can solve the problems of complex process and long catalyst preparation cycle, and achieve the effect of simple preparation process and good reaction performance

Active Publication Date: 2017-06-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that there are problems in the prior art that the catalyst preparation period is long and the process is complicated, and a new method for preparing isophorone from acetone is provided

Method used

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  • Method for preparing isophorone from acetone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 200 grams of ZSM-5, 100 grams of magnesium oxide, and 10 grams of safflower powder, add them to the kneader and knead, knead for 10 minutes, slowly add 200 grams of 3% nitric acid solution, continue kneading for 30 minutes, and install the screw extruder after the kneading is completed Extruded, then aged at room temperature for 15 hours, dried at 100°C for 10 hours, and finally calcined at 600°C for 8 hours to obtain catalyst A. The catalyst performance evaluation test was carried out on a fixed-bed tubular reactor (Ф25×500 mm stainless steel), with a catalyst loading of 10 ml. The analysis of the reaction product was carried out by Agilent 6820, HP-1 column. The experimental conditions and reaction results are shown in Table 1.

Embodiment 2

[0028] Weigh 300 grams of ZSM-11, 50 grams of magnesium oxide, and 10 grams of safflower powder, add them to the kneader and knead them. After kneading for 15 minutes, slowly add 250 grams of 3% nitric acid solution, and continue kneading for 40 minutes. After the kneading is completed, install the screw extruder Extruded, then aged at room temperature for 10 hours, dried at 120°C for 6 hours, and finally calcined at 450°C for 16 hours to obtain Catalyst B. The catalyst performance evaluation test was carried out on a fixed-bed tubular reactor (Ф25×500 mm stainless steel), with a catalyst loading of 10 ml. The analysis of the reaction product was carried out by Agilent 6820, HP-1 column. The experimental conditions and reaction results are shown in Table 1.

Embodiment 3

[0030] Weigh 250 grams of ZSM-12, 180 grams of magnesium hydroxide, and 12 grams of asparagus powder into the kneader and knead. After kneading for 5 minutes, slowly add 300 grams of 5% acetic acid solution, and continue kneading for 20 minutes. After the kneading is completed, set the screw to extrude Extruded by machine, then aged at room temperature for 20 hours, dried at 90°C for 8 hours, and finally calcined at 500°C for 4 hours to obtain catalyst C. The catalyst performance evaluation test was carried out on a fixed-bed tubular reactor (Ф25×500 mm stainless steel), with a catalyst loading of 10 ml. The analysis of the reaction product was carried out by Agilent 6820, HP-1 column. The experimental conditions and reaction results are shown in Table 1.

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Abstract

The invention relates to a method for preparing isophorone from acetone, and mainly solves the problem that a catalyst is complicated in preparation process in the prior art. The acetone is used as a raw material, reaction raw materials are in contact with the catalyst, the isophorone is generated through reaction, and the catalyst comprises a molecular sieve and magnesium oxide. Through the technical scheme, the problem is preferably solved, and the method can be used in industrial production of the isophorone prepared from the acetone.

Description

technical field [0001] The invention relates to a method for preparing isophorone from acetone. Background technique [0002] The chemical name of isophorone is 3,5,5-trimethyl-2-cyclohexen-1-one, which is a colorless and low-volatility liquid with a smell similar to camphor. It is an important ketone solvent with excellent performance of low hygroscopicity, small evaporation rate and outstanding solvency, and it is also an important organic chemical raw material. [0003] Acetone condensation method to prepare isophorone includes liquid phase condensation method and heterogeneous condensation method. The liquid-phase condensation method is the pressurized liquid-phase condensation of acetone in an alkaline solution. It is an industrial method mainly used abroad at present. This method has the advantages of simple catalyst and convenient operation. The disadvantage is that the reaction kettle is a high-pressure equipment and its internal structure is relatively complicated....

Claims

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Application Information

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IPC IPC(8): C07C49/603C07C45/74B01J29/40B01J29/18B01J29/65B01J29/08B01J29/70B01J29/06
CPCB01J29/061B01J29/08B01J29/18B01J29/40B01J29/65B01J29/703B01J29/7034B01J29/7046B01J2229/18C07C45/74C07C49/603
Inventor 吕建刚金照生徐菁金萍周海春孙兰萍黄祖娟
Owner CHINA PETROLEUM & CHEM CORP
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